Fix HInnerAllocatedObject to use an HValue for the offset.

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 4152 matching lines @@
   Register code_object = ToRegister(instr->code_object());
   __ add(code_object, code_object, Operand(Code::kHeaderSize - kHeapObjectTag));
   __ str(code_object,
          FieldMemOperand(function, JSFunction::kCodeEntryOffset));
 }
 
 
 void LCodeGen::DoInnerAllocatedObject(LInnerAllocatedObject* instr) {
   Register result = ToRegister(instr->result());
   Register base = ToRegister(instr->base_object());
-  __ add(result, base, Operand(instr->offset()));
+  if (instr->offset()->IsConstantOperand()) {
+    LConstantOperand* offset = LConstantOperand::cast(instr->offset());
+    __ add(result, base, Operand(ToInteger32(offset)));
+  } else {
+    Register offset = ToRegister(instr->offset());
+    __ add(result, base, offset);
+  }
 }
 
 
 void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
   Representation representation = instr->representation();
 
   Register object = ToRegister(instr->object());
   Register scratch = scratch0();
   HObjectAccess access = instr->hydrogen()->access();
   int offset = access.offset();
@@ skipping 1691 matching lines @@
   __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index));
   __ ldr(result, FieldMemOperand(scratch,
                                  FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal