Do inline object filtering (via page flags) before call to RecordWriteStub.

src/ia32/macro-assembler-ia32.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 70 matching lines @@
                            SaveFPRegsMode save_fp);
 
   // Check if object is in new space.
   // scratch can be object itself, but it will be clobbered.
   template <typename LabelType>
   void InNewSpace(Register object,
                   Register scratch,
                   Condition cc,  // equal for new space, not_equal otherwise.
                   LabelType* branch);
 
-  // Check if old-space object is on a scan-on-scavenge page.
-  template <typename LabelType>
-  void HasScanOnScavenge(Register object,
-                         Register scratch,
-                         LabelType* scan_on_scavenge);
+  template<typename LabelType>
+  void CheckPageFlag(Register object,
+                     Register scratch,
+                     MemoryChunk::MemoryChunkFlags flag,
+                     Condition cc,
+                     LabelType* not_set);
 
   // Check if an object has a given incremental marking colour.  Also uses ecx!
   // The colour bits are found by splitting the address at the bit offset
   // indicated by the mask: bits that are zero in the mask are used for the
   // address of the bitmap, and bits that are one in the mask are used for the
   // index of the bit.
   template <typename LabelType>
   void HasColour(Register object,
                  Register scratch0,
                  Register scratch1,
@@ skipping 796 matching lines @@
   }                                                                       \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_MACRO_ASSEMBLER_IA32_H_