7376e12e00
This makes sure that the deoptimizer preserves the exact bit pattern of
floating-point values (both 32-bit and 64-bit) up to the point where a
potential {HeapNumber} is allocated. It in turn allows us to correctly
recognize the {hole_nan_value} when stored into a {FixedDouleArray}.
R=jarin@chromium.org
TEST=mjsunit/regress/regress-crbug-684208
BUG=chromium:684208
Review-Url: https://codereview.chromium.org/2652303002
Cr-Commit-Position: refs/heads/master@{#42679}
16 lines
415 B
JavaScript
16 lines
415 B
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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function foo() {
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var a = [1, 2.3, /*hole*/, 4.2];
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%_DeoptimizeNow();
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return a[2];
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}
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assertSame(undefined, foo());
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assertSame(undefined, foo());
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%OptimizeFunctionOnNextCall(foo)
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assertSame(undefined, foo());
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