Support Smi in CompareIDAndBranch

src/arm/lithium-codegen-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2396 matching lines @@
   } else {
     if (instr->is_double()) {
       // Compare left and right operands as doubles and load the
       // resulting flags into the normal status register.
       __ VFPCompareAndSetFlags(ToDoubleRegister(left), ToDoubleRegister(right));
       // If a NaN is involved, i.e. the result is unordered (V set),
       // jump to false block label.
       __ 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 {
         __ cmp(ToRegister(left), ToRegister(right));
       }
     }
     EmitBranch(true_block, false_block, cond);
   }
 }
 
@@ skipping 3540 matching lines @@
   __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index));
   __ ldr(result, FieldMemOperand(scratch,
                                  FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal