1113057e3e
This CL fixes the bug where x ^ x is reduced to Int32Constant(0) for both word32 and word64. Bug: chromium:1383362, v8:9407 Change-Id: I8a2ed879f0626071f560cc5ba8c21ef2d4107e62 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4020424 Reviewed-by: Nico Hartmann <nicohartmann@chromium.org> Commit-Queue: Qifan Pan <panq@google.com> Cr-Commit-Position: refs/heads/main@{#84218}
18 lines
363 B
JavaScript
18 lines
363 B
JavaScript
// Copyright 2022 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 f(x) {
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for (let i = 0; i < 1; ++i) {
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x ^= x;
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}
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return x;
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}
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%PrepareFunctionForOptimization(f);
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f(1n);
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%OptimizeFunctionOnNextCall(f);
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f(1n);
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