Track heap objects.

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 6ec5ed9a5c300640993447ce5e130d91813214bf..9ab2d412bebb975266dc9ac5ef7eb14cd106e08c 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -4239,6 +4239,19 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
         DeoptimizeIf(overflow, instr->environment());
       }
     }
+  } else if (FLAG_track_heap_object_fields && representation.IsHeapObject()) {
+    if (instr->value()->IsConstantOperand()) {
+      LConstantOperand* operand_value = LConstantOperand::cast(instr->value());
+      if (IsInteger32(operand_value)) {
+        DeoptimizeIf(no_condition, instr->environment());
+      }
+    } else {
+      if (!instr->hydrogen()->value()->type().IsHeapObject()) {
+        Register value = ToRegister(instr->value());
+        __ test(value, Immediate(kSmiTagMask));
+        DeoptimizeIf(zero, instr->environment());
+      }
+    }
   } else if (FLAG_track_double_fields && representation.IsDouble()) {
     ASSERT(transition.is_null());
     ASSERT(instr->is_in_object());