Provide baseline for new GC infrastructure.

src/ia32/macro-assembler-ia32.cc

 // 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 34 matching lines @@
     : Assembler(buffer, size),
       generating_stub_(false),
       allow_stub_calls_(true),
       code_object_(Heap::undefined_value()) {
 }
 
 
 void MacroAssembler::RecordWriteHelper(Register object,
                                        Register addr,
                                        Register scratch) {
+  if (FLAG_new_gc) return;
+
   if (FLAG_debug_code) {
     // Check that the object is not in new space.
     Label not_in_new_space;
     InNewSpace(object, scratch, not_equal, &not_in_new_space);
     Abort("new-space object passed to RecordWriteHelper");
     bind(&not_in_new_space);
   }
 
   // Compute the page start address from the heap object pointer, and reuse
   // the 'object' register for it.
@@ skipping 30 matching lines @@
     and_(scratch, Heap::NewSpaceMask());
     j(cc, branch);
   }
 }
 
 
 void MacroAssembler::RecordWrite(Register object,
                                  int offset,
                                  Register value,
                                  Register scratch) {
+  if (FLAG_new_gc) return;
+
   // The compiled code assumes that record write doesn't change the
   // context register, so we check that none of the clobbered
   // registers are esi.
   ASSERT(!object.is(esi) && !value.is(esi) && !scratch.is(esi));
 
   // First, check if a write barrier is even needed. The tests below
   // catch stores of Smis and stores into young gen.
   Label done;
 
   // Skip barrier if writing a smi.
@@ skipping 31 matching lines @@
     mov(object, Immediate(BitCast<int32_t>(kZapValue)));
     mov(value, Immediate(BitCast<int32_t>(kZapValue)));
     mov(scratch, Immediate(BitCast<int32_t>(kZapValue)));
   }
 }
 
 
 void MacroAssembler::RecordWrite(Register object,
                                  Register address,
                                  Register value) {
+  if (FLAG_new_gc) return;
+
   // The compiled code assumes that record write doesn't change the
   // context register, so we check that none of the clobbered
   // registers are esi.
   ASSERT(!object.is(esi) && !value.is(esi) && !address.is(esi));
 
   // First, check if a write barrier is even needed. The tests below
   // catch stores of Smis and stores into young gen.
   Label done;
 
   // Skip barrier if writing a smi.
@@ skipping 1749 matching lines @@
 
   // Check that the code was patched as expected.
   ASSERT(masm_.pc_ == address_ + size_);
   ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32