210856603f
TurboFan truncated null to +0 even in contexts such as -0 == null because it was not handling the TypeCheck correctly. This restricts the type conversion case to not apply truncation in this case (see comment in patch). Change-Id: Ia38ace9608800c8d61988de402a31dd863d9160a Bug: chromium:961237 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1609538 Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Commit-Queue: Sigurd Schneider <sigurds@chromium.org> Cr-Commit-Position: refs/heads/master@{#61446}
16 lines
437 B
JavaScript
16 lines
437 B
JavaScript
// Copyright 2019 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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const a = 1.1;
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const b = null;
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function f(x) { return -0 == (x ? a : b); }
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%PrepareFunctionForOptimization(f);
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assertEquals(false, f(true));
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assertEquals(false, f(true));
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%OptimizeFunctionOnNextCall(f);
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assertEquals(false, f(false));
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