Revision: 22677
Author: [email protected]
Date: Tue Jul 29 14:53:11 2014 UTC
Log: Fix handling of potential string additions in hydrogen.
[email protected]
TEST=mjsunit/regress/regress-3476
BUG=v8:3476
LOG=N
Review URL: https://codereview.chromium.org/423083004
http://code.google.com/p/v8/source/detail?r=22677
Added:
/branches/bleeding_edge/test/mjsunit/regress/regress-3476.js
Modified:
/branches/bleeding_edge/src/hydrogen.cc
=======================================
--- /dev/null
+++ /branches/bleeding_edge/test/mjsunit/regress/regress-3476.js Tue Jul 29
14:53:11 2014 UTC
@@ -0,0 +1,24 @@
+// 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.
+
+// Flags: --allow-natives-syntax
+
+function MyWrapper(v) {
+ return { valueOf: function() { return v } };
+}
+
+function f() {
+ assertEquals("truex", true + "x");
+ assertEquals("truey", true + new String("y"));
+ assertEquals("truez", true + new MyWrapper("z"));
+
+ assertEquals("xtrue", "x" + true);
+ assertEquals("ytrue", new String("y") + true);
+ assertEquals("ztrue", new MyWrapper("z") + true);
+}
+
+f();
+f();
+%OptimizeFunctionOnNextCall(f);
+f();
=======================================
--- /branches/bleeding_edge/src/hydrogen.cc Tue Jul 29 13:08:51 2014 UTC
+++ /branches/bleeding_edge/src/hydrogen.cc Tue Jul 29 14:53:11 2014 UTC
@@ -10240,7 +10240,9 @@
bool maybe_string_add = op == Token::ADD &&
(left_type->Maybe(Type::String()) ||
- right_type->Maybe(Type::String()));
+ left_type->Maybe(Type::Receiver()) ||
+ right_type->Maybe(Type::String()) ||
+ right_type->Maybe(Type::Receiver()));
if (left_type->Is(Type::None())) {
Add<HDeoptimize>("Insufficient type feedback for LHS of binary
operation",
--
--
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