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sourceRevisionAtLastExport: 33f2fb0e53d135f0ee17cfccd9d993eb2a6f47de targetRevisionAtLastExport: 31340cbd9add103f586d501b0c3354b7b182abc0
58 lines
2.4 KiB
JavaScript
58 lines
2.4 KiB
JavaScript
// Copyright 2013 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --allow-natives-syntax
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var p = { f: function () { return "p"; } };
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var o = Object.create(p);
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o.x = true;
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delete o.x; // slow case object
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var u = { x: 0, f: function () { return "u"; } }; // object with some other map
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function F(x) {
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return x.f();
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}
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// First make CALL IC in F go MEGAMORPHIC and ensure that we put the stub
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// that calls p.f (guarded by a negative dictionary lookup on the receiver)
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// into the stub cache
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assertEquals("p", F(o));
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assertEquals("p", F(o));
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assertEquals("u", F(u));
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assertEquals("p", F(o));
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assertEquals("u", F(u));
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// Optimize F. We will inline p.f into F guarded by map checked against
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// receiver which does not work for slow case objects.
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%OptimizeFunctionOnNextCall(F);
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assertEquals("p", F(o));
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// Add f to o. o's map will *not* change.
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o.f = function () { return "o"; };
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assertEquals("o", F(o));
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