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Bugfix in hydrogen GVN.

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BUG=chromium:467481
LOG=Y

Review URL: https://codereview.chromium.org/1009933002

Cr-Commit-Position: refs/heads/master@{#27223}
This commit is contained in:
ishell 2015-03-16 06:46:10 -07:00 committed by Commit bot
parent cd67e97a7e
commit ddfca2b069
2 changed files with 22 additions and 3 deletions
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3
src/hydrogen.cc
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@ -6923,9 +6923,6 @@ HInstruction* HOptimizedGraphBuilder::BuildMonomorphicElementAccess(
PropertyAccessType access_type,
KeyedAccessStoreMode store_mode) {
HCheckMaps* checked_object = Add<HCheckMaps>(object, map, dependency);
if (dependency) {
checked_object->ClearDependsOnFlag(kElementsKind);
}
if (access_type == STORE && map->prototype()->IsJSObject()) {
// monomorphic stores need a prototype chain check because shape

22
test/mjsunit/regress/regress-467481.js Normal file
View File

@ -0,0 +1,22 @@
// 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 f(a1, a2) {
var v7 = a2[0];
var v8 = a1[0];
a2[0] = 0.3;
}
v6 = new Array(1);
v6[0] = "tagged";
f(v6, [1]);
v5 = new Array(1);
v5[0] = 0.1;
f(v5, v5);
v5 = new Array(10);
f(v5, v5);
%OptimizeFunctionOnNextCall(f);
f(v5, v5);
v5[0];