Revision: 20461
Author: [email protected]
Date: Thu Apr 3 07:35:13 2014 UTC
Log: Do not generate LDummyUse instruction for HCapturedObject
LDummyUse confuses the register allocator (since there is no definition
for the use).
[email protected]
BUG=
Review URL: https://codereview.chromium.org/222283002
http://code.google.com/p/v8/source/detail?r=20461
Added:
/branches/bleeding_edge/test/mjsunit/regress/regress-captured-object-no-dummy-use.js
Modified:
/branches/bleeding_edge/src/hydrogen-instructions.cc
=======================================
--- /dev/null
+++
/branches/bleeding_edge/test/mjsunit/regress/regress-captured-object-no-dummy-use.js
Thu Apr 3 07:35:13 2014 UTC
@@ -0,0 +1,18 @@
+// 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
+
+var global = "10.1";
+function f() { }
+function g(a) { this.d = a; }
+function h() {
+ var x = new f();
+ global.dummy = this;
+ var y = new g(x);
+}
+h();
+h();
+%OptimizeFunctionOnNextCall(h);
+h();
=======================================
--- /branches/bleeding_edge/src/hydrogen-instructions.cc Tue Apr 1
10:32:25 2014 UTC
+++ /branches/bleeding_edge/src/hydrogen-instructions.cc Thu Apr 3
07:35:13 2014 UTC
@@ -509,6 +509,7 @@
!(block()->IsReachable() ||
IsBlockEntry() ||
IsControlInstruction() ||
+ IsCapturedObject() ||
IsSimulate() ||
IsEnterInlined() ||
IsLeaveInlined());
--
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