Revision: 4334
Author: [email protected]
Date: Wed Mar 31 23:57:31 2010
Log: Make check for writes without remembered set updates less restrictive.

One doesn't have to update remembered set if it already contains a mark for
the given address.

BUG=39766

Original review: http://codereview.chromium.org/1603002

Review URL: http://codereview.chromium.org/1577005
http://code.google.com/p/v8/source/detail?r=4334

Modified:
 /branches/bleeding_edge/src/objects-inl.h

=======================================
--- /branches/bleeding_edge/src/objects-inl.h   Fri Mar 26 16:33:37 2010
+++ /branches/bleeding_edge/src/objects-inl.h   Wed Mar 31 23:57:31 2010
@@ -742,7 +742,8 @@
   } else { \
     ASSERT(mode == SKIP_WRITE_BARRIER); \
     ASSERT(Heap::InNewSpace(object) || \
-           !Heap::InNewSpace(READ_FIELD(object, offset))); \
+           !Heap::InNewSpace(READ_FIELD(object, offset)) || \
+           Page::IsRSetSet(object->address(), offset)); \
   }

 #define READ_DOUBLE_FIELD(p, offset) \

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