MIPS: Track heap objects.

src/mips/stub-cache-mips.cc

Index: src/mips/stub-cache-mips.cc
diff --git a/src/mips/stub-cache-mips.cc b/src/mips/stub-cache-mips.cc
index 80ab31a5e46124d236573fe2f325d52571214e95..5b36cc2fb30faf66ddd986a942999ff60cdc7af3 100644
--- a/src/mips/stub-cache-mips.cc
+++ b/src/mips/stub-cache-mips.cc
@@ -507,6 +507,8 @@ void StubCompiler::GenerateStoreTransition(MacroAssembler* masm,
 
   if (FLAG_track_fields && representation.IsSmi()) {
     __ JumpIfNotSmi(value_reg, miss_restore_name);
+  } else if (FLAG_track_heap_object_fields && representation.IsHeapObject()) {
+    __ JumpIfSmi(value_reg, miss_restore_name);
   } else if (FLAG_track_double_fields && representation.IsDouble()) {
     Label do_store, heap_number;
     __ LoadRoot(scratch3, Heap::kHeapNumberMapRootIndex);
@@ -677,6 +679,8 @@ void StubCompiler::GenerateStoreField(MacroAssembler* masm,
   ASSERT(!representation.IsNone());
   if (FLAG_track_fields && representation.IsSmi()) {
     __ JumpIfNotSmi(value_reg, miss_label);
+  } else if (FLAG_track_heap_object_fields && representation.IsHeapObject()) {
+    __ JumpIfSmi(value_reg, miss_label);
   } else if (FLAG_track_double_fields && representation.IsDouble()) {
     // Load the double storage.
     if (index < 0) {