Title: [149053] trunk/Source/WTF
- Revision
- 149053
- Author
- [email protected]
- Date
- 2013-04-24 12:34:50 -0700 (Wed, 24 Apr 2013)
Log Message
Use post-branch store for RefCountedBase::derefBase
https://bugs.webkit.org/show_bug.cgi?id=115078
Reviewed by Andreas Kling.
* wtf/RefCounted.h:
(WTF::RefCountedBase::derefBase): This makes the assembly easier to follow.
Modified Paths
Diff
Modified: trunk/Source/WTF/ChangeLog (149052 => 149053)
--- trunk/Source/WTF/ChangeLog 2013-04-24 18:34:04 UTC (rev 149052)
+++ trunk/Source/WTF/ChangeLog 2013-04-24 19:34:50 UTC (rev 149053)
@@ -1,3 +1,13 @@
+2013-04-24 Benjamin Poulain <[email protected]>
+
+ Use post-branch store for RefCountedBase::derefBase
+ https://bugs.webkit.org/show_bug.cgi?id=115078
+
+ Reviewed by Andreas Kling.
+
+ * wtf/RefCounted.h:
+ (WTF::RefCountedBase::derefBase): This makes the assembly easier to follow.
+
2013-04-23 Geoffrey Garen <[email protected]>
Filled out more cases of branch folding in bytecode when emitting expressions into a branching context
Modified: trunk/Source/WTF/wtf/RefCounted.h (149052 => 149053)
--- trunk/Source/WTF/wtf/RefCounted.h 2013-04-24 18:34:04 UTC (rev 149052)
+++ trunk/Source/WTF/wtf/RefCounted.h 2013-04-24 19:34:50 UTC (rev 149053)
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
+ * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@@ -139,14 +139,15 @@
#endif
ASSERT(m_refCount);
- if (m_refCount == 1) {
+ unsigned tempRefCount = m_refCount - 1;
+ if (!tempRefCount) {
#if CHECK_REF_COUNTED_LIFECYCLE
m_deletionHasBegun = true;
#endif
return true;
}
+ m_refCount = tempRefCount;
- --m_refCount;
#if CHECK_REF_COUNTED_LIFECYCLE
// Stop thread verification when the ref goes to 1 because it
// is safe to be passed to another thread at this point.
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