Provide baseline for new GC infrastructure.

src/ia32/macro-assembler-ia32.cc

Index: src/ia32/macro-assembler-ia32.cc
diff --git a/src/ia32/macro-assembler-ia32.cc b/src/ia32/macro-assembler-ia32.cc
index 6c51d6859c291f4d392f0695f05b0f18ac0f1bcc..54c0bc774db48e79bbfda592fb1a5a7287f65c85 100644
--- a/src/ia32/macro-assembler-ia32.cc
+++ b/src/ia32/macro-assembler-ia32.cc
@@ -52,6 +52,8 @@ MacroAssembler::MacroAssembler(void* buffer, int size)
 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;
@@ -102,6 +104,8 @@ 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.
@@ -153,6 +157,8 @@ void MacroAssembler::RecordWrite(Register object,
 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.