diff --git a/implementation-contributed/curation_logs/v8.json b/implementation-contributed/curation_logs/v8.json
index b7e11fb57a..6aac27be26 100644
--- a/implementation-contributed/curation_logs/v8.json
+++ b/implementation-contributed/curation_logs/v8.json
@@ -1,5 +1,5 @@
 {
-  "sourceRevisionAtLastExport": "f85a3554",
-  "targetRevisionAtLastExport": "6bb8f41e0a",
+  "sourceRevisionAtLastExport": "ddf72e4b",
+  "targetRevisionAtLastExport": "8d9f7690f8",
   "curatedFiles": {}
 }
\ No newline at end of file
diff --git a/implementation-contributed/v8/intl/bigint/tolocalestring.js b/implementation-contributed/v8/intl/bigint/tolocalestring.js
new file mode 100644
index 0000000000..d0b6792ea8
--- /dev/null
+++ b/implementation-contributed/v8/intl/bigint/tolocalestring.js
@@ -0,0 +1,61 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-bigint
+
+var locales = [
+    "en",  // "1,234,567,890,123,456"
+    "de",  // "1.234.567.890.123.456"
+    "fr",  // "1 234 567 890 123 456"
+    "hi",  // "1,23,45,67,89,01,23,456"
+    "fa",  // "۱٬۲۳۴٬۵۶۷٬۸۹۰٬۱۲۳٬۴۵۶"
+    "th-u-nu-thai",  // "๑,๒๓๔,๕๖๗,๘๙๐,๑๒๓,๔๕๖"
+];
+
+var data = [
+    Number.MAX_SAFE_INTEGER,
+    -Number.MAX_SAFE_INTEGER,
+    Math.floor(Number.MAX_SAFE_INTEGER / 2),
+    0,
+    /// -0, // this case is broken now.
+];
+
+for (var locale of locales) {
+  let nf = new Intl.NumberFormat(locale);
+
+  let percentOption = {style: "percent"};
+  let nfPercent = new Intl.NumberFormat(locale, percentOption);
+  for (var n of data) {
+    let bigint = BigInt(n);
+    // Test NumberFormat w/ number output the same as
+    // BigInt.prototype.toLocaleString()
+    assertEquals(nf.format(n), bigint.toLocaleString(locale));
+
+    // Test NumberFormat output the same regardless pass in as number or BigInt
+    assertEquals(nf.format(n), nf.format(bigint));
+
+    // Test formatToParts
+    assertEquals(nf.formatToParts(n), nf.formatToParts(bigint));
+
+    // Test output with option
+    // Test NumberFormat w/ number output the same as
+    // BigInt.prototype.toLocaleString()
+    assertEquals(nfPercent.format(n),
+        bigint.toLocaleString(locale, percentOption));
+
+    // Test NumberFormat output the same regardless pass in as number or BigInt
+    assertEquals(nfPercent.format(n), nfPercent.format(bigint));
+    assertEquals(nfPercent.formatToParts(n), nfPercent.formatToParts(bigint));
+  }
+
+  // Test very big BigInt
+  let veryBigInt = BigInt(Number.MAX_SAFE_INTEGER) *
+      BigInt(Number.MAX_SAFE_INTEGER) *
+      BigInt(Number.MAX_SAFE_INTEGER);
+  assertEquals(nf.format(veryBigInt), veryBigInt.toLocaleString(locale));
+  // It should output different than toString
+  assertFalse(veryBigInt.toLocaleString(locale) == veryBigInt.toString());
+  assertTrue(veryBigInt.toLocaleString(locale).length >
+      veryBigInt.toString().length);
+}
diff --git a/implementation-contributed/v8/intl/date-format/check-hc-option.js b/implementation-contributed/v8/intl/date-format/check-hc-option.js
index 276bfe6a23..7a1e917816 100644
--- a/implementation-contributed/v8/intl/date-format/check-hc-option.js
+++ b/implementation-contributed/v8/intl/date-format/check-hc-option.js
@@ -26,7 +26,8 @@ let locales = [
 ];
 
 invalid_hc.forEach(function(hc) {
-  let df = new Intl.DateTimeFormat(["en-u-hc-" + hc + "-fo-obar"]);
+  let df = new Intl.DateTimeFormat(
+      ["en-u-hc-" + hc + "-fo-obar"], {hour: "2-digit"});
   assertEquals("en", df.resolvedOptions().locale);
 }
 );
@@ -34,7 +35,8 @@ invalid_hc.forEach(function(hc) {
 valid_hc.forEach(function(hc) {
   locales.forEach(function(base) {
     let l = base + "-u-hc-" + hc;
-    let df = new Intl.DateTimeFormat([l + "-fo-obar"]);
+    let df = new Intl.DateTimeFormat(
+        [l + "-fo-obar"], {hour: "2-digit"});
     assertEquals(l, df.resolvedOptions().locale);
   });
 }
diff --git a/implementation-contributed/v8/intl/date-format/constructor-date-style-order.js b/implementation-contributed/v8/intl/date-format/constructor-date-style-order.js
new file mode 100644
index 0000000000..8e601b48d3
--- /dev/null
+++ b/implementation-contributed/v8/intl/date-format/constructor-date-style-order.js
@@ -0,0 +1,108 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-datetime-style
+
+// Throws only once during construction.
+// Check for all getters to prevent regression.
+// Preserve the order of getter initialization.
+let getCount = 0;
+let weekday = new Array();
+let year = new Array();
+let month = new Array();
+let day = new Array();
+let hour = new Array();
+let minute = new Array();
+let second = new Array();
+let localeMatcher = new Array();
+let hour12 = new Array();
+let hourCycle = new Array();
+let dateStyle = new Array();
+let timeStyle = new Array();
+let timeZone = new Array();
+let era = new Array();
+let timeZoneName = new Array();
+let formatMatcher = new Array();
+
+new Intl.DateTimeFormat(['en-US'], {
+  get weekday() {
+    weekday.push(++getCount);
+  },
+  get year() {
+    year.push(++getCount);
+  },
+  get month() {
+    month.push(++getCount);
+  },
+  get day() {
+    day.push(++getCount);
+  },
+  get hour() {
+    hour.push(++getCount);
+  },
+  get minute() {
+    minute.push(++getCount);
+  },
+  get second() {
+    second.push(++getCount);
+  },
+  get localeMatcher() {
+    localeMatcher.push(++getCount);
+  },
+  get hour12() {
+    hour12.push(++getCount);
+  },
+  get hourCycle() {
+    hourCycle.push(++getCount);
+  },
+  get timeZone() {
+    timeZone.push(++getCount);
+  },
+  get dateStyle() {
+    dateStyle.push(++getCount);
+    return "full";
+  },
+  get timeStyle() {
+    timeStyle.push(++getCount);
+  },
+  get era() {
+    era.push(++getCount);
+  },
+  get timeZoneName() {
+    timeZoneName.push(++getCount);
+  },
+  get formatMatcher() {
+    formatMatcher.push(++getCount);
+  }
+});
+
+assertEquals(1, weekday.length);
+assertEquals(1, weekday[0]);
+assertEquals(1, year.length);
+assertEquals(2, year[0]);
+assertEquals(1, month.length);
+assertEquals(3, month[0]);
+assertEquals(1, day.length);
+assertEquals(4, day[0]);
+assertEquals(1, hour.length);
+assertEquals(5, hour[0]);
+assertEquals(1, minute.length);
+assertEquals(6, minute[0]);
+assertEquals(1, second.length);
+assertEquals(7, second[0]);
+assertEquals(1, localeMatcher.length);
+assertEquals(8, localeMatcher[0]);
+assertEquals(1, hour12.length);
+assertEquals(9, hour12[0]);
+assertEquals(1, hourCycle.length);
+assertEquals(10, hourCycle[0]);
+assertEquals(1, timeZone.length);
+assertEquals(11, timeZone[0]);
+assertEquals(1, dateStyle.length);
+assertEquals(12, dateStyle[0]);
+assertEquals(1, timeStyle.length);
+assertEquals(13, timeStyle[0]);
+assertEquals(0, era.length);
+assertEquals(0, timeZoneName.length);
+assertEquals(0, formatMatcher.length);
diff --git a/implementation-contributed/v8/intl/date-format/constructor-date-time-style-order.js b/implementation-contributed/v8/intl/date-format/constructor-date-time-style-order.js
new file mode 100644
index 0000000000..d4d114662f
--- /dev/null
+++ b/implementation-contributed/v8/intl/date-format/constructor-date-time-style-order.js
@@ -0,0 +1,109 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-datetime-style
+
+// Throws only once during construction.
+// Check for all getters to prevent regression.
+// Preserve the order of getter initialization.
+let getCount = 0;
+let weekday = new Array();
+let year = new Array();
+let month = new Array();
+let day = new Array();
+let hour = new Array();
+let minute = new Array();
+let second = new Array();
+let localeMatcher = new Array();
+let hour12 = new Array();
+let hourCycle = new Array();
+let dateStyle = new Array();
+let timeStyle = new Array();
+let timeZone = new Array();
+let era = new Array();
+let timeZoneName = new Array();
+let formatMatcher = new Array();
+
+new Intl.DateTimeFormat(['en-US'], {
+  get weekday() {
+    weekday.push(++getCount);
+  },
+  get year() {
+    year.push(++getCount);
+  },
+  get month() {
+    month.push(++getCount);
+  },
+  get day() {
+    day.push(++getCount);
+  },
+  get hour() {
+    hour.push(++getCount);
+  },
+  get minute() {
+    minute.push(++getCount);
+  },
+  get second() {
+    second.push(++getCount);
+  },
+  get localeMatcher() {
+    localeMatcher.push(++getCount);
+  },
+  get hour12() {
+    hour12.push(++getCount);
+  },
+  get hourCycle() {
+    hourCycle.push(++getCount);
+  },
+  get timeZone() {
+    timeZone.push(++getCount);
+  },
+  get dateStyle() {
+    dateStyle.push(++getCount);
+    return "full";
+  },
+  get timeStyle() {
+    timeStyle.push(++getCount);
+    return "full";
+  },
+  get era() {
+    era.push(++getCount);
+  },
+  get timeZoneName() {
+    timeZoneName.push(++getCount);
+  },
+  get formatMatcher() {
+    formatMatcher.push(++getCount);
+  }
+});
+
+assertEquals(1, weekday.length);
+assertEquals(1, weekday[0]);
+assertEquals(1, year.length);
+assertEquals(2, year[0]);
+assertEquals(1, month.length);
+assertEquals(3, month[0]);
+assertEquals(1, day.length);
+assertEquals(4, day[0]);
+assertEquals(1, hour.length);
+assertEquals(5, hour[0]);
+assertEquals(1, minute.length);
+assertEquals(6, minute[0]);
+assertEquals(1, second.length);
+assertEquals(7, second[0]);
+assertEquals(1, localeMatcher.length);
+assertEquals(8, localeMatcher[0]);
+assertEquals(1, hour12.length);
+assertEquals(9, hour12[0]);
+assertEquals(1, hourCycle.length);
+assertEquals(10, hourCycle[0]);
+assertEquals(1, timeZone.length);
+assertEquals(11, timeZone[0]);
+assertEquals(1, dateStyle.length);
+assertEquals(12, dateStyle[0]);
+assertEquals(1, timeStyle.length);
+assertEquals(13, timeStyle[0]);
+assertEquals(0, era.length);
+assertEquals(0, timeZoneName.length);
+assertEquals(0, formatMatcher.length);
diff --git a/implementation-contributed/v8/intl/date-format/constructor-date-time-style.js b/implementation-contributed/v8/intl/date-format/constructor-date-time-style.js
new file mode 100644
index 0000000000..f4bc40b396
--- /dev/null
+++ b/implementation-contributed/v8/intl/date-format/constructor-date-time-style.js
@@ -0,0 +1,33 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-datetime-style
+
+var validStyle = ["full", "long", "medium", "short", undefined];
+var invalidStyle = ["narrow", "numeric"];
+
+validStyle.forEach(function(dateStyle) {
+  validStyle.forEach(function(timeStyle) {
+    assertDoesNotThrow(() =>
+        new Intl.DateTimeFormat("en", {dateStyle, timeStyle}));
+  });
+
+  invalidStyle.forEach(function(timeStyle) {
+    assertThrows(() =>
+        new Intl.DateTimeFormat("en", {dateStyle, timeStyle}), RangeError);
+  });
+}
+);
+
+invalidStyle.forEach(function(dateStyle) {
+  validStyle.forEach(function(timeStyle) {
+    assertThrows(() =>
+        new Intl.DateTimeFormat("en", {dateStyle, timeStyle}), RangeError);
+  });
+  invalidStyle.forEach(function(timeStyle) {
+    assertThrows(() =>
+        new Intl.DateTimeFormat("en", {dateStyle, timeStyle}), RangeError);
+  });
+}
+);
diff --git a/implementation-contributed/v8/intl/date-format/constructor-no-style-order.js b/implementation-contributed/v8/intl/date-format/constructor-no-style-order.js
new file mode 100644
index 0000000000..bd4bc4cc37
--- /dev/null
+++ b/implementation-contributed/v8/intl/date-format/constructor-no-style-order.js
@@ -0,0 +1,114 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-datetime-style
+
+// Throws only once during construction.
+// Check for all getters to prevent regression.
+// Preserve the order of getter initialization.
+let getCount = 0;
+let weekday = new Array();
+let year = new Array();
+let month = new Array();
+let day = new Array();
+let hour = new Array();
+let minute = new Array();
+let second = new Array();
+let localeMatcher = new Array();
+let hour12 = new Array();
+let hourCycle = new Array();
+let dateStyle = new Array();
+let timeStyle = new Array();
+let timeZone = new Array();
+let era = new Array();
+let timeZoneName = new Array();
+let formatMatcher = new Array();
+
+new Intl.DateTimeFormat(['en-US'], {
+  get weekday() {
+    weekday.push(++getCount);
+  },
+  get year() {
+    year.push(++getCount);
+  },
+  get month() {
+    month.push(++getCount);
+  },
+  get day() {
+    day.push(++getCount);
+  },
+  get hour() {
+    hour.push(++getCount);
+  },
+  get minute() {
+    minute.push(++getCount);
+  },
+  get second() {
+    second.push(++getCount);
+  },
+  get localeMatcher() {
+    localeMatcher.push(++getCount);
+  },
+  get hour12() {
+    hour12.push(++getCount);
+  },
+  get hourCycle() {
+    hourCycle.push(++getCount);
+  },
+  get timeZone() {
+    timeZone.push(++getCount);
+  },
+  get dateStyle() {
+    dateStyle.push(++getCount);
+  },
+  get timeStyle() {
+    timeStyle.push(++getCount);
+  },
+  get era() {
+    era.push(++getCount);
+  },
+  get timeZoneName() {
+    timeZoneName.push(++getCount);
+  },
+  get formatMatcher() {
+    formatMatcher.push(++getCount);
+  }
+});
+
+assertEquals(2, weekday.length);
+assertEquals(1, weekday[0]);
+assertEquals(1, year.length);
+assertEquals(2, year[0]);
+assertEquals(1, month.length);
+assertEquals(3, month[0]);
+assertEquals(1, day.length);
+assertEquals(4, day[0]);
+assertEquals(2, hour.length);
+assertEquals(5, hour[0]);
+assertEquals(2, minute.length);
+assertEquals(6, minute[0]);
+assertEquals(2, second.length);
+assertEquals(7, second[0]);
+assertEquals(1, localeMatcher.length);
+assertEquals(8, localeMatcher[0]);
+assertEquals(1, hour12.length);
+assertEquals(9, hour12[0]);
+assertEquals(1, hourCycle.length);
+assertEquals(10, hourCycle[0]);
+assertEquals(1, timeZone.length);
+assertEquals(11, timeZone[0]);
+assertEquals(1, dateStyle.length);
+assertEquals(12, dateStyle[0]);
+assertEquals(1, timeStyle.length);
+assertEquals(13, timeStyle[0]);
+assertEquals(14, weekday[1]);
+assertEquals(1, era.length);
+assertEquals(15, era[0]);
+assertEquals(16, hour[1]);
+assertEquals(17, minute[1]);
+assertEquals(18, second[1]);
+assertEquals(1, timeZoneName.length);
+assertEquals(19, timeZoneName[0]);
+assertEquals(1, formatMatcher.length);
+assertEquals(20, formatMatcher[0]);
diff --git a/implementation-contributed/v8/intl/date-format/constructor-time-style-order.js b/implementation-contributed/v8/intl/date-format/constructor-time-style-order.js
new file mode 100644
index 0000000000..d35f21a196
--- /dev/null
+++ b/implementation-contributed/v8/intl/date-format/constructor-time-style-order.js
@@ -0,0 +1,108 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-datetime-style
+
+// Throws only once during construction.
+// Check for all getters to prevent regression.
+// Preserve the order of getter initialization.
+let getCount = 0;
+let weekday = new Array();
+let year = new Array();
+let month = new Array();
+let day = new Array();
+let hour = new Array();
+let minute = new Array();
+let second = new Array();
+let localeMatcher = new Array();
+let hour12 = new Array();
+let hourCycle = new Array();
+let dateStyle = new Array();
+let timeStyle = new Array();
+let timeZone = new Array();
+let era = new Array();
+let timeZoneName = new Array();
+let formatMatcher = new Array();
+
+new Intl.DateTimeFormat(['en-US'], {
+  get weekday() {
+    weekday.push(++getCount);
+  },
+  get year() {
+    year.push(++getCount);
+  },
+  get month() {
+    month.push(++getCount);
+  },
+  get day() {
+    day.push(++getCount);
+  },
+  get hour() {
+    hour.push(++getCount);
+  },
+  get minute() {
+    minute.push(++getCount);
+  },
+  get second() {
+    second.push(++getCount);
+  },
+  get localeMatcher() {
+    localeMatcher.push(++getCount);
+  },
+  get hour12() {
+    hour12.push(++getCount);
+  },
+  get hourCycle() {
+    hourCycle.push(++getCount);
+  },
+  get timeZone() {
+    timeZone.push(++getCount);
+  },
+  get dateStyle() {
+    dateStyle.push(++getCount);
+  },
+  get timeStyle() {
+    timeStyle.push(++getCount);
+    return "full";
+  },
+  get era() {
+    era.push(++getCount);
+  },
+  get timeZoneName() {
+    timeZoneName.push(++getCount);
+  },
+  get formatMatcher() {
+    formatMatcher.push(++getCount);
+  }
+});
+
+assertEquals(1, weekday.length);
+assertEquals(1, weekday[0]);
+assertEquals(1, year.length);
+assertEquals(2, year[0]);
+assertEquals(1, month.length);
+assertEquals(3, month[0]);
+assertEquals(1, day.length);
+assertEquals(4, day[0]);
+assertEquals(1, hour.length);
+assertEquals(5, hour[0]);
+assertEquals(1, minute.length);
+assertEquals(6, minute[0]);
+assertEquals(1, second.length);
+assertEquals(7, second[0]);
+assertEquals(1, localeMatcher.length);
+assertEquals(8, localeMatcher[0]);
+assertEquals(1, hour12.length);
+assertEquals(9, hour12[0]);
+assertEquals(1, hourCycle.length);
+assertEquals(10, hourCycle[0]);
+assertEquals(1, timeZone.length);
+assertEquals(11, timeZone[0]);
+assertEquals(1, dateStyle.length);
+assertEquals(12, dateStyle[0]);
+assertEquals(1, timeStyle.length);
+assertEquals(13, timeStyle[0]);
+assertEquals(0, era.length);
+assertEquals(0, timeZoneName.length);
+assertEquals(0, formatMatcher.length);
diff --git a/implementation-contributed/v8/intl/date-format/property-override-date-style.js b/implementation-contributed/v8/intl/date-format/property-override-date-style.js
new file mode 100644
index 0000000000..67d9bc5361
--- /dev/null
+++ b/implementation-contributed/v8/intl/date-format/property-override-date-style.js
@@ -0,0 +1,54 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-datetime-style
+
+// Checks for security holes introduced by Object.property overrides.
+// For example:
+// Object.defineProperty(Array.prototype, 'locale', {
+//   set: function(value) {
+//     throw new Error('blah');
+//   },
+//   configurable: true,
+//   enumerable: false
+// });
+//
+// would throw in case of (JS) x.locale = 'us' or (C++) x->Set('locale', 'us').
+//
+// First get supported properties.
+// Some of the properties are optional, so we request them.
+var properties = [];
+var options = Intl.DateTimeFormat(
+  'en-US', {dateStyle: 'full'}).resolvedOptions();
+for (var prop in options) {
+  if (options.hasOwnProperty(prop)) {
+    properties.push(prop);
+  }
+}
+
+// In the order of Table 6 of
+// ecma402 #sec-intl.datetimeformat.prototype.resolvedoptions
+var expectedProperties = [
+  'locale',
+  'calendar',
+  'numberingSystem',
+  'timeZone',
+  'hourCycle',
+  'hour12',
+  'weekday',
+  'year',
+  'month',
+  'day',
+  'dateStyle',
+];
+
+assertEquals(expectedProperties.length, properties.length);
+
+properties.forEach(function(prop) {
+  assertFalse(expectedProperties.indexOf(prop) === -1);
+});
+
+taintProperties(properties);
+
+var locale = Intl.DateTimeFormat().resolvedOptions().locale;
diff --git a/implementation-contributed/v8/intl/date-format/property-override-date-time-style.js b/implementation-contributed/v8/intl/date-format/property-override-date-time-style.js
new file mode 100644
index 0000000000..f51d6f31a6
--- /dev/null
+++ b/implementation-contributed/v8/intl/date-format/property-override-date-time-style.js
@@ -0,0 +1,59 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-datetime-style
+
+// Checks for security holes introduced by Object.property overrides.
+// For example:
+// Object.defineProperty(Array.prototype, 'locale', {
+//   set: function(value) {
+//     throw new Error('blah');
+//   },
+//   configurable: true,
+//   enumerable: false
+// });
+//
+// would throw in case of (JS) x.locale = 'us' or (C++) x->Set('locale', 'us').
+
+// First get supported properties.
+// Some of the properties are optional, so we request them.
+var properties = [];
+var options = Intl.DateTimeFormat(
+  'en-US', {dateStyle: 'full', timeStyle: 'full'}).resolvedOptions();
+for (var prop in options) {
+  if (options.hasOwnProperty(prop)) {
+    properties.push(prop);
+  }
+}
+
+// In the order of Table 6 of
+// ecma402 #sec-intl.datetimeformat.prototype.resolvedoptions
+var expectedProperties = [
+  'locale',
+  'calendar',
+  'numberingSystem',
+  'timeZone',
+  'hourCycle',
+  'hour12',
+  'weekday',
+  'year',
+  'month',
+  'day',
+  'hour',
+  'minute',
+  'second',
+  'timeZoneName',
+  'dateStyle',
+  'timeStyle',
+];
+
+assertEquals(expectedProperties.length, properties.length);
+
+properties.forEach(function(prop) {
+  assertFalse(expectedProperties.indexOf(prop) === -1);
+});
+
+taintProperties(properties);
+
+var locale = Intl.DateTimeFormat().resolvedOptions().locale;
diff --git a/implementation-contributed/v8/intl/date-format/property-override-time-style.js b/implementation-contributed/v8/intl/date-format/property-override-time-style.js
new file mode 100644
index 0000000000..1b93ac633f
--- /dev/null
+++ b/implementation-contributed/v8/intl/date-format/property-override-time-style.js
@@ -0,0 +1,54 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-datetime-style
+
+// Checks for security holes introduced by Object.property overrides.
+// For example:
+// Object.defineProperty(Array.prototype, 'locale', {
+//   set: function(value) {
+//     throw new Error('blah');
+//   },
+//   configurable: true,
+//   enumerable: false
+// });
+//
+// would throw in case of (JS) x.locale = 'us' or (C++) x->Set('locale', 'us').
+
+// First get supported properties.
+// Some of the properties are optional, so we request them.
+var properties = [];
+var options = Intl.DateTimeFormat(
+  'en-US', {timeStyle: 'full'}).resolvedOptions();
+for (var prop in options) {
+  if (options.hasOwnProperty(prop)) {
+    properties.push(prop);
+  }
+}
+
+// In the order of Table 6 of
+// ecma402 #sec-intl.datetimeformat.prototype.resolvedoptions
+var expectedProperties = [
+  'locale',
+  'calendar',
+  'numberingSystem',
+  'timeZone',
+  'hourCycle',
+  'hour12',
+  'hour',
+  'minute',
+  'second',
+  'timeZoneName',
+  'timeStyle',
+];
+
+assertEquals(expectedProperties.length, properties.length);
+
+properties.forEach(function(prop) {
+  assertFalse(expectedProperties.indexOf(prop) === -1);
+});
+
+taintProperties(properties);
+
+var locale = Intl.DateTimeFormat().resolvedOptions().locale;
diff --git a/implementation-contributed/v8/intl/intl.status b/implementation-contributed/v8/intl/intl.status
index 83e546db76..4f3387ab22 100644
--- a/implementation-contributed/v8/intl/intl.status
+++ b/implementation-contributed/v8/intl/intl.status
@@ -46,6 +46,9 @@
 
   # Unable to change locale on Windows:
   'default_locale': [SKIP],
+
+  # Unable to change locale and TZ on Windows:
+  'regress-7770': [SKIP],
 }],  # system == windows'
 
 ['system == android', {
@@ -56,5 +59,7 @@
   'relative-time-format/default-locale-fr-CA': [SKIP],
   'relative-time-format/default-locale-pt-BR': [SKIP],
   'default_locale': [SKIP],
+  # Unable to change locale and TZ on Android:
+  'regress-7770': [SKIP],
 }],  # 'system == android'
 ]
diff --git a/implementation-contributed/v8/intl/list-format/constructor-order.js b/implementation-contributed/v8/intl/list-format/constructor-order.js
index 1fc7d99429..97f58436b2 100644
--- a/implementation-contributed/v8/intl/list-format/constructor-order.js
+++ b/implementation-contributed/v8/intl/list-format/constructor-order.js
@@ -8,13 +8,13 @@
 let getCount = 0;
 
 new Intl.ListFormat(['en-US'], {
-  get type() {
+  get localeMatcher() {
     assertEquals(0, getCount++);
   },
-  get style() {
+  get type() {
     assertEquals(1, getCount++);
   },
-  get localeMatcher() {
+  get style() {
     assertEquals(2, getCount++);
   },
 });
diff --git a/implementation-contributed/v8/intl/regress-7770.js b/implementation-contributed/v8/intl/regress-7770.js
new file mode 100644
index 0000000000..2e7c2ce22d
--- /dev/null
+++ b/implementation-contributed/v8/intl/regress-7770.js
@@ -0,0 +1,8 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Environment Variables: TZ=Indian/Kerguelen LANG=uk
+assertEquals(
+  "Fri Feb 01 2019 00:00:00 GMT+0500 (за часом на Французьких Південних і Антарктичних територіях)",
+  new Date(2019, 1,1).toString());
diff --git a/implementation-contributed/v8/intl/regress-8030.js b/implementation-contributed/v8/intl/regress-8030.js
index eac6b84f81..cf0e1aa2a9 100644
--- a/implementation-contributed/v8/intl/regress-8030.js
+++ b/implementation-contributed/v8/intl/regress-8030.js
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 var locales = ["tlh", "id", "en"];
 var referenceRelativeTimeFormat = new Intl.RelativeTimeFormat(locales);
 var referenceFormatted = referenceRelativeTimeFormat.format(3, "day");
diff --git a/implementation-contributed/v8/intl/regress-925216.js b/implementation-contributed/v8/intl/regress-925216.js
new file mode 100644
index 0000000000..f9683dfc77
--- /dev/null
+++ b/implementation-contributed/v8/intl/regress-925216.js
@@ -0,0 +1,10 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+assertTrue(new Intl.DateTimeFormat(
+    "en", { timeZone: 'UTC', hour: 'numeric'}).resolvedOptions().hour12);
+assertFalse(new Intl.DateTimeFormat(
+    "fr", { timeZone: 'UTC', hour: 'numeric'}).resolvedOptions().hour12);
+assertFalse(new Intl.DateTimeFormat(
+    "de", { timeZone: 'UTC', hour: 'numeric'}).resolvedOptions().hour12);
diff --git a/implementation-contributed/v8/intl/relative-time-format/constructor.js b/implementation-contributed/v8/intl/relative-time-format/constructor.js
index ba03e1dd70..f1a4057426 100644
--- a/implementation-contributed/v8/intl/relative-time-format/constructor.js
+++ b/implementation-contributed/v8/intl/relative-time-format/constructor.js
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 // RelativeTimeFormat constructor can't be called as function.
 assertThrows(() => Intl.RelativeTimeFormat('sr'), TypeError);
 
diff --git a/implementation-contributed/v8/intl/relative-time-format/default-locale-fr-CA.js b/implementation-contributed/v8/intl/relative-time-format/default-locale-fr-CA.js
index 32f64ee02d..9f24329b50 100644
--- a/implementation-contributed/v8/intl/relative-time-format/default-locale-fr-CA.js
+++ b/implementation-contributed/v8/intl/relative-time-format/default-locale-fr-CA.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format --harmony-locale
 // Environment Variables: LC_ALL=fr_CA
 assertEquals(
     'fr-CA',
diff --git a/implementation-contributed/v8/intl/relative-time-format/default-locale-pt-BR.js b/implementation-contributed/v8/intl/relative-time-format/default-locale-pt-BR.js
index 89f7aa14f0..ea66b6a0e5 100644
--- a/implementation-contributed/v8/intl/relative-time-format/default-locale-pt-BR.js
+++ b/implementation-contributed/v8/intl/relative-time-format/default-locale-pt-BR.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format --harmony-locale
 // Environment Variables: LC_ALL=pt_BR
 assertEquals(
     'pt-BR',
diff --git a/implementation-contributed/v8/intl/relative-time-format/format-en.js b/implementation-contributed/v8/intl/relative-time-format/format-en.js
index 2af755dcbf..a365749f0a 100644
--- a/implementation-contributed/v8/intl/relative-time-format/format-en.js
+++ b/implementation-contributed/v8/intl/relative-time-format/format-en.js
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 // The following test are not part of the comformance. Just some output in
 // English to verify the format does return something reasonable for English.
 // It may be changed when we update the CLDR data.
diff --git a/implementation-contributed/v8/intl/relative-time-format/format-to-parts-en.js b/implementation-contributed/v8/intl/relative-time-format/format-to-parts-en.js
index 689059f4cd..7c2076b312 100644
--- a/implementation-contributed/v8/intl/relative-time-format/format-to-parts-en.js
+++ b/implementation-contributed/v8/intl/relative-time-format/format-to-parts-en.js
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 // The following test are not part of the comformance. Just some output in
 // English to verify the format does return something reasonable for English.
 // It may be changed when we update the CLDR data.
diff --git a/implementation-contributed/v8/intl/relative-time-format/format-to-parts-plural.js b/implementation-contributed/v8/intl/relative-time-format/format-to-parts-plural.js
index 7e5e1b79a6..bd70f75421 100644
--- a/implementation-contributed/v8/intl/relative-time-format/format-to-parts-plural.js
+++ b/implementation-contributed/v8/intl/relative-time-format/format-to-parts-plural.js
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 // Check plural w/ formatToParts
 // http://tc39.github.io/proposal-intl-relative-time/
 
diff --git a/implementation-contributed/v8/intl/relative-time-format/format-to-parts.js b/implementation-contributed/v8/intl/relative-time-format/format-to-parts.js
index 071c4468c0..ccc9170225 100644
--- a/implementation-contributed/v8/intl/relative-time-format/format-to-parts.js
+++ b/implementation-contributed/v8/intl/relative-time-format/format-to-parts.js
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 // Make sure that RelativeTimeFormat exposes all required properties. Those not specified
 // should have undefined value.
 // http://tc39.github.io/proposal-intl-relative-time/
diff --git a/implementation-contributed/v8/intl/relative-time-format/format.js b/implementation-contributed/v8/intl/relative-time-format/format.js
index 769358423d..e458ad728d 100644
--- a/implementation-contributed/v8/intl/relative-time-format/format.js
+++ b/implementation-contributed/v8/intl/relative-time-format/format.js
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 // Make sure that RelativeTimeFormat exposes all required properties. Those not specified
 // should have undefined value.
 // http://tc39.github.io/proposal-intl-relative-time/
diff --git a/implementation-contributed/v8/intl/relative-time-format/resolved-options.js b/implementation-contributed/v8/intl/relative-time-format/resolved-options.js
index 391b83ae0a..1caa4f86c9 100644
--- a/implementation-contributed/v8/intl/relative-time-format/resolved-options.js
+++ b/implementation-contributed/v8/intl/relative-time-format/resolved-options.js
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 let rtf = new Intl.RelativeTimeFormat();
 // Test 1.4.5 Intl.RelativeTimeFormat.prototype.resolvedOptions ()
 // The default style is 'long'
diff --git a/implementation-contributed/v8/intl/relative-time-format/supported-locale.js b/implementation-contributed/v8/intl/relative-time-format/supported-locale.js
index b24cfb27af..5c177b4777 100644
--- a/implementation-contributed/v8/intl/relative-time-format/supported-locale.js
+++ b/implementation-contributed/v8/intl/relative-time-format/supported-locale.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
 assertEquals(typeof Intl.RelativeTimeFormat.supportedLocalesOf, "function",
              "Intl.RelativeTimeFormat.supportedLocalesOf should be a function");
 
diff --git a/implementation-contributed/v8/intl/segmenter/check-lb-option.js b/implementation-contributed/v8/intl/segmenter/check-lb-option.js
index b56b76fc95..0e54d18202 100644
--- a/implementation-contributed/v8/intl/segmenter/check-lb-option.js
+++ b/implementation-contributed/v8/intl/segmenter/check-lb-option.js
@@ -11,9 +11,6 @@ let invalid_lb = [
   "keepall",
   "none",
   "standard",
-];
-
-let valid_lb= [
   "strict",
   "normal",
   "loose",
@@ -30,12 +27,3 @@ invalid_lb.forEach(function(lb) {
   assertEquals("en", df.resolvedOptions().locale);
 }
 );
-
-valid_lb.forEach(function(lb) {
-  locales.forEach(function(base) {
-    let l = base + "-u-lb-" + lb;
-    let df = new Intl.Segmenter([l + "-fo-obar"]);
-    assertEquals(l, df.resolvedOptions().locale);
-  });
-}
-);
diff --git a/implementation-contributed/v8/intl/segmenter/constructor-order.js b/implementation-contributed/v8/intl/segmenter/constructor-order.js
index 09ff8f1fe0..e43fb9f963 100644
--- a/implementation-contributed/v8/intl/segmenter/constructor-order.js
+++ b/implementation-contributed/v8/intl/segmenter/constructor-order.js
@@ -13,11 +13,8 @@ new Intl.Segmenter(['en-US'], {
   get localeMatcher() {
     assertEquals(0, getCount++);
   },
-  get lineBreakStyle() {
+  get granularity() {
     assertEquals(1, getCount++);
   },
-  get granularity() {
-    assertEquals(2, getCount++);
-  },
 });
-assertEquals(3, getCount);
+assertEquals(2, getCount);
diff --git a/implementation-contributed/v8/intl/segmenter/constructor.js b/implementation-contributed/v8/intl/segmenter/constructor.js
new file mode 100644
index 0000000000..6612e1eab6
--- /dev/null
+++ b/implementation-contributed/v8/intl/segmenter/constructor.js
@@ -0,0 +1,190 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-intl-segmenter
+
+// Segmenter constructor can't be called as function.
+assertThrows(() => Intl.Segmenter(["sr"]), TypeError);
+
+// Invalid locale string.
+assertThrows(() => new Intl.Segmenter(["abcdefghi"]), RangeError);
+
+assertDoesNotThrow(() => new Intl.Segmenter(["sr"], {}), TypeError);
+
+assertDoesNotThrow(() => new Intl.Segmenter([], {}));
+
+assertDoesNotThrow(() => new Intl.Segmenter(["fr", "ar"], {}));
+
+assertDoesNotThrow(() => new Intl.Segmenter({ 0: "ja", 1: "fr" }, {}));
+
+assertDoesNotThrow(() => new Intl.Segmenter({ 1: "ja", 2: "fr" }, {}));
+
+assertDoesNotThrow(() => new Intl.Segmenter(["sr"]));
+
+assertDoesNotThrow(() => new Intl.Segmenter());
+
+assertDoesNotThrow(
+    () =>
+        new Intl.Segmenter(["sr"], {
+            lineBreakStyle: "strict",
+            granularity: "grapheme"
+        })
+);
+
+assertDoesNotThrow(
+    () => new Intl.Segmenter(["sr"], { granularity: "sentence" })
+);
+
+assertDoesNotThrow(() => new Intl.Segmenter(["sr"], { granularity: "word" }));
+
+assertDoesNotThrow(
+    () => new Intl.Segmenter(["sr"], { granularity: "grapheme" })
+);
+
+assertThrows(() => new Intl.Segmenter(["sr"], { granularity: "line" }), RangeError);
+
+assertThrows(
+    () => new Intl.Segmenter(["sr"], { granularity: "standard" }),
+    RangeError
+);
+
+assertDoesNotThrow(
+    () => new Intl.Segmenter(["sr"], { lineBreakStyle: "normal" })
+);
+
+assertDoesNotThrow(
+    () => new Intl.Segmenter(["sr"], { lineBreakStyle: "strict" })
+);
+
+assertDoesNotThrow(
+    () => new Intl.Segmenter(["sr"], { lineBreakStyle: "loose" })
+);
+
+assertDoesNotThrow(
+    () => new Intl.Segmenter(["sr"], { lineBreakStyle: "giant" })
+);
+
+assertDoesNotThrow(
+    () =>
+        new Intl.Segmenter(["sr"], {
+            granularity: "sentence",
+            lineBreakStyle: "normal"
+        })
+);
+
+assertDoesNotThrow(
+    () =>
+        new Intl.Segmenter(["sr"], {
+            granularity: "sentence",
+            lineBreakStyle: "strict"
+        })
+);
+
+assertDoesNotThrow(
+    () =>
+        new Intl.Segmenter(["sr"], {
+            granularity: "sentence",
+            lineBreakStyle: "loose"
+        })
+);
+
+assertDoesNotThrow(
+    () =>
+        new Intl.Segmenter(["sr"], {
+            granularity: "word",
+            lineBreakStyle: "normal"
+        })
+);
+
+assertDoesNotThrow(
+    () =>
+        new Intl.Segmenter(["sr"], {
+            granularity: "word",
+            lineBreakStyle: "strict"
+        })
+);
+
+assertDoesNotThrow(
+    () =>
+        new Intl.Segmenter(["sr"], {
+            granularity: "word",
+            lineBreakStyle: "loose"
+        })
+);
+
+assertDoesNotThrow(
+    () =>
+        new Intl.Segmenter(["sr"], {
+            granularity: "grapheme",
+            lineBreakStyle: "normal"
+        })
+);
+
+assertDoesNotThrow(
+    () =>
+        new Intl.Segmenter(["sr"], {
+            granularity: "grapheme",
+            lineBreakStyle: "strict"
+        })
+);
+
+assertDoesNotThrow(
+    () =>
+        new Intl.Segmenter(["sr"], {
+            granularity: "grapheme",
+            lineBreakStyle: "loose"
+        })
+);
+
+assertThrows(
+    () =>
+        new Intl.Segmenter(["sr"], {
+            granularity: "line",
+            lineBreakStyle: "loose"
+        }), RangeError
+);
+
+assertThrows(
+    () =>
+        new Intl.Segmenter(["sr"], {
+            granularity: "line",
+            lineBreakStyle: "normal"
+        }), RangeError
+);
+
+assertThrows(
+    () =>
+        new Intl.Segmenter(["sr"], {
+            granularity: "line",
+            lineBreakStyle: "strict"
+        }), RangeError
+);
+
+// propagate exception from getter
+assertThrows(
+    () =>
+        new Intl.Segmenter(undefined, {
+            get localeMatcher() {
+                throw new TypeError("");
+            }
+        }),
+    TypeError
+);
+assertDoesNotThrow(
+    () =>
+        new Intl.Segmenter(undefined, {
+            get lineBreakStyle() {
+                throw new TypeError("");
+            }
+        })
+);
+assertThrows(
+    () =>
+        new Intl.Segmenter(undefined, {
+            get granularity() {
+                throw new TypeError("");
+            }
+        }),
+    TypeError
+);
diff --git a/implementation-contributed/v8/intl/segmenter/segment-iterator.js b/implementation-contributed/v8/intl/segmenter/segment-iterator.js
index 531394f636..696ffab554 100644
--- a/implementation-contributed/v8/intl/segmenter/segment-iterator.js
+++ b/implementation-contributed/v8/intl/segmenter/segment-iterator.js
@@ -5,7 +5,7 @@
 // Flags: --harmony-intl-segmenter
 
 const text = "Hello World, Test 123! Foo Bar. How are you?";
-for (const granularity of ["grapheme", "word", "sentence", "line"]) {
+for (const granularity of ["grapheme", "word", "sentence"]) {
   const segmenter = new Intl.Segmenter("en", { granularity });
   const iter = segmenter.segment(text);
 
diff --git a/implementation-contributed/v8/intl/segmenter/segment-line-following.js b/implementation-contributed/v8/intl/segmenter/segment-line-following.js
deleted file mode 100644
index 77a17a6d49..0000000000
--- a/implementation-contributed/v8/intl/segmenter/segment-line-following.js
+++ /dev/null
@@ -1,38 +0,0 @@
-// Copyright 2018 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --harmony-intl-segmenter
-
-const seg = new Intl.Segmenter([], {granularity: "line"})
-for (const text of [
-    "Hello world!", // English
-    " Hello world! ",  // English with space before/after
-    " Hello world? Foo bar!", // English
-    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
-    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
-    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
-    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
-    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
-    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
-    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
-    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
-    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
-    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
-    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
-    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
-    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
-    ]) {
-  const iter = seg.segment(text);
-  let prev = 0;
-  let segments = [];
-  while (!iter.following()) {
-    assertTrue(["soft", "hard"].includes(iter.breakType), iter.breakType);
-    assertTrue(iter.index >= 0);
-    assertTrue(iter.index <= text.length);
-    assertTrue(iter.index > prev);
-    segments.push(text.substring(prev, iter.index));
-    prev = iter.index;
-  }
-  assertEquals(text, segments.join(""));
-}
diff --git a/implementation-contributed/v8/intl/segmenter/segment-line-iterable.js b/implementation-contributed/v8/intl/segmenter/segment-line-iterable.js
deleted file mode 100644
index 262bb669d5..0000000000
--- a/implementation-contributed/v8/intl/segmenter/segment-line-iterable.js
+++ /dev/null
@@ -1,45 +0,0 @@
-// Copyright 2018 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --harmony-intl-segmenter
-
-const seg = new Intl.Segmenter([], {granularity: "line"})
-for (const text of [
-    "Hello world!", // English
-    " Hello world! ",  // English with space before/after
-    " Hello world? Foo bar!", // English
-    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
-    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
-    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
-    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
-    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
-    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
-    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
-    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
-    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
-    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
-    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
-    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
-    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
-    ]) {
-  let segments = [];
-  // Create another %SegmentIterator% to compare with result from the one that
-  // created in the for of loop.
-  let iter = seg.segment(text);
-  let prev = 0;
-  for (const v of seg.segment(text)) {
-    assertTrue(["soft", "hard"].includes(v.breakType), v.breakType);
-    assertEquals("string", typeof v.segment);
-    assertTrue(v.segment.length > 0);
-    segments.push(v.segment);
-
-    // manually advance the iter.
-    assertFalse(iter.following());
-    assertEquals(iter.breakType, v.breakType);
-    assertEquals(text.substring(prev, iter.index), v.segment);
-    prev = iter.index;
-  }
-  assertTrue(iter.following());
-  assertEquals(text, segments.join(''));
-}
diff --git a/implementation-contributed/v8/intl/segmenter/segment-line-next.js b/implementation-contributed/v8/intl/segmenter/segment-line-next.js
deleted file mode 100644
index 7bbe9a4491..0000000000
--- a/implementation-contributed/v8/intl/segmenter/segment-line-next.js
+++ /dev/null
@@ -1,40 +0,0 @@
-// Copyright 2018 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --harmony-intl-segmenter
-
-const seg = new Intl.Segmenter([], {granularity: "line"})
-for (const text of [
-    "Hello world!", // English
-    " Hello world! ",  // English with space before/after
-    " Hello world? Foo bar!", // English
-    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
-    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
-    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
-    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
-    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
-    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
-    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
-    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
-    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
-    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
-    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
-    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
-    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
-    ]) {
-  const iter = seg.segment(text);
-  let segments = [];
-  let oldPos = -1;
-  for (let result = iter.next(); !result.done; result = iter.next()) {
-    const v = result.value;
-    assertTrue(["soft", "hard"].includes(iter.breakType), iter.breakType);
-    assertEquals("string", typeof v.segment);
-    assertTrue(v.segment.length > 0);
-    segments.push(v.segment);
-    assertEquals("number", typeof v.index);
-    assertTrue(oldPos < v.index);
-    oldPos = v.index;
-  }
-  assertEquals(text, segments.join(''));
-}
diff --git a/implementation-contributed/v8/intl/segmenter/segment-line-preceding.js b/implementation-contributed/v8/intl/segmenter/segment-line-preceding.js
deleted file mode 100644
index 2e6569cc99..0000000000
--- a/implementation-contributed/v8/intl/segmenter/segment-line-preceding.js
+++ /dev/null
@@ -1,44 +0,0 @@
-// Copyright 2018 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --harmony-intl-segmenter
-
-const seg = new Intl.Segmenter([], {granularity: "line"})
-for (const text of [
-    "Hello world!", // English
-    " Hello world! ",  // English with space before/after
-    " Hello world? Foo bar!", // English
-    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
-    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
-    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
-    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
-    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
-    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
-    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
-    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
-    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
-    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
-    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
-    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
-    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
-    ]) {
-  const iter = seg.segment(text);
-  let prev = text.length;
-  let segments = [];
-  iter.preceding(prev)
-  assertTrue(["soft", "hard"].includes(iter.breakType), iter.breakType);
-  assertTrue(iter.index >= 0);
-  assertTrue(iter.index < prev);
-  segments.push(text.substring(iter.index, prev));
-  prev = iter.index;
-  while (!iter.preceding()) {
-    assertTrue(["soft", "hard"].includes(iter.breakType), iter.breakType);
-    assertTrue(iter.index >= 0);
-    assertTrue(iter.index <= text.length);
-    assertTrue(iter.index < prev);
-    segments.push(text.substring(iter.index, prev));
-    prev = iter.index;
-  }
-  assertEquals(text, segments.reverse().join(""));
-}
diff --git a/implementation-contributed/v8/intl/segmenter/segment-line.js b/implementation-contributed/v8/intl/segmenter/segment-line.js
deleted file mode 100644
index 8ac522e723..0000000000
--- a/implementation-contributed/v8/intl/segmenter/segment-line.js
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright 2018 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --harmony-intl-segmenter
-
-const seg = new Intl.Segmenter([], {granularity: "line"})
-for (const text of [
-    "Hello world!", // English
-    " Hello world! ",  // English with space before/after
-    " Hello world? Foo bar!", // English
-    "Jedovatou mambu objevila žena v zahrádkářské kolonii.", // Czech
-    "Việt Nam: Nhất thể hóa sẽ khác Trung Quốc?",  // Vietnamese
-    "Σοβαρές ενστάσεις Κομισιόν για τον προϋπολογισμό της Ιταλίας", // Greek
-    "Решение Индии о покупке российских С-400 расценили как вызов США",  // Russian
-    "הרופא שהציל נשים והנערה ששועבדה ע",  // Hebrew,
-    "ترامب للملك سلمان: أنا جاد للغاية.. عليك دفع المزيد", // Arabic
-    "भारत की एस 400 मिसाइल के मुकाबले पाक की थाड, जानें कौन कितना ताकतवर",  //  Hindi
-    "ரெட் அலர்ட் எச்சரிக்கை; புதுச்சேரியில் நாளை அரசு விடுமுறை!", // Tamil
-    "'ఉత్తర్వులు అందే వరకు ఓటర్ల తుది జాబితాను వెబ్‌సైట్లో పెట్టవద్దు'", // Telugu
-    "台北》抹黑柯P失敗？朱學恒酸：姚文智氣pupu嗆大老闆", // Chinese
-    "วัดไทรตีระฆังเบาลงช่วงเข้าพรรษา เจ้าอาวาสเผยคนร้องเรียนรับผลกรรมแล้ว",  // Thai
-    "九州北部の一部が暴風域に入りました(日直予報士 2018年10月06日) - 日本気象協会 tenki.jp",  // Japanese
-    "법원 “다스 지분 처분권·수익권 모두 MB가 보유”", // Korean
-    ]) {
-  const iter = seg.segment(text);
-  assertEquals(undefined, iter.breakType);
-  assertEquals(0, iter.index);
-}
diff --git a/implementation-contributed/v8/mjsunit/array-sort.js b/implementation-contributed/v8/mjsunit/array-sort.js
index 8c2c6fca63..ca0daadf04 100644
--- a/implementation-contributed/v8/mjsunit/array-sort.js
+++ b/implementation-contributed/v8/mjsunit/array-sort.js
@@ -567,6 +567,27 @@ function TestPrototypeHoles() {
 }
 TestPrototypeHoles();
 
+// The following test ensures that elements on the prototype are also copied
+// for JSArrays and not only JSObjects.
+function TestArrayPrototypeHasElements() {
+  let array = [1, 2, 3, 4, 5];
+  for (let i = 0; i < array.length; i++) {
+    delete array[i];
+    Object.prototype[i] = 42;
+  }
+
+  let comparator_called = false;
+  array.sort(function (a, b) {
+    if (a === 42 || b === 42) {
+      comparator_called = true;
+    }
+    return a - b;
+  });
+
+  assertTrue(comparator_called);
+}
+TestArrayPrototypeHasElements();
+
 // The following Tests make sure that there is no crash when the element kind
 // or the array length changes. Since comparison functions like this are not
 // consistent, we do not have to make sure that the array is actually sorted
diff --git a/implementation-contributed/v8/mjsunit/compiler/regress-924151.js b/implementation-contributed/v8/mjsunit/compiler/regress-924151.js
new file mode 100644
index 0000000000..cfaaedfb21
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/compiler/regress-924151.js
@@ -0,0 +1,28 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax
+
+function g(code) {
+  try {
+    if (typeof code === 'function') {
+      +Symbol();
+    } else {
+      eval();
+    }
+  } catch (e) {
+    return;
+  }
+  dummy();
+}
+
+function f() {
+  g(g);
+}
+
+try { g(); } catch(e) {; }
+
+f();
+%OptimizeFunctionOnNextCall(f);
+f();
diff --git a/implementation-contributed/v8/mjsunit/es6/for-each-in-catch.js b/implementation-contributed/v8/mjsunit/es6/for-each-in-catch.js
index 674cddd047..b38013eeb3 100644
--- a/implementation-contributed/v8/mjsunit/es6/for-each-in-catch.js
+++ b/implementation-contributed/v8/mjsunit/es6/for-each-in-catch.js
@@ -5,25 +5,25 @@
 function checkIsRedeclarationError(code) {
   try {
     eval(`
-checkIsRedeclarationError : {
-  break checkIsRedeclarationError;
-${code}
-}
-`);
+      checkIsRedeclarationError: {
+        break checkIsRedeclarationError;
+        ${code}
+      }
+    `);
     assertUnreachable();
-  } catch(e) {
-    assertInstanceof(e, SyntaxError );
-    assertTrue( e.toString().indexOf("has already been declared") >= 0 );
+  } catch (e) {
+    assertInstanceof(e, SyntaxError);
+    assertTrue(e.toString().includes("has already been declared"));
   }
 }
 
 function checkIsNotRedeclarationError(code) {
-  assertDoesNotThrow(()=>eval(`
-checkIsNotRedeclarationError_label : {
-  break checkIsNotRedeclarationError_label;
-${code}
-}
-`));
+  assertDoesNotThrow(() => eval(`
+    checkIsNotRedeclarationError_label: {
+      break checkIsNotRedeclarationError_label;
+      ${code}
+    }
+  `));
 }
 
 
@@ -52,143 +52,145 @@ let not_var_e = [
   'const {f:e}'
 ];
 
-// Check that `for (var ... of ...)` cannot redeclare a simple catch variable
-// but `for (var ... in ...)` can.
+// Check that both `for (var ... of ...)` and `for (var ... in ...)`
+// can redeclare a simple catch variable.
 for (let binding of var_e) {
-  checkIsRedeclarationError(`
-try {
-  throw 0;
-} catch(e) {
-  for (${binding} of []);
-}
-`);
-
   checkIsNotRedeclarationError(`
-try {
-  throw 0;
-} catch(e) {
-  for (${binding} in []);
-}
-`);
-}
-
-// Check that the above error occurs even for nested catches.
-for (let binding of var_e) {
-  checkIsRedeclarationError(`
-try {
-  throw 0;
-} catch(e) {
-  try {
-    throw 1;
-  } catch(f) {
     try {
-      throw 2;
-    } catch({}) {
+      throw 0;
+    } catch (e) {
       for (${binding} of []);
     }
-  }
-}
-`);
+  `);
 
   checkIsNotRedeclarationError(`
-try {
-  throw 0;
-} catch(e) {
-  try {
-    throw 1;
-  } catch(f) {
     try {
-      throw 2;
-    } catch({}) {
+      throw 0;
+    } catch (e) {
       for (${binding} in []);
     }
-  }
-}
-`);
+  `);
 }
 
-// Check that the above error does not occur if a declaration scope is between
-// the catch and the loop.
+// Check that the above applies even for nested catches.
 for (let binding of var_e) {
   checkIsNotRedeclarationError(`
-try {
-  throw 0;
-} catch(e) {
-  (()=>{for (${binding} of []);})();
-}
-`);
+    try {
+      throw 0;
+    } catch (e) {
+      try {
+        throw 1;
+      } catch (f) {
+        try {
+          throw 2;
+        } catch ({}) {
+          for (${binding} of []);
+        }
+      }
+    }
+  `);
 
   checkIsNotRedeclarationError(`
-try {
-  throw 0;
-} catch(e) {
-  (function(){for (${binding} of []);})();
+    try {
+      throw 0;
+    } catch (e) {
+      try {
+        throw 1;
+      } catch (f) {
+        try {
+          throw 2;
+        } catch ({}) {
+          for (${binding} in []);
+        }
+      }
+    }
+  `);
 }
-`);
+
+// Check that the above applies if a declaration scope is between the
+// catch and the loop.
+for (let binding of var_e) {
+  checkIsNotRedeclarationError(`
+    try {
+      throw 0;
+    } catch (e) {
+      (()=>{for (${binding} of []);})();
+    }
+  `);
+
+  checkIsNotRedeclarationError(`
+    try {
+      throw 0;
+    } catch (e) {
+      (function() {
+        for (${binding} of []);
+      })();
+    }
+  `);
 }
 
 // Check that there is no error when not declaring a var named e.
 for (let binding of not_var_e) {
   checkIsNotRedeclarationError(`
-try {
-  throw 0;
-} catch(e) {
-  for (${binding} of []);
-}
-`);
+    try {
+      throw 0;
+    } catch (e) {
+      for (${binding} of []);
+    }
+  `);
 }
 
 // Check that there is an error for both for-in and for-of when redeclaring
-// a non-simple catch parameter
+// a non-simple catch parameter.
 for (let binding of var_e) {
   checkIsRedeclarationError(`
-try {
-  throw 0;
-} catch({e}) {
-  for (${binding} of []);
-}
-`);
+    try {
+      throw 0;
+    } catch ({e}) {
+      for (${binding} of []);
+    }
+  `);
 
   checkIsRedeclarationError(`
-try {
-  throw 0;
-} catch({e}) {
-  for (${binding} in []);
-}
-`);
+    try {
+      throw 0;
+    } catch ({e}) {
+      for (${binding} in []);
+    }
+  `);
 }
 
 // Check that the above error occurs even for nested catches.
 for (let binding of var_e) {
   checkIsRedeclarationError(`
-try {
-  throw 0;
-} catch({e}) {
-  try {
-    throw 1;
-  } catch(f) {
     try {
-      throw 2;
-    } catch({}) {
-      for (${binding} of []);
+      throw 0;
+    } catch ({e}) {
+      try {
+        throw 1;
+      } catch (f) {
+        try {
+          throw 2;
+        } catch ({}) {
+          for (${binding} of []);
+        }
+      }
     }
-  }
-}
-`);
+  `);
 
   checkIsRedeclarationError(`
-try {
-  throw 0;
-} catch({e}) {
-  try {
-    throw 1;
-  } catch(f) {
     try {
-      throw 2;
-    } catch({}) {
-      for (${binding} in []);
+      throw 0;
+    } catch ({e}) {
+      try {
+        throw 1;
+      } catch (f) {
+        try {
+          throw 2;
+        } catch ({}) {
+          for (${binding} in []);
+        }
+      }
     }
-  }
-}
-`);
+  `);
 }
diff --git a/implementation-contributed/v8/mjsunit/es6/proxies-ownkeys.js b/implementation-contributed/v8/mjsunit/es6/proxies-ownkeys.js
index 7cc0a87b68..3b9011acdc 100644
--- a/implementation-contributed/v8/mjsunit/es6/proxies-ownkeys.js
+++ b/implementation-contributed/v8/mjsunit/es6/proxies-ownkeys.js
@@ -54,9 +54,9 @@ assertEquals(["a", "b", "c"], Reflect.ownKeys(proxy));
 keys.length = Math.pow(2, 33);
 assertThrows("Reflect.ownKeys(proxy)", RangeError);
 
-// Check that we allow duplicated keys.
+// Check that we don't allow duplicated keys.
 keys  = ['a', 'a', 'a']
-assertEquals(keys, Reflect.ownKeys(proxy));
+assertThrows("Reflect.ownKeys(proxy)", TypeError);
 
 // Non-Name results throw.
 keys = [1];
@@ -75,9 +75,9 @@ assertThrows("Reflect.ownKeys(proxy)", TypeError);
 keys = ["nonconf"];
 assertEquals(keys, Reflect.ownKeys(proxy));
 
-// Check that we allow duplicated keys.
+// Check that we don't allow duplicated keys.
 keys  = ['nonconf', 'nonconf', 'nonconf']
-assertEquals(keys, Reflect.ownKeys(proxy));
+assertThrows("Reflect.ownKeys(proxy)", TypeError);
 
 // Step 19a: The trap result must all keys of a non-extensible target.
 Object.preventExtensions(target);
@@ -89,6 +89,6 @@ assertEquals(keys, Reflect.ownKeys(proxy));
 keys = ["nonconf", "target_one", "fantasy"];
 assertThrows("Reflect.ownKeys(proxy)", TypeError);
 
-// Check that we allow duplicated keys.
+// Check that we don't allow duplicated keys.
 keys  = ['nonconf', 'target_one', 'nonconf', 'nonconf', 'target_one',]
-assertEquals(keys, Reflect.ownKeys(proxy));
+assertThrows("Reflect.ownKeys(proxy)", TypeError);
diff --git a/implementation-contributed/v8/mjsunit/es6/typedarray-sort.js b/implementation-contributed/v8/mjsunit/es6/typedarray-sort.js
index c5c4ff079a..7cd08b1258 100644
--- a/implementation-contributed/v8/mjsunit/es6/typedarray-sort.js
+++ b/implementation-contributed/v8/mjsunit/es6/typedarray-sort.js
@@ -69,6 +69,31 @@ for (var constructor of typedArrayConstructors) {
   assertThrows(() => array.sort(), TypeError);
 }
 
+// Check that TypedArray.p.sort is stable.
+for (let constructor of typedArrayConstructors) {
+  // Sort an array [0..kSize-1] modulo 4. If the sort is stable, the array
+  // will be partitioned into 4 parts, where each part has only increasing
+  // elements.
+  const kSize = 128;
+  const kModulo = 4;
+  const kRunSize = kSize / kModulo;
+
+  const template = Array.from({ length: kSize }, (_, i) => i);
+  const array = new constructor(template);
+
+  const compare = (a, b) => (b % kModulo) - (a % kModulo);
+  array.sort(compare);
+
+  function assertIncreasing(from) {
+    for (let i = from + 1; i < from + kRunSize; ++i) {
+      assertTrue(array[i - 1] < array[i]);
+      assertEquals(array[i - 1] % kModulo, array[i] % kModulo);
+    }
+  }
+
+  for (let i = 0; i < kModulo; ++i) assertIncreasing(i * kRunSize);
+}
+
 // The following creates a test for each typed element kind, where the array
 // to sort consists of some max/min/zero elements.
 //
diff --git a/implementation-contributed/v8/mjsunit/es8/object-entries.js b/implementation-contributed/v8/mjsunit/es8/object-entries.js
index 51ce4692e4..f119cfc113 100644
--- a/implementation-contributed/v8/mjsunit/es8/object-entries.js
+++ b/implementation-contributed/v8/mjsunit/es8/object-entries.js
@@ -144,29 +144,11 @@ function TestOrderWithDuplicates(withWarmup) {
   });
 
   if (withWarmup) {
-    for (const key in P) {}
+    for (const key in O) {};
+    try { for (const key in P) {} } catch {};
   }
-  log = [];
 
-  assertEquals([
-    ["a", 1],
-    ["a", 1],
-    ["456", 123],
-    ["456", 123]
-  ], Object.entries(P));
-  assertEquals([
-    "[[OwnPropertyKeys]]",
-    "[[GetOwnProperty]](\"a\")",
-    "[[Get]](\"a\")",
-    "[[GetOwnProperty]](\"a\")",
-    "[[Get]](\"a\")",
-    "[[GetOwnProperty]](\"456\")",
-    "[[Get]](\"456\")",
-    "[[GetOwnProperty]](\"HIDDEN\")",
-    "[[GetOwnProperty]](\"HIDDEN\")",
-    "[[GetOwnProperty]](\"456\")",
-    "[[Get]](\"456\")"
-  ], log);
+  assertThrows(() => Object.entries(P), TypeError);
 }
 TestOrderWithDuplicates();
 TestOrderWithDuplicates(true);
diff --git a/implementation-contributed/v8/mjsunit/es8/object-get-own-property-descriptors.js b/implementation-contributed/v8/mjsunit/es8/object-get-own-property-descriptors.js
index f88840dba4..0bd84bd6fe 100644
--- a/implementation-contributed/v8/mjsunit/es8/object-get-own-property-descriptors.js
+++ b/implementation-contributed/v8/mjsunit/es8/object-get-own-property-descriptors.js
@@ -193,21 +193,7 @@ function TestDuplicateKeys() {
     defineProperty(target, name, desc) { assertUnreachable(); }
   });
 
-  var result = Object.getOwnPropertyDescriptors(P);
-  assertEquals({
-    "A": {
-      "value": "VALUE",
-      "writable": false,
-      "enumerable": false,
-      "configurable": true
-    }
-  }, result);
-  assertTrue(result.hasOwnProperty("A"));
-  assertEquals([
-    "ownKeys()",
-    "getOwnPropertyDescriptor(A)",
-    "getOwnPropertyDescriptor(A)"
-  ], log);
+  assertThrows(() => Object.getOwnPropertyDescriptors(P), TypeError);
 }
 TestDuplicateKeys();
 
diff --git a/implementation-contributed/v8/mjsunit/es8/object-values.js b/implementation-contributed/v8/mjsunit/es8/object-values.js
index 23fcaed1bc..b66e4af7d3 100644
--- a/implementation-contributed/v8/mjsunit/es8/object-values.js
+++ b/implementation-contributed/v8/mjsunit/es8/object-values.js
@@ -121,20 +121,7 @@ function TestOrderWithDuplicates() {
     }
   });
 
-  assertEquals([1, 1, 123, 123], Object.values(P));
-  assertEquals([
-    "[[OwnPropertyKeys]]",
-    "[[GetOwnProperty]](\"a\")",
-    "[[Get]](\"a\")",
-    "[[GetOwnProperty]](\"a\")",
-    "[[Get]](\"a\")",
-    "[[GetOwnProperty]](\"456\")",
-    "[[Get]](\"456\")",
-    "[[GetOwnProperty]](\"HIDDEN\")",
-    "[[GetOwnProperty]](\"HIDDEN\")",
-    "[[GetOwnProperty]](\"456\")",
-    "[[Get]](\"456\")",
-  ], log);
+  assertThrows(() => Object.values(P), TypeError);
 }
 TestOrderWithDuplicates();
 
diff --git a/implementation-contributed/v8/mjsunit/for-of-in-catch-duplicate-decl.js b/implementation-contributed/v8/mjsunit/for-of-in-catch-duplicate-decl.js
new file mode 100644
index 0000000000..e1fdd43c94
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/for-of-in-catch-duplicate-decl.js
@@ -0,0 +1,5 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+assertDoesNotThrow("try { } catch (e) { var e; for (var e of []) {} }")
diff --git a/implementation-contributed/v8/mjsunit/harmony/array-flat-species.js b/implementation-contributed/v8/mjsunit/harmony/array-flat-species.js
index d04f8a0875..7181c10bea 100644
--- a/implementation-contributed/v8/mjsunit/harmony/array-flat-species.js
+++ b/implementation-contributed/v8/mjsunit/harmony/array-flat-species.js
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-array-flat
-
 {
   class MyArray extends Array {
     static get [Symbol.species]() {
diff --git a/implementation-contributed/v8/mjsunit/harmony/array-flat.js b/implementation-contributed/v8/mjsunit/harmony/array-flat.js
index 86571e8dce..9a291dc3b0 100644
--- a/implementation-contributed/v8/mjsunit/harmony/array-flat.js
+++ b/implementation-contributed/v8/mjsunit/harmony/array-flat.js
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-array-flat
-
 assertEquals(Array.prototype.flat.length, 0);
 assertEquals(Array.prototype.flat.name, 'flat');
 
diff --git a/implementation-contributed/v8/mjsunit/harmony/array-flatMap-species.js b/implementation-contributed/v8/mjsunit/harmony/array-flatMap-species.js
index d4159b4801..48f9bea2d0 100644
--- a/implementation-contributed/v8/mjsunit/harmony/array-flatMap-species.js
+++ b/implementation-contributed/v8/mjsunit/harmony/array-flatMap-species.js
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-array-flat
-
 {
   class MyArray extends Array {
     static get [Symbol.species]() {
diff --git a/implementation-contributed/v8/mjsunit/harmony/array-flatMap.js b/implementation-contributed/v8/mjsunit/harmony/array-flatMap.js
index 9f0426fe7f..65a4025603 100644
--- a/implementation-contributed/v8/mjsunit/harmony/array-flatMap.js
+++ b/implementation-contributed/v8/mjsunit/harmony/array-flatMap.js
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-array-flat --allow-natives-syntax
+// Flags: --allow-natives-syntax
 
 assertEquals(Array.prototype.flatMap.length, 1);
 assertEquals(Array.prototype.flatMap.name, 'flatMap');
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/basics.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/basics.js
index 88fb020101..c1ec4070f4 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/basics.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/basics.js
@@ -4,151 +4,88 @@
 
 // Flags: --harmony-weak-refs
 
-(function TestConstructWeakFactory() {
-  let wf = new WeakFactory(() => {});
-  assertEquals(wf.toString(), "[object WeakFactory]");
-  assertNotSame(wf.__proto__, Object.prototype);
-  assertSame(wf.__proto__.__proto__, Object.prototype);
+(function TestConstructFinalizationGroup() {
+  let fg = new FinalizationGroup(() => {});
+  assertEquals(fg.toString(), "[object FinalizationGroup]");
+  assertNotSame(fg.__proto__, Object.prototype);
+  assertSame(fg.__proto__.__proto__, Object.prototype);
 })();
 
-(function TestWeakFactoryConstructorCallAsFunction() {
+(function TestFinalizationGroupConstructorCallAsFunction() {
   let caught = false;
   let message = "";
   try {
-    let f = WeakFactory(() => {});
+    let f = FinalizationGroup(() => {});
   } catch (e) {
     message = e.message;
     caught = true;
   } finally {
     assertTrue(caught);
-    assertEquals(message, "Constructor WeakFactory requires 'new'");
+    assertEquals(message, "Constructor FinalizationGroup requires 'new'");
   }
 })();
 
-(function TestConstructWeakFactoryCleanupNotCallable() {
-  let message = "WeakFactory: cleanup must be callable";
-  assertThrows(() => { let wf = new WeakFactory(); }, TypeError, message);
-  assertThrows(() => { let wf = new WeakFactory(1); }, TypeError, message);
-  assertThrows(() => { let wf = new WeakFactory(null); }, TypeError, message);
+(function TestConstructFinalizationGroupCleanupNotCallable() {
+  let message = "FinalizationGroup: cleanup must be callable";
+  assertThrows(() => { let fg = new FinalizationGroup(); }, TypeError, message);
+  assertThrows(() => { let fg = new FinalizationGroup(1); }, TypeError, message);
+  assertThrows(() => { let fg = new FinalizationGroup(null); }, TypeError, message);
 })();
 
-(function TestConstructWeakFactoryWithCallableProxyAsCleanup() {
+(function TestConstructFinalizationGroupWithCallableProxyAsCleanup() {
   let handler = {};
   let obj = () => {};
   let proxy = new Proxy(obj, handler);
-  let wf = new WeakFactory(proxy);
+  let fg = new FinalizationGroup(proxy);
 })();
 
-(function TestConstructWeakFactoryWithNonCallableProxyAsCleanup() {
-  let message = "WeakFactory: cleanup must be callable";
+(function TestConstructFinalizationGroupWithNonCallableProxyAsCleanup() {
+  let message = "FinalizationGroup: cleanup must be callable";
   let handler = {};
   let obj = {};
   let proxy = new Proxy(obj, handler);
-  assertThrows(() => { let wf = new WeakFactory(proxy); }, TypeError, message);
+  assertThrows(() => { let fg = new FinalizationGroup(proxy); }, TypeError, message);
 })();
 
-(function TestMakeCell() {
-  let wf = new WeakFactory(() => {});
-  let wc = wf.makeCell({});
-  assertEquals(wc.toString(), "[object WeakCell]");
-  assertNotSame(wc.__proto__, Object.prototype);
-  assertSame(wc.__proto__.__proto__, Object.prototype);
-  assertEquals(wc.holdings, undefined);
-
-  let holdings_desc = Object.getOwnPropertyDescriptor(wc.__proto__, "holdings");
-  assertEquals(true, holdings_desc.configurable);
-  assertEquals(false, holdings_desc.enumerable);
-  assertEquals("function", typeof holdings_desc.get);
-  assertEquals(undefined, holdings_desc.set);
-
-  let clear_desc = Object.getOwnPropertyDescriptor(wc.__proto__, "clear");
-  assertEquals(true, clear_desc.configurable);
-  assertEquals(false, clear_desc.enumerable);
-  assertEquals("function", typeof clear_desc.value);
+(function TestRegisterWithNonObjectTarget() {
+  let fg = new FinalizationGroup(() => {});
+  let message = "FinalizationGroup.prototype.register: target must be an object";
+  assertThrows(() => fg.register(1, "holdings"), TypeError, message);
+  assertThrows(() => fg.register(false, "holdings"), TypeError, message);
+  assertThrows(() => fg.register("foo", "holdings"), TypeError, message);
+  assertThrows(() => fg.register(Symbol(), "holdings"), TypeError, message);
+  assertThrows(() => fg.register(null, "holdings"), TypeError, message);
+  assertThrows(() => fg.register(undefined, "holdings"), TypeError, message);
 })();
 
-(function TestMakeCellWithHoldings() {
-  let wf = new WeakFactory(() => {});
-  let obj = {a: 1};
-  let holdings = {b: 2};
-  let wc = wf.makeCell(obj, holdings);
-  assertSame(wc.holdings, holdings);
-})();
-
-(function TestMakeCellWithHoldingsSetHoldings() {
-  let wf = new WeakFactory(() => {});
-  let obj = {a: 1};
-  let holdings = {b: 2};
-  let wc = wf.makeCell(obj, holdings);
-  assertSame(wc.holdings, holdings);
-  wc.holdings = 5;
-  assertSame(wc.holdings, holdings);
-})();
-
-(function TestMakeCellWithHoldingsSetHoldingsStrict() {
-  "use strict";
-  let wf = new WeakFactory(() => {});
-  let obj = {a: 1};
-  let holdings = {b: 2};
-  let wc = wf.makeCell(obj, holdings);
-  assertSame(wc.holdings, holdings);
-  assertThrows(() => { wc.holdings = 5; }, TypeError);
-  assertSame(wc.holdings, holdings);
-})();
-
-(function TestMakeCellWithNonObject() {
-  let wf = new WeakFactory(() => {});
-  let message = "WeakFactory.prototype.makeCell: target must be an object";
-  assertThrows(() => wf.makeCell(), TypeError, message);
-  assertThrows(() => wf.makeCell(1), TypeError, message);
-  assertThrows(() => wf.makeCell(false), TypeError, message);
-  assertThrows(() => wf.makeCell("foo"), TypeError, message);
-  assertThrows(() => wf.makeCell(Symbol()), TypeError, message);
-  assertThrows(() => wf.makeCell(null), TypeError, message);
-  assertThrows(() => wf.makeCell(undefined), TypeError, message);
-})();
-
-(function TestMakeCellWithProxy() {
+(function TestRegisterWithProxy() {
   let handler = {};
   let obj = {};
   let proxy = new Proxy(obj, handler);
-  let wf = new WeakFactory(() => {});
-  let wc = wf.makeCell(proxy);
+  let fg = new FinalizationGroup(() => {});
+  fg.register(proxy);
 })();
 
-(function TestMakeCellTargetAndHoldingsSameValue() {
-  let wf = new WeakFactory(() => {});
+(function TestRegisterTargetAndHoldingsSameValue() {
+  let fg = new FinalizationGroup(() => {});
   let obj = {a: 1};
   // SameValue(target, holdings) not ok
-  assertThrows(() => wf.makeCell(obj, obj), TypeError,
-               "WeakFactory.prototype.makeCell: target and holdings must not be same");
+  assertThrows(() => fg.register(obj, obj), TypeError,
+               "FinalizationGroup.prototype.register: target and holdings must not be same");
   let holdings = {a: 1};
-  let wc = wf.makeCell(obj, holdings);
+  fg.register(obj, holdings);
 })();
 
-(function TestMakeCellWithoutWeakFactory() {
-  assertThrows(() => WeakFactory.prototype.makeCell.call({}, {}), TypeError);
+(function TestRegisterWithoutFinalizationGroup() {
+  assertThrows(() => FinalizationGroup.prototype.register.call({}, {}, "holdings"), TypeError);
   // Does not throw:
-  let wf = new WeakFactory(() => {});
-  WeakFactory.prototype.makeCell.call(wf, {});
+  let fg = new FinalizationGroup(() => {});
+  FinalizationGroup.prototype.register.call(fg, {}, "holdings");
 })();
 
-(function TestHoldingsWithoutWeakCell() {
-  let wf = new WeakFactory(() => {});
-  let wc = wf.makeCell({});
-  let holdings_getter = Object.getOwnPropertyDescriptor(wc.__proto__, "holdings").get;
-  assertThrows(() => holdings_getter.call({}), TypeError);
-  // Does not throw:
-  holdings_getter.call(wc);
-})();
-
-(function TestClearWithoutWeakCell() {
-  let wf = new WeakFactory(() => {});
-  let wc = wf.makeCell({});
-  let clear = Object.getOwnPropertyDescriptor(wc.__proto__, "clear").value;
-  assertThrows(() => clear.call({}), TypeError);
-  // Does not throw:
-  clear.call(wc);
+(function TestUnregisterWithNonExistentKey() {
+  let fg = new FinalizationGroup(() => {});
+  fg.unregister({"k": "whatever"});
 })();
 
 (function TestWeakRefConstructor() {
@@ -194,21 +131,10 @@
   let wr = new WeakRef(proxy);
 })();
 
-(function TestCleanupSomeWithoutWeakFactory() {
-  assertThrows(() => WeakFactory.prototype.cleanupSome.call({}), TypeError);
+(function TestCleanupSomeWithoutFinalizationGroup() {
+  assertThrows(() => FinalizationGroup.prototype.cleanupSome.call({}), TypeError);
   // Does not throw:
-  let wf = new WeakFactory(() => {});
-  let rv = WeakFactory.prototype.cleanupSome.call(wf);
+  let fg = new FinalizationGroup(() => {});
+  let rv = FinalizationGroup.prototype.cleanupSome.call(fg);
   assertEquals(undefined, rv);
 })();
-
-(function TestDerefWithoutWeakRef() {
-  let wf = new WeakFactory(() => {});
-  let wc = wf.makeCell({});
-  let wr = new WeakRef({});
-  let deref = Object.getOwnPropertyDescriptor(wr.__proto__, "deref").value;
-  assertThrows(() => deref.call({}), TypeError);
-  assertThrows(() => deref.call(wc), TypeError);
-  // Does not throw:
-  deref.call(wr);
-})();
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-doesnt-iterate-all-cells.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-doesnt-iterate-all-holdings.js
similarity index 58%
rename from implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-doesnt-iterate-all-cells.js
rename to implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-doesnt-iterate-all-holdings.js
index f8e44c355c..20726284bb 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-doesnt-iterate-all-cells.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-doesnt-iterate-all-holdings.js
@@ -7,48 +7,47 @@
 let cleanup_call_count = 0;
 let cleanup = function(iter) {
   if (cleanup_call_count == 0) {
-    // First call: iterate 2 of the 3 cells
-    let cells = [];
-    for (wc of iter) {
-      cells.push(wc);
-      // Don't iterate the rest of the cells
-      if (cells.length == 2) {
+    // First call: iterate 2 of the 3 holdings
+    let holdings_list = [];
+    for (holdings of iter) {
+      holdings_list.push(holdings);
+      // Don't iterate the rest of the holdings
+      if (holdings_list.length == 2) {
         break;
       }
     }
-    assertEquals(cells.length, 2);
-    assertTrue(cells[0].holdings < 3);
-    assertTrue(cells[1].holdings < 3);
+    assertEquals(holdings_list.length, 2);
+    assertTrue(holdings_list[0] < 3);
+    assertTrue(holdings_list[1] < 3);
     // Update call count only after the asserts; this ensures that the test
     // fails even if the exceptions inside the cleanup function are swallowed.
     cleanup_call_count++;
   } else {
-    // Second call: iterate one leftover cell and one new cell.
+    // Second call: iterate one leftover holdings and one holdings.
     assertEquals(1, cleanup_call_count);
-    let cells = [];
-    for (wc of iter) {
-      cells.push(wc);
+    let holdings_list = [];
+    for (holdings of iter) {
+      holdings_list.push(holdings);
     }
-    assertEquals(cells.length, 2);
-    assertTrue((cells[0].holdings < 3 && cells[1].holdings == 100) ||
-               (cells[1].holdings < 3 && cells[0].holdings == 100));
+    assertEquals(holdings_list.length, 2);
+    assertTrue((holdings_list[0] < 3 && holdings_list[1] == 100) ||
+               (holdings_list[1] < 3 && holdings_list[0] == 100));
     // Update call count only after the asserts; this ensures that the test
     // fails even if the exceptions inside the cleanup function are swallowed.
     cleanup_call_count++;
   }
 }
 
-let wf = new WeakFactory(cleanup);
-// Create 3 objects and WeakCells pointing to them. The objects need to be
-// inside a closure so that we can reliably kill them!
-let weak_cells = [];
+let fg = new FinalizationGroup(cleanup);
+// Create 3 objects and register them in the FinalizationGroup. The objects need
+// to be inside a closure so that we can reliably kill them!
 
 (function() {
   let objects = [];
 
   for (let i = 0; i < 3; ++i) {
     objects[i] = {a: i};
-    weak_cells[i] = wf.makeCell(objects[i], i);
+    fg.register(objects[i], i);
   }
 
   gc();
@@ -58,14 +57,14 @@ let weak_cells = [];
   objects = [];
 })();
 
-// This GC will discover dirty WeakCells.
+// This GC will reclaim the targets.
 gc();
 assertEquals(0, cleanup_call_count);
 
 let timeout_func_1 = function() {
   assertEquals(1, cleanup_call_count);
 
-  // Assert that the cleanup function won't be called unless new WeakCells appear.
+  // Assert that the cleanup function won't be called unless new targets appear.
   setTimeout(timeout_func_2, 0);
 }
 
@@ -74,9 +73,9 @@ setTimeout(timeout_func_1, 0);
 let timeout_func_2 = function() {
   assertEquals(1, cleanup_call_count);
 
-  // Create a new WeakCells to be cleaned up.
+  // Create a new object and register it.
   let obj = {};
-  let wc = wf.makeCell(obj, 100);
+  let wc = fg.register(obj, 100);
   obj = null;
 
   gc();
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-from-different-realm.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-from-different-realm.js
index 02f05ac8e2..97ab1dbd80 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-from-different-realm.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-from-different-realm.js
@@ -9,15 +9,15 @@ let r = Realm.create();
 let cleanup = Realm.eval(r, "var stored_global; function cleanup() { stored_global = globalThis; } cleanup");
 let realm_global_this = Realm.eval(r, "globalThis");
 
-let wf = new WeakFactory(cleanup);
+let fg = new FinalizationGroup(cleanup);
 
-// Create an object and a WeakCell pointing to it. The object needs to be inside
-// a closure so that we can reliably kill them!
+// Create an object and a register it in the FinalizationGroup. The object needs
+// to be inside a closure so that we can reliably kill them!
 let weak_cell;
 
 (function() {
   let object = {};
-  weak_cell = wf.makeCell(object);
+  fg.register(object, {});
 
   // object goes out of scope.
 })();
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-is-a-microtask.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-is-a-microtask.js
index 6a5bcfa821..c6b834e8fb 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-is-a-microtask.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-is-a-microtask.js
@@ -19,17 +19,17 @@ let log = [];
 
 let cleanup = (iter) => {
   log.push("cleanup");
-  for (wc of iter) { }
+  for (holdings of iter) { }
 }
 
-let wf = new WeakFactory(cleanup);
+let fg = new FinalizationGroup(cleanup);
 let o = null;
 
 (function() {
   // Use a closure here to avoid other references to o which might keep it alive
   // (e.g., stack frames pointing to it).
   o = {};
-  wf.makeCell(o);
+  fg.register(o, {});
 })();
 
 let microtask_after_cleanup = () => {
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-proxy-from-different-realm.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-proxy-from-different-realm.js
index 2e46830093..1d275a19aa 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-proxy-from-different-realm.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanup-proxy-from-different-realm.js
@@ -9,15 +9,15 @@ let r = Realm.create();
 let cleanup = Realm.eval(r, "var stored_global; let cleanup = new Proxy(function() { stored_global = globalThis;}, {}); cleanup");
 let realm_global_this = Realm.eval(r, "globalThis");
 
-let wf = new WeakFactory(cleanup);
+let fg = new FinalizationGroup(cleanup);
 
-// Create an object and a WeakCell pointing to it. The object needs to be inside
-// a closure so that we can reliably kill them!
+// Create an object and register it in the FinalizationGroup. The object needs
+// to be inside a closure so that we can reliably kill them!
 let weak_cell;
 
 (function() {
   let object = {};
-  weak_cell = wf.makeCell(object);
+  fg.register(object, "holdings");
 
   // object goes out of scope.
 })();
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanupsome-cleared-weakcell.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanupsome-after-unregister.js
similarity index 53%
rename from implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanupsome-cleared-weakcell.js
rename to implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanupsome-after-unregister.js
index 631f43c012..0cef0a1af5 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanupsome-cleared-weakcell.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanupsome-after-unregister.js
@@ -5,31 +5,31 @@
 // Flags: --harmony-weak-refs --expose-gc --noincremental-marking
 
 let cleanup_count = 0;
-let cleanup_cells = [];
+let cleanup_holdings = [];
 let cleanup = function(iter) {
-  for (wc of iter) {
-    cleanup_cells.push(wc);
+  for (holdings of iter) {
+    cleanup_holdings.push(holdings);
   }
   ++cleanup_count;
 }
 
-let wf = new WeakFactory(cleanup);
-let weak_cell;
+let fg = new FinalizationGroup(cleanup);
+let key = {"k": "this is the key"};
 (function() {
   let o = {};
-  weak_cell = wf.makeCell(o);
+  weak_cell = fg.register(o, "holdings", key);
 
-  // cleanupSome won't do anything since there are no dirty WeakCells.
-  wf.cleanupSome();
+  // cleanupSome won't do anything since there are no reclaimed targets.
+  fg.cleanupSome();
   assertEquals(0, cleanup_count);
 })();
 
 // GC will detect the WeakCell as dirty.
 gc();
 
-// Clear the WeakCell just before we would've called cleanupSome.
-weak_cell.clear();
+// Unregister the tracked object just before calling cleanupSome.
+fg.unregister(key);
 
-wf.cleanupSome();
+fg.cleanupSome();
 
 assertEquals(0, cleanup_count);
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanupsome-weakcell.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanupsome.js
similarity index 52%
rename from implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanupsome-weakcell.js
rename to implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanupsome.js
index 84a946d390..1d3ceda3f2 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanupsome-weakcell.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/cleanupsome.js
@@ -5,29 +5,28 @@
 // Flags: --harmony-weak-refs --expose-gc --noincremental-marking
 
 let cleanup_count = 0;
-let cleanup_cells = [];
+let cleanup_holdings = [];
 let cleanup = function(iter) {
-  for (wc of iter) {
-    cleanup_cells.push(wc);
+  for (holdings of iter) {
+    cleanup_holdings.push(holdings);
   }
   ++cleanup_count;
 }
 
-let wf = new WeakFactory(cleanup);
-let weak_cell;
+let fg = new FinalizationGroup(cleanup);
 (function() {
   let o = {};
-  weak_cell = wf.makeCell(o);
+  fg.register(o, "holdings");
 
-  // cleanupSome won't do anything since there are no dirty WeakCells.
-  wf.cleanupSome();
+  // cleanupSome won't do anything since there are no reclaimed targets.
+  fg.cleanupSome();
   assertEquals(0, cleanup_count);
 })();
 
-// GC will detect the WeakCell as dirty.
+// GC will detect o as dead.
 gc();
 
-wf.cleanupSome();
+fg.cleanupSome();
 assertEquals(1, cleanup_count);
-assertEquals(1, cleanup_cells.length);
-assertEquals(weak_cell, cleanup_cells[0]);
+assertEquals(1, cleanup_holdings.length);
+assertEquals("holdings", cleanup_holdings[0]);
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-called-twice.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-called-twice.js
deleted file mode 100644
index a5aa537ff2..0000000000
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-called-twice.js
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright 2018 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --harmony-weak-refs --expose-gc --noincremental-marking
-
-let cleanup_call_count = 0;
-let cleanup = function(iter) {
-  ++cleanup_call_count;
-}
-
-let wf = new WeakFactory(cleanup);
-// Create an object and a WeakCell pointing to it. The object needs to be inside
-// a closure so that we can reliably kill them!
-let weak_cell;
-
-(function() {
-  let object = {};
-  weak_cell = wf.makeCell(object);
-
-  // Clear the WeakCell before the GC has a chance to discover it.
-  weak_cell.clear();
-
-  // Call clear again (just to assert we handle this gracefully).
-  weak_cell.clear();
-
-  // object goes out of scope.
-})();
-
-// This GC will discover dirty WeakCells.
-gc();
-assertEquals(0, cleanup_call_count);
-
-// Assert that the cleanup function won't be called, since the WeakCell was cleared.
-let timeout_func = function() {
-  assertEquals(0, cleanup_call_count);
-}
-
-setTimeout(timeout_func, 0);
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-clears-factory-pointer.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-clears-factory-pointer.js
deleted file mode 100644
index 98410d5d0e..0000000000
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-clears-factory-pointer.js
+++ /dev/null
@@ -1,49 +0,0 @@
-// Copyright 2018 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --harmony-weak-refs --expose-gc --noincremental-marking
-
-// Test that WeakCell.prototype.clear() also clears the WeakFactory pointer of
-// WeakCell. The only way to observe this is to assert that the WeakCell no
-// longer keeps its WeakFactory alive after clear() has been called.
-
-let weak_cell;
-let weak_cell_pointing_to_factory;
-
-let cleanup1_call_count = 0;
-let cleanup2_call_count = 0;
-
-let cleanup1 = function() {
-  ++cleanup1_call_count;
-}
-
-let cleanup2 = function() {
-  ++cleanup2_call_count;
-}
-
-let wf1 = new WeakFactory(cleanup1);
-
-(function(){
-  let wf2 = new WeakFactory(cleanup2);
-
-  (function() {
-    let object = {};
-    weak_cell = wf2.makeCell(object);
-    // object goes out of scope.
-  })();
-
-  weak_cell_pointing_to_factory = wf1.makeCell(wf2);
-  // wf goes out of scope
-})();
-
-weak_cell.clear();
-gc();
-
-// Assert that weak_cell_pointing_to_factory now got cleared.
-let timeout_func = function() {
-  assertEquals(1, cleanup1_call_count);
-  assertEquals(0, cleanup2_call_count);
-}
-
-setTimeout(timeout_func, 0);
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-inside-cleanup4.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-inside-cleanup4.js
deleted file mode 100644
index 794f356119..0000000000
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-inside-cleanup4.js
+++ /dev/null
@@ -1,48 +0,0 @@
-// Copyright 2018 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --harmony-weak-refs --expose-gc --noincremental-marking
-
-let cleanup_call_count = 0;
-let cleanup_weak_cell_count = 0;
-let cleanup = function(iter) {
-  for (wc of iter) {
-    // See which WeakCell we're iterating over and clear the other one.
-    if (wc == weak_cell1) {
-      weak_cell2.clear();
-    } else {
-      assertSame(wc, weak_cell2);
-      weak_cell1.clear();
-    }
-    ++cleanup_weak_cell_count;
-  }
-  ++cleanup_call_count;
-}
-
-let wf = new WeakFactory(cleanup);
-// Create an object and a WeakCell pointing to it. The object needs to be inside
-// a closure so that we can reliably kill them!
-let weak_cell1;
-let weak_cell2;
-
-(function() {
-  let object1 = {};
-  weak_cell1 = wf.makeCell(object1);
-  let object2 = {};
-  weak_cell2 = wf.makeCell(object2);
-
-  // object1 and object2 go out of scope.
-})();
-
-// This GC will discover dirty WeakCells and schedule cleanup.
-gc();
-assertEquals(0, cleanup_call_count);
-
-// Assert that the cleanup function was called and iterated one WeakCell (but not the other one).
-let timeout_func = function() {
-  assertEquals(1, cleanup_call_count);
-  assertEquals(1, cleanup_weak_cell_count);
-}
-
-setTimeout(timeout_func, 0);
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/weak-factory-keeps-weak-cells-alive.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/finalization-group-keeps-holdings-alive.js
similarity index 55%
rename from implementation-contributed/v8/mjsunit/harmony/weakrefs/weak-factory-keeps-weak-cells-alive.js
rename to implementation-contributed/v8/mjsunit/harmony/weakrefs/finalization-group-keeps-holdings-alive.js
index 367cd9a9c0..ea35a2e63f 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/weak-factory-keeps-weak-cells-alive.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/finalization-group-keeps-holdings-alive.js
@@ -7,18 +7,19 @@
 let cleanup_called = false;
 let cleanup = function(iter) {
   assertFalse(cleanup_called);
-  let cells = [];
-  for (wc of iter) {
-    cells.push(wc);
+  let holdings_list = [];
+  for (holdings of iter) {
+    holdings_list.push(holdings);
   }
-  assertEquals(cells.length, 1);
-  assertEquals(cells[0].holdings, "this is my cell");
+  assertEquals(holdings_list.length, 1);
+  assertEquals(holdings_list[0].a, "this is the holdings object");
   cleanup_called = true;
 }
 
-let wf = new WeakFactory(cleanup);
+let fg = new FinalizationGroup(cleanup);
 let o1 = {};
-let wc1 = wf.makeCell(o1, "this is my cell");
+let holdings = {'a': 'this is the holdings object'};
+fg.register(o1, holdings);
 
 gc();
 assertFalse(cleanup_called);
@@ -26,9 +27,9 @@ assertFalse(cleanup_called);
 // Drop the last references to o1.
 o1 = null;
 
-// Drop the last reference to the WeakCell. The WeakFactory keeps it alive, so
-// the cleanup function will be called as normal.
-wc1 = null;
+// Drop the last reference to the holdings. The FinalizationGroup keeps it
+// alive, so the cleanup function will be called as normal.
+holdings = null;
 gc();
 assertFalse(cleanup_called);
 
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/weakcell-and-weakref.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/finalizationgroup-and-weakref.js
similarity index 68%
rename from implementation-contributed/v8/mjsunit/harmony/weakrefs/weakcell-and-weakref.js
rename to implementation-contributed/v8/mjsunit/harmony/weakrefs/finalizationgroup-and-weakref.js
index f6627be19e..bd66f1ce1d 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/weakcell-and-weakref.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/finalizationgroup-and-weakref.js
@@ -7,27 +7,26 @@
 let cleanup_called = false;
 let cleanup = function(iter) {
   assertFalse(cleanup_called);
-  let cells = [];
-  for (wc of iter) {
-    cells.push(wc);
+  let holdings_list = [];
+  for (holdings of iter) {
+    holdings_list.push(holdings);
   }
-  assertEquals(1, cells.length);
-  assertEquals(weak_cell, cells[0]);
+  assertEquals(1, holdings_list.length);
+  assertEquals("holdings", holdings_list[0]);
   cleanup_called = true;
 }
 
-let wf = new WeakFactory(cleanup);
+let fg = new FinalizationGroup(cleanup);
 let weak_ref;
-let weak_cell;
 (function() {
   let o = {};
   weak_ref = new WeakRef(o);
-  weak_cell = wf.makeCell(o);
+  fg.register(o, "holdings");
 })();
 
 // Since the WeakRef was created during this turn, it is not cleared by GC. The
-// WeakCell is not cleared either, since the WeakRef keeps the target object
-// alive.
+// pointer inside the FinalizationGroup is not cleared either, since the WeakRef
+// keeps the target object alive.
 gc();
 (function() {
   assertNotEquals(undefined, weak_ref.deref());
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/factory-scheduled-for-cleanup-multiple-times.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/finalizationgroup-scheduled-for-cleanup-multiple-times.js
similarity index 55%
rename from implementation-contributed/v8/mjsunit/harmony/weakrefs/factory-scheduled-for-cleanup-multiple-times.js
rename to implementation-contributed/v8/mjsunit/harmony/weakrefs/finalizationgroup-scheduled-for-cleanup-multiple-times.js
index 2f3915478e..a1cff3aaa0 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/factory-scheduled-for-cleanup-multiple-times.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/finalizationgroup-scheduled-for-cleanup-multiple-times.js
@@ -6,66 +6,66 @@
 // Flags: --no-stress-flush-bytecode
 
 let cleanup0_call_count = 0;
-let cleanup0_weak_cell_count = 0;
+let cleanup0_holdings_count = 0;
 
 let cleanup1_call_count = 0;
-let cleanup1_weak_cell_count = 0;
+let cleanup1_holdings_count = 0;
 
 let cleanup0 = function(iter) {
-  for (wc of iter) {
-    ++cleanup0_weak_cell_count;
+  for (holdings of iter) {
+    ++cleanup0_holdings_count;
   }
   ++cleanup0_call_count;
 }
 
 let cleanup1 = function(iter) {
-  for (wc of iter) {
-    ++cleanup1_weak_cell_count;
+  for (holdings of iter) {
+    ++cleanup1_holdings_count;
   }
   ++cleanup1_call_count;
 }
 
-let wf0 = new WeakFactory(cleanup0);
-let wf1 = new WeakFactory(cleanup1);
+let fg0 = new FinalizationGroup(cleanup0);
+let fg1 = new FinalizationGroup(cleanup1);
 
-// Create 1 WeakCell for each WeakFactory and kill the objects they point to.
+// Register 1 weak reference for each FinalizationGroup and kill the objects they point to.
 (function() {
   // The objects need to be inside a closure so that we can reliably kill them.
   let objects = [];
   objects[0] = {};
   objects[1] = {};
 
-  wf0.makeCell(objects[0]);
-  wf1.makeCell(objects[1]);
+  fg0.register(objects[0], "holdings0-0");
+  fg1.register(objects[1], "holdings1-0");
 
   // Drop the references to the objects.
   objects = [];
 
-  // Will schedule both wf0 and wf1 for cleanup.
+  // Will schedule both fg0 and fg1 for cleanup.
   gc();
 })();
 
 // Before the cleanup task has a chance to run, do the same thing again, so both
-// factories are (again) scheduled for cleanup. This has to be a IIFE function
+// FinalizationGroups are (again) scheduled for cleanup. This has to be a IIFE function
 // (so that we can reliably kill the objects) so we cannot use the same function
 // as before.
 (function() {
   let objects = [];
   objects[0] = {};
   objects[1] = {};
-  wf0.makeCell(objects[0]);
-  wf1.makeCell(objects[1]);
+  fg0.register(objects[0], "holdings0-1");
+  fg1.register(objects[1], "holdings1-1");
   objects = [];
   gc();
 })();
 
 let timeout_func = function() {
   assertEquals(1, cleanup0_call_count);
-  assertEquals(2, cleanup0_weak_cell_count);
+  assertEquals(2, cleanup0_holdings_count);
   assertEquals(1, cleanup1_call_count);
-  assertEquals(2, cleanup1_weak_cell_count);
+  assertEquals(2, cleanup1_holdings_count);
 }
 
-// Give the cleanup task a chance to run. All WeakCells to cleanup will be
-// available during the same invocation of the cleanup function.
+// Give the cleanup task a chance to run. All holdings will be iterated during
+// the same invocation of the cleanup function.
 setTimeout(timeout_func, 0);
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/iterating-weak-cells.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/iterating-in-cleanup.js
similarity index 51%
rename from implementation-contributed/v8/mjsunit/harmony/weakrefs/iterating-weak-cells.js
rename to implementation-contributed/v8/mjsunit/harmony/weakrefs/iterating-in-cleanup.js
index 9fef051122..73aac76378 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/iterating-weak-cells.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/iterating-in-cleanup.js
@@ -7,29 +7,25 @@
 let cleanup_called = false;
 let cleanup = function(iter) {
   assertFalse(cleanup_called);
-  let cells = [];
-  for (wc of iter) {
-    cells.push(wc);
+  let holdings_list = [];
+  for (holdings of iter) {
+    holdings_list.push(holdings);
   }
-  assertEquals(cells.length, 2);
-  if (cells[0] == wc1) {
-    assertEquals(cells[0].holdings, 1);
-    assertEquals(cells[1], wc2);
-    assertEquals(cells[1].holdings, 2);
+  assertEquals(holdings_list.length, 2);
+  if (holdings_list[0] == 1) {
+    assertEquals(holdings_list[1], 2);
   } else {
-    assertEquals(cells[0], wc2);
-    assertEquals(cells[0].holdings, 2);
-    assertEquals(cells[1], wc1);
-    assertEquals(cells[1].holdings, 1);
+    assertEquals(holdings_list[0], 2);
+    assertEquals(holdings_list[1], 1);
   }
   cleanup_called = true;
 }
 
-let wf = new WeakFactory(cleanup);
+let fg = new FinalizationGroup(cleanup);
 let o1 = {};
 let o2 = {};
-let wc1 = wf.makeCell(o1, 1);
-let wc2 = wf.makeCell(o2, 2);
+fg.register(o1, 1);
+fg.register(o2, 2);
 
 gc();
 assertFalse(cleanup_called);
@@ -37,8 +33,8 @@ assertFalse(cleanup_called);
 // Drop the last references to o1 and o2.
 o1 = null;
 o2 = null;
-// GC will clear the WeakCells; the cleanup function will be called the next time
-// we enter the event loop.
+// GC will reclaim the target objects; the cleanup function will be called the
+// next time we enter the event loop.
 gc();
 assertFalse(cleanup_called);
 
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/multiple-dirty-weak-factories.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/multiple-dirty-finalization-groups.js
similarity index 60%
rename from implementation-contributed/v8/mjsunit/harmony/weakrefs/multiple-dirty-weak-factories.js
rename to implementation-contributed/v8/mjsunit/harmony/weakrefs/multiple-dirty-finalization-groups.js
index 98a33df240..51e721401a 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/multiple-dirty-weak-factories.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/multiple-dirty-finalization-groups.js
@@ -5,28 +5,26 @@
 // Flags: --harmony-weak-refs --expose-gc --noincremental-marking
 
 let cleanup_call_count = 0;
-let cleanup_weak_cell_count = 0;
+let cleanup_holdings_count = 0;
 let cleanup = function(iter) {
-  for (wc of iter) {
-    ++cleanup_weak_cell_count;
+  for (holdings of iter) {
+    ++cleanup_holdings_count;
   }
   ++cleanup_call_count;
 }
 
-let wf1 = new WeakFactory(cleanup);
-let wf2 = new WeakFactory(cleanup);
+let fg1 = new FinalizationGroup(cleanup);
+let fg2 = new FinalizationGroup(cleanup);
 
-// Create two objects and WeakCells pointing to them. The objects need to be inside
-// a closure so that we can reliably kill them!
-let weak_cell1;
-let weak_cell2;
+// Create two objects and register them in FinalizationGroups. The objects need
+// to be inside a closure so that we can reliably kill them!
 
 (function() {
   let object1 = {};
-  weak_cell1 = wf1.makeCell(object1);
+  fg1.register(object1, "holdings1");
 
   let object2 = {};
-  weak_cell2 = wf2.makeCell(object2);
+  fg2.register(object2, "holdings2");
 
   // object1 and object2 go out of scope.
 })();
@@ -35,10 +33,10 @@ let weak_cell2;
 gc();
 assertEquals(0, cleanup_call_count);
 
-// Assert that the cleanup function was called and iterated the WeakCells.
+// Assert that the cleanup function was called and iterated the holdings.
 let timeout_func = function() {
   assertEquals(2, cleanup_call_count);
-  assertEquals(2, cleanup_weak_cell_count);
+  assertEquals(2, cleanup_holdings_count);
 }
 
 setTimeout(timeout_func, 0);
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/undefined-holdings.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/undefined-holdings.js
new file mode 100644
index 0000000000..ac3dc6041a
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/undefined-holdings.js
@@ -0,0 +1,39 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-weak-refs --expose-gc --noincremental-marking
+
+let cleanup_call_count = 0;
+let cleanup_holdings_count = 0;
+let cleanup = function(iter) {
+  for (holdings of iter) {
+    assertEquals(holdings, undefined);
+    ++cleanup_holdings_count;
+  }
+  ++cleanup_call_count;
+}
+
+let fg = new FinalizationGroup(cleanup);
+
+// Create an object and register it in the FinalizationGroup. The object needs to be inside
+// a closure so that we can reliably kill them!
+
+(function() {
+  let object = {};
+  fg.register(object);
+
+  // object goes out of scope.
+})();
+
+// This GC will reclaim the target object and schedule cleanup.
+gc();
+assertEquals(0, cleanup_call_count);
+
+// Assert that the cleanup function was called and iterated the holdings.
+let timeout_func = function() {
+  assertEquals(1, cleanup_call_count);
+  assertEquals(1, cleanup_holdings_count);
+}
+
+setTimeout(timeout_func, 0);
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-after-cleanup.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-after-cleanup.js
similarity index 52%
rename from implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-after-cleanup.js
rename to implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-after-cleanup.js
index 3392d7fbb9..f6480f86b6 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-after-cleanup.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-after-cleanup.js
@@ -5,42 +5,42 @@
 // Flags: --harmony-weak-refs --expose-gc --noincremental-marking
 
 let cleanup_call_count = 0;
-let cleanup_weak_cell_count = 0;
+let cleanup_holdings_count = 0;
 let cleanup = function(iter) {
-  for (wc of iter) {
-    assertSame(wc, weak_cell);
-    ++cleanup_weak_cell_count;
+  for (holdings of iter) {
+    assertEquals("holdings", holdings);
+    ++cleanup_holdings_count;
   }
   ++cleanup_call_count;
 }
 
-let wf = new WeakFactory(cleanup);
-// Create an object and a WeakCell pointing to it. The object needs to be inside
-// a closure so that we can reliably kill them!
-let weak_cell;
+let fg = new FinalizationGroup(cleanup);
+let key = {"k": "this is the key"};
+// Create an object and register it in the FinalizationGroup. The object needs
+// to be inside a closure so that we can reliably kill them!
 
 (function() {
   let object = {};
-  weak_cell = wf.makeCell(object);
+  fg.register(object, "holdings", key);
 
   // object goes out of scope.
 })();
 
-// This GC will discover dirty WeakCells and schedule cleanup.
+// This GC will reclaim the target object and schedule cleanup.
 gc();
 assertEquals(0, cleanup_call_count);
 
-// Assert that the cleanup function was called and iterated the WeakCell.
+// Assert that the cleanup function was called and iterated the holdings.
 let timeout_func = function() {
   assertEquals(1, cleanup_call_count);
-  assertEquals(1, cleanup_weak_cell_count);
+  assertEquals(1, cleanup_holdings_count);
 
-  // Clear an already iterated over WeakCell.
-  weak_cell.clear();
+  // Unregister an already iterated over weak reference.
+  fg.unregister(key);
 
   // Assert that it didn't do anything.
   setTimeout(() => { assertEquals(1, cleanup_call_count); }, 0);
-  setTimeout(() => { assertEquals(1, cleanup_weak_cell_count); }, 0);
+  setTimeout(() => { assertEquals(1, cleanup_holdings_count); }, 0);
 }
 
 setTimeout(timeout_func, 0);
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-before-cleanup.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-before-cleanup.js
similarity index 58%
rename from implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-before-cleanup.js
rename to implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-before-cleanup.js
index 1fd0fbf3b0..10b8bc67ff 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-before-cleanup.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-before-cleanup.js
@@ -9,30 +9,27 @@ let cleanup = function(iter) {
   ++cleanup_call_count;
 }
 
-let wf = new WeakFactory(cleanup);
-// Create an object and a WeakCell pointing to it. The object needs to be inside
-// a closure so that we can reliably kill them!
-let weak_cell;
+let fg = new FinalizationGroup(cleanup);
+let key = {"k": "this is the key"};
+// Create an object and register it in the FinalizationGroup. The object needs
+// to be inside a closure so that we can reliably kill them!
 
 (function() {
   let object = {};
-  weak_cell = wf.makeCell(object, "my holdings");
+  fg.register(object, "my holdings", key);
 
   // Clear the WeakCell before the GC has a chance to discover it.
-  let return_value = weak_cell.clear();
+  let return_value = fg.unregister(key);
   assertEquals(undefined, return_value);
 
-  // Assert holdings got cleared too.
-  assertEquals(undefined, weak_cell.holdings);
-
   // object goes out of scope.
 })();
 
-// This GC will discover dirty WeakCells.
+// This GC will reclaim the target object.
 gc();
 assertEquals(0, cleanup_call_count);
 
-// Assert that the cleanup function won't be called, since the WeakCell was cleared.
+// Assert that the cleanup function won't be called, since we called unregister.
 let timeout_func = function() {
   assertEquals(0, cleanup_call_count);
 }
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-called-twice.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-called-twice.js
new file mode 100644
index 0000000000..e6ea150027
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-called-twice.js
@@ -0,0 +1,40 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-weak-refs --expose-gc --noincremental-marking
+
+let cleanup_call_count = 0;
+let cleanup = function(iter) {
+  ++cleanup_call_count;
+}
+
+let fg = new FinalizationGroup(cleanup);
+let key = {"k": "this is the key"};
+// Create an object and register it in the FinalizationGroup. The object needs
+// to be inside a closure so that we can reliably kill them!
+
+(function() {
+  let object = {};
+  fg.register(object, "holdings", key);
+
+  // Unregister before the GC has a chance to discover the object.
+  fg.unregister(key);
+
+  // Call unregister again (just to assert we handle this gracefully).
+  fg.unregister(key);
+
+  // object goes out of scope.
+})();
+
+// This GC will reclaim the target object.
+gc();
+assertEquals(0, cleanup_call_count);
+
+// Assert that the cleanup function won't be called, since the weak reference
+// was unregistered.
+let timeout_func = function() {
+  assertEquals(0, cleanup_call_count);
+}
+
+setTimeout(timeout_func, 0);
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-inside-cleanup1.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-inside-cleanup1.js
similarity index 54%
rename from implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-inside-cleanup1.js
rename to implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-inside-cleanup1.js
index 6c06d7af74..aa9eab20ff 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-inside-cleanup1.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-inside-cleanup1.js
@@ -5,37 +5,37 @@
 // Flags: --harmony-weak-refs --expose-gc --noincremental-marking
 
 let cleanup_call_count = 0;
-let cleanup_weak_cell_count = 0;
+let cleanup_holdings_count = 0;
 let cleanup = function(iter) {
-  // Clear the WeakCell before we've iterated through it.
-  weak_cell.clear();
+  // Unregister before we've iterated through the holdings.
+  fg.unregister(key);
 
   for (wc of iter) {
-    ++cleanup_weak_cell_count;
+    ++cleanup_holdings_count;
   }
   ++cleanup_call_count;
 }
 
-let wf = new WeakFactory(cleanup);
-// Create an object and a WeakCell pointing to it. The object needs to be inside
-// a closure so that we can reliably kill them!
-let weak_cell;
+let fg = new FinalizationGroup(cleanup);
+let key = {"k": "the key"};
+// Create an object and register it in the FinalizationGroup. The object needs
+// to be inside a closure so that we can reliably kill them!
 
 (function() {
   let object = {};
-  weak_cell = wf.makeCell(object);
+  fg.register(object, "holdings", key);
 
   // object goes out of scope.
 })();
 
-// This GC will discover dirty WeakCells and schedule cleanup.
+// This GC will discover unretained targets and schedule cleanup.
 gc();
 assertEquals(0, cleanup_call_count);
 
-// Assert that the cleanup function was called, but didn't iterate any weak cells.
+// Assert that the cleanup function was called, but didn't iterate any holdings.
 let timeout_func = function() {
   assertEquals(1, cleanup_call_count);
-  assertEquals(0, cleanup_weak_cell_count);
+  assertEquals(0, cleanup_holdings_count);
 }
 
 setTimeout(timeout_func, 0);
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-inside-cleanup2.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-inside-cleanup2.js
similarity index 64%
rename from implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-inside-cleanup2.js
rename to implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-inside-cleanup2.js
index 0aab366f97..84ec3aaef8 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-inside-cleanup2.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-inside-cleanup2.js
@@ -5,24 +5,24 @@
 // Flags: --harmony-weak-refs --expose-gc --noincremental-marking
 
 let cleanup_call_count = 0;
-let cleanup_weak_cell_count = 0;
+let cleanup_holdings_count = 0;
 let cleanup = function(iter) {
-  for (wc of iter) {
-    assertSame(wc, weak_cell);
-    wc.clear();
-    ++cleanup_weak_cell_count;
+  for (holdings of iter) {
+    assertEquals(holdings, "holdings");
+    fg.unregister(key);
+    ++cleanup_holdings_count;
   }
   ++cleanup_call_count;
 }
 
-let wf = new WeakFactory(cleanup);
-// Create an object and a WeakCell pointing to it. The object needs to be inside
+let fg = new FinalizationGroup(cleanup);
+// Create an object and register it in the FinalizationGroup. The object needs to be inside
 // a closure so that we can reliably kill them!
-let weak_cell;
+let key = {"k": "this is the key"};
 
 (function() {
   let object = {};
-  weak_cell = wf.makeCell(object);
+  fg.register(object, "holdings", key);
 
   // object goes out of scope.
 })();
@@ -34,7 +34,7 @@ assertEquals(0, cleanup_call_count);
 // Assert that the cleanup function was called and iterated the WeakCell.
 let timeout_func = function() {
   assertEquals(1, cleanup_call_count);
-  assertEquals(1, cleanup_weak_cell_count);
+  assertEquals(1, cleanup_holdings_count);
 }
 
 setTimeout(timeout_func, 0);
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-inside-cleanup3.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-inside-cleanup3.js
similarity index 55%
rename from implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-inside-cleanup3.js
rename to implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-inside-cleanup3.js
index 9dcea5ded5..39706a7b9b 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-inside-cleanup3.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-inside-cleanup3.js
@@ -5,37 +5,38 @@
 // Flags: --harmony-weak-refs --expose-gc --noincremental-marking
 
 let cleanup_call_count = 0;
-let cleanup_weak_cell_count = 0;
+let cleanup_holdings_count = 0;
 let cleanup = function(iter) {
-  for (wc of iter) {
-    assertSame(wc, weak_cell);
-    ++cleanup_weak_cell_count;
+  for (holdings of iter) {
+    assertEquals(holdings, "holdings");
+    ++cleanup_holdings_count;
   }
-  // Clear an already iterated over WeakCell.
-  weak_cell.clear();
+  // Unregister an already iterated over weak reference.
+  fg.unregister(key);
   ++cleanup_call_count;
 }
 
-let wf = new WeakFactory(cleanup);
-// Create an object and a WeakCell pointing to it. The object needs to be inside
+let fg = new FinalizationGroup(cleanup);
+let key = {"k": "this is the key"};
+
+// Create an object and register it in the FinalizationGroup. The object needs to be inside
 // a closure so that we can reliably kill them!
-let weak_cell;
 
 (function() {
   let object = {};
-  weak_cell = wf.makeCell(object);
+  fg.register(object, "holdings", key);
 
   // object goes out of scope.
 })();
 
-// This GC will discover dirty WeakCells and schedule cleanup.
+// This GC will reclaim the target object and schedule cleanup.
 gc();
 assertEquals(0, cleanup_call_count);
 
-// Assert that the cleanup function was called and iterated the WeakCell.
+// Assert that the cleanup function was called and iterated the holdings.
 let timeout_func = function() {
   assertEquals(1, cleanup_call_count);
-  assertEquals(1, cleanup_weak_cell_count);
+  assertEquals(1, cleanup_holdings_count);
 }
 
 setTimeout(timeout_func, 0);
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-inside-cleanup4.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-inside-cleanup4.js
new file mode 100644
index 0000000000..67ed227502
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-inside-cleanup4.js
@@ -0,0 +1,48 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-weak-refs --expose-gc --noincremental-marking
+
+let cleanup_call_count = 0;
+let cleanup_holdings_count = 0;
+let cleanup = function(iter) {
+  for (holdings of iter) {
+    // See which target we're iterating over and unregister the other one.
+    if (holdings == 1) {
+      fg.unregister(key2);
+    } else {
+      assertSame(holdings, 2);
+      fg.unregister(key1);
+    }
+    ++cleanup_holdings_count;
+  }
+  ++cleanup_call_count;
+}
+
+let fg = new FinalizationGroup(cleanup);
+let key1 = {"k": "first key"};
+let key2 = {"k": "second key"};
+// Create two objects and register them in the FinalizationGroup. The objects
+// need to be inside a closure so that we can reliably kill them!
+
+(function() {
+  let object1 = {};
+  fg.register(object1, 1, key1);
+  let object2 = {};
+  fg.register(object2, 2, key2);
+
+  // object1 and object2 go out of scope.
+})();
+
+// This GC will reclaim target objects and schedule cleanup.
+gc();
+assertEquals(0, cleanup_call_count);
+
+// Assert that the cleanup function was called and iterated one holdings (but not the other one).
+let timeout_func = function() {
+  assertEquals(1, cleanup_call_count);
+  assertEquals(1, cleanup_holdings_count);
+}
+
+setTimeout(timeout_func, 0);
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-many.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-many.js
new file mode 100644
index 0000000000..748b7065c6
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-many.js
@@ -0,0 +1,50 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-weak-refs --expose-gc --noincremental-marking
+
+let cleanup_call_count = 0;
+let cleanup_holdings_count = 0;
+let cleanup = function(iter) {
+  for (holdings of iter) {
+    assertEquals("holdings2", holdings);
+    ++cleanup_holdings_count;
+  }
+  ++cleanup_call_count;
+}
+
+let fg = new FinalizationGroup(cleanup);
+let key1 = {"k": "key1"};
+let key2 = {"k": "key2"};
+// Create three objects and register them in the FinalizationGroup. The objects
+// need to be inside a closure so that we can reliably kill them!
+
+(function() {
+  let object1a = {};
+  fg.register(object1a, "holdings1a", key1);
+
+  let object1b = {};
+  fg.register(object1b, "holdings1b", key1);
+
+  let object2 = {};
+  fg.register(object2, "holdings2", key2);
+
+  // Unregister before the GC has a chance to discover the objects.
+  fg.unregister(key1);
+
+  // objects go out of scope.
+})();
+
+// This GC will reclaim the target objects.
+gc();
+assertEquals(0, cleanup_call_count);
+
+// Assert that the cleanup function will be called only for the reference which
+// was not unregistered.
+let timeout_func = function() {
+  assertEquals(1, cleanup_call_count);
+  assertEquals(1, cleanup_holdings_count);
+}
+
+setTimeout(timeout_func, 0);
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-when-cleanup-already-scheduled.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-when-cleanup-already-scheduled.js
similarity index 65%
rename from implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-when-cleanup-already-scheduled.js
rename to implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-when-cleanup-already-scheduled.js
index 159fb0b140..2466568397 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/clear-when-cleanup-already-scheduled.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/unregister-when-cleanup-already-scheduled.js
@@ -9,14 +9,14 @@ let cleanup = function(iter) {
   ++cleanup_call_count;
 }
 
-let wf = new WeakFactory(cleanup);
-// Create an object and a WeakCell pointing to it. The object needs to be inside
+let key = {"k": "this is my key"};
+let fg = new FinalizationGroup(cleanup);
+// Create an object and register it in the FinalizationGroup. The object needs to be inside
 // a closure so that we can reliably kill them!
-let weak_cell;
 
 (function() {
   let object = {};
-  weak_cell = wf.makeCell(object);
+  fg.register(object, {}, key);
 
   // object goes out of scope.
 })();
@@ -25,10 +25,10 @@ let weak_cell;
 gc();
 assertEquals(0, cleanup_call_count);
 
-// Clear the WeakCell before cleanup has ran.
-weak_cell.clear();
+// Unregister the object from the FinalizationGroup before cleanup has ran.
+fg.unregister(key);
 
-// Assert that the cleanup function won't be called, since the WeakCell was cleared.
+// Assert that the cleanup function won't be called.
 let timeout_func = function() {
   assertEquals(0, cleanup_call_count);
 }
diff --git a/implementation-contributed/v8/mjsunit/harmony/weakrefs/weak-cell-basics.js b/implementation-contributed/v8/mjsunit/harmony/weakrefs/weak-cell-basics.js
index eb365986d7..170a52df10 100644
--- a/implementation-contributed/v8/mjsunit/harmony/weakrefs/weak-cell-basics.js
+++ b/implementation-contributed/v8/mjsunit/harmony/weakrefs/weak-cell-basics.js
@@ -8,16 +8,17 @@ let cleanup_called = false;
 let cleanup = function(iter) {
   assertFalse(cleanup_called);
   let result = iter.next();
-  assertEquals(result.value, wc);
+  assertEquals(result.value, holdings);
   assertFalse(result.done);
   result = iter.next();
   assertTrue(result.done);
   cleanup_called = true;
 }
 
-let wf = new WeakFactory(cleanup);
+let fg = new FinalizationGroup(cleanup);
 let o = {};
-let wc = wf.makeCell(o);
+let holdings = {'h': 55};
+fg.register(o, holdings);
 
 gc();
 assertFalse(cleanup_called);
diff --git a/implementation-contributed/v8/mjsunit/integrity-level-map-update.js b/implementation-contributed/v8/mjsunit/integrity-level-map-update.js
new file mode 100644
index 0000000000..b4e066f7de
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/integrity-level-map-update.js
@@ -0,0 +1,166 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax
+
+(function SealAndReconfigure() {
+  function C() { this.x = 1; this.y = 1; Object.seal(this); }
+
+  let c1 = new C();
+
+  c1.x = 0.1;
+
+  let c2 = new C();
+  let c3 = new C();
+  let c4 = new C();
+
+  // The objects c2, c3 and c4 should follow the same transition
+  // path that we reconfigured c1 to.
+  assertTrue(%HaveSameMap(c1, c2));
+  assertTrue(%HaveSameMap(c1, c3));
+  assertTrue(%HaveSameMap(c1, c4));
+
+  c2.x = 0.1;
+  c3.x = 0.1;
+  c4.x = 0.1;
+
+  assertTrue(%HaveSameMap(c1, c2));
+  assertTrue(%HaveSameMap(c1, c3));
+  assertTrue(%HaveSameMap(c1, c4));
+})();
+
+(function SealAndReconfigureWithIC() {
+  function C() { this.x = 1; this.y = 1; Object.seal(this); }
+
+  let c1 = new C();
+
+  function g(o) {
+    o.x = 0.1;
+  }
+
+  g(c1);
+
+  let c2 = new C();
+  let c3 = new C();
+  let c4 = new C();
+
+  // The objects c2, c3 and c4 should follow the same transition
+  // path that we reconfigured c1 to.
+  assertTrue(%HaveSameMap(c1, c2));
+  assertTrue(%HaveSameMap(c1, c3));
+  assertTrue(%HaveSameMap(c1, c4));
+
+  g(c2);
+  g(c3);
+  g(c4);
+
+  assertTrue(%HaveSameMap(c1, c2));
+  assertTrue(%HaveSameMap(c1, c3));
+  assertTrue(%HaveSameMap(c1, c4));
+})();
+
+(function SealReconfigureAndMigrateWithIC() {
+  function C() { this.x = 1; this.y = 1; Object.seal(this); }
+
+  let c1 = new C();
+  let c2 = new C();
+  let c3 = new C();
+  let c4 = new C();
+
+  function g(o) {
+    o.x = 0.1;
+  }
+
+  g(c1);
+
+  // Now c2, c3 and c4 have deprecated maps.
+  assertFalse(%HaveSameMap(c1, c2));
+  assertFalse(%HaveSameMap(c1, c3));
+  assertFalse(%HaveSameMap(c1, c4));
+
+  g(c2);
+  g(c3);
+  g(c4);
+
+  assertTrue(%HaveSameMap(c1, c2));
+  assertTrue(%HaveSameMap(c1, c3));
+  assertTrue(%HaveSameMap(c1, c4));
+})();
+
+(function SealReconfigureAndMigrateWithOptCode() {
+  function C() { this.x = 1; this.y = 1; Object.seal(this); }
+
+  let c1 = new C();
+  let c2 = new C();
+  let c3 = new C();
+  let c4 = new C();
+
+  function g(o) {
+    o.x = 0.1;
+  }
+
+  g(c1);
+  g(c2);
+  g(c3);
+  %OptimizeFunctionOnNextCall(g);
+  g(c4);
+
+  assertTrue(%HaveSameMap(c1, c2));
+  assertTrue(%HaveSameMap(c1, c3));
+  assertTrue(%HaveSameMap(c1, c4));
+})();
+
+(function PreventExtensionsAndReconfigure() {
+  function C() { this.x = 1; this.y = 1; Object.preventExtensions(this); }
+
+  let c1 = new C();
+
+  function g(o) {
+    o.x = 0.1;
+  }
+
+  g(c1);
+
+  let c2 = new C();
+  let c3 = new C();
+  let c4 = new C();
+
+  c2.x = 0.1;
+  c3.x = 0.1;
+  c4.x = 0.1;
+
+  assertTrue(%HaveSameMap(c1, c2));
+  assertTrue(%HaveSameMap(c1, c3));
+  assertTrue(%HaveSameMap(c1, c4));
+})();
+
+(function PreventExtensionsSealAndReconfigure() {
+  function C() {
+    this.x = 1;
+    this.y = 1;
+    Object.preventExtensions(this);
+    Object.seal(this);
+  }
+
+  let c1 = new C();
+
+  function g(o) {
+    o.x = 0.1;
+  }
+
+  g(c1);
+
+  let c2 = new C();
+  let c3 = new C();
+  let c4 = new C();
+
+  c2.x = 0.1;
+  c3.x = 0.1;
+  c4.x = 0.1;
+
+  // Ideally, all the objects would have the same map, but at the moment
+  // we shortcut the unnecessary integrity level transitions.
+  assertTrue(%HaveSameMap(c2, c3));
+  assertTrue(%HaveSameMap(c2, c4));
+})();
diff --git a/implementation-contributed/v8/mjsunit/messages.js b/implementation-contributed/v8/mjsunit/messages.js
index d5c796228c..916a7d554f 100644
--- a/implementation-contributed/v8/mjsunit/messages.js
+++ b/implementation-contributed/v8/mjsunit/messages.js
@@ -126,13 +126,6 @@ test(function() {
   [].join(o);
 }, "Cannot convert object to primitive value", TypeError);
 
-// kCircularStructure
-test(function() {
-  var o = {};
-  o.o = o;
-  JSON.stringify(o);
-}, "Converting circular structure to JSON", TypeError);
-
 // kConstructorNotFunction
 test(function() {
   Map();
diff --git a/implementation-contributed/v8/mjsunit/mjsunit.js b/implementation-contributed/v8/mjsunit/mjsunit.js
index 41f2caee7a..b81c9676e6 100644
--- a/implementation-contributed/v8/mjsunit/mjsunit.js
+++ b/implementation-contributed/v8/mjsunit/mjsunit.js
@@ -213,7 +213,7 @@ var prettyPrinted;
   // TODO(neis): Remove try-catch once BigInts are enabled by default.
   try {
     BigIntPrototypeValueOf = BigInt.prototype.valueOf;
-  } catch(e) {}
+  } catch (e) {}
 
   function classOf(object) {
     // Argument must not be null or undefined.
@@ -480,14 +480,17 @@ var prettyPrinted;
     }
   };
 
+  function executeCode(code) {
+    if (typeof code === 'function')  return code();
+    if (typeof code === 'string') return eval(code);
+    failWithMessage(
+        'Given code is neither function nor string, but ' + (typeof code) +
+        ': <' + prettyPrinted(code) + '>');
+  }
 
   assertThrows = function assertThrows(code, type_opt, cause_opt) {
     try {
-      if (typeof code === 'function') {
-        code();
-      } else {
-        eval(code);
-      }
+      executeCode(code);
     } catch (e) {
       if (typeof type_opt === 'function') {
         assertInstanceof(e, type_opt);
@@ -508,11 +511,10 @@ var prettyPrinted;
     failWithMessage("Did not throw exception");
   };
 
-
   assertThrowsEquals = function assertThrowsEquals(fun, val) {
     try {
       fun();
-    } catch(e) {
+    } catch (e) {
       assertSame(val, e);
       return;
     }
@@ -533,15 +535,11 @@ var prettyPrinted;
     }
   };
 
-
-   assertDoesNotThrow = function assertDoesNotThrow(code, name_opt) {
+  assertDoesNotThrow = function assertDoesNotThrow(code, name_opt) {
     try {
-      if (typeof code === 'function') {
-        return code();
-      } else {
-        return eval(code);
-      }
+      executeCode(code);
     } catch (e) {
+      if (e instanceof MjsUnitAssertionError) throw e;
       failWithMessage("threw an exception: " + (e.message || e));
     }
   };
@@ -584,13 +582,15 @@ var prettyPrinted;
   }
 
   assertPromiseResult = function(promise, success, fail) {
+    if (success !== undefined) assertEquals('function', typeof success);
+    if (fail !== undefined) assertEquals('function', typeof fail);
     const stack = (new Error()).stack;
 
     var test_promise = promise.then(
         result => {
           try {
             if (--promiseTestCount == 0) testRunner.notifyDone();
-            if (success) success(result);
+            if (success !== undefined) success(result);
           } catch (e) {
             // Use setTimeout to throw the error again to get out of the promise
             // chain.
@@ -602,7 +602,7 @@ var prettyPrinted;
         result => {
           try {
             if (--promiseTestCount == 0) testRunner.notifyDone();
-            if (!fail) throw result;
+            if (fail === undefined) throw result;
             fail(result);
           } catch (e) {
             // Use setTimeout to throw the error again to get out of the promise
@@ -667,7 +667,9 @@ var prettyPrinted;
     // option is provided. Such tests must add --opt to flags comment.
     assertFalse((opt_status & V8OptimizationStatus.kNeverOptimize) !== 0,
                 "test does not make sense with --no-opt");
-    assertTrue((opt_status & V8OptimizationStatus.kIsFunction) !== 0, name_opt);
+    assertTrue(
+        (opt_status & V8OptimizationStatus.kIsFunction) !== 0,
+        'should be a function: ' + name_opt);
     if (skip_if_maybe_deopted &&
         (opt_status & V8OptimizationStatus.kMaybeDeopted) !== 0) {
       // When --deopt-every-n-times flag is specified it's no longer guaranteed
@@ -675,7 +677,9 @@ var prettyPrinted;
       // to stress test the deoptimizer.
       return;
     }
-    assertTrue((opt_status & V8OptimizationStatus.kOptimized) !== 0, name_opt);
+    assertTrue(
+        (opt_status & V8OptimizationStatus.kOptimized) !== 0,
+        'should be optimized: ' + name_opt);
   }
 
   isNeverOptimizeLiteMode = function isNeverOptimizeLiteMode() {
@@ -772,7 +776,7 @@ var prettyPrinted;
         return frame;
       });
       return "" + error.message + "\n" + ArrayPrototypeJoin.call(stack, "\n");
-    } catch(e) {};
+    } catch (e) {};
     return error.stack;
   }
 })();
diff --git a/implementation-contributed/v8/mjsunit/mjsunit.status b/implementation-contributed/v8/mjsunit/mjsunit.status
index 884c7cca92..fd13b2750f 100644
--- a/implementation-contributed/v8/mjsunit/mjsunit.status
+++ b/implementation-contributed/v8/mjsunit/mjsunit.status
@@ -1003,4 +1003,1166 @@
   'regress/regress-913844': [SKIP],
 }],
 
+]
+
+    /*
+    ********************************** test262-automation **********************************
+    Summary: The two files have now diverged.
+        File Status: Partially curated & modified.
+        Source Status: Modified since its export.
+        Below is the current and modified source which was exported on Mon Feb 04 2019 19:40:41 GMT+0000 (Coordinated Universal Time)
+    */
+      # Copyright 2012 the V8 project authors. All rights reserved.
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+#       copyright notice, this list of conditions and the following
+#       disclaimer in the documentation and/or other materials provided
+#       with the distribution.
+#     * Neither the name of Google Inc. nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+[
+[ALWAYS, {
+  # Modules which are only meant to be imported from by other tests, not to be
+  # tested standalone.
+  'modules-skip*': [SKIP],
+  'harmony/modules-skip*': [SKIP],
+  'regress/modules-skip*': [SKIP],
+  'wasm/exceptions-utils': [SKIP],
+  'wasm/wasm-module-builder': [SKIP],
+
+  # All tests in the bug directory are expected to fail.
+  'bugs/*': [FAIL],
+
+  ##############################################################################
+  # Fails.
+  'regress/regress-1119': [FAIL],
+
+  # Issue 1719: Slow to collect arrays over several contexts.
+  'regress/regress-524': [SKIP],
+  # When that bug is fixed, revert the expectation to:
+  # Skip long running test in debug.
+  # regress/regress-524: [PASS, ['mode == debug', SKIP]],
+
+  # This test non-deterministically runs out of memory on Windows ia32.
+  'regress/regress-crbug-160010': [SKIP],
+
+  # Issue 3784: setters-on-elements is flaky
+  'setters-on-elements': [PASS, FAIL],
+
+  # Issue 5495: enable the test when the constant field tracking in enabled.
+  'const-field-tracking': [SKIP],
+
+  # Issue 8505: Math.pow is incorrect for asm.js
+  'regress/wasm/regress-8505': [SKIP],
+
+  ##############################################################################
+  # Too slow in debug mode with --stress-opt mode.
+  'regress/regress-create-exception': [PASS, ['mode == debug', SKIP]],
+
+  ##############################################################################
+  # Too slow in debug mode for validation of elements.
+  'regress/regress-430201': [PASS, ['mode == debug', SKIP], ['tsan', SKIP]],
+  'regress/regress-430201b': [PASS, ['mode == debug', SKIP]],
+  'regress/regress-716044': [PASS, ['mode == debug', SKIP]],
+
+  ##############################################################################
+  # Too slow in debug mode for GC stress mode.
+  'regress/regress-crbug-217858': [PASS, ['mode == debug', SKIP]],
+
+  # Too slow in debug mode and under turbofan.
+  'regress/regress-4595': [PASS, NO_VARIANTS, ['mode == debug', SKIP]],
+
+  ##############################################################################
+  # Only RegExp stuff tested, no need for extensive optimizing compiler tests.
+  'regexp-global': [PASS, NO_VARIANTS],
+  'third_party/regexp-pcre/regexp-pcre': [PASS, NO_VARIANTS],
+
+  ##############################################################################
+  # No need to waste time for this test.
+  'd8/d8-performance-now': [PASS, NO_VARIANTS],
+  'regress/regress-crbug-491062': [PASS, NO_VARIANTS],
+
+  # Issue 488: this test sometimes times out.
+  # TODO(arm): This seems to flush out a bug on arm with simulator.
+  'array-constructor': [PASS, SLOW, ['arch == arm and simulator_run == True', SKIP]],
+
+  # Very slow test
+  'regress/regress-crbug-808192' : [PASS, SLOW, NO_VARIANTS, ['mode == debug or arch == arm or arch == arm64 or arch == android_arm or arch == android_arm64 or arch == mipsel or arch == mips64el or arch == mips64 or arch == mips or arch == s390 or arch == s390x or arch == ppc or arch == ppc64', SKIP]],
+
+  # Very slow on ARM and MIPS, contains no architecture dependent code.
+  'unicode-case-overoptimization': [PASS, NO_VARIANTS, ['arch == arm or arch == arm64 or arch == android_arm or arch == android_arm64 or arch == mipsel or arch == mips64el or arch == mips64 or arch == mips', SKIP]],
+  'regress/regress-3976': [PASS, NO_VARIANTS, ['arch == arm or arch == arm64 or arch == android_arm or arch == android_arm64 or arch == mipsel or arch == mips64el or arch == mips64 or arch == mips', SKIP]],
+  'regress/regress-crbug-482998': [PASS, NO_VARIANTS, ['arch == arm or arch == arm64 or arch == android_arm or arch == android_arm64 or arch == mipsel or arch == mips64el or arch == mips', SKIP]],
+  'regress/regress-740784': [PASS, NO_VARIANTS, ['arch == arm or arch == arm64 or arch == android_arm or arch == android_arm64 or arch == mipsel or arch == mips64el or arch == mips', SKIP]],
+
+  # This test allocates a 2G block of memory and if there are multiple
+  # variants this can lead to OOM.
+  'regress/regress-crbug-514081': [PASS, NO_VARIANTS],
+
+  ##############################################################################
+  # Skip long running tests that time out in debug mode.
+  'generated-transition-stub': [PASS, ['mode == debug', SKIP]],
+  'migrations': [SKIP],
+  'array-functions-prototype-misc': [PASS, SLOW, ['mode == debug', SKIP]],
+  'compiler/regress-808472': [PASS, ['mode == debug', SKIP]],
+  'es6/promise-all-overflow-1': [SKIP],
+  'es6/promise-all-overflow-2': [PASS, SLOW, ['mode == debug or arch != x64', SKIP]],
+
+  ##############################################################################
+  # This test sets the umask on a per-process basis and hence cannot be
+  # used in multi-threaded runs.
+  # On android there is no /tmp directory.
+  # Currently d8-os generates a temporary directory name using Math.random(), so
+  # we cannot run several variants of d8-os simultaneously, since all of them
+  # get the same random seed and would generate the same directory name. Besides
+  # that, it doesn't make sense to run several variants of d8-os anyways.
+  'd8/d8-os': [PASS, NO_VARIANTS, ['isolates or arch == android_arm or arch == android_arm64 or arch == android_ia32', SKIP]],
+  'tools/tickprocessor': [PASS, NO_VARIANTS, ['arch == android_arm or arch == android_arm64 or arch == android_ia32', SKIP]],
+  'tools/dumpcpp': [PASS, NO_VARIANTS, ['arch == android_arm or arch == android_arm64 or arch == android_ia32', SKIP]],
+
+  ##############################################################################
+  # These tests generate files in the test directory, so we cannot run several
+  # variants of them simultaneously. Additionally they should not be affected by
+  # variants.
+  'd8/enable-tracing': [PASS, NO_VARIANTS],
+  'tools/compiler-trace-flags': [PASS, NO_VARIANTS],
+
+  ##############################################################################
+  # Long running test that reproduces memory leak and should be run manually.
+  'regress/regress-2073': [SKIP],
+
+  ##############################################################################
+  # Tests verifying CHECK and ASSERT.
+  'verify-check-false': [FAIL, NO_VARIANTS],
+  'verify-assert-false': [NO_VARIANTS, ['mode == release and dcheck_always_on == False', PASS], ['mode == debug', FAIL]],
+
+  ##############################################################################
+  # Tests with different versions for release and debug.
+  'compiler/alloc-number': [PASS, ['mode == debug', SKIP]],
+  'compiler/alloc-number-debug': [PASS, ['mode == release', SKIP]],
+  'regress/regress-634-debug': [PASS, ['mode == release', SKIP]],
+
+  # BUG(v8:2989).
+  'regress/regress-2989': [FAIL, NO_VARIANTS, ['lite_mode == True', SKIP]],
+
+  # This test variant makes only sense on arm.
+  'math-floor-of-div-nosudiv': [PASS, SLOW, ['arch not in [arm, arm64, android_arm, android_arm64]', SKIP]],
+
+  # Too slow for slow variants.
+  'asm/embenchen/*': [PASS, SLOW, NO_VARIANTS],
+  'asm/poppler/*': [PASS, SLOW, NO_VARIANTS],
+  'asm/sqlite3/*': [PASS, SLOW, NO_VARIANTS],
+
+  # OOM flakes in isolates tests because too many largish heaps are created.
+  'asm/asm-heap': [PASS, NO_VARIANTS, ['isolates', SKIP]],
+
+  # Slow tests.
+  'copy-on-write-assert': [PASS, SLOW],
+  'es6/typedarray-construct-offset-not-smi': [PASS, SLOW],
+  'harmony/regexp-property-script-extensions': [PASS, SLOW],
+  'md5': [PASS, SLOW],
+  'numops-fuzz-part*': [PASS, ['mode == debug', SLOW]],
+  'readonly': [PASS, SLOW],
+  'regress/regress-1122': [PASS, SLOW],
+  'regress/regress-605470': [PASS, SLOW],
+  'regress/regress-655573': [PASS, SLOW],
+  'regress/regress-1200351': [PASS, SLOW],
+  'regress/wasm/regress-810973': [PASS, SLOW],
+  'string-replace-gc': [PASS, SLOW],
+  'wasm/asm-wasm-f32': [PASS, SLOW],
+  'wasm/asm-wasm-f64': [PASS, SLOW],
+  'wasm/embenchen/*': [PASS, SLOW],
+  'wasm/grow-memory': [PASS, SLOW],
+  'wasm/unreachable-validation': [PASS, SLOW],
+  'wasm/atomics-stress': [PASS, SLOW, NO_VARIANTS, ['mode != release or dcheck_always_on', SKIP], ['(arch == arm or arch == arm64) and simulator_run', SKIP], ['tsan', SKIP]],
+  'wasm/atomics64-stress': [PASS, SLOW, NO_VARIANTS, ['mode != release or dcheck_always_on', SKIP], ['(arch == arm or arch == arm64) and simulator_run', SKIP], ['tsan', SKIP]],
+  'wasm/compare-exchange-stress': [PASS, SLOW, NO_VARIANTS],
+  'wasm/compare-exchange64-stress': [PASS, SLOW, NO_VARIANTS],
+
+  # case-insensitive unicode regexp relies on case mapping provided by ICU.
+  'es6/unicode-regexp-ignore-case': [PASS, ['no_i18n == True', FAIL]],
+  'es6/unicode-regexp-ignore-case-noi18n': [FAIL, ['no_i18n == True', PASS]],
+  'regress/regress-5036': [PASS, ['no_i18n == True', FAIL]],
+  'es7/regexp-ui-word': [PASS, ['no_i18n == True', FAIL]],
+  'regexp-modifiers-i18n': [PASS, ['no_i18n == True', FAIL]],
+  'regexp-modifiers-autogenerated-i18n': [PASS, ['no_i18n == True', FAIL]],
+  # desugaring regexp property class relies on ICU.
+  'harmony/regexp-property-*': [PASS, ['no_i18n == True', FAIL]],
+  'regress/regress-793588': [PASS, ['no_i18n == True', FAIL]],
+
+  # noi18n build cannot parse characters in supplementary plane.
+  'harmony/regexp-named-captures': [PASS, ['no_i18n == True', FAIL]],
+
+  # noi18n cannot turn on ICU backend for Date
+  'icu-date-to-string': [PASS, ['no_i18n == True', SKIP]],
+  'icu-date-lord-howe': [PASS, ['no_i18n == True', SKIP]],
+  'tzoffset-transition-apia': [PASS, ['no_i18n == True', SKIP]],
+  'tzoffset-transition-lord-howe': [PASS, ['no_i18n == True', SKIP]],
+  'tzoffset-transition-moscow': [PASS, ['no_i18n == True', SKIP]],
+  'tzoffset-transition-new-york': [PASS, ['no_i18n == True', SKIP]],
+  'tzoffset-seoul': [PASS, ['no_i18n == True', SKIP]],
+
+  # TODO(bmeurer): Flaky timeouts (sometimes <1s, sometimes >3m).
+  'unicodelctest': [PASS, NO_VARIANTS],
+  'unicodelctest-no-optimization': [PASS, NO_VARIANTS],
+
+  # TODO(vogelheim): big-object-literal exceeds the stack in debug builds,
+  #                  which makes the test useless.
+  'big-object-literal': [PASS, ['mode == debug', SKIP]],
+
+  # Runs out of stack space in debug builds.
+  'big-array-literal': [PASS, ['mode == debug', SKIP]],
+
+  # BUG(v8:6306).
+  'wasm/huge-memory': [SKIP],
+
+  # Allocates a huge string and then flattens it, very slow in debug mode.
+  'regress/regress-752764': [PASS, ['mode == debug', SLOW]],
+
+  # https://crbug.com/v8/7697
+  'array-literal-feedback': [PASS, FAIL],
+
+  # https://crbug.com/v8/7775
+  'allocation-site-info': [SKIP],
+
+  # BUG(v8:8169)
+  'external-backing-store-gc': [SKIP],
+
+  # https://crbug.com/v8/8781
+  'compiler/string-from-code-point': [PASS, FAIL],
+}],  # ALWAYS
+
+['novfp3 == True', {
+  'asm/embenchen/box2d': [SKIP],
+  'asm/embenchen/zlib': [SKIP],
+  'asm/embenchen/memops': [SKIP],
+  'asm/embenchen/lua_binarytrees': [SKIP],
+}],  # novfp3 == True
+
+##############################################################################
+# TODO(ahaas): Port multiple return values to ARM, MIPS, S390 and PPC
+['arch == arm or arch == arm64 or arch == mips or arch == mips64 or arch == mipsel or arch == mips64el or arch == s390 or arch == s390x or arch == ppc or arch == ppc64', {
+  'wasm/multi-value': [SKIP],
+}],
+
+##############################################################################
+['gc_stress == True', {
+  # Skip tests not suitable for GC stress.
+  'allocation-site-info': [SKIP],
+  'array-constructor-feedback': [SKIP],
+  'array-feedback': [SKIP],
+  'array-literal-feedback': [SKIP],
+  'd8/d8-performance-now': [SKIP],
+  'elements-kind': [SKIP],
+  'elements-transition-hoisting': [SKIP],
+  'fast-prototype': [SKIP],
+  'field-type-tracking': [SKIP],
+  'getters-on-elements': [SKIP],
+  'es6/block-let-crankshaft': [SKIP],
+  'opt-elements-kind': [SKIP],
+  'osr-elements-kind': [SKIP],
+  'regress/regress-crbug-137689': [SKIP],
+  'regress/regress-trap-allocation-memento': [SKIP],
+  'regress/regress-2249': [SKIP],
+  'regress/regress-4121': [SKIP],
+  'regress/regress-6989': [SKIP],
+  'compare-known-objects-slow': [SKIP],
+  'compiler/array-multiple-receiver-maps': [SKIP],
+  # Tests taking too long
+  'packed-elements': [SKIP],
+  'regress/regress-1122': [SKIP],
+  'regress/regress-331444': [SKIP],
+  'regress/regress-353551': [SKIP],
+  'regress/regress-crbug-119926': [SKIP],
+  'regress/short-circuit': [SKIP],
+  'stack-traces-overflow': [SKIP],
+  'unicode-test': [SKIP],
+  'whitespaces': [SKIP],
+
+  # Unsuitable for GC stress because coverage information is lost on GC.
+  'code-coverage-ad-hoc': [SKIP],
+  'code-coverage-precise': [SKIP],
+
+  # TODO(mstarzinger): Takes too long with TF.
+  'array-sort': [PASS, NO_VARIANTS],
+  'regress/regress-91008': [PASS, NO_VARIANTS],
+  'regress/regress-transcendental': [PASS, ['arch == arm64', NO_VARIANTS]],
+  'compiler/osr-regress-max-locals': [PASS, NO_VARIANTS],
+  'math-floor-of-div': [PASS, NO_VARIANTS],
+  'unicodelctest': [PASS, NO_VARIANTS],
+  'unicodelctest-no-optimization': [PASS, NO_VARIANTS],
+
+  # TODO(jkummerow): Doesn't work correctly in GC stress.
+  'regress/regress-crbug-500497': [SKIP],
+
+  # Too slow for gc stress.
+  'asm/embenchen/box2d': [SKIP],
+
+  # BUG(v8:4237)
+  'regress/regress-3976': [SKIP],
+
+  # Slow tests.
+  'array-constructor': [PASS, SLOW],
+  'json': [PASS, SLOW],
+
+  # BUG(v8:4779): Crashes flakily with stress mode on arm64.
+  'array-splice': [PASS, SLOW, ['arch == arm64', NO_VARIANTS]],
+
+  # BUG(v8:7880): Slow tests.
+  'regress/regress-707066': [SKIP],
+  'regress/regress-446389': [SKIP],
+  'regress/regress-458987': [SKIP],
+  'es6/regress/regress-crbug-465671': [SKIP],
+  'regress/regress-inline-getter-near-stack-limit': [SKIP],
+  'es6/regress/regress-crbug-465671-null': [SKIP],
+  'regress/regress-148378': [SKIP],
+  'regress/regress-crbug-762472': [SKIP],
+}],  # 'gc_stress == True'
+
+##############################################################################
+['lite_mode or variant == jitless', {
+  # Skip tests not suitable for lite_mode.
+
+  # TODO(8596): We cache the templates in the feedback vector. In lite mode
+  # without feedback vectors we need to implement some other mechanism to cache
+  # them. Enable this test after fixing it.
+  'es6/templates': [SKIP],
+
+  # code coverage needs feedback vectors
+  'code-coverage-ad-hoc': [SKIP],
+  'code-coverage-class-fields': [SKIP],
+  'code-coverage-block-noopt': [SKIP],
+  'code-coverage-block': [SKIP],
+  'code-coverage-precise': [SKIP],
+
+  # Needs feedback vector - tests for allocation sites
+  'array-constructor-feedback': [SKIP],
+  'regress/regress-trap-allocation-memento': [SKIP],
+  'regress/regress-4121': [SKIP],
+
+  # Slow tests without feedback vectors
+  # TODO(mythria): Investigate why they are slow and either fix if
+  # possible are update the reason why they are slow.
+  'spread-large-string': [SKIP],
+  'spread-large-array': [SKIP],
+
+  # TODO(v8:7777): Re-enable once wasm is supported in jitless mode.
+  'regress/regress-5888': [SKIP],
+  'regress/regress-5911': [SKIP],
+  'regress/regress-813440': [SKIP],
+  'regress/regress-crbug-746835': [SKIP],
+  'regress/regress-crbug-772056': [SKIP],
+  'regress/wasm/*': [SKIP],
+  'tools/compiler-trace-flags': [SKIP],
+  'wasm/*': [SKIP],
+
+  # Other tests that use asm / wasm / optimized code.
+  'asm/asm-heap': [SKIP],
+  'asm/asm-validation': [SKIP],
+  'asm/call-stdlib': [SKIP],
+  'asm/call-annotation': [SKIP],
+  'asm/global-imports': [SKIP],
+  'asm/regress-913822': [SKIP],
+  'asm/return-types': [SKIP],
+  'regress/regress-599719': [SKIP],
+  'regress/regress-6196': [SKIP],
+  'regress/regress-6700': [SKIP],
+  'regress/regress-6838-2': [SKIP],
+  'regress/regress-6838-3': [SKIP],
+
+  # Timeouts in lite / jitless mode.
+  'asm/embenchen/*': [SKIP],
+
+  # Tests that generate code at runtime.
+  'code-comments': [SKIP],
+  'regress/regress-617526': [SKIP],
+  'regress/regress-7893': [SKIP],
+  'regress/regress-8377': [SKIP],
+  'regress/regress-863810': [SKIP],
+  'regress/regress-crbug-721835': [SKIP],
+  'regress/regress-crbug-759327': [SKIP],
+  'regress/regress-crbug-898974': [SKIP],
+}],  # 'lite_mode or variant == jitless'
+
+##############################################################################
+['variant == jitless', {
+  # https://crbug.com/v8/7777
+  'array-literal-transitions': [SKIP],
+  'array-push5': [SKIP],
+  'array-shift4': [SKIP],
+  'array-store-and-grow': [SKIP],
+  'code-coverage-block-opt': [SKIP],
+  'compiler/abstract-equal-receiver': [SKIP],
+  'compiler/abstract-equal-symbol': [SKIP],
+  'compiler/abstract-equal-undetectable': [SKIP],
+  'compiler/array-buffer-is-view': [SKIP],
+  'compiler/array-multiple-receiver-maps': [SKIP],
+  'compiler/array-push-3': [SKIP],
+  'compiler/array-slice-clone': [SKIP],
+  'compiler/constant-fold-cow-array': [SKIP],
+  'compiler/dataview-deopt': [SKIP],
+  'compiler/dataview-get': [SKIP],
+  'compiler/dataview-neutered': [SKIP],
+  'compiler/dataview-set': [SKIP],
+  'compiler/deopt-array-builtins': [SKIP],
+  'compiler/deopt-array-push': [SKIP],
+  'compiler/deopt-inlined-from-call': [SKIP],
+  'compiler/deopt-numberoroddball-binop': [SKIP],
+  'compiler/deopt-string-outofbounds': [SKIP],
+  'compiler/increment-typefeedback': [SKIP],
+  'compiler/inlined-array-pop-opt': [SKIP],
+  'compiler/inlined-call': [SKIP],
+  'compiler/integral32-add-sub': [SKIP],
+  'compiler/manual-concurrent-recompile': [SKIP],
+  'compiler/math-imul': [SKIP],
+  'compiler/native-context-specialization-hole-check': [SKIP],
+  'compiler/number-abs': [SKIP],
+  'compiler/number-ceil': [SKIP],
+  'compiler/number-comparison-truncations': [SKIP],
+  'compiler/number-divide': [SKIP],
+  'compiler/number-floor': [SKIP],
+  'compiler/number-max': [SKIP],
+  'compiler/number-min': [SKIP],
+  'compiler/number-modulus': [SKIP],
+  'compiler/number-round': [SKIP],
+  'compiler/number-toboolean': [SKIP],
+  'compiler/number-trunc': [SKIP],
+  'compiler/optimized-float32array-length': [SKIP],
+  'compiler/optimized-float64array-length': [SKIP],
+  'compiler/optimized-int32array-length': [SKIP],
+  'compiler/optimized-uint32array-length': [SKIP],
+  'compiler/opt-next-call': [SKIP],
+  'compiler/opt-next-call-turbo': [SKIP],
+  'compiler/promise-resolve-stable-maps': [SKIP],
+  'compiler/redundancy-elimination': [SKIP],
+  'compiler/regress-5320': [SKIP],
+  'compiler/regress-compare-negate': [SKIP],
+  'compiler/stress-deopt-count-1': [SKIP],
+  'compiler/stress-deopt-count-2': [SKIP],
+  'compiler/string-from-code-point': [SKIP],
+  'compiler/uint8-clamped-array': [SKIP],
+  'constant-folding-2': [SKIP],
+  'default-nospec': [SKIP],
+  'deopt-minus-zero': [SKIP],
+  'deopt-recursive-eager-once': [SKIP],
+  'deopt-recursive-lazy-once': [SKIP],
+  'deopt-recursive-soft-once': [SKIP],
+  'deopt-unlinked': [SKIP],
+  'deopt-with-fp-regs': [SKIP],
+  'deserialize-optimize-inner': [SKIP],
+  'div-mul-minus-one': [SKIP],
+  'elements-transition-hoisting': [SKIP],
+  'ensure-growing-store-learns': [SKIP],
+  'es6/array-iterator-turbo': [SKIP],
+  'es6/block-let-crankshaft': [SKIP],
+  'es6/block-let-crankshaft-sloppy': [SKIP],
+  'es6/block-scoping': [SKIP],
+  'es6/block-scoping-sloppy': [SKIP],
+  'es6/collections-constructor-custom-iterator': [SKIP],
+  'es6/collections-constructor-iterator-side-effect': [SKIP],
+  'es6/collections-constructor-with-modified-array-prototype': [SKIP],
+  'es6/collections-constructor-with-modified-protoype': [SKIP],
+  'es6/map-constructor-entry-side-effect': [SKIP],
+  'es6/map-constructor-entry-side-effect2': [SKIP],
+  'es6/map-constructor-entry-side-effect3': [SKIP],
+  'es6/map-constructor-entry-side-effect4': [SKIP],
+  'field-type-tracking': [SKIP],
+  'getters-on-elements': [SKIP],
+  'ignition/throw-if-hole': [SKIP],
+  'ignition/throw-if-not-hole': [SKIP],
+  'ignition/throw-super-not-called': [SKIP],
+  'keyed-load-hole-to-undefined': [SKIP],
+  'keyed-load-with-string-key': [SKIP],
+  'keyed-load-with-symbol-key': [SKIP],
+  'math-deopt': [SKIP],
+  'math-floor-of-div-minus-zero': [SKIP],
+  'modules-turbo1': [SKIP],
+  'never-optimize': [SKIP],
+  'object-seal': [SKIP],
+  'optimized-map': [SKIP],
+  'regress/regress-2132': [SKIP],
+  'regress/regress-2250': [SKIP],
+  'regress/regress-2315': [SKIP],
+  'regress/regress-2339': [SKIP],
+  'regress/regress-2451': [SKIP],
+  'regress/regress-252797': [SKIP],
+  'regress/regress-2618': [SKIP],
+  'regress/regress-3176': [SKIP],
+  'regress/regress-3650-3': [SKIP],
+  'regress/regress-3709': [SKIP],
+  'regress/regress-385565': [SKIP],
+  'regress/regress-4380': [SKIP],
+  'regress/regress-5404': [SKIP],
+  'regress/regress-5790': [SKIP],
+  'regress/regress-5802': [SKIP],
+  'regress/regress-6607-1': [SKIP],
+  'regress/regress-6607-2': [SKIP],
+  'regress/regress-6941': [SKIP],
+  'regress/regress-6948': [SKIP],
+  'regress/regress-6989': [SKIP],
+  'regress/regress-6991': [SKIP],
+  'regress/regress-7014-1': [SKIP],
+  'regress/regress-7014-2': [SKIP],
+  'regress/regress-7135': [SKIP],
+  'regress/regress-7254': [SKIP],
+  'regress/regress-7510': [SKIP],
+  'regress/regress-794825': [SKIP],
+  'regress/regress-crbug-554831': [SKIP],
+  'regress/regress-crbug-587068': [SKIP],
+  'regress/regress-crbug-594183': [SKIP],
+  'regress/regress-crbug-882233-2': [SKIP],
+  'regress/regress-embedded-cons-string': [SKIP],
+  'regress/regress-map-invalidation-2': [SKIP],
+  'regress/regress-param-local-type': [SKIP],
+  'regress/regress-store-uncacheable': [SKIP],
+  'regress/regress-v8-5697': [SKIP],
+  'shared-function-tier-up-turbo': [SKIP],
+  'shift-for-integer-div': [SKIP],
+  'sin-cos': [SKIP],
+  'smi-mul': [SKIP],
+  'smi-mul-const': [SKIP],
+  'string-deopt': [SKIP],
+  'strong-rooted-literals': [SKIP],
+  'unary-minus-deopt': [SKIP],
+}], # variant == jitless
+
+##############################################################################
+['byteorder == big', {
+  # Emscripten requires little-endian, skip all tests on big endian platforms.
+  'asm/embenchen/*': [SKIP],
+  'asm/poppler/*': [SKIP],
+  'asm/sqlite3/*': [SKIP],
+  # TODO(mips-team): Fix Wasm for big-endian.
+  'wasm/*': [SKIP],
+}],  # 'byteorder == big'
+
+##############################################################################
+['arch == arm64 or arch == android_arm64', {
+
+  # Requires bigger stack size in the Genesis and if stack size is increased,
+  # the test requires too much time to run.  However, the problem test covers
+  # should be platform-independent.
+  'regress/regress-1132': [SKIP],
+
+  # Pass but take too long to run. Skip.
+  # Some similar tests (with fewer iterations) may be included in arm64-js
+  # tests.
+  'asm/embenchen/box2d': [SKIP],
+  'asm/embenchen/lua_binarytrees': [SKIP],
+  'big-object-literal': [SKIP],
+  'compiler/regress-arguments': [SKIP],
+  'compiler/regress-gvn': [SKIP],
+  'compiler/regress-4': [SKIP],
+  'compiler/regress-or': [SKIP],
+  'compiler/regress-rep-change': [SKIP],
+  'regress/regress-1117': [SKIP],
+  'regress/regress-1849': [SKIP],
+  'regress/regress-3247124': [SKIP],
+  'regress/regress-91008': [SKIP],
+  'regress/regress-91010': [SKIP],
+  'regress/regress-91013': [SKIP],
+  'regress/regress-99167': [SKIP],
+
+  # BUG(v8:3457).
+  'deserialize-reference': [PASS, FAIL],
+
+  # BUG(v8:4016)
+  'regress/regress-crbug-467047': [SKIP],
+
+  # Slow tests.
+  'array-concat': [PASS, SLOW],
+  'array-indexing': [PASS, SLOW],
+  'array-reduce': [PASS, SLOW],
+  'array-sort': [PASS, SLOW],
+  'array-splice': [PASS, SLOW],
+  'bit-not': [PASS, SLOW],
+  'compiler/alloc-number': [PASS, SLOW],
+  'compiler/osr-with-args': [PASS, SLOW],
+  'generated-transition-stub': [PASS, SLOW],
+  'json2': [PASS, SLOW],
+  'math-floor-of-div-nosudiv': [PASS, SLOW],
+  'math-floor-of-div': [PASS, SLOW],
+  'messages': [PASS, SLOW],
+  'packed-elements': [PASS, SLOW],
+  'regress/regress-2790': [PASS, SLOW],
+  'regress/regress-331444': [PASS, SLOW],
+  'regress/regress-490': [PASS, SLOW],
+  'regress/regress-crbug-217858': [PASS, SLOW],
+  'regress/regress-create-exception': [PASS, SLOW],
+  'regress/regress-json-stringify-gc': [PASS, SLOW],
+  'string-indexof-2': [PASS, SLOW],
+  'unicodelctest-no-optimization': [PASS, SLOW],
+  'unicodelctest': [PASS, SLOW],
+  'unicode-test': [PASS, SLOW],
+  'wasm/atomics': [PASS, SLOW],
+  'whitespaces': [PASS, SLOW],
+
+  # BUG(v8:7247).
+  'regress/regress-779407': [PASS, SLOW, NO_VARIANTS],
+}],  # 'arch == arm64'
+
+['arch == arm64 and mode == debug and simulator_run', {
+
+  # Pass but take too long with the simulator in debug mode.
+  'array-sort': [PASS, SLOW],
+  'packed-elements': [SKIP],
+  'regexp-global': [SKIP],
+  'math-floor-of-div': [PASS, SLOW],
+  'math-floor-of-div-nosudiv': [PASS, SLOW],
+  'unicodelctest': [PASS, SLOW],
+  'unicodelctest-no-optimization': [PASS, SLOW],
+  # Issue 3219:
+  'getters-on-elements': [PASS, ['gc_stress == True', FAIL]],
+}],  # 'arch == arm64 and mode == debug and simulator_run'
+
+##############################################################################
+['asan == True', {
+  # Skip tests not suitable for ASAN.
+  'big-array-literal': [SKIP],
+  'big-object-literal': [SKIP],
+  'regress/regress-crbug-178790': [SKIP],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=4639
+  # The failed allocation causes an asan/msan/tsan error
+  'es6/typedarray-construct-offset-not-smi': [SKIP],
+
+  # Exception thrown during bootstrapping on ASAN builds, see issue 4236.
+  'regress/regress-1132': [SKIP],
+
+  # Flaky on ASAN builds: https://bugs.chromium.org/p/v8/issues/detail?id=6305
+  'regress/regress-430201': [SKIP],
+  'regress/regress-430201b': [SKIP],
+
+  # Stack overflow on windows.
+  'es8/regress/regress-624300': [PASS, ['system == windows', SKIP]],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=7102
+  # Flaky due to huge string allocation.
+  'regress/regress-748069': [SKIP],
+}],  # 'asan == True'
+
+##############################################################################
+['msan == True', {
+  # Skip tests not suitable for MSAN.
+  'big-array-literal': [SKIP],
+  # ICU upstream issues.
+  'date': [SKIP],
+  'deep-recursion': [SKIP],
+  'regress/regress-builtinbust-7': [SKIP],
+  'string-localecompare': [SKIP],
+
+  # Too slow.
+  'harmony/regexp-property-lu-ui': [SKIP],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=7102
+  # Flaky due to huge string allocation.
+  'regress/regress-748069': [SKIP],
+  # Slow test.
+  'regress/regress-779407': [PASS, SLOW],
+}],  # 'msan == True'
+
+##############################################################################
+['tsan == True', {
+  # https://bugs.chromium.org/p/v8/issues/detail?id=7102
+  # Flaky due to huge string allocation.
+  'regress/regress-748069': [SKIP],
+
+  # Allocates a large array buffer, which TSAN sometimes cannot handle.
+  'regress/regress-599717': [SKIP],
+
+  # BUG(v8:7042). Uses a lot of memory.
+  'regress/regress-678917': [SKIP],
+
+  # BUG(v8:8103). Uses a lot of memory.
+  'regress/regress-852258': [SKIP],
+
+  # BUG(v8:6924). The test uses a lot of memory.
+  'regress/wasm/regress-694433': [SKIP],
+  'es6/typedarray': [PASS, NO_VARIANTS],
+  'regress/regress-752764': [PASS, NO_VARIANTS],
+}],  # 'tsan == True'
+
+##############################################################################
+['arch == arm or arch == android_arm', {
+
+  # Slow tests which times out in debug mode.
+  'try': [PASS, ['mode == debug', SKIP]],
+  'array-constructor': [PASS, ['mode == debug', SKIP]],
+  'regress/regress-1122': [PASS, SLOW, ['mode == debug and arch == android_arm', SKIP]],
+
+  # Flaky test that can hit compilation-time stack overflow in debug mode.
+  'unicode-test': [PASS, ['mode == debug', PASS, FAIL]],
+
+  # Slow in release mode on ARM.
+  'compiler/regress-stacktrace-methods': [PASS, SLOW],
+  'array-splice': [PASS, SLOW],
+
+  # Long running tests. Skipping because having them timeout takes too long on
+  # the buildbot.
+  'big-object-literal': [SKIP],
+  'compiler/alloc-number': [SKIP],
+  'regress/regress-490': [SKIP],
+  'regress/regress-create-exception': [SKIP],
+  'regress/regress-3247124': [SKIP],
+
+  # Requires bigger stack size in the Genesis and if stack size is increased,
+  # the test requires too much time to run.  However, the problem test covers
+  # should be platform-independent.
+  'regress/regress-1132': [SKIP],
+
+  # Currently always deopt on minus zero
+  'math-floor-of-div-minus-zero': [SKIP],
+
+  # Slow tests.
+  'array-sort': [PASS, SLOW],
+  'compiler/osr-with-args': [PASS, SLOW],
+  'packed-elements': [PASS, SLOW],
+  'regress/regress-2790': [PASS, SLOW],
+  'regress/regress-91008': [PASS, SLOW],
+  'regress/regress-json-stringify-gc': [PASS, SLOW],
+  'string-indexof-2': [PASS, SLOW],
+  'wasm/atomics': [PASS, SLOW],
+}],  # 'arch == arm or arch == android_arm'
+
+##############################################################################
+['(arch == mipsel or arch == mips or arch == mips64el or arch == mips64) and simulator_run != True', {
+  # These tests fail occasionally on the buildbots because they consume
+  # a large amount of memory if executed in parallel. Therefore we
+  # run only a single instance of these tests
+  'regress/regress-crbug-514081': [PASS, NO_VARIANTS],
+  'regress/regress-599717': [PASS, NO_VARIANTS],
+  'regress/regress-599414-array-concat-fast-path': [PASS, NO_VARIANTS],
+  'array-functions-prototype-misc': [PASS, NO_VARIANTS],
+}],  # 'arch == mipsel or arch == mips or arch == mips64el or arch == mips64'
+
+##############################################################################
+['arch == mipsel or arch == mips or arch == mips64el or arch == mips64 or arch == ppc or arch == ppc64', {
+  # These tests fail because qNaN and sNaN values are encoded differently on
+  # MIPS and ARM/x86 architectures
+  'wasm/float-constant-folding': [SKIP],
+}],
+
+##############################################################################
+['arch == mipsel or arch == mips', {
+
+  # Slow tests which times out in debug mode.
+  'try': [PASS, ['mode == debug', SKIP]],
+  'array-constructor': [PASS, ['mode == debug', SKIP]],
+
+  # Slow in release mode on MIPS.
+  'compiler/regress-stacktrace-methods': [PASS, SLOW],
+  'array-splice': [PASS, SLOW],
+
+  # Long running test.
+  'string-indexof-2': [PASS, SLOW],
+
+  # Long running tests. Skipping because having them timeout takes too long on
+  # the buildbot.
+  'compiler/alloc-number': [SKIP],
+  'regress/regress-490': [SKIP],
+  'regress/regress-create-exception': [SKIP],
+  'regress/regress-3247124': [SKIP],
+
+  # Requires bigger stack size in the Genesis and if stack size is increased,
+  # the test requires too much time to run.  However, the problem test covers
+  # should be platform-independent.
+  'regress/regress-1132': [SKIP],
+
+  # Currently always deopt on minus zero
+  'math-floor-of-div-minus-zero': [SKIP],
+
+  # Requires too much memory on MIPS.
+  'regress/regress-752764': [SKIP],
+  'regress/regress-779407': [SKIP],
+  'harmony/bigint/regressions': [SKIP],
+
+  # Pre-r6 MIPS32 doesn't have instructions needed to properly handle 64-bit
+  # atomic instructions.
+  'wasm/atomics64-stress': [PASS, ['mips_arch_variant != r6', SKIP]],
+}],  # 'arch == mipsel or arch == mips'
+
+##############################################################################
+['arch == mips64el or arch == mips64', {
+
+  # Slow tests which times out in debug mode.
+  'try': [PASS, ['mode == debug', SKIP]],
+  'array-constructor': [PASS, ['mode == debug', SKIP]],
+
+  # Slow in release mode on MIPS.
+  'compiler/regress-stacktrace-methods': [PASS, SLOW],
+  'array-splice': [PASS, SLOW],
+
+  # Long running test.
+  'string-indexof-2': [PASS, SLOW],
+
+  # BUG(3251035): Timeouts in long looping crankshaft optimization
+  # tests. Skipping because having them timeout takes too long on the
+  # buildbot.
+  'compiler/alloc-number': [PASS, SLOW],
+  'compiler/array-length': [PASS, SLOW],
+  'compiler/assignment-deopt': [PASS, SLOW],
+  'compiler/deopt-args': [PASS, SLOW],
+  'compiler/inline-compare': [PASS, SLOW],
+  'compiler/inline-global-access': [PASS, SLOW],
+  'compiler/optimized-function-calls': [PASS, SLOW],
+  'compiler/pic': [PASS, SLOW],
+  'compiler/property-calls': [PASS, SLOW],
+  'compiler/recursive-deopt': [PASS, SLOW],
+  'compiler/regress-4': [PASS, SLOW],
+  'compiler/regress-funcaller': [PASS, SLOW],
+  'compiler/regress-rep-change': [PASS, SLOW],
+  'compiler/regress-arguments': [PASS, SLOW],
+  'compiler/regress-funarguments': [PASS, SLOW],
+  'compiler/regress-3249650': [PASS, SLOW],
+  'compiler/simple-deopt': [PASS, SLOW],
+  'regress/regress-490': [PASS, SLOW],
+  'regress/regress-create-exception': [PASS, SLOW],
+  'regress/regress-3218915': [PASS, SLOW],
+  'regress/regress-3247124': [PASS, SLOW],
+
+  # Requires bigger stack size in the Genesis and if stack size is increased,
+  # the test requires too much time to run.  However, the problem test covers
+  # should be platform-independent.
+  'regress/regress-1132': [SKIP],
+
+  # Currently always deopt on minus zero
+  'math-floor-of-div-minus-zero': [SKIP],
+
+  # Requires too much memory on MIPS.
+  'regress/regress-752764': [SKIP],
+  'regress/regress-779407': [SKIP],
+}],  # 'arch == mips64el or arch == mips64'
+
+['(arch == mips64el or arch == mips64) and simulator_run', {
+  # Slow tests which have flaky timeout on simulator.
+  'wasm/atomics64-stress': [SKIP],
+}],  # '(arch == mips64el or arch == mips64) and simulator_run'
+
+##############################################################################
+['system == windows', {
+  # TODO(mstarzinger): Too slow with turbo fan.
+  'big-object-literal': [SKIP],
+  'math-floor-of-div': [PASS, ['mode == debug', SKIP]],
+  'math-floor-of-div-nosudiv': [PASS, ['mode == debug', SKIP]],
+  'unicodelctest': [PASS, ['mode == debug', SKIP]],
+
+  # Setting the timezone and locale with environment variables unavailable
+  'icu-date-to-string': [SKIP],
+  'icu-date-lord-howe': [SKIP],
+  'regress/regress-6288': [SKIP],
+  'tzoffset-transition-apia': [SKIP],
+  'tzoffset-transition-lord-howe': [SKIP],
+  'tzoffset-transition-moscow': [SKIP],
+  'tzoffset-transition-new-york': [SKIP],
+  'tzoffset-transition-new-york-noi18n': [SKIP],
+  'tzoffset-seoul': [SKIP],
+  'tzoffset-seoul-noi18n': [SKIP],
+}],  # 'system == windows'
+
+##############################################################################
+['system == android', {
+  # Tests consistently failing on Android.
+  # Unable to change locale on Android:
+  'icu-date-to-string': [FAIL],
+  'regress/regress-6288': [FAIL],
+  # OOM:
+  'regress/regress-748069': [FAIL],
+  'regress/regress-752764': [FAIL],
+  'regress/regress-779407': [FAIL],
+  # Flaky OOM:
+  'regress/regress-852258': [SKIP],
+}],  # 'system == android'
+
+##############################################################################
+['system == macos', {
+  # BUG(v8:5333)
+  'big-object-literal': [SKIP],
+}],  # 'system == macos'
+
+##############################################################################
+['isolates', {
+  # Slow tests.
+  'es6/typedarray-of': [PASS, SLOW],
+  'regress/regress-crbug-854299': [PASS, SLOW],
+}],  # 'isolates'
+
+##############################################################################
+['deopt_fuzzer == True', {
+
+  # Skip tests that are not suitable for deoptimization fuzzing.
+  'never-optimize': [SKIP],
+  'readonly': [SKIP],
+  'array-feedback': [SKIP],
+  'deopt-recursive-eager-once': [SKIP],
+  'deopt-recursive-lazy-once': [SKIP],
+  'deopt-recursive-soft-once': [SKIP],
+  'code-coverage-block-opt': [SKIP],
+
+  # Bounds check triggers forced deopt for array constructors.
+  'array-constructor-feedback': [SKIP],
+
+  # Deopting uses just enough memory to make this one OOM.
+  'regress/regress-3976': [SKIP],
+
+  # Forced optimisation path tests.
+  'shared-function-tier-up-turbo': [SKIP],
+
+  # Fails deopt_fuzzer due to --deopt_every_n_times
+  'es6/array-iterator-turbo': [SKIP]
+}],  # 'deopt_fuzzer == True'
+
+##############################################################################
+['gc_fuzzer', {
+  'regress/regress-336820': [SKIP],
+  'regress/regress-748069': [SKIP],
+  'regress/regress-778668': [SKIP],
+  'ignition/regress-672027': [PASS, ['tsan', SKIP]],
+  'string-replace-gc': [PASS, SLOW, ['mode == debug', SKIP]],
+
+  # Unsuitable for GC fuzzing because coverage information is lost on GC.
+  'code-coverage-ad-hoc': [SKIP],
+  'code-coverage-precise': [SKIP],
+
+  # Passes incompatible arguments.
+  'd8/d8-arguments': [SKIP],
+
+  # Fails allocation on tsan.
+  'es6/classes': [PASS, ['tsan', SKIP]],
+
+  # Tests that fail some assertions due to checking internal state sensitive
+  # to GC. We mark PASS,FAIL to not skip those tests on the endurance fuzzer.
+  'array-literal-feedback': [PASS, FAIL],
+  'compiler/dataview-neutered': [PASS, FAIL],
+  'compiler/native-context-specialization-hole-check': [PASS, FAIL],
+  'elements-transition-hoisting': [PASS, FAIL],
+  'es6/collections-constructor-custom-iterator': [PASS, FAIL],
+  'ignition/throw-if-not-hole': [PASS, FAIL],
+  'keyed-load-with-symbol-key': [PASS, FAIL],
+  'object-seal': [PASS, FAIL],
+  'regress/regress-3709': [PASS, FAIL],
+  'regress/regress-385565': [PASS, FAIL],
+  'regress/regress-6948': [PASS, FAIL],
+  'regress/regress-7014-1': [PASS, FAIL],
+  'regress/regress-7014-2': [PASS, FAIL],
+  'regress/regress-7510': [PASS, FAIL],
+  'regress/regress-crbug-882233-2': [PASS, FAIL],
+  'regress/regress-trap-allocation-memento': [PASS, FAIL],
+  'regress/regress-unlink-closures-on-deopt': [PASS, FAIL],
+  'shared-function-tier-up-turbo': [PASS, FAIL],
+}],  # 'gc_fuzzer'
+
+##############################################################################
+['endurance_fuzzer', {
+  # BUG(v8:7400).
+  'wasm/lazy-compilation': [SKIP],
+
+  # BUG(v8:7429).
+  'regress/regress-599414-array-concat-fast-path': [SKIP],
+
+  # Often crashes due to memory consumption.
+  'regress/regress-655573': [SKIP],
+
+  # TSAN allocation failures.
+  'deep-recursion': [PASS, ['tsan', SKIP]],
+  'regress/regress-430201b': [PASS, ['tsan', SKIP]],
+  'regress/regress-crbug-493779': [PASS, ['tsan', SKIP]],
+  'regress/wasm/regress-763439': [PASS, ['tsan', SKIP]],
+}],  # 'endurance_fuzzer'
+
+##############################################################################
+['predictable == True', {
+
+  # Skip tests that are known to be non-deterministic.
+  'd8/d8-worker-sharedarraybuffer': [SKIP],
+  'd8/d8-os': [SKIP],
+  'harmony/futex': [SKIP],
+
+  # BUG(v8:7166).
+  'd8/enable-tracing': [SKIP],
+  # Relies on async compilation which requires background tasks.
+  'wasm/streaming-error-position': [SKIP],
+  # Intentionally non-deterministic using shared arraybuffers.
+  'wasm/atomics-stress': [SKIP],
+  'wasm/atomics64-stress': [SKIP],
+  'wasm/futex': [SKIP],
+}],  # 'predictable == True'
+
+##############################################################################
+['simulator_run and (arch == ppc or arch == ppc64 or arch == s390 or arch == s390x)', {
+
+  # take too long with the simulator.
+  'regress/regress-1132': [SKIP],
+  'regress/regress-740784': [SKIP],
+  'regress/regress-crbug-482998': [PASS, SLOW],
+  'regress/regress-91008': [PASS, SLOW],
+  'harmony/regexp-property-lu-ui': [PASS, SLOW],
+  'whitespaces': [PASS, SLOW],
+  'wasm/atomics-stress': [SKIP],
+  'wasm/atomics64-stress': [SKIP],
+}],  # 'simulator_run and (arch == ppc or arch == ppc64 or arch == s390 or arch == s390x)'
+
+##############################################################################
+['arch == ppc64', {
+
+  # stack overflow
+  'big-array-literal': [SKIP],
+  'regress/regress-353551': [SKIP],
+}],  # 'arch == ppc64'
+
+##############################################################################
+['arch == ppc64 or arch == ppc or arch == s390 or arch == s390x', {
+
+  # TODO(ppc/s390): fix constant pool issue and implement tagging for reloc
+  'wasm/compiled-module-serialization': [SKIP],
+  'regress/wasm/regress-808980': [SKIP],
+  'regress/wasm/regress-808848': [SKIP],
+}],  # 'arch == ppc64 or arch == ppc or arch == s390 or arch == s390x'
+
+##############################################################################
+['variant == stress', {
+  # Slow tests.
+  'array-natives-elements': [SKIP],
+  'big-object-literal': [SKIP],
+  'es6/array-iterator-turbo': [SKIP],
+  'ignition/regress-599001-verifyheap': [SKIP],
+  'unicode-test': [SKIP],
+
+  # Flaky crash on Odroid devices: https://crbug.com/v8/7678
+  'regress/regress-336820': [PASS, ['arch == arm and not simulator_run', SKIP]],
+
+  # Too slow for TSAN in stress mode.
+  'es6/classes': [PASS, ['tsan', SKIP]],
+  'regress/regress-1122': [PASS, ['tsan', SKIP]],
+
+  # Too slow with gc_stress on arm64.
+  'messages': [PASS, ['gc_stress and arch == arm64', SKIP]],
+
+  # Slow on arm64 simulator: https://crbug.com/v8/7783
+  'string-replace-gc': [PASS, ['arch == arm64 and simulator_run', SKIP]],
+
+  # Too memory hungry on Odroid devices.
+  'regress/regress-678917': [PASS, ['arch == arm and not simulator_run', SKIP]],
+}],  # variant == stress
+
+##############################################################################
+['variant == stress and (arch == arm or arch == arm64) and simulator_run', {
+  # Slow tests: https://crbug.com/v8/7783
+  'generated-transition-stub': [SKIP],
+  'regress/regress-336820': [SKIP],
+  'wasm/grow-memory': [SKIP],
+}],  # variant == stress and (arch == arm or arch == arm64) and simulator_run
+
+##############################################################################
+['variant == nooptimization and (arch == arm or arch == arm64) and simulator_run', {
+  # Slow tests: https://crbug.com/v8/7783
+  'md5': [SKIP],
+  'packed-elements': [SKIP],
+  'regress/regress-crbug-319860': [SKIP],
+  'wasm/asm-wasm-f32': [SKIP],
+  'wasm/asm-wasm-f64': [SKIP],
+  'wasm/grow-memory': [SKIP],
+}],  # variant == nooptimization and (arch == arm or arch == arm64) and simulator_run
+
+##############################################################################
+['(arch == arm or arch == arm64)', {
+  # Flaky tests: https://crbug.com/v8/8090
+  'regress/regress-752764': [SKIP],
+}],  # (arch == arm or arch == arm64)
+
+##############################################################################
+['gcov_coverage', {
+  # Tests taking too long.
+  'array-functions-prototype-misc': [SKIP],
+
+  # Stack overflow.
+  'big-array-literal': [SKIP],
+}],  # 'gcov_coverage'
+
+##############################################################################
+['variant == no_wasm_traps', {
+  # Skip stuff uninteresting for wasm traps
+  'bugs/*': [SKIP],
+  'compiler/*': [SKIP],
+  'es6/*': [SKIP],
+  'es7/*': [SKIP],
+  'es8/*': [SKIP],
+  'harmony/*': [SKIP],
+  'ignition/*': [SKIP],
+  'lithium/*': [SKIP],
+  'third_party/*': [SKIP],
+  'tools/*': [SKIP],
+  'apply': [SKIP],
+  'math-*': [SKIP],
+  'unicode-test': [SKIP],
+  'whitespaces': [SKIP],
+}],  # variant == no_wasm_traps
+
+##############################################################################
+['no_harness', {
+    # skip assertion tests since the stack trace is broken if mjsunit is
+    # included in the snapshot
+    'mjsunit-assertion-error' : [SKIP],
+}], # no_harness
+
+##############################################################################
+['arch != x64 or deopt_fuzzer', {
+    # Skip stress-deopt-count tests since it's in x64 only
+    'compiler/stress-deopt-count-*': [SKIP],
+}], # arch != x64 or deopt_fuzzer
+
+##############################################################################
+# Liftoff is currently only sufficiently implemented on x64, ia32, arm64 and
+# arm.
+# TODO(clemensh): Implement on all other platforms (crbug.com/v8/6600).
+['arch != x64 and arch != ia32 and arch != arm64 and arch != arm', {
+  'wasm/liftoff': [SKIP],
+  'wasm/tier-up-testing-flag': [SKIP],
+}], # arch != x64 and arch != ia32 and arch != arm64 and arch != arm
+
+##############################################################################
+['variant == slow_path and gc_stress', {
+  # Slow tests.
+  'regress/regress-crbug-493779': [SKIP],
+  'string-replace-gc': [SKIP],
+}],  # variant == slow_path
+
+##############################################################################
+['arch == x64', {
+  # TODO: Flaky test: crbug.com/v8/7899
+  'wasm/asm-wasm-i32': [SKIP],
+  'wasm/asm-wasm-f64': [SKIP],
+}], # arch == x64
+
+##############################################################################
+['arch in [arm, android_arm, android_ia32, ia32, ppc, s390, s390x, mipsel, mips]', {
+  # TODO(ssauleau): implement BigInt<>Wasm conversion for other arch -
+  # crbug.com/v8/7741
+  'wasm/bigint': [SKIP],
+}], # arch in [arm, android_arm, android_ia32, ia32, ppc, s390, s390x, mipsel, mips]
+
+##############################################################################
+['arch not in [x64, arm, arm64] or system != linux', {
+  # Unwinding info writer is only supported on x64, arm, and arm64 Linux
+  'regress/regress-913844': [SKIP],
+}],
+
 ]
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-3218530.js b/implementation-contributed/v8/mjsunit/regress/regress-3218530.js
index 247f3dfe67..54c66dfded 100644
--- a/implementation-contributed/v8/mjsunit/regress/regress-3218530.js
+++ b/implementation-contributed/v8/mjsunit/regress/regress-3218530.js
@@ -33,7 +33,7 @@ var p = "floor";
 
 function test() {
   var bignumber = 31363200000;
-  assertDoesNotThrow(assertEquals(m[p](Math.round(bignumber/864E5)/7)+1, 52));
+  assertEquals(m[p](Math.round(bignumber/864E5)/7)+1, 52);
 }
 
 test();
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-3255.js b/implementation-contributed/v8/mjsunit/regress/regress-3255.js
index 0c5ee4ff00..3526d600c9 100644
--- a/implementation-contributed/v8/mjsunit/regress/regress-3255.js
+++ b/implementation-contributed/v8/mjsunit/regress/regress-3255.js
@@ -16,4 +16,4 @@ f(str, 0);
 f(str, 0);
 
 // This is just to trigger elements validation, object already broken.
-%SetKeyedProperty(str, 1, 'y', 0);
+%SetKeyedProperty(str, 1, 'y');
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-336820.js b/implementation-contributed/v8/mjsunit/regress/regress-336820.js
index 7423610934..660a8fc314 100644
--- a/implementation-contributed/v8/mjsunit/regress/regress-336820.js
+++ b/implementation-contributed/v8/mjsunit/regress/regress-336820.js
@@ -28,11 +28,10 @@
 // Flags: --max-old-space-size=1600
 
 assertThrows((function() {
-  s = "Hello World!\n";
-  while (true) {
-    x = new Array();
-    x[0] = s;
-    x[1000] = s;
-    x[10000] = s;
-    s = x.join("::");
-  }}), RangeError);
+  let str = "a".repeat(1e7);
+  let arr = new Array(2000);
+  for (let i = 0; i < 200; ++i) {
+    arr[i*10] = str;
+  }
+  let res = arr.join(':');
+}), RangeError);
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-5888.js b/implementation-contributed/v8/mjsunit/regress/regress-5888.js
index 0725ac4285..6481c79338 100644
--- a/implementation-contributed/v8/mjsunit/regress/regress-5888.js
+++ b/implementation-contributed/v8/mjsunit/regress/regress-5888.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-5911.js b/implementation-contributed/v8/mjsunit/regress/regress-5911.js
index 0175fd3e2c..9d6d4ae5b8 100644
--- a/implementation-contributed/v8/mjsunit/regress/regress-5911.js
+++ b/implementation-contributed/v8/mjsunit/regress/regress-5911.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-6711.js b/implementation-contributed/v8/mjsunit/regress/regress-6711.js
new file mode 100644
index 0000000000..c1b61c72a1
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/regress/regress-6711.js
@@ -0,0 +1,21 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// ensure `delete this` throws before `super` is called.
+assertThrows(()=>{
+  new class extends Object {
+    constructor() {
+      delete this;
+      super();
+    }
+  }
+}, ReferenceError);
+
+// ensure `delete this` doesn't throw after `super` is called.
+new class extends Object {
+  constructor() {
+    super();
+    delete this;
+  }
+}
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-687.js b/implementation-contributed/v8/mjsunit/regress/regress-687.js
index a917a447f2..9dffcc1a9e 100644
--- a/implementation-contributed/v8/mjsunit/regress/regress-687.js
+++ b/implementation-contributed/v8/mjsunit/regress/regress-687.js
@@ -29,9 +29,8 @@
 // update a accessor property to a data property using Object.defineProperty.
 
 var obj = { get value() {}, set value (v) { throw "Error";} };
-assertDoesNotThrow(
-    Object.defineProperty(obj, "value",
-                          { value: 5, writable:true, configurable: true }));
+Object.defineProperty(obj, "value",
+                      { value: 5, writable:true, configurable: true });
 var desc = Object.getOwnPropertyDescriptor(obj, "value");
 assertEquals(obj.value, 5);
 assertTrue(desc.configurable);
@@ -49,7 +48,7 @@ var proto = {
 var create = Object.create(proto);
 
 assertEquals(create.value, undefined);
-assertDoesNotThrow(create.value = 4);
+create.value = 4;
 assertEquals(create.value, 4);
 
 // These tests where provided in bug 959, but are all related to the this issue.
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-813440.js b/implementation-contributed/v8/mjsunit/regress/regress-813440.js
index 8fcb695f5a..f4df95daae 100644
--- a/implementation-contributed/v8/mjsunit/regress/regress-813440.js
+++ b/implementation-contributed/v8/mjsunit/regress/regress-813440.js
@@ -4,7 +4,6 @@
 
 // Flags: --invoke-weak-callbacks --omit-quit --expose-wasm --allow-natives-syntax
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-863810.js b/implementation-contributed/v8/mjsunit/regress/regress-863810.js
index 0ee1330310..3bec6f5ae9 100644
--- a/implementation-contributed/v8/mjsunit/regress/regress-863810.js
+++ b/implementation-contributed/v8/mjsunit/regress/regress-863810.js
@@ -4,7 +4,6 @@
 
 // Flags: --no-liftoff --no-wasm-tier-up --no-future --debug-code
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-8708.js b/implementation-contributed/v8/mjsunit/regress/regress-8708.js
new file mode 100644
index 0000000000..4faff3324c
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/regress/regress-8708.js
@@ -0,0 +1,10 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --stack-size=100
+
+let array = new Array(1);
+array.splice(1, 0, array);
+
+assertThrows(() => array.flat(Infinity), RangeError);
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-923723.js b/implementation-contributed/v8/mjsunit/regress/regress-923723.js
new file mode 100644
index 0000000000..5a838e558f
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/regress/regress-923723.js
@@ -0,0 +1,14 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --stack-size=50
+
+function __f_3() {
+  try {
+    __f_3();
+  } catch(e) {
+    eval("let fun = ({a} = {a: 30}) => {");
+  }
+}
+assertThrows(__f_3);
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-926036.js b/implementation-contributed/v8/mjsunit/regress/regress-926036.js
new file mode 100644
index 0000000000..3c8f49c956
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/regress/regress-926036.js
@@ -0,0 +1,5 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+assertThrows("async() => { for await (var a ;;) {} }", SyntaxError);
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-crbug-715455.js b/implementation-contributed/v8/mjsunit/regress/regress-crbug-715455.js
index 21ec165683..87b240227d 100644
--- a/implementation-contributed/v8/mjsunit/regress/regress-crbug-715455.js
+++ b/implementation-contributed/v8/mjsunit/regress/regress-crbug-715455.js
@@ -20,6 +20,6 @@ for (var i = 0; i < test_set.length; ++i) {
   src = src.replace(/MODULE/g, "Module" + i);
   src = src.replace(/LIMIT/g, test_set[i]);
   var module = eval("(" + src + ")");
-  assertDoesNotThrow(module(this).f());
+  module(this).f();
   assertFalse(%IsAsmWasmCode(module));
 }
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-crbug-772056.js b/implementation-contributed/v8/mjsunit/regress/regress-crbug-772056.js
index 380bae356d..d9fb4d51d2 100644
--- a/implementation-contributed/v8/mjsunit/regress/regress-crbug-772056.js
+++ b/implementation-contributed/v8/mjsunit/regress/regress-crbug-772056.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 var builder = new WasmModuleBuilder();
@@ -14,4 +13,4 @@ let table = new WebAssembly.Table({element: "anyfunc",
   initial: 1, maximum:1000000});
 let instance = new WebAssembly.Instance(module, {x: {table:table}});
 
-assertThrows(() => table.grow(Infinity), RangeError);
+assertThrows(() => table.grow(Infinity), TypeError);
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-crbug-923264.js b/implementation-contributed/v8/mjsunit/regress/regress-crbug-923264.js
new file mode 100644
index 0000000000..e8c0d43022
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/regress/regress-crbug-923264.js
@@ -0,0 +1,27 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --verify-heap --expose-gc
+
+let paramName = '';
+for (let i=0; i < 2**10; i++) {
+  paramName += 'a';
+}
+
+let params = '';
+for (let i = 0; i < 2**10; i++) {
+  params += paramName + i + ',';
+}
+
+let fn = eval(`(
+  class A {
+    constructor (${params}) {
+      function lazy() {
+        return function lazier() { return ${paramName+1} }
+      };
+      return lazy;
+    }
+})`);
+
+gc()
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-crbug-923265.js b/implementation-contributed/v8/mjsunit/regress/regress-crbug-923265.js
new file mode 100644
index 0000000000..8e6125b34b
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/regress/regress-crbug-923265.js
@@ -0,0 +1,9 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+let a = {0: 5, 1: 4, 2: 3, length: 2};
+Object.freeze(a);
+
+assertThrows(() => Array.prototype.sort.call(a));
+assertPropertiesEqual({0: 5, 1: 4, 2: 3, length: 2}, a);
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-crbug-923705.js b/implementation-contributed/v8/mjsunit/regress/regress-crbug-923705.js
new file mode 100644
index 0000000000..9cdb98b15b
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/regress/regress-crbug-923705.js
@@ -0,0 +1,15 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --verify-heap
+
+function __f_5() {
+  function __f_1() {
+    function __f_0() {
+      ({y = eval()}) => assertEquals()();
+    }
+  }
+}
+
+__f_5();
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-crbug-926819.js b/implementation-contributed/v8/mjsunit/regress/regress-crbug-926819.js
new file mode 100644
index 0000000000..060c72f60e
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/regress/regress-crbug-926819.js
@@ -0,0 +1,5 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+assertThrows("a(function(){{let f;function f}})", SyntaxError);
diff --git a/implementation-contributed/v8/mjsunit/regress/regress-crbug-926856.js b/implementation-contributed/v8/mjsunit/regress/regress-crbug-926856.js
new file mode 100644
index 0000000000..a3fa934483
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/regress/regress-crbug-926856.js
@@ -0,0 +1,18 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Need a fast array with enough elements to surpass
+// kMaxRegularHeapObjectSize.
+var size = 63392;
+var a = [];
+function build() {
+  for (let i = 0; i < size; i++) {
+    a.push(i);
+  }
+}
+
+build();
+
+function c(v) { return v + 0.5; }
+a.map(c);
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/loop-stack-check.js b/implementation-contributed/v8/mjsunit/regress/wasm/loop-stack-check.js
index a76ad017d9..b1e92fa4ec 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/loop-stack-check.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/loop-stack-check.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-02256.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-02256.js
index d1dae276d3..791d2a1d2d 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-02256.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-02256.js
@@ -264,7 +264,6 @@ var __v_11 = this;
 var __v_12 = {};
 var __v_13 = {};
 try {
-    load("test/mjsunit/wasm/wasm-constants.js");
     load("test/mjsunit/wasm/wasm-module-__v_1.js");
     __v_2 = 0x10000;
 } catch (e) {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-5531.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-5531.js
index 1363f96264..cea547d09c 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-5531.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-5531.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-5800.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-5800.js
index 2e56da853d..77c436119c 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-5800.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-5800.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function AddTest() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-5860.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-5860.js
index b193323dd1..961e52d2dc 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-5860.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-5860.js
@@ -4,7 +4,6 @@
 //
 // Flags: --expose-wasm
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 let module1 = (() => {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-5884.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-5884.js
index 8677f105ee..c6013d3f86 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-5884.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-5884.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-6054.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-6054.js
index 7b309b6f82..3afb371131 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-6054.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-6054.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-6164.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-6164.js
index 3035ea5249..ed728f5acc 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-6164.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-6164.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-644682.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-644682.js
index b58c0d9b10..a48e5aeef0 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-644682.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-644682.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-648079.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-648079.js
index acc6146ef5..fbb5414480 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-648079.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-648079.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 // Non-standard opcodes.
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-651961.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-651961.js
index bf08200d30..f42f431703 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-651961.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-651961.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-654377.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-654377.js
index 871da72114..455139f0bb 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-654377.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-654377.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-663994.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-663994.js
index da3d7c7771..9643a86acb 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-663994.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-663994.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-667745.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-667745.js
index 68c880303b..cae5122ca5 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-667745.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-667745.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-684858.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-684858.js
index bfef7fcc8e..1ac3cc6f2a 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-684858.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-684858.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var name = 'regression_684858';
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-688876.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-688876.js
index 02932b4812..5e142b3417 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-688876.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-688876.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-689450.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-689450.js
index 9a4989c633..bcd25387b4 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-689450.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-689450.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-6931.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-6931.js
index 364e95a680..5edf25761f 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-6931.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-6931.js
@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-699485.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-699485.js
index a44b14b031..8a70afa591 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-699485.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-699485.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-702460.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-702460.js
index 44e60330b4..21a84bcf28 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-702460.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-702460.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 // Non-standard opcodes.
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7033.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7033.js
index 17d79c896f..58dff5e2f9 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7033.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7033.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7035.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7035.js
index cd69c7d1b4..73485494b3 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7035.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7035.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7049.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7049.js
index b9ad1a0be4..6d2cd351fb 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7049.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7049.js
@@ -4,7 +4,6 @@
 
 // Flags: --allow-natives-syntax --expose-gc
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 // Build two instances, instance 2 is interpreted, and calls instance 1 (via
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-708714.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-708714.js
index 10cd67ad8d..dc90a0aba3 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-708714.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-708714.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-709684.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-709684.js
index 1ca0cb63fd..a6e03e0a0b 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-709684.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-709684.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm --allow-natives-syntax
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 let importingModuleBinary1 = (() => {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-710844.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-710844.js
index 20c8154e4a..3bafe41c0f 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-710844.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-710844.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-711203.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-711203.js
index 46f274a8b0..beca86d378 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-711203.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-711203.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-715216b.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-715216b.js
index 0954f807dd..85e93e07c9 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-715216b.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-715216b.js
@@ -4,7 +4,6 @@
 
 // Flags: --wasm-interpret-all --wasm-lazy-compilation
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-722445.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-722445.js
index f6a96dc60d..5868d76190 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-722445.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-722445.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-724846.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-724846.js
index 628d58f294..b215b6021a 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-724846.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-724846.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 // Flags: --wasm-max-mem-pages=49152
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-724851.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-724851.js
index 18834795d2..5c4c421a1c 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-724851.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-724851.js
@@ -4,7 +4,6 @@
 
 // Flags: --wasm-lazy-compilation
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 let builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-724972.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-724972.js
index 2af403ce20..cbe5d35d54 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-724972.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-724972.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-727222.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-727222.js
index 6b3f2faf5f..3096334096 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-727222.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-727222.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-727560.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-727560.js
index f92d879a2e..e9ed441860 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-727560.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-727560.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-729991.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-729991.js
index 85a9ae7231..8cabd515b3 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-729991.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-729991.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 let builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-734246.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-734246.js
index 57f98949f8..b861141db7 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-734246.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-734246.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 let builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-734345.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-734345.js
index f55a06288e..d7486d2d1e 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-734345.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-734345.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-gc
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 builder1 = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7353.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7353.js
index 748c74139f..81f45fe6a5 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7353.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7353.js
@@ -4,7 +4,6 @@
 
 // Flags: --wasm-lazy-compilation
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7364.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7364.js
index 8e66295b70..f508585ebb 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7364.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7364.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const exportingModuleBinary = (() => {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-736584.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-736584.js
index 033732f368..0e027f3a57 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-736584.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-736584.js
@@ -4,7 +4,6 @@
 
 // Flags: --wasm-lazy-compilation
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 let mem = new WebAssembly.Memory({initial: 0});
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7366.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7366.js
index 41f758efb1..b5cae8daa4 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7366.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7366.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-737069.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-737069.js
index c68d10f06d..e4c4fae895 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-737069.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-737069.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 let binary = new Binary;
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-739768.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-739768.js
index 52985c3297..a191c828d6 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-739768.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-739768.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 // Flags: --wasm-lazy-compilation
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7422.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7422.js
index 87896b4c35..71e1eb89bd 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7422.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7422.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7499.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7499.js
index 71f246decf..74e4d53a17 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7499.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7499.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7508.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7508.js
index 7c07d2d7e3..10ce500a44 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7508.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7508.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-752423.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-752423.js
index 15ee9a6c34..938ecbf252 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-752423.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-752423.js
@@ -6,7 +6,6 @@
 
 'use strict';
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7565.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7565.js
index 055bfc0c59..c9d4e2ca88 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7565.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7565.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-757217.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-757217.js
index 218b090c45..28e554b87a 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-757217.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-757217.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 let builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7579.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7579.js
index 40cf12317f..876a76cad9 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7579.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7579.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7582.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7582.js
index 476a0e18e8..d8b5e9d7fc 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7582.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7582.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-763439.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-763439.js
index 1f90e0a017..ef84b97859 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-763439.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-763439.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-763697.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-763697.js
index faf74e1cff..c831a55fba 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-763697.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-763697.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm --no-experimental-wasm-simd
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 let builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-766003.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-766003.js
index d8a1ea1ebf..3aaff40636 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-766003.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-766003.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm --wasm-interpret-all
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
  __v_6 = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-769637.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-769637.js
index c2e783014a..71aaa45bfd 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-769637.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-769637.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 let builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-771243.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-771243.js
index e1581fcdd8..81b9e8f2a9 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-771243.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-771243.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm --wasm-interpret-all
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 assertThrows(() => {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-772332.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-772332.js
index 56e6f2ceb8..e8547c8175 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-772332.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-772332.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm --wasm-interpret-all
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 assertThrows(() => {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-775366.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-775366.js
index e8db923896..69a1f68dc0 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-775366.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-775366.js
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
+load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function BadTypeSection() {
   var data = bytes(
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7785.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7785.js
index 12d7e6b5da..72638b1685 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7785.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7785.js
@@ -4,7 +4,6 @@
 
 // Flags: --allow-natives-syntax --experimental-wasm-anyref
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function testAnyRefNull() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-778917.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-778917.js
index 083f1d12e3..c7eb033d95 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-778917.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-778917.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm --wasm-interpret-all
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-782280.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-782280.js
index a94f061c2b..008ab16159 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-782280.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-782280.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-784050.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-784050.js
index 8f1a79002c..acf4539aee 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-784050.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-784050.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7914.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7914.js
index ede4668d08..48f8b902f0 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-7914.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-7914.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-791810.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-791810.js
index cd6c4e2728..73b47bdd78 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-791810.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-791810.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-793551.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-793551.js
index 8aa0241923..657b2c0013 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-793551.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-793551.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-797846.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-797846.js
index 6a4fd5c5f7..1470de4fc6 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-797846.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-797846.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 // We need a module with one valid function.
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-800756.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-800756.js
index 2d29997cef..76afc88d8f 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-800756.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-800756.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-801785.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-801785.js
index 1870d7e8f1..105fd4bc38 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-801785.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-801785.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 // Flags: --print-wasm-code
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-801850.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-801850.js
index b56af694a9..0e0f5c249c 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-801850.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-801850.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-802244.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-802244.js
index 0b8decb637..aeaf850365 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-802244.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-802244.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-803427.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-803427.js
index d3ab31b4c9..26b1413c3b 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-803427.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-803427.js
@@ -4,7 +4,6 @@
 
 // Flags: --wasm-lazy-compilation
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-803788.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-803788.js
index e7fa3aaa8f..17325538f1 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-803788.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-803788.js
@@ -4,7 +4,6 @@
 
 // Flags: --wasm-lazy-compilation
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-8059.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-8059.js
index c30ed152f8..78ee6bd1d2 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-8059.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-8059.js
@@ -4,7 +4,6 @@
 
 // Flags: --no-wasm-disable-structured-cloning
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function TestPostModule() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-808012.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-808012.js
index ae613ceb54..a54b88a5e1 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-808012.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-808012.js
@@ -4,7 +4,6 @@
 
 // Flags: --wasm-lazy-compilation
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-808848.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-808848.js
index bcf8469a14..57920de09d 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-808848.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-808848.js
@@ -4,7 +4,6 @@
 
 // Flags: --allow-natives-syntax
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 // The number of locals must be greater than the constant defined here:
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-808980.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-808980.js
index ecf6476c37..d78c07f36c 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-808980.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-808980.js
@@ -4,7 +4,6 @@
 
 // Flags: --allow-natives-syntax --throws
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 let kTableSize = 3;
 
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-8094.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-8094.js
index a35d583a4a..dc78366ed8 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-8094.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-8094.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm --experimental-wasm-eh
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 // Instantiate a throwing module.
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-8095.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-8095.js
index 66ffc0d4b7..7d21932ec4 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-8095.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-8095.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm --experimental-wasm-eh
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 // Prepare a special error object to throw.
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-812005.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-812005.js
index 979b769bbc..ba49987de5 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-812005.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-812005.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-817380.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-817380.js
index 2cf50892fc..5b3281a150 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-817380.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-817380.js
@@ -4,7 +4,6 @@
 
 // Flags: --wasm-lazy-compilation
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder1 = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-819869.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-819869.js
index f2606fb610..a32928ab0c 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-819869.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-819869.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-820802.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-820802.js
index 224a2260f5..214e71819f 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-820802.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-820802.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-824681.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-824681.js
index 18ca3d0b5d..9d712e6ddb 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-824681.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-824681.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 let chain = Promise.resolve();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-825087a.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-825087a.js
index a1f9a1bea8..9a986d0839 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-825087a.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-825087a.js
@@ -5,5 +5,5 @@
 PAGES = 10;
 memory = new WebAssembly.Memory({initial: PAGES});
 buffer = memory.buffer;
-memory.grow();
+memory.grow(0);
 WebAssembly.validate(buffer);
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-825087b.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-825087b.js
index 699549d429..266fd53219 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-825087b.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-825087b.js
@@ -6,5 +6,5 @@ PAGES = 10;
 memory = new WebAssembly.Memory({initial: PAGES});
 buffer = memory.buffer;
 buffer = new Uint8Array(buffer);
-memory.grow();
+memory.grow(0);
 WebAssembly.validate(buffer);
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-827806.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-827806.js
index c06e0fae96..8576de2e79 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-827806.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-827806.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 try {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-831463.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-831463.js
index 65d1213dd0..2818ad350b 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-831463.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-831463.js
@@ -4,7 +4,6 @@
 
 // Flags: --wasm-interpret-all
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-834619.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-834619.js
index 378e38e03c..145f415221 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-834619.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-834619.js
@@ -4,7 +4,6 @@
 
 // Flags: --wasm-lazy-compilation
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function ExportedFunctionsImportedOrder() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-834624.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-834624.js
index 9161f098e0..45af23cde2 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-834624.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-834624.js
@@ -4,7 +4,6 @@
 
 // Flags: --wasm-interpret-all
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 let instance;
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-834693.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-834693.js
index dac0e8578d..ad51b2a400 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-834693.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-834693.js
@@ -4,7 +4,6 @@
 
 // flags: --wasm-lazy-compilation
 
-load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 var module = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-836141.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-836141.js
index b37dbea628..5ac58042e4 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-836141.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-836141.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-837417.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-837417.js
index 9dcc299ecf..ef1d3cfaf6 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-837417.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-837417.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-840757.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-840757.js
index 0887401336..ad1cf9f64f 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-840757.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-840757.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 // Also enable predictable mode. Otherwise, concurrent recompilation will be
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-842501.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-842501.js
index 83f5c9d4b8..d54507cc59 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-842501.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-842501.js
@@ -4,7 +4,6 @@
 
 // Flags: --no-wasm-trap-handler
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-843563.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-843563.js
index 8c18cfa7a9..ca22299254 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-843563.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-843563.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-8505.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-8505.js
index ebc97a95b4..0488723e4f 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-8505.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-8505.js
@@ -4,7 +4,6 @@
 
 // Flags: --expose-wasm --wasm-math-intrinsics  --validate-asm --allow-natives-syntax
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 function verbose(args) {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-8533.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-8533.js
index 5d782b747c..da5f44925a 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-8533.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-8533.js
@@ -4,7 +4,6 @@
 
 // Flags: --wasm-shared-engine --no-wasm-disable-structured-cloning --allow-natives-syntax --experimental-wasm-threads
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-854011.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-854011.js
index 11863368f3..b0356a873f 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-854011.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-854011.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-854050.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-854050.js
index e2146ca365..d6c4829acd 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-854050.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-854050.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-864509.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-864509.js
index 822c06750a..19e3bfcfb8 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-864509.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-864509.js
@@ -4,7 +4,6 @@
 
 // Flags: --liftoff --no-wasm-tier-up --no-future --wasm-tier-mask-for-testing=2
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-875556.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-875556.js
index e1ea426f87..cc8bc5cc3e 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-875556.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-875556.js
@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 // Flags: --expose-wasm --experimental-wasm-mv
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 (function() {
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-894307.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-894307.js
index 5aef9eba86..f40388fcb4 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-894307.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-894307.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-894374.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-894374.js
index fb9cb3b4fe..02be0088cf 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-894374.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-894374.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-910824.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-910824.js
index 7c8f154496..b795425b1f 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-910824.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-910824.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-913804.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-913804.js
index c12013c9f8..e9d4026308 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-913804.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-913804.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-916869.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-916869.js
index 6acd5d68d7..30bb011364 100644
--- a/implementation-contributed/v8/mjsunit/regress/wasm/regress-916869.js
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-916869.js
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 const builder = new WasmModuleBuilder();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-922670.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-922670.js
new file mode 100644
index 0000000000..2988eddf30
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-922670.js
@@ -0,0 +1,31 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+load('test/mjsunit/wasm/wasm-module-builder.js');
+
+const builder = new WasmModuleBuilder();
+const sig = builder.addType(makeSig([kWasmI32], []));
+builder.addFunction(undefined, sig)
+  .addLocals({i64_count: 1})
+  .addBody([
+    kExprLoop, kWasmI32,
+      kExprGetLocal, 1,
+      kExprI64Const, 1,
+      kExprLoop, kWasmI32,
+        kExprGetLocal, 0,
+        kExprI32Const, 1,
+        kExprI32Const, 1,
+        kExprIf, kWasmI32,
+          kExprI32Const, 1,
+        kExprElse,
+          kExprUnreachable,
+          kExprEnd,
+        kExprSelect,
+        kExprUnreachable,
+        kExprEnd,
+      kExprUnreachable,
+      kExprEnd,
+    kExprUnreachable
+]);
+builder.instantiate();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-922933.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-922933.js
new file mode 100644
index 0000000000..4d44509598
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-922933.js
@@ -0,0 +1,51 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+load('test/mjsunit/wasm/wasm-module-builder.js');
+
+const builder = new WasmModuleBuilder();
+const sig = builder.addType(makeSig([kWasmI64], [kWasmI64]));
+builder.addFunction(undefined, sig)
+  .addLocals({i32_count: 14}).addLocals({i64_count: 17}).addLocals({f32_count: 14})
+  .addBody([
+    kExprBlock, kWasmStmt,
+      kExprBr, 0x00,
+      kExprEnd,
+    kExprBlock, kWasmStmt,
+      kExprI32Const, 0x00,
+      kExprSetLocal, 0x09,
+      kExprI32Const, 0x00,
+      kExprIf, kWasmStmt,
+        kExprBlock, kWasmStmt,
+          kExprI32Const, 0x00,
+          kExprSetLocal, 0x0a,
+          kExprBr, 0x00,
+          kExprEnd,
+        kExprBlock, kWasmStmt,
+          kExprBlock, kWasmStmt,
+            kExprGetLocal, 0x00,
+            kExprSetLocal, 0x12,
+            kExprBr, 0x00,
+            kExprEnd,
+          kExprGetLocal, 0x16,
+          kExprSetLocal, 0x0f,
+          kExprGetLocal, 0x0f,
+          kExprSetLocal, 0x17,
+          kExprGetLocal, 0x0f,
+          kExprSetLocal, 0x18,
+          kExprGetLocal, 0x17,
+          kExprGetLocal, 0x18,
+          kExprI64ShrS,
+          kExprSetLocal, 0x19,
+          kExprUnreachable,
+          kExprEnd,
+        kExprUnreachable,
+      kExprElse,
+        kExprUnreachable,
+        kExprEnd,
+      kExprUnreachable,
+      kExprEnd,
+    kExprUnreachable
+]);
+builder.instantiate();
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-924843.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-924843.js
new file mode 100644
index 0000000000..0549a769fb
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-924843.js
@@ -0,0 +1,16 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+load('test/mjsunit/wasm/wasm-module-builder.js');
+
+const builder = new WasmModuleBuilder();
+const sig = builder.addType(makeSig([kWasmI32, kWasmI32, kWasmI32], [kWasmI32]));
+builder.addFunction(undefined, sig)
+  .addBody([
+    kExprGetLocal, 2,
+    kExprIf, kWasmStmt,
+      kExprBlock, kWasmStmt
+  ]);
+builder.addExport('main', 0);
+assertThrows(() => builder.instantiate(), WebAssembly.CompileError);
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-924905.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-924905.js
new file mode 100644
index 0000000000..9dbdf7e299
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-924905.js
@@ -0,0 +1,17 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+load('test/mjsunit/wasm/wasm-module-builder.js');
+
+let builder = new WasmModuleBuilder();
+builder.addFunction("kaboom", kSig_i_v)
+    .addBody([
+      kExprI32Const, 0,
+      kExprI32Const, 0,
+      kExprI32And,
+      kExprI32Const, 0,
+      kExprI32ShrU,
+    ]).exportFunc();
+let instance = builder.instantiate();
+assertEquals(0, instance.exports.kaboom());
diff --git a/implementation-contributed/v8/mjsunit/regress/wasm/regress-925671.js b/implementation-contributed/v8/mjsunit/regress/wasm/regress-925671.js
new file mode 100644
index 0000000000..c6113c272e
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/regress/wasm/regress-925671.js
@@ -0,0 +1,12 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --wasm-tier-mask-for-testing=1
+
+load('test/mjsunit/wasm/wasm-module-builder.js');
+
+var builder = new WasmModuleBuilder();
+builder.addFunction('f0', kSig_v_v).addBody([]);
+builder.addFunction('f1', kSig_v_v).addBody([]);
+builder.instantiate();
diff --git a/implementation-contributed/v8/mjsunit/tools/compiler-trace-flags.js b/implementation-contributed/v8/mjsunit/tools/compiler-trace-flags.js
index 491aad8c1e..ea6f816f5d 100644
--- a/implementation-contributed/v8/mjsunit/tools/compiler-trace-flags.js
+++ b/implementation-contributed/v8/mjsunit/tools/compiler-trace-flags.js
@@ -6,7 +6,6 @@
 // Flags: --trace-turbo-cfg-file=test/mjsunit/tools/turbo.cfg
 // Flags: --trace-turbo-path=test/mjsunit/tools
 
-load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 // The idea behind this test is to make sure we do not crash when using the
diff --git a/implementation-contributed/v8/mjsunit/ubsan-fuzzerbugs.js b/implementation-contributed/v8/mjsunit/ubsan-fuzzerbugs.js
new file mode 100644
index 0000000000..d2a21288ab
--- /dev/null
+++ b/implementation-contributed/v8/mjsunit/ubsan-fuzzerbugs.js
@@ -0,0 +1,19 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// crbug.com/923466
+__v_5 = [ -1073741825, -2147483648];
+__v_5.sort();
+
+// crbug.com/923642
+new RegExp("(abcd){2148473648,}", "");
+
+// crbug.com/923626
+new Date(2146399200000).toString();
+new Date(2146940400000).toString();
+new Date(2147481600000).toString();
+new Date(2148022800000).toString();
+
+// crbug.com/927212
+assertThrows(() => (2n).toString(-2147483657), RangeError);
diff --git a/implementation-contributed/v8/test262/test262.status b/implementation-contributed/v8/test262/test262.status
index fae6692cb8..34fc0a999e 100644
--- a/implementation-contributed/v8/test262/test262.status
+++ b/implementation-contributed/v8/test262/test262.status
@@ -1290,4 +1290,1330 @@
   'intl402/DateTimeFormat/prototype/resolvedOptions/basic': [SKIP],
 }],  # system == windows
 
+]
+
+    /*
+    ********************************** test262-automation **********************************
+    Summary: The two files have now diverged.
+        File Status: Partially curated & modified.
+        Source Status: Modified since its export.
+        Below is the current and modified source which was exported on Mon Feb 04 2019 19:40:41 GMT+0000 (Coordinated Universal Time)
+    */
+      # Copyright 2011 the V8 project authors. All rights reserved.
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+#       copyright notice, this list of conditions and the following
+#       disclaimer in the documentation and/or other materials provided
+#       with the distribution.
+#     * Neither the name of Google Inc. nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+[
+
+[ALWAYS, {
+  ###################### MISSING ES6 FEATURES #######################
+
+  # https://code.google.com/p/v8/issues/detail?id=4248
+  'language/expressions/compound-assignment/S11.13.2_A5.*': [FAIL],
+  'language/expressions/compound-assignment/S11.13.2_A6.*': [FAIL],
+  'language/expressions/compound-assignment/S11.13.2_A7.10_T4': [FAIL],
+  'language/expressions/compound-assignment/S11.13.2_A7.11_T4': [FAIL],
+  'language/expressions/compound-assignment/S11.13.2_A7.1_T4': [FAIL],
+  'language/expressions/compound-assignment/S11.13.2_A7.2_T4': [FAIL],
+  'language/expressions/compound-assignment/S11.13.2_A7.3_T4': [FAIL],
+  'language/expressions/compound-assignment/S11.13.2_A7.4_T4': [FAIL],
+  'language/expressions/compound-assignment/S11.13.2_A7.5_T4': [FAIL],
+  'language/expressions/compound-assignment/S11.13.2_A7.6_T4': [FAIL],
+  'language/expressions/compound-assignment/S11.13.2_A7.7_T4': [FAIL],
+  'language/expressions/compound-assignment/S11.13.2_A7.8_T4': [FAIL],
+  'language/expressions/compound-assignment/S11.13.2_A7.9_T4': [FAIL],
+  'language/statements/with/unscopables-inc-dec': [FAIL],
+
+  # https://code.google.com/p/v8/issues/detail?id=4249
+  'language/expressions/assignment/S11.13.1_A7_T1': [FAIL],
+  'language/expressions/assignment/S11.13.1_A7_T2': [FAIL],
+  'language/expressions/assignment/S11.13.1_A7_T3': [FAIL],
+  'language/expressions/postfix-increment/S11.3.1_A6_T3': [FAIL],
+  'language/expressions/postfix-decrement/S11.3.2_A6_T3': [FAIL],
+  'language/expressions/prefix-decrement/S11.4.5_A6_T3': [FAIL],
+  'language/expressions/prefix-increment/S11.4.4_A6_T3': [FAIL],
+
+  # https://code.google.com/p/v8/issues/detail?id=4250
+  'language/expressions/assignment/S11.13.1_A5*': [FAIL],
+  'language/expressions/assignment/S11.13.1_A6*': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=4709
+  'built-ins/Promise/reject-function-name': [FAIL],
+  'built-ins/Promise/resolve-function-name': [FAIL],
+  'built-ins/Promise/all/resolve-element-function-name': [FAIL],
+  'built-ins/Promise/executor-function-name': [FAIL],
+  'built-ins/Proxy/revocable/revocation-function-name': [FAIL],
+  'language/expressions/assignment/fn-name-lhs-cover': [FAIL],
+  'language/expressions/assignment/fn-name-lhs-member': [FAIL],
+  'language/expressions/function/name': [FAIL],
+  'language/expressions/generators/name': [FAIL],
+  'intl402/NumberFormat/prototype/format/format-function-name': [FAIL],
+  'intl402/DateTimeFormat/prototype/format/format-function-name': [FAIL],
+  'intl402/Collator/prototype/compare/compare-function-name': [FAIL],
+
+  # https://code.google.com/p/v8/issues/detail?id=4251
+  'language/expressions/postfix-increment/S11.3.1_A5_T1': [FAIL],
+  'language/expressions/postfix-increment/S11.3.1_A5_T2': [FAIL],
+  'language/expressions/postfix-increment/S11.3.1_A5_T3': [FAIL],
+  'language/expressions/postfix-increment/S11.3.1_A5_T4': [FAIL],
+  'language/expressions/postfix-increment/S11.3.1_A5_T5': [FAIL],
+  'language/expressions/postfix-decrement/S11.3.2_A5_*': [FAIL],
+  'language/expressions/prefix-decrement/S11.4.5_A5_*': [FAIL],
+  'language/expressions/prefix-increment/S11.4.4_A5_*': [FAIL],
+  'language/statements/variable/binding-resolution': [FAIL],
+
+  # https://code.google.com/p/v8/issues/detail?id=8771
+  'language/computed-property-names/class/static/method-number': [FAIL],
+  'language/computed-property-names/class/static/method-string': [FAIL],
+  'language/computed-property-names/class/static/method-symbol': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=4895
+  'built-ins/TypedArrayConstructors/internals/DefineOwnProperty/detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/DefineOwnProperty/detached-buffer-realm': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/detached-buffer-realm': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/DefineOwnProperty/tonumber-value-detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/tonumber-value-detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Get/detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Get/BigInt/detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Get/detached-buffer-realm': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Get/BigInt/detached-buffer-realm': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Get/infinity-detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Get/BigInt/infinity-detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/GetOwnProperty/detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/GetOwnProperty/BigInt/detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/GetOwnProperty/detached-buffer-realm': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/GetOwnProperty/BigInt/detached-buffer-realm': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/GetOwnProperty/enumerate-detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/GetOwnProperty/BigInt/enumerate-detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/HasProperty/detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/HasProperty/BigInt/detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/HasProperty/detached-buffer-realm': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/HasProperty/BigInt/detached-buffer-realm': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/HasProperty/infinity-with-detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/HasProperty/BigInt/infinity-with-detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Set/detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Set/BigInt/detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Set/detached-buffer-realm': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Set/BigInt/detached-buffer-realm': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Set/tonumber-value-detached-buffer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Set/BigInt/tonumber-value-detached-buffer': [FAIL],
+  # Some TypedArray methods throw due to the same bug, from Get
+  'built-ins/TypedArray/prototype/every/callbackfn-detachbuffer': [FAIL],
+  'built-ins/TypedArray/prototype/every/BigInt/callbackfn-detachbuffer': [FAIL],
+  'built-ins/TypedArray/prototype/find/predicate-may-detach-buffer': [FAIL],
+  'built-ins/TypedArray/prototype/find/BigInt/predicate-may-detach-buffer': [FAIL],
+  'built-ins/TypedArray/prototype/findIndex/predicate-may-detach-buffer': [FAIL],
+  'built-ins/TypedArray/prototype/findIndex/BigInt/predicate-may-detach-buffer': [FAIL],
+  'built-ins/TypedArray/prototype/forEach/callbackfn-detachbuffer': [FAIL],
+  'built-ins/TypedArray/prototype/forEach/BigInt/callbackfn-detachbuffer': [FAIL],
+  'built-ins/TypedArray/prototype/map/callbackfn-detachbuffer': [FAIL],
+  'built-ins/TypedArray/prototype/map/BigInt/callbackfn-detachbuffer': [FAIL],
+  'built-ins/TypedArray/prototype/reduce/callbackfn-detachbuffer': [FAIL],
+  'built-ins/TypedArray/prototype/reduce/BigInt/callbackfn-detachbuffer': [FAIL],
+  'built-ins/TypedArray/prototype/reduceRight/callbackfn-detachbuffer': [FAIL],
+  'built-ins/TypedArray/prototype/reduceRight/BigInt/callbackfn-detachbuffer': [FAIL],
+  'built-ins/TypedArray/prototype/some/callbackfn-detachbuffer': [FAIL],
+  'built-ins/TypedArray/prototype/some/BigInt/callbackfn-detachbuffer': [FAIL],
+  # DataView functions should also throw on detached buffers
+  'built-ins/ArrayBuffer/prototype/byteLength/detached-buffer': [FAIL],
+  'built-ins/DataView/detached-buffer': [FAIL],
+  'built-ins/DataView/prototype/byteLength/detached-buffer': [FAIL],
+  'built-ins/DataView/prototype/byteOffset/detached-buffer': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=4951
+  'language/expressions/assignment/destructuring/iterator-destructuring-property-reference-target-evaluation-order': [FAIL],
+  'language/expressions/assignment/destructuring/keyed-destructuring-property-reference-target-evaluation-order': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=896
+  'built-ins/RegExp/property-escapes/binary-property-with-value-ASCII_-_F': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/binary-property-with-value-ASCII_-_F-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/binary-property-with-value-ASCII_-_Invalid': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/binary-property-with-value-ASCII_-_Invalid-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/binary-property-with-value-ASCII_-_N': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/binary-property-with-value-ASCII_-_N-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/binary-property-with-value-ASCII_-_No': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/binary-property-with-value-ASCII_-_No-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/binary-property-with-value-ASCII_-_T': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/binary-property-with-value-ASCII_-_T-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/binary-property-with-value-ASCII_-_Y': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/binary-property-with-value-ASCII_-_Y-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/binary-property-with-value-ASCII_-_Yes': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/binary-property-with-value-ASCII_-_Yes-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/character-class-range-end': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/character-class-range-no-dash-end': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/character-class-range-no-dash-start': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/character-class-range-start': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-In-prefix-Block-implicit': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-In-prefix-Block-implicit-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-In-prefix-Script': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-In-prefix-Script-implicit': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-In-prefix-Script-implicit-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-In-prefix-Script-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-Is-prefix-Script': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-Is-prefix-Script-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-circumflex-negation': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-circumflex-negation-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-empty': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-empty-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-invalid': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-invalid-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-no-braces': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-no-braces-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-no-braces-value': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-no-braces-value-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-separator': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-separator-and-value-only': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-separator-and-value-only-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-separator-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-separator-only': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-separator-only-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-unclosed': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-unclosed-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-unopened': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/grammar-extension-unopened-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-01': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-01-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-02': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-02-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-03': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-03-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-04': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-04-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-05': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-05-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-06': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-06-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-07': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-07-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-08': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-08-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-09': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-09-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-10': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-10-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-11': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-11-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-12': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-12-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-13': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-13-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-14': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/loose-matching-14-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-binary-property-without-value-General_Category': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-binary-property-without-value-General_Category-equals': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-binary-property-without-value-General_Category-equals-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-binary-property-without-value-General_Category-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-binary-property-without-value-Script': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-binary-property-without-value-Script-equals': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-binary-property-without-value-Script-equals-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-binary-property-without-value-Script-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-binary-property-without-value-Script_Extensions': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-binary-property-without-value-Script_Extensions-equals': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-binary-property-without-value-Script_Extensions-equals-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-binary-property-without-value-Script_Extensions-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-existent-binary-property': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-existent-binary-property-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-existent-property-and-value': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-existent-property-and-value-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-existent-property-existing-value': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-existent-property-existing-value-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-existent-property-value-General_Category-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-existent-property-value-Script': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-existent-property-value-Script-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-existent-property-value-Script_Extensions': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-existent-property-value-Script_Extensions-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/non-existent-property-value-general-category': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Composition_Exclusion': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Composition_Exclusion-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Expands_On_NFC': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Expands_On_NFC-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Expands_On_NFD': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Expands_On_NFD-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Expands_On_NFKC': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Expands_On_NFKC-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Expands_On_NFKD': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Expands_On_NFKD-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-FC_NFKC_Closure': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-FC_NFKC_Closure-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Full_Composition_Exclusion': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Full_Composition_Exclusion-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Grapheme_Link': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Grapheme_Link-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Hyphen': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Hyphen-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_Alphabetic': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_Alphabetic-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_Default_Ignorable_Code_Point': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_Default_Ignorable_Code_Point-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_Grapheme_Extend': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_Grapheme_Extend-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_ID_Continue': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_ID_Continue-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_ID_Start': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_ID_Start-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_Lowercase': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_Lowercase-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_Math': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_Math-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_Uppercase': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Other_Uppercase-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Prepended_Concatenation_Mark': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-binary-property-Prepended_Concatenation_Mark-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-property-Block-with-value': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-property-Block-with-value-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-property-FC_NFKC_Closure': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-property-FC_NFKC_Closure-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-property-Line_Break': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-property-Line_Break-negated': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-property-Line_Break-with-value': [FAIL_PHASE_ONLY],
+  'built-ins/RegExp/property-escapes/unsupported-property-Line_Break-with-value-negated': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/early-err-pattern': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/invalid-braced-quantifier-exact': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/invalid-braced-quantifier-lower': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/invalid-braced-quantifier-range': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/invalid-optional-lookbehind': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/invalid-optional-negative-lookbehind': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/invalid-range-lookbehind': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/invalid-range-negative-lookbehind': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-dangling-groupname': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-dangling-groupname-2': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-dangling-groupname-2-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-dangling-groupname-3': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-dangling-groupname-3-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-dangling-groupname-4': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-dangling-groupname-4-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-dangling-groupname-5': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-dangling-groupname-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-dangling-groupname-without-group-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-duplicate-groupspecifier': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-duplicate-groupspecifier-2': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-duplicate-groupspecifier-2-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-duplicate-groupspecifier-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-empty-groupspecifier': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-empty-groupspecifier-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-identity-escape-in-capture-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-incomplete-groupname': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-incomplete-groupname-2': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-incomplete-groupname-2-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-incomplete-groupname-3': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-incomplete-groupname-3-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-incomplete-groupname-4': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-incomplete-groupname-5': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-incomplete-groupname-6': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-incomplete-groupname-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-incomplete-groupname-without-group-2-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-incomplete-groupname-without-group-3-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-incomplete-groupname-without-group-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-continue-groupspecifier': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-continue-groupspecifier-4': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-continue-groupspecifier-4-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-start-groupspecifier': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-start-groupspecifier-2': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-start-groupspecifier-2-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-start-groupspecifier-3': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-start-groupspecifier-4': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-start-groupspecifier-4-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-start-groupspecifier-5': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-start-groupspecifier-5-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-start-groupspecifier-6': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-start-groupspecifier-7': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-start-groupspecifier-8': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-start-groupspecifier-8-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-start-groupspecifier-9-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-non-id-start-groupspecifier-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-numeric-groupspecifier': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-numeric-groupspecifier-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-punctuator-starting-groupspecifier': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-punctuator-starting-groupspecifier-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-punctuator-within-groupspecifier': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-punctuator-within-groupspecifier-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-u-escape-in-groupspecifier': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-u-escape-in-groupspecifier-2': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-unterminated-groupspecifier': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/named-groups/invalid-unterminated-groupspecifier-u': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-dec-esc': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-class-escape': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-extended-pattern-char': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-identity-escape': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-legacy-octal-escape': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-non-empty-class-ranges': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-non-empty-class-ranges-no-dash-a': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-non-empty-class-ranges-no-dash-ab': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-non-empty-class-ranges-no-dash-b': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-oob-decimal-escape': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-optional-lookahead': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-optional-lookbehind': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-optional-negative-lookahead': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-optional-negative-lookbehind': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-range-lookahead': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-range-lookbehind': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-range-negative-lookahead': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-invalid-range-negative-lookbehind': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-unicode-esc-bounds': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/u-unicode-esc-non-hex': [FAIL_PHASE_ONLY],
+  'language/literals/regexp/unicode-escape-nls-err': [FAIL_PHASE_ONLY],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=4628
+  'language/eval-code/direct/non-definable-function-with-function': [FAIL],
+  'language/eval-code/direct/non-definable-function-with-variable': [FAIL],
+  'language/eval-code/indirect/non-definable-function-with-function': [FAIL],
+  'language/eval-code/indirect/non-definable-function-with-variable': [FAIL],
+  'language/global-code/script-decl-func-err-non-configurable': [FAIL],
+  'language/global-code/script-decl-var-collision': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=5116
+  'built-ins/TypedArray/prototype/fill/fill-values-conversion-operations-consistent-nan': [PASS, FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=4698
+  'language/expressions/call/tco-call-args': [SKIP],
+  'language/expressions/call/tco-cross-realm-class-construct': [SKIP],
+  'language/expressions/call/tco-cross-realm-class-derived-construct': [SKIP],
+  'language/expressions/call/tco-cross-realm-fun-call': [SKIP],
+  'language/expressions/call/tco-cross-realm-fun-construct': [SKIP],
+  'language/expressions/call/tco-member-args': [SKIP],
+  'language/expressions/call/tco-non-eval-function': [SKIP],
+  'language/expressions/call/tco-non-eval-function-dynamic': [SKIP],
+  'language/expressions/call/tco-non-eval-global': [SKIP],
+  'language/expressions/call/tco-non-eval-with': [SKIP],
+  'language/expressions/comma/tco-final': [SKIP],
+  'language/expressions/conditional/tco-cond': [SKIP],
+  'language/expressions/conditional/tco-pos': [SKIP],
+  'language/expressions/logical-and/tco-right': [SKIP],
+  'language/expressions/logical-or/tco-right': [SKIP],
+  'language/expressions/tagged-template/tco-call': [SKIP],
+  'language/expressions/tagged-template/tco-member': [SKIP],
+  'language/expressions/tco-pos': [SKIP],
+  'language/statements/block/tco-stmt': [SKIP],
+  'language/statements/block/tco-stmt-list': [SKIP],
+  'language/statements/do-while/tco-body': [SKIP],
+  'language/statements/for/tco-const-body': [SKIP],
+  'language/statements/for/tco-let-body': [SKIP],
+  'language/statements/for/tco-lhs-body': [SKIP],
+  'language/statements/for/tco-var-body': [SKIP],
+  'language/statements/if/tco-else-body': [SKIP],
+  'language/statements/if/tco-if-body': [SKIP],
+  'language/statements/labeled/tco': [SKIP],
+  'language/statements/return/tco': [SKIP],
+  'language/statements/switch/tco-case-body': [SKIP],
+  'language/statements/switch/tco-case-body-dflt': [SKIP],
+  'language/statements/switch/tco-dftl-body': [SKIP],
+  'language/statements/try/tco-catch': [SKIP],
+  'language/statements/try/tco-catch-finally': [SKIP],
+  'language/statements/try/tco-finally': [SKIP],
+  'language/statements/while/tco-body': [SKIP],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=5327
+  'built-ins/TypedArrayConstructors/internals/Set/key-is-minus-zero': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Set/BigInt/key-is-minus-zero': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Set/key-is-not-integer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Set/BigInt/key-is-not-integer': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Set/key-is-out-of-bounds': [FAIL],
+  'built-ins/TypedArrayConstructors/internals/Set/BigInt/key-is-out-of-bounds': [FAIL],
+
+  # SharedArrayBuffer tests that require flags
+  'built-ins/SharedArrayBuffer/*': ['--harmony-sharedarraybuffer'],
+  'built-ins/Atomics/*': ['--harmony-sharedarraybuffer'],
+  'built-ins/ArrayBuffer/prototype/byteLength/this-is-sharedarraybuffer': ['--harmony-sharedarraybuffer'],
+  'built-ins/ArrayBuffer/prototype/slice/this-is-sharedarraybuffer': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/buffer-does-not-have-arraybuffer-data-throws-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/buffer-reference-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/byteoffset-is-negative-throws-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/custom-proto-if-not-object-fallbacks-to-default-prototype-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/custom-proto-if-object-is-used-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/defined-bytelength-and-byteoffset-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/defined-byteoffset-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/defined-byteoffset-undefined-bytelength-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/excessive-bytelength-throws-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/excessive-byteoffset-throws-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/instance-extensibility-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/negative-bytelength-throws-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/negative-byteoffset-throws-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/newtarget-undefined-throws-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/proto-from-ctor-realm-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/prototype/buffer/return-buffer-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/prototype/buffer/this-has-no-dataview-internal-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/prototype/byteLength/return-bytelength-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/prototype/byteLength/this-has-no-dataview-internal-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/prototype/byteOffset/return-byteoffset-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/prototype/byteOffset/this-has-no-dataview-internal-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/prototype/getInt32/index-is-out-of-range-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/prototype/getInt32/negative-byteoffset-throws-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/prototype/getInt32/return-abrupt-from-tonumber-byteoffset-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/prototype/getInt32/return-abrupt-from-tonumber-byteoffset-symbol-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/prototype/getInt32/return-value-clean-arraybuffer-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/prototype/getInt32/return-values-custom-offset-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/prototype/getInt32/return-values-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/prototype/getInt32/this-has-no-dataview-internal-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/prototype/getInt32/to-boolean-littleendian-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/return-abrupt-tonumber-bytelength-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/return-abrupt-tonumber-bytelength-symbol-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/return-abrupt-tonumber-byteoffset-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/return-abrupt-tonumber-byteoffset-symbol-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/return-instance-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/toindex-bytelength-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/DataView/toindex-byteoffset-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/TypedArray/prototype/set/typedarray-arg-set-values-diff-buffer-other-type-conversions-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/TypedArray/prototype/set/typedarray-arg-set-values-diff-buffer-other-type-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/TypedArray/prototype/set/typedarray-arg-set-values-diff-buffer-same-type-sab': ['--harmony-sharedarraybuffer'],
+  'built-ins/TypedArray/prototype/set/typedarray-arg-set-values-same-buffer-same-type-sab': ['--harmony-sharedarraybuffer'],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=8100
+  'built-ins/Atomics/notify/bigint/*': [SKIP],
+  'built-ins/Atomics/wait/bigint/*': [SKIP],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=6049
+  'built-ins/Object/internals/DefineOwnProperty/consistent-value-function-caller': [FAIL_SLOPPY],
+  'built-ins/Object/internals/DefineOwnProperty/consistent-value-function-arguments': [FAIL_SLOPPY],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=7184
+  'annexB/language/expressions/yield/star-iterable-return-emulates-undefined-throws-when-called': [FAIL],
+  'annexB/language/statements/for-await-of/iterator-close-return-emulates-undefined-throws-when-called': [FAIL],
+  'annexB/language/statements/for-of/iterator-close-return-emulates-undefined-throws-when-called': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=7468
+  'language/statements/class/elements/privatename-not-valid-earlyerr-script-8': [SKIP],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=5690
+  'language/expressions/call/eval-spread': [FAIL],
+  'language/expressions/call/eval-spread-empty-leading': [FAIL],
+  'language/expressions/call/eval-spread-empty-trailing': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=8664
+  'intl402/Collator/missing-unicode-ext-value-defaults-to-true': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=8717
+  'intl402/Segmenter/constructor/constructor/options-granularity-valid': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=7472
+  'intl402/NumberFormat/currency-digits': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=7483
+  'annexB/built-ins/Function/createdynfn-html-close-comment-params': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=8260
+  'intl402/Locale/constructor-non-iana-canon': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=8261
+  'intl402/Locale/constructor-options-language-valid': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=8262
+  'intl402/Locale/constructor-parse-twice': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=8246
+  'intl402/Locale/constructor-tag': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=8243
+  'intl402/Locale/extensions-private': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=8236
+  'intl402/Locale/likely-subtags': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=8242
+  'intl402/Locale/extensions-grandfathered': [FAIL],
+  'intl402/Locale/getters-grandfathered': [FAIL],
+  'intl402/Locale/likely-subtags-grandfathered': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=7831
+  'language/statements/generators/generator-created-after-decl-inst': [FAIL],
+  'language/expressions/generators/generator-created-after-decl-inst': [FAIL],
+  'language/expressions/async-generator/generator-created-after-decl-inst': [FAIL],
+  'language/statements/async-generator/generator-created-after-decl-inst': [FAIL],
+
+  # await tests that require flags
+  'language/expressions/await/async-generator-interleaved': ['--harmony-await-optimization'],
+  'language/expressions/await/await-monkey-patched-promise': ['--harmony-await-optimization'],
+  'language/expressions/await/for-await-of-interleaved': ['--harmony-await-optimization'],
+  'language/expressions/await/async-await-interleaved': ['--harmony-await-optimization'],
+
+  # https://github.com/tc39/test262/issues/2033
+  'language/expressions/class/elements/private-derived-cls-direct-eval-err-contains-supercall': [SKIP],
+  'language/expressions/class/elements/private-derived-cls-direct-eval-err-contains-supercall-1': [SKIP],
+  'language/expressions/class/elements/private-derived-cls-direct-eval-err-contains-supercall-2': [SKIP],
+  'language/expressions/class/elements/private-derived-cls-indirect-eval-err-contains-supercall': [SKIP],
+  'language/expressions/class/elements/private-derived-cls-indirect-eval-err-contains-supercall-1': [SKIP],
+  'language/expressions/class/elements/private-derived-cls-indirect-eval-err-contains-supercall-2': [SKIP],
+  'language/statements/class/elements/private-derived-cls-direct-eval-err-contains-supercall': [SKIP],
+  'language/statements/class/elements/private-derived-cls-direct-eval-err-contains-supercall-1': [SKIP],
+  'language/statements/class/elements/private-derived-cls-direct-eval-err-contains-supercall-2': [SKIP],
+  'language/statements/class/elements/private-derived-cls-indirect-eval-err-contains-supercall': [SKIP],
+  'language/statements/class/elements/private-derived-cls-indirect-eval-err-contains-supercall-1': [SKIP],
+  'language/statements/class/elements/private-derived-cls-indirect-eval-err-contains-supercall-2': [SKIP],
+
+  # https://github.com/tc39/test262/issues/2034
+  'language/expressions/postfix-decrement/arguments': [SKIP],
+  'language/expressions/postfix-decrement/arguments-nostrict': [SKIP],
+  'language/expressions/postfix-decrement/eval': [SKIP],
+  'language/expressions/postfix-decrement/eval-nostrict': [SKIP],
+  'language/expressions/postfix-increment/arguments': [SKIP],
+  'language/expressions/postfix-increment/arguments-nostrict': [SKIP],
+  'language/expressions/postfix-increment/eval': [SKIP],
+  'language/expressions/postfix-increment/eval-nostrict': [SKIP],
+  'language/expressions/prefix-decrement/arguments': [SKIP],
+  'language/expressions/prefix-decrement/arguments-nostrict': [SKIP],
+  'language/expressions/prefix-decrement/eval': [SKIP],
+  'language/expressions/prefix-decrement/eval-nostrict': [SKIP],
+  'language/expressions/prefix-increment/arguments': [SKIP],
+  'language/expressions/prefix-increment/arguments-nostrict': [SKIP],
+  'language/expressions/prefix-increment/eval': [SKIP],
+  'language/expressions/prefix-increment/eval-nostrict': [SKIP],
+
+  # https://github.com/tc39/proposal-class-fields/issues/215
+  'language/expressions/function/early-errors/invalid-names-call-expression-bad-reference': [FAIL],
+  'language/expressions/function/early-errors/invalid-names-call-expression-this': [FAIL],
+  'language/expressions/function/early-errors/invalid-names-member-expression-bad-reference': [FAIL],
+  'language/expressions/function/early-errors/invalid-names-member-expression-this': [FAIL],
+  'language/statements/function/early-errors/invalid-names-call-expression-bad-reference': [FAIL],
+  'language/statements/function/early-errors/invalid-names-call-expression-this': [FAIL],
+  'language/statements/function/early-errors/invalid-names-member-expression-bad-reference': [FAIL],
+  'language/statements/function/early-errors/invalid-names-member-expression-this': [FAIL],
+
+  ######################## NEEDS INVESTIGATION ###########################
+
+  # These test failures are specific to the intl402 suite and need investigation
+  # to be either marked as bugs with issues filed for them or as deliberate
+  # incompatibilities if the test cases turn out to be broken or ambiguous.
+  # Some of these are related to v8:4361 in being visible side effects from Intl.
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=7833
+  'built-ins/Atomics/wait/cannot-suspend-throws': [SKIP],
+  'built-ins/Atomics/wait/undefined-index-defaults-to-zero': [SKIP],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=8258
+  'intl402/Locale/constructor-options-language-valid-undefined': [FAIL],
+
+  ##################### DELIBERATE INCOMPATIBILITIES #####################
+
+  # https://github.com/tc39/ecma262/pull/889
+  'annexB/language/function-code/block-decl-func-skip-arguments': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=6538
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=6541
+  'language/export/escaped-as-export-specifier': [FAIL],
+  'language/export/escaped-from': [FAIL],
+  'language/expressions/object/method-definition/escaped-get': [FAIL],
+  'language/expressions/object/method-definition/escaped-set': [FAIL],
+  'language/import/escaped-as-import-specifier': [FAIL],
+  'language/import/escaped-as-namespace-import': [FAIL],
+  'language/import/escaped-from': [FAIL],
+  'language/statements/for-await-of/escaped-of': [FAIL],
+  'language/statements/for-of/escaped-of': [FAIL],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=6543
+  'language/statements/labeled/value-await-non-module-escaped': [FAIL],
+  'language/statements/labeled/value-yield-non-strict-escaped': [FAIL],
+  'language/expressions/async-arrow-function/escaped-async-line-terminator': [FAIL],
+  'language/expressions/class/class-name-ident-await-escaped': [FAIL],
+  'language/statements/class/class-name-ident-await-escaped': [FAIL],
+
+  ############################ INVALID TESTS #############################
+
+  # Test makes unjustified assumptions about the number of calls to SortCompare.
+  # Test262 Bug: https://bugs.ecmascript.org/show_bug.cgi?id=596
+  'built-ins/Array/prototype/sort/bug_596_1': [PASS, FAIL_OK],
+
+  # https://github.com/tc39/test262/pull/688#pullrequestreview-14025354
+  'built-ins/Function/internals/Construct/derived-this-uninitialized-realm': [FAIL],
+
+  # Date tests that fail in CE(S)T timezone.
+  # https://bugs.chromium.org/p/v8/issues/detail?id=5449
+  'built-ins/Date/prototype/setFullYear/new-value-time-clip': [PASS, FAIL],
+  'built-ins/Date/prototype/setMonth/new-value-time-clip': [PASS, FAIL],
+
+  # Test against internals of harness; we plug in differently
+  'harness/detachArrayBuffer': [SKIP],
+  'harness/detachArrayBuffer-host-detachArrayBuffer': [SKIP],
+
+  ############################ SKIPPED TESTS #############################
+
+  # These tests take a looong time to run.
+  'built-ins/decodeURI/S15.1.3.1_A1.10_T1': [SKIP],
+  'built-ins/decodeURI/S15.1.3.1_A1.11_T1': [SKIP],
+  'built-ins/decodeURI/S15.1.3.1_A1.11_T2': [SKIP],
+  'built-ins/decodeURI/S15.1.3.1_A1.12_T1': [SKIP],
+  'built-ins/decodeURI/S15.1.3.1_A1.12_T2': [SKIP],
+  'built-ins/decodeURI/S15.1.3.1_A2.5_T1': [SKIP],
+  'built-ins/decodeURIComponent/S15.1.3.2_A1.11_T1': [SKIP],
+  'built-ins/decodeURIComponent/S15.1.3.2_A1.12_T1': [SKIP],
+  'built-ins/decodeURIComponent/S15.1.3.2_A2.5_T1': [SKIP],
+  'language/literals/regexp/S7.8.5_A1.1_T2': [SKIP],
+  'language/literals/regexp/S7.8.5_A1.4_T2': [SKIP],
+  'language/literals/regexp/S7.8.5_A2.1_T2': [SKIP],
+  'language/literals/regexp/S7.8.5_A2.4_T2': [SKIP],
+  'built-ins/Array/prototype/slice/S15.4.4.10_A3_T1': [SKIP],
+  'built-ins/Array/prototype/slice/S15.4.4.10_A3_T2': [SKIP],
+
+  # https://bugs.chromium.org/p/v8/issues/detail?id=7187
+  'built-ins/Function/prototype/toString/line-terminator-normalisation-CR': [SKIP],
+
+  ############################ SLOW TESTS #############################
+
+  'annexB/built-ins/RegExp/RegExp-leading-escape-BMP': [PASS, SLOW],
+  'annexB/built-ins/RegExp/RegExp-trailing-escape-BMP': [PASS, SLOW],
+  'language/comments/S7.4_A5': [PASS, SLOW],
+  'language/comments/S7.4_A6': [PASS, SLOW],
+
+}],  # ALWAYS
+
+['no_i18n == True', {
+  # Unicode canonicalization is not available with i18n turned off.
+  'built-ins/String/prototype/localeCompare/15.5.4.9_CE': [SKIP],
+
+  # Unicode regexp case mapping is not available with i18n turned off.
+  'language/literals/regexp/u-case-mapping': [SKIP],
+
+  # BUG(v8:4437).
+  'built-ins/String/prototype/normalize/return-normalized-string': [SKIP],
+  'built-ins/String/prototype/normalize/return-normalized-string-from-coerced-form': [SKIP],
+  'built-ins/String/prototype/normalize/return-normalized-string-using-default-parameter': [SKIP],
+
+  # Case-conversion is not fully compliant to the Unicode spec with i18n off.
+  'built-ins/String/prototype/toLocaleLowerCase/Final_Sigma_U180E': [FAIL],
+  'built-ins/String/prototype/toLocaleLowerCase/special_casing_conditional': [FAIL],
+  'built-ins/String/prototype/toLocaleLowerCase/supplementary_plane': [FAIL],
+  'built-ins/String/prototype/toLowerCase/Final_Sigma_U180E': [FAIL],
+  'built-ins/String/prototype/toLowerCase/special_casing_conditional': [FAIL],
+  'built-ins/String/prototype/toLowerCase/supplementary_plane': [FAIL],
+  'built-ins/String/prototype/toLocaleUpperCase/supplementary_plane': [FAIL],
+  'built-ins/String/prototype/toUpperCase/supplementary_plane': [FAIL],
+
+  # Locale-sensitive case-conversion is not available with i18n off.
+  'intl402/String/prototype/toLocaleLowerCase/special_casing_Azeri': [FAIL],
+  'intl402/String/prototype/toLocaleLowerCase/special_casing_Lithuanian': [FAIL],
+  'intl402/String/prototype/toLocaleLowerCase/special_casing_Turkish': [FAIL],
+  'intl402/String/prototype/toLocaleUpperCase/special_casing_Azeri': [FAIL],
+  'intl402/String/prototype/toLocaleUpperCase/special_casing_Lithuanian': [FAIL],
+  'intl402/String/prototype/toLocaleUpperCase/special_casing_Turkish': [FAIL],
+
+  # Unicode property escapes unavailable without i18n
+  'built-ins/RegExp/property-escapes/*': [SKIP],
+  'built-ins/RegExp/named-groups/unicode-property-names': [SKIP],
+}],  # no_i18n == True
+
+['arch == arm or arch == mipsel or arch == mips or arch == arm64 or arch == mips64 or arch == mips64el', {
+
+  # TODO(mstarzinger): Causes stack overflow on simulators due to eager
+  # compilation of parenthesized function literals. Needs investigation.
+  'language/statements/function/S13.2.1_A1_T1': [SKIP],
+
+  # BUG(3251225): Tests that timeout with --noopt.
+  'built-ins/decodeURI/S15.1.3.1_A2.4_T1': [SKIP],
+  'built-ins/decodeURI/S15.1.3.1_A2.5_T1': [SKIP],
+  'built-ins/decodeURIComponent/S15.1.3.2_A2.4_T1': [SKIP],
+  'built-ins/decodeURIComponent/S15.1.3.2_A2.5_T1': [SKIP],
+  'built-ins/encodeURI/S15.1.3.3_A2.3_T1': [SKIP],
+  'built-ins/encodeURIComponent/S15.1.3.4_A2.3_T1': [SKIP],
+}],  # 'arch == arm or arch == mipsel or arch == mips or arch == arm64'
+
+['byteorder == big', {
+  # Test failures on big endian platforms due to the way the tests
+  # are written
+
+  # https://github.com/tc39/test262/issues/757
+  'built-ins/TypedArray/prototype/set/typedarray-arg-set-values-same-buffer-other-type': [SKIP],
+}],
+
+['asan == True', {
+  # BUG(v8:4653): Test262 tests which rely on quit() are not compatible with
+  # asan's --omit-quit flag.
+  'built-ins/Promise/prototype/then/deferred-is-resolved-value': [SKIP],
+  'language/expressions/dynamic-import/always-create-new-promise': [SKIP],
+  'language/expressions/dynamic-import/assign-expr-get-value-abrupt-throws': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/additive-expr': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/array-literal': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/arrow-function': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/await-expr': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/await-identifier': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/call-expr-arguments': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/call-expr-expr': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/call-expr-identifier': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/cover-call-expr': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/cover-parenthesized-expr': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/identifier': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/import-meta': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/lhs-assign-operator-assign-expr': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/lhs-eq-assign-expr': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/lhs-eq-assign-expr-nostrict': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/logical-and-expr': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/logical-or-expr': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/member-expr': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/new-target': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/object-literal': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/tagged-function-call': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/ternary': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/this': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/unary-expr': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/yield-assign-expr': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/yield-expr': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/yield-identifier': [SKIP],
+  'language/expressions/dynamic-import/assignment-expression/yield-star': [SKIP],
+  'language/expressions/dynamic-import/await-import-evaluation': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-arrow-import-catch-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-arrow-import-catch-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-arrow-import-catch-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-arrow-import-catch-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-arrow-import-catch-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-arrow-import-catch-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-arrow-import-catch-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-arrow-function-await-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-arrow-function-await-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-arrow-function-await-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-arrow-function-await-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-arrow-function-await-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-arrow-function-await-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-arrow-function-await-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-arrow-function-return-await-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-arrow-function-return-await-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-arrow-function-return-await-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-arrow-function-return-await-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-arrow-function-return-await-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-arrow-function-return-await-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-arrow-function-return-await-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-await-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-await-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-await-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-await-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-await-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-await-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-await-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-return-await-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-return-await-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-return-await-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-return-await-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-return-await-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-return-await-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-return-await-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-function-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-gen-await-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-gen-await-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-gen-await-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-gen-await-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-gen-await-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-gen-await-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-gen-await-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-gen-return-await-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-gen-return-await-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-gen-return-await-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-gen-return-await-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-gen-return-await-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-gen-return-await-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-async-gen-return-await-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-block-import-catch-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-block-import-catch-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-block-import-catch-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-block-import-catch-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-block-import-catch-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-block-import-catch-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-block-import-catch-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-block-labeled-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-block-labeled-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-block-labeled-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-block-labeled-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-block-labeled-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-block-labeled-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-block-labeled-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-do-while-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-do-while-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-do-while-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-do-while-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-do-while-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-do-while-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-do-while-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-else-import-catch-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-else-import-catch-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-else-import-catch-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-else-import-catch-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-else-import-catch-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-else-import-catch-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-else-import-catch-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-function-import-catch-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-function-import-catch-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-function-import-catch-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-function-import-catch-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-function-import-catch-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-function-import-catch-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-function-import-catch-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-if-import-catch-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-if-import-catch-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-if-import-catch-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-if-import-catch-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-if-import-catch-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-if-import-catch-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-if-import-catch-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-while-import-catch-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-while-import-catch-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-while-import-catch-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-while-import-catch-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-while-import-catch-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-while-import-catch-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/nested-while-import-catch-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/catch/top-level-import-catch-eval-rqstd-abrupt-typeerror': [SKIP],
+  'language/expressions/dynamic-import/catch/top-level-import-catch-eval-rqstd-abrupt-urierror': [SKIP],
+  'language/expressions/dynamic-import/catch/top-level-import-catch-eval-script-code-target': [SKIP],
+  'language/expressions/dynamic-import/catch/top-level-import-catch-file-does-not-exist': [SKIP],
+  'language/expressions/dynamic-import/catch/top-level-import-catch-instn-iee-err-ambiguous-import': [SKIP],
+  'language/expressions/dynamic-import/catch/top-level-import-catch-instn-iee-err-circular': [SKIP],
+  'language/expressions/dynamic-import/catch/top-level-import-catch-specifier-tostring-abrupt-rejects': [SKIP],
+  'language/expressions/dynamic-import/custom-primitive': [SKIP],
+  'language/expressions/dynamic-import/double-error-resolution': [SKIP],
+  'language/expressions/dynamic-import/double-error-resolution-promise': [SKIP],
+  'language/expressions/dynamic-import/escape-sequence-import': [SKIP],
+  'language/expressions/dynamic-import/eval-export-dflt-cls-anon': [SKIP],
+  'language/expressions/dynamic-import/eval-export-dflt-cls-named': [SKIP],
+  'language/expressions/dynamic-import/eval-export-dflt-cls-name-meth': [SKIP],
+  'language/expressions/dynamic-import/eval-export-dflt-expr-cls-anon': [SKIP],
+  'language/expressions/dynamic-import/eval-export-dflt-expr-cls-named': [SKIP],
+  'language/expressions/dynamic-import/eval-export-dflt-expr-cls-name-meth': [SKIP],
+  'language/expressions/dynamic-import/eval-export-dflt-expr-fn-anon': [SKIP],
+  'language/expressions/dynamic-import/eval-export-dflt-expr-fn-named': [SKIP],
+  'language/expressions/dynamic-import/eval-export-dflt-expr-gen-anon': [SKIP],
+  'language/expressions/dynamic-import/eval-export-dflt-expr-gen-named': [SKIP],
+  'language/expressions/dynamic-import/eval-export-dflt-expr-in': [SKIP],
+  'language/expressions/dynamic-import/eval-rqstd-once': [SKIP],
+  'language/expressions/dynamic-import/eval-self-once-module': [SKIP],
+  'language/expressions/dynamic-import/eval-self-once-script': [SKIP],
+  'language/expressions/dynamic-import/for-await-resolution-and-error-agen': [SKIP],
+  'language/expressions/dynamic-import/for-await-resolution-and-error-agen-yield': [SKIP],
+  'language/expressions/dynamic-import/for-await-resolution-and-error': [SKIP],
+  'language/expressions/dynamic-import/imported-self-update': [SKIP],
+  'language/expressions/dynamic-import/indirect-resolution': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-define-own-property': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-delete-exported-init-no-strict': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-delete-exported-init-strict': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-delete-non-exported-no-strict': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-delete-non-exported-strict': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-extensible': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-get-nested-namespace-dflt-direct': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-get-nested-namespace-dflt-indirect': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-get-nested-namespace-props-nrml': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-get-own-property-str-found-init': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-get-own-property-str-not-found': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-get-own-property-sym': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-get-str-found': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-get-str-not-found': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-get-sym-found': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-get-sym-not-found': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-has-property-str-found-init': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-has-property-str-not-found': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-has-property-sym-found': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-has-property-sym-not-found': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-no-iterator': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-own-property-keys-sort': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-prevent-extensions-object': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-prevent-extensions-reflect': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-prop-descs': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-prototype': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-set-no-strict': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-set-prototype-of': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-set-prototype-of-null': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-set-same-values-no-strict': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-set-same-values-strict': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-set-strict': [SKIP],
+  'language/expressions/dynamic-import/namespace/await-ns-Symbol-toStringTag': [SKIP],
+  'language/expressions/dynamic-import/namespace/default-property-not-set-own': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-define-own-property': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-delete-exported-init-no-strict': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-delete-exported-init-strict': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-delete-non-exported-no-strict': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-delete-non-exported-strict': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-extensible': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-get-nested-namespace-dflt-direct': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-get-nested-namespace-dflt-indirect': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-get-nested-namespace-props-nrml': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-get-own-property-str-found-init': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-get-own-property-str-not-found': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-get-own-property-sym': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-get-str-found': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-get-str-not-found': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-get-sym-found': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-get-sym-not-found': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-has-property-str-found-init': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-has-property-str-not-found': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-has-property-sym-found': [SKIP],
+  'language/expressions/dynamic-import/namespace/promise-then-ns-has-property-sym-not-found': [SKIP],
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+  'language/expressions/dynamic-import/usage/nested-arrow-import-then-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-arrow-import-then-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-arrow-import-then-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-arrow-function-await-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-arrow-function-await-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-arrow-function-await-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-arrow-function-await-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-arrow-function-await-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-arrow-function-await-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-arrow-function-return-await-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-arrow-function-return-await-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-arrow-function-return-await-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-arrow-function-return-await-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-arrow-function-return-await-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-arrow-function-return-await-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-await-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-await-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-await-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-await-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-await-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-await-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-return-await-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-return-await-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-return-await-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-return-await-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-return-await-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-return-await-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-function-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-gen-await-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-gen-await-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-gen-await-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-gen-await-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-gen-await-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-gen-await-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-gen-return-await-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-gen-return-await-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-gen-return-await-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-gen-return-await-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-gen-return-await-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-async-gen-return-await-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-block-import-then-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-block-import-then-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-block-import-then-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-block-import-then-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-block-import-then-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-block-import-then-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-do-while-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-do-while-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-do-while-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-do-while-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-do-while-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-do-while-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-else-import-then-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-else-import-then-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-else-import-then-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-else-import-then-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-else-import-then-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-else-import-then-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-function-import-then-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-function-import-then-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-function-import-then-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-function-import-then-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-function-import-then-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-function-import-then-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-if-braceless-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-if-braceless-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-if-braceless-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-if-braceless-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-if-braceless-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-if-braceless-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-if-import-then-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-if-import-then-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-if-import-then-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-if-import-then-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-if-import-then-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-if-import-then-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-while-import-then-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-while-import-then-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-while-import-then-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-while-import-then-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-while-import-then-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/nested-while-import-then-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/syntax-nested-block-labeled-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/syntax-nested-block-labeled-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/syntax-nested-block-labeled-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/syntax-nested-block-labeled-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/syntax-nested-block-labeled-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/syntax-nested-block-labeled-specifier-tostring': [SKIP],
+  'language/expressions/dynamic-import/usage/top-level-import-then-eval-gtbndng-indirect-update-dflt': [SKIP],
+  'language/expressions/dynamic-import/usage/top-level-import-then-eval-gtbndng-indirect-update': [SKIP],
+  'language/expressions/dynamic-import/usage/top-level-import-then-eval-script-code-host-resolves-module-code': [SKIP],
+  'language/expressions/dynamic-import/usage/top-level-import-then-is-call-expression-square-brackets': [SKIP],
+  'language/expressions/dynamic-import/usage/top-level-import-then-returns-thenable': [SKIP],
+  'language/expressions/dynamic-import/usage/top-level-import-then-specifier-tostring': [SKIP],
+}],  # asan == True
+
+['asan == True or msan == True or tsan == True', {
+  # https://bugs.chromium.org/p/v8/issues/detail?id=4639
+  # The failed allocation causes an asan/msan/tsan error
+  'built-ins/ArrayBuffer/allocation-limit': [SKIP],
+  'built-ins/ArrayBuffer/length-is-too-large-throws': [SKIP],
+  'built-ins/SharedArrayBuffer/allocation-limit': [SKIP],
+  'built-ins/SharedArrayBuffer/length-is-too-large-throws': [SKIP],
+}],  # asan == True or msan == True or tsan == True
+
+['variant == interpreted_regexp', {
+  # Call stack exceeded: https://crbug.com/v8/8678
+  'built-ins/RegExp/CharacterClassEscapes/character-class-non-digit-class-escape-plus-quantifier-flags-u': [SKIP],
+  'built-ins/RegExp/CharacterClassEscapes/character-class-non-whitespace-class-escape-plus-quantifier-flags-u': [SKIP],
+  'built-ins/RegExp/CharacterClassEscapes/character-class-non-word-class-escape-plus-quantifier-flags-u': [SKIP],
+}],  # variant == interpreted_regexp
+
+##############################################################################
+['variant == jitless', {
+  # https://crbug.com/v8/7777
+  'built-ins/RegExp/CharacterClassEscapes/character-class-non-digit-class-escape-plus-quantifier-flags-u': [SKIP],
+  'built-ins/RegExp/CharacterClassEscapes/character-class-non-whitespace-class-escape-plus-quantifier-flags-u': [SKIP],
+  'built-ins/RegExp/CharacterClassEscapes/character-class-non-word-class-escape-plus-quantifier-flags-u': [SKIP],
+}], # variant == jitless
+
+['variant == no_wasm_traps', {
+  '*': [SKIP],
+}],  # variant == no_wasm_traps
+
+['variant != default or arch == arm or arch == arm64 or arch == mipsel or arch == mips or arch == mips64 or arch == mips64el', {
+  # These tests take a long time to run
+  'built-ins/RegExp/property-escapes/generated/*': [SKIP],
+}],  # variant != default or arch == arm or arch == arm64
+
+['system == windows', {
+  # https://crbug.com/856119
+  'intl402/DateTimeFormat/prototype/resolvedOptions/basic': [SKIP],
+}],  # system == windows
+
 ]
diff --git a/implementation-contributed/v8/test262/testcfg.py b/implementation-contributed/v8/test262/testcfg.py
index 6674abbfce..8bec9965e2 100644
--- a/implementation-contributed/v8/test262/testcfg.py
+++ b/implementation-contributed/v8/test262/testcfg.py
@@ -46,14 +46,11 @@ FEATURE_FLAGS = {
   'class-static-fields-public': '--harmony-class-fields',
   'class-fields-private': '--harmony-private-fields',
   'class-static-fields-private': '--harmony-private-fields',
-  'Array.prototype.flat': '--harmony-array-flat',
-  'Array.prototype.flatMap': '--harmony-array-flat',
   'String.prototype.matchAll': '--harmony-string-matchall',
   'Symbol.matchAll': '--harmony-string-matchall',
   'numeric-separator-literal': '--harmony-numeric-separator',
   'Intl.ListFormat': '--harmony-intl-list-format',
   'Intl.Locale': '--harmony-locale',
-  'Intl.RelativeTimeFormat': '--harmony-intl-relative-time-format',
   'Intl.Segmenter': '--harmony-intl-segmenter',
   'Symbol.prototype.description': '--harmony-symbol-description',
   'globalThis': '--harmony-global',
diff --git a/implementation-contributed/v8/wasm-js/wasm-js.status b/implementation-contributed/v8/wasm-js/wasm-js.status
index 856a50aed0..16de4f9822 100644
--- a/implementation-contributed/v8/wasm-js/wasm-js.status
+++ b/implementation-contributed/v8/wasm-js/wasm-js.status
@@ -3,14 +3,6 @@
 # found in the LICENSE file.
 
 [
-[ALWAYS, {
-  # https://bugs.chromium.org/p/v8/issues/detail?id=8319
-  'memory/grow': [FAIL],
-  'table/grow': [FAIL],
-  'table/get-set': [FAIL],
-  'module/customSections': [FAIL],
-}], # ALWAYS
-
 [ALWAYS, {
   # https://bugs.chromium.org/p/v8/issues/detail?id=8633
   'limits': [SKIP],
@@ -19,12 +11,13 @@
 ['arch == s390 or arch == s390x or system == aix', {
   # https://bugs.chromium.org/p/v8/issues/detail?id=8402
   'instance/constructor': [SKIP],
+  'constructor/instantiate': [SKIP],
 }],  # 'arch == s390 or arch == s390x or system == aix'
 
 ##############################################################################
-['lite_mode', {
+['lite_mode or variant == jitless', {
   # TODO(v8:7777): Re-enable once wasm is supported in jitless mode.
   '*': [SKIP],
-}], # lite_mode
+}], # lite_mode or variant == jitless
 
 ]