Fix last-minute thinko that I snuck into the last change....

src/arm/codegen-arm.cc

 // Copyright 2010 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 851 matching lines @@
     case Token::BIT_AND:
     case Token::BIT_XOR:
       if (inline_smi) {
         bool rhs_is_smi = frame_->KnownSmiAt(0);
         bool lhs_is_smi = frame_->KnownSmiAt(1);
         Register rhs = frame_->PopToRegister();
         Register lhs = frame_->PopToRegister(rhs);
         Register smi_test_reg;
         Condition cond;
         if (!rhs_is_smi || !lhs_is_smi) {
-          if (!rhs_is_smi) {
+          if (rhs_is_smi) {
+            smi_test_reg = lhs;
+          } else if (lhs_is_smi) {
             smi_test_reg = rhs;
-          } else if (!lhs_is_smi) {
-            smi_test_reg = lhs;
           } else {
             smi_test_reg = VirtualFrame::scratch0();
             __ orr(smi_test_reg, rhs, Operand(lhs));
           }
           // Check they are both Smis.
           __ tst(smi_test_reg, Operand(kSmiTagMask));
           cond = eq;
         } else {
           cond = al;
         }
@@ skipping 9610 matching lines @@
   __ bind(&string_add_runtime);
   __ TailCallRuntime(Runtime::kStringAdd, 2, 1);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM