Support Smi in CompareIDAndBranch

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 d15fe7ae2828a7c51271b6fc6a59f4d77f2b4a47..228ece926c5f01794a7b7392e3fd4d034a4a3912 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -2414,11 +2414,19 @@ void LCodeGen::DoCmpIDAndBranch(LCmpIDAndBranch* instr) {
       __ b(vs, chunk_->GetAssemblyLabel(false_block));
     } else {
       if (right->IsConstantOperand()) {
-        __ cmp(ToRegister(left),
-               Operand(ToInteger32(LConstantOperand::cast(right))));
+        int32_t value = ToInteger32(LConstantOperand::cast(right));
+        if (instr->hydrogen_value()->representation().IsSmi()) {
+          __ cmp(ToRegister(left), Operand(Smi::FromInt(value)));
+        } else {
+          __ cmp(ToRegister(left), Operand(value));
+        }
       } else if (left->IsConstantOperand()) {
-        __ cmp(ToRegister(right),
-               Operand(ToInteger32(LConstantOperand::cast(left))));
+        int32_t value = ToInteger32(LConstantOperand::cast(left));
+        if (instr->hydrogen_value()->representation().IsSmi()) {
+          __ cmp(ToRegister(right), Operand(Smi::FromInt(value)));
+        } else {
+          __ cmp(ToRegister(right), Operand(value));
+        }
         // We transposed the operands. Reverse the condition.
         cond = ReverseCondition(cond);
       } else {