31a3cfbc10
BUG=v8:8801 Change-Id: I9d9d9824c6c9ad0176bbfd3723da1b578b17c256 Reviewed-on: https://chromium-review.googlesource.com/c/1495555 Commit-Queue: Ross McIlroy <rmcilroy@chromium.org> Reviewed-by: Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#60001}
47 lines
923 B
JavaScript
47 lines
923 B
JavaScript
// Copyright 2016 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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(function StoreHoleBitPattern() {
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function g(src, dst, i) {
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dst[i] = src[i];
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}
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var b = new ArrayBuffer(16);
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var i32 = new Int32Array(b);
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i32[0] = 0xFFF7FFFF;
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i32[1] = 0xFFF7FFFF;
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i32[3] = 0xFFF7FFFF;
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i32[4] = 0xFFF7FFFF;
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var f64 = new Float64Array(b);
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var a = [,0.1];
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%PrepareFunctionForOptimization(g);
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g(f64, a, 1);
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g(f64, a, 1);
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%OptimizeFunctionOnNextCall(g);
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g(f64, a, 0);
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assertTrue(Number.isNaN(a[0]));
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})();
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(function ConvertHoleToNumberAndStore() {
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function g(a, i) {
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var x = a[i];
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a[i] = +x;
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}
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var a=[,0.1];
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%PrepareFunctionForOptimization(g);
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g(a, 1);
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g(a, 1);
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%OptimizeFunctionOnNextCall(g);
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g(a, 0);
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assertTrue(Number.isNaN(a[0]));
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})();
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