26 lines
633 B
JavaScript
26 lines
633 B
JavaScript
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// Copyright 2024 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 --maglev-licm --no-maglev-loop-peeling
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function foo(x, y) {
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let once = false;
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while (x.foo == y) {
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if (once) return x;
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once = true;
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}
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return x
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}
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%PrepareFunctionForOptimization(foo);
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foo({foo: 1}, 1);
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// Deopt to disable map hoisting
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%OptimizeMaglevOnNextCall(foo);
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foo({foo: 1}, 1);
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foo({foo: 1}, 1.1);
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// Deopt with actually failing map check
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%OptimizeMaglevOnNextCall(foo);
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foo({foo: 1}, 1);
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foo({x: {}}, 1);
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