Add a write buffer, aligned so that a single bit tells us whether it has...

src/assembler.h

Index: src/assembler.h
===================================================================
--- src/assembler.h	(revision 6011)
+++ src/assembler.h	(working copy)
@@ -534,6 +534,9 @@
   static ExternalReference new_space_mask();
   static ExternalReference heap_always_allocate_scope_depth();
 
+  // Write barrier.

[Vyacheslav Egorov (Chromium), 2010/12/14 22:40:14]

barrier -> buffer.

[Erik Corry, 2010/12/15 08:00:13]

The write barrier is implemented using a write buffer.  It would be redundant to
have 'write buffer' in the comment would be redundant. 

+  static ExternalReference write_buffer_top();
+
   // Used for fast allocation in generated code.
   static ExternalReference new_space_allocation_top_address();
   static ExternalReference new_space_allocation_limit_address();