v8/test/mjsunit/compiler/escape-analysis-array.js
Ross McIlroy 31a3cfbc10 [Test] Add PrepareForOptimization to mjsunit/compiler
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}
2019-03-04 12:25:41 +00:00

35 lines
941 B
JavaScript

// Copyright 2018 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
// Test variable index access to array with 1 element.
(function testOneElementArrayVariableIndex() {
function f(i) {
const a = new Array("first");
return a[i];
}
%PrepareFunctionForOptimization(f);
assertEquals("first", f(0));
assertEquals("first", f(0));
%OptimizeFunctionOnNextCall(f);
assertEquals("first", f(0));
})();
// Test variable index access to array with 2 elements.
(function testTwoElementArrayVariableIndex() {
function f(i) {
const a = new Array("first", "second");
return a[i];
}
%PrepareFunctionForOptimization(f);
assertEquals("first", f(0));
assertEquals("second", f(1));
%OptimizeFunctionOnNextCall(f);
assertEquals("first", f(0));
assertEquals("second", f(1));
})();