v8/test/mjsunit/compiler/string-concat-try-catch.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

31 lines
793 B
JavaScript

// Copyright 2017 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
var a = "a".repeat(%StringMaxLength());
(function() {
function foo(a) {
try {
return "longer than ConsString:kMinLength" + a + "0123456789012";
} catch (e) {
return e;
}
}
%PrepareFunctionForOptimization(foo);
foo("a");
foo("a");
// Optimize with string length protector check.
%OptimizeFunctionOnNextCall(foo);
foo("a");
assertInstanceof(foo(a), RangeError);
// Optimize without string length protector check.
%PrepareFunctionForOptimization(foo);
%OptimizeFunctionOnNextCall(foo);
foo("a");
assertInstanceof(foo(a), RangeError);
})();