Provide baseline for new GC infrastructure.

src/ia32/codegen-ia32.cc

Index: src/ia32/codegen-ia32.cc
diff --git a/src/ia32/codegen-ia32.cc b/src/ia32/codegen-ia32.cc
index 022c117198eaccdcc4c02c3121235f891f6572e2..730229a32431a354bb5c87159c2046840b2212c5 100644
--- a/src/ia32/codegen-ia32.cc
+++ b/src/ia32/codegen-ia32.cc
@@ -7686,15 +7686,17 @@ void CodeGenerator::GenerateSwapElements(ZoneList<Expression*>* args) {
   __ mov(Operand(index2.reg(), 0), object.reg());
   __ mov(Operand(index1.reg(), 0), tmp2.reg());
 
-  Label done;
-  __ InNewSpace(tmp1.reg(), tmp2.reg(), equal, &done);
-  // Possible optimization: do a check that both values are Smis
-  // (or them and test against Smi mask.)
+  if (!FLAG_new_gc) {
+    Label done;
+    __ InNewSpace(tmp1.reg(), tmp2.reg(), equal, &done);
+    // Possible optimization: do a check that both values are Smis
+    // (or them and test against Smi mask.)
 
-  __ mov(tmp2.reg(), tmp1.reg());
-  __ RecordWriteHelper(tmp2.reg(), index1.reg(), object.reg());
-  __ RecordWriteHelper(tmp1.reg(), index2.reg(), object.reg());
-  __ bind(&done);
+    __ mov(tmp2.reg(), tmp1.reg());
+    __ RecordWriteHelper(tmp2.reg(), index1.reg(), object.reg());
+    __ RecordWriteHelper(tmp1.reg(), index2.reg(), object.reg());
+    __ bind(&done);
+  }
 
   deferred->BindExit();
   frame_->Push(Factory::undefined_value());
@@ -9632,17 +9634,21 @@ Result CodeGenerator::EmitNamedStore(Handle<String> name, bool is_contextual) {
 
     // Update the write barrier. To save instructions in the inlined
     // version we do not filter smis.
-    Label skip_write_barrier;
-    __ InNewSpace(receiver.reg(), value.reg(), equal, &skip_write_barrier);
-    int delta_to_record_write = masm_->SizeOfCodeGeneratedSince(&patch_site);
-    __ lea(scratch.reg(), Operand(receiver.reg(), offset));
-    __ RecordWriteHelper(receiver.reg(), scratch.reg(), value.reg());
-    if (FLAG_debug_code) {
-      __ mov(receiver.reg(), Immediate(BitCast<int32_t>(kZapValue)));
-      __ mov(value.reg(), Immediate(BitCast<int32_t>(kZapValue)));
-      __ mov(scratch.reg(), Immediate(BitCast<int32_t>(kZapValue)));
+    int delta_to_record_write = 0x0001;

[Erik Corry, 2010/12/13 19:58:28]

Why is this suddenly an unnamed constant?

+    if (!FLAG_new_gc) {
+      Label skip_write_barrier;
+      __ InNewSpace(receiver.reg(), value.reg(), equal, &skip_write_barrier);
+      delta_to_record_write = masm_->SizeOfCodeGeneratedSince(&patch_site);
+      __ lea(scratch.reg(), Operand(receiver.reg(), offset));
+      __ RecordWriteHelper(receiver.reg(), scratch.reg(), value.reg());
+      if (FLAG_debug_code) {
+        __ mov(receiver.reg(), Immediate(BitCast<int32_t>(kZapValue)));
+        __ mov(value.reg(), Immediate(BitCast<int32_t>(kZapValue)));
+        __ mov(scratch.reg(), Immediate(BitCast<int32_t>(kZapValue)));
+      }
+      __ bind(&skip_write_barrier);
     }
-    __ bind(&skip_write_barrier);
+
     value.Unuse();
     scratch.Unuse();
     receiver.Unuse();