Ensure the constant operand for heap-object store-named-field is not a smi.

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 7c0df1847a05ca3d3a5362ff6f82150f4273a35f..8441274b620a67f0416c3bf37471891135b9dfa8 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -4351,7 +4351,7 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
   } else if (representation.IsHeapObject()) {
     if (instr->value()->IsConstantOperand()) {
       LConstantOperand* operand_value = LConstantOperand::cast(instr->value());
-      if (IsInteger32(operand_value)) {
+      if (chunk_->LookupConstant(operand_value)->HasSmiValue()) {
         DeoptimizeIf(no_condition, instr->environment());
       }
     } else {