Update the gap resolver to support Smi constants.

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 228ece926c5f01794a7b7392e3fd4d034a4a3912..cb2281dd89c47f88bf259b95951bdef4313a9a57 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -539,6 +539,12 @@ int LCodeGen::ToInteger32(LConstantOperand* op) const {
 }
 
 
+Smi* LCodeGen::ToSmi(LConstantOperand* op) const {
+  HConstant* constant = chunk_->LookupConstant(op);
+  return Smi::FromInt(constant->Integer32Value());
+}
+
+
 double LCodeGen::ToDouble(LConstantOperand* op) const {
   HConstant* constant = chunk_->LookupConstant(op);
   ASSERT(constant->HasDoubleValue());