Revert of [heap] Avoid the use of cells to point from code to new-space objects.

src/x87/assembler-x87-inl.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 122 matching lines @@
   DCHECK(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT);
   Memory::Object_at(pc_) = target;
   if (icache_flush_mode != SKIP_ICACHE_FLUSH) {
     Assembler::FlushICache(isolate_, pc_, sizeof(Address));
   }
   if (write_barrier_mode == UPDATE_WRITE_BARRIER &&
       host() != NULL &&
       target->IsHeapObject()) {
     host()->GetHeap()->incremental_marking()->RecordWriteIntoCode(
         host(), this, HeapObject::cast(target));
-    host()->GetHeap()->RecordWriteIntoCode(host(), this, target);
   }
 }
 
 
 Address RelocInfo::target_external_reference() {
   DCHECK(rmode_ == RelocInfo::EXTERNAL_REFERENCE);
   return Memory::Address_at(pc_);
 }
 
 
@@ skipping 395 matching lines @@
 
 Operand::Operand(Immediate imm) {
   // [disp/r]
   set_modrm(0, ebp);
   set_dispr(imm.x_, imm.rmode_);
 }
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_X87_ASSEMBLER_X87_INL_H_