Only use the non-strict-arguments-stub if the store site is non-strict.
BUG=349874
LOG=N
R=mvstanton@chromium.org
Review URL: https://codereview.chromium.org/176843018
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19690 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/ic.cc b/src/ic.cc
index 2607bb3..3c9f1b6 100644
--- a/src/ic.cc
+++ b/src/ic.cc
@@ -1689,7 +1689,9 @@
bool key_is_smi_like = key->IsSmi() || !key->ToSmi()->IsFailure();
if (receiver->elements()->map() ==
isolate()->heap()->non_strict_arguments_elements_map()) {
- stub = non_strict_arguments_stub();
+ if (strict_mode() == kNonStrictMode) {
+ stub = non_strict_arguments_stub();
+ }
} else if (key_is_smi_like &&
!(target().is_identical_to(non_strict_arguments_stub()))) {
// We should go generic if receiver isn't a dictionary, but our
diff --git a/test/mjsunit/regress-keyed-store-non-strict-arguments.js b/test/mjsunit/regress-keyed-store-non-strict-arguments.js
new file mode 100644
index 0000000..865d600
--- /dev/null
+++ b/test/mjsunit/regress-keyed-store-non-strict-arguments.js
@@ -0,0 +1,16 @@
+// Copyright 2014 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.
+
+function args(arg) { return arguments; }
+var a = args(false);
+
+(function () {
+ "use strict";
+ a["const" + 0] = 0;
+})();
+
+(function () {
+ "use strict";
+ a[0] = 0;
+})();
