Provide baseline for experimental GC implementation.

src/arm/macro-assembler-arm.h

 // Copyright 2010 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 112 matching lines @@
   void SmiJumpTable(Register index, Vector<Label*> targets);
   // Load an object from the root table.
   void LoadRoot(Register destination,
                 Heap::RootListIndex index,
                 Condition cond = al);
   // Store an object to the root table.
   void StoreRoot(Register source,
                  Heap::RootListIndex index,
                  Condition cond = al);
 
-
+#ifdef ENABLE_CARDMARKING_WRITE_BARRIER
   // Check if object is in new space.
   // scratch can be object itself, but it will be clobbered.
   void InNewSpace(Register object,
                   Register scratch,
                   Condition cc,  // eq for new space, ne otherwise
                   Label* branch);
 
 
   // For the page containing |object| mark the region covering [address]
   // dirty. The object address must be in the first 8K of an allocated page.
@@ skipping 13 matching lines @@
                    Register scratch1);
 
   // For the page containing |object| mark the region covering
   // [address] dirty. The object address must be in the first 8K of an
   // allocated page.  All 3 registers are clobbered by the operation,
   // as well as the ip register. RecordWrite updates the write barrier
   // even when storing smis.
   void RecordWrite(Register object,
                    Register address,
                    Register scratch);
+#endif
 
   // Push two registers.  Pushes leftmost register first (to highest address).
   void Push(Register src1, Register src2, Condition cond = al) {
     ASSERT(!src1.is(src2));
     if (src1.code() > src2.code()) {
       stm(db_w, sp, src1.bit() | src2.bit(), cond);
     } else {
       str(src1, MemOperand(sp, 4, NegPreIndex), cond);
       str(src2, MemOperand(sp, 4, NegPreIndex), cond);
     }
@@ skipping 629 matching lines @@
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_MACRO_ASSEMBLER_ARM_H_