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sourceRevisionAtLastExport: 33f2fb0e53d135f0ee17cfccd9d993eb2a6f47de targetRevisionAtLastExport: 31340cbd9add103f586d501b0c3354b7b182abc0
73 lines
2.7 KiB
JavaScript
73 lines
2.7 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: --track-fields --track-double-fields --allow-natives-syntax
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function smi_field() {
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// Assign twice to make the field non-constant.
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// TODO(ishell): update test once constant field tracking is done.
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var o = {smi: 1};
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o.smi = 0;
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return o;
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}
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function check_smi_repr(o, d1, d2) {
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var s = o.smi;
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var d = d1 - d2;
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s = s + d;
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o.smi = s;
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return o;
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}
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var test = smi_field();
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check_smi_repr(smi_field(), 5, 3);
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check_smi_repr(smi_field(), 6, 2);
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%OptimizeFunctionOnNextCall(check_smi_repr);
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var val = check_smi_repr(smi_field(), 8, 1);
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assertTrue(%HaveSameMap(val, test));
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function tagged_smi_field() {
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var o = {"tag":false};
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o.tag = 10;
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return o;
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}
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function check_smi_repr_from_tagged(o, o2) {
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var t = o2.tag;
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o.smi = t;
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return o;
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}
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check_smi_repr_from_tagged(smi_field(), tagged_smi_field());
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check_smi_repr_from_tagged(smi_field(), tagged_smi_field());
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%OptimizeFunctionOnNextCall(check_smi_repr_from_tagged);
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var val = check_smi_repr_from_tagged(smi_field(), tagged_smi_field());
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assertTrue(%HaveSameMap(val, test));
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var overflow = tagged_smi_field();
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overflow.tag = 0x80000000;
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var val = check_smi_repr_from_tagged(smi_field(), overflow);
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