e3e8ea5d65
To be consistent with the all the other tiers and avoid confusion, we rename --opt to ---turbofan, and --always-opt to --always-turbofan. Change-Id: Ie23dc8282b3fb4cf2fbf73b6c3d5264de5d09718 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3610431 Reviewed-by: Leszek Swirski <leszeks@chromium.org> Commit-Queue: Camillo Bruni <cbruni@chromium.org> Reviewed-by: Jakob Linke <jgruber@chromium.org> Cr-Commit-Position: refs/heads/main@{#80336}
38 lines
1.1 KiB
JavaScript
38 lines
1.1 KiB
JavaScript
// Copyright 2021 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 --turbofan --no-always-turbofan
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function f(x) {
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return BigInt.asUintN(3, x);
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}
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%PrepareFunctionForOptimization(f);
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assertEquals(7n, f(7n));
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assertEquals(1n, f(9n));
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%OptimizeFunctionOnNextCall(f);
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assertEquals(7n, f(7n));
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assertEquals(1n, f(9n));
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assertOptimized(f);
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// BigInt.asUintN throws TypeError for non-BigInt arguments.
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assertThrows(() => f(2), TypeError);
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if(%Is64Bit()) {
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// On 64 bit architectures TurboFan optimizes BigInt.asUintN to native code
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// that deoptimizes on non-BigInt arguments.
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assertUnoptimized(f);
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// The next time the function is optimized, speculation should be disabled
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// so the builtin call is kept, which won't deoptimize again.
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%PrepareFunctionForOptimization(f);
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%OptimizeFunctionOnNextCall(f);
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}
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assertEquals(7n, f(7n));
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assertOptimized(f);
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// Re-optimized still throws but does not deopt-loop.
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assertThrows(() => f(2), TypeError);
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assertOptimized(f);
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