43ad23f6be
In inlined-call-polymorphic we need value numbering phase to deduce that TurbofanStaticAssert is always true. Turboprop doesn't enable this phase. So use %OptimizeFunctionTopTier so this function always tiers up to TurboFan. Bug: v8:12013 Change-Id: I803bddaca8cb0ba0ad56cbd9874d90b118698e3f Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3053579 Commit-Queue: Mythri Alle <mythria@chromium.org> Reviewed-by: Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#75913}
28 lines
888 B
JavaScript
28 lines
888 B
JavaScript
// Copyright 2020 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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//
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// Flags: --allow-natives-syntax --opt
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function make_closure() { return () => { return 42; } }
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%PrepareFunctionForOptimization(make_closure);
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%PrepareFunctionForOptimization(make_closure());
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function inline_polymorphic(f) {
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let answer = f();
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%TurbofanStaticAssert(answer == 42);
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}
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%PrepareFunctionForOptimization(inline_polymorphic);
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inline_polymorphic(make_closure());
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inline_polymorphic(make_closure());
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// Compile using top tier since we need value numbering phase for the
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// TurbofanStaticAssert to deduce answer is 42 at compile time. In Turboprop
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// this phase is disabled.
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%OptimizeFunctionForTopTier(inline_polymorphic);
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inline_polymorphic(make_closure());
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try {
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inline_polymorphic(3);
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} catch(e) {}
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