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PR-URL: https://github.com/nodejs/node/pull/42657 Reviewed-By: Darshan Sen <raisinten@gmail.com> Reviewed-By: Richard Lau <rlau@redhat.com> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Michael Dawson <midawson@redhat.com>
23 lines
705 B
JavaScript
23 lines
705 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 --no-assert-types
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// Check that the branch elimination replace the redundant branch condition with
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// a phi node, and then the branch is folded in EffectControlLinearizationPhase.
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function foo(cond, v1, v2) {
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cond = cond | 0;
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var a = cond == 1 ? v1 : v2;
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if(cond == 1) {
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%TurbofanStaticAssert(a == v1);
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} else {
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%TurbofanStaticAssert(a == v2);
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}
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}
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%PrepareFunctionForOptimization(foo);
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foo(1, 10, 20); foo(2, 30, 40);
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%OptimizeFunctionOnNextCall(foo);
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foo(1, 10, 20); foo(2, 30, 40);
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