v8/test/mjsunit/regress/regress-undefined-nan.js
Mythri A 35253de786 Fix a failing mjsunit test with lazy feedback allocation
Bug: v8:8394
Change-Id: I02551ff3d51e914f5a24f221186f23a8e3d2cc77
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1648096
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62026}
2019-06-06 14:57:38 +00:00

38 lines
1.0 KiB
JavaScript

// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax
function loader(dst, src, i) {
dst[i] = src[i];
}
var ab = new ArrayBuffer(8);
var i_view = new Int32Array(ab);
i_view[0] = %GetHoleNaNUpper()
i_view[1] = %GetHoleNaNLower();
var f_view = new Float64Array(ab);
var fixed_double_elements = new Float64Array(1);
function opt_store() { fixed_double_elements[0] = f_view[0]; }
%PrepareFunctionForOptimization(opt_store);
opt_store();
opt_store();
%OptimizeFunctionOnNextCall(opt_store);
opt_store();
var i32 = new Int32Array(fixed_double_elements.buffer);
assertEquals(i_view[0], i32[0]);
assertEquals(i_view[1], i32[1]);
var doubles = [0.5];
%PrepareFunctionForOptimization(loader);
loader(doubles, fixed_double_elements, 0);
loader(doubles, fixed_double_elements, 0);
%OptimizeFunctionOnNextCall(loader);
loader(doubles, fixed_double_elements, 0);
assertTrue(doubles[0] !== undefined);