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e31f0a7d25
PR-URL: https://github.com/nodejs/node/pull/28918 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
43 lines
1.3 KiB
JavaScript
43 lines
1.3 KiB
JavaScript
// Copyright 2014 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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// -----------------------------------------------------------------------------
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function SmiTaggingCanOverflow(x) {
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x = x | 0;
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if (x == 0) return;
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return x;
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};
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%PrepareFunctionForOptimization(SmiTaggingCanOverflow);
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SmiTaggingCanOverflow(2147483647);
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SmiTaggingCanOverflow(2147483647);
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%OptimizeFunctionOnNextCall(SmiTaggingCanOverflow);
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assertEquals(2147483647, SmiTaggingCanOverflow(2147483647));
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// -----------------------------------------------------------------------------
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function ModILeftCanBeNegative() {
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var x = 0;
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for (var i = -1; i < 0; ++i) x = i % 2;
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return x;
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};
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%PrepareFunctionForOptimization(ModILeftCanBeNegative);
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ModILeftCanBeNegative();
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%OptimizeFunctionOnNextCall(ModILeftCanBeNegative);
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assertEquals(-1, ModILeftCanBeNegative());
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// -----------------------------------------------------------------------------
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function ModIRightCanBeZero() {
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var x = 0;
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for (var i = -1; i <= 0; ++i) x = 2 % i | 0;
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return x;
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};
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%PrepareFunctionForOptimization(ModIRightCanBeZero);
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ModIRightCanBeZero();
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%OptimizeFunctionOnNextCall(ModIRightCanBeZero);
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ModIRightCanBeZero();
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