Fixes bug in LoadIndexedInstr on ARM.

runtime/vm/intermediate_language_arm.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_ARM.
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/intermediate_language.h"
 
 #include "vm/cpu.h"
@@ skipping 1265 matching lines @@
         break;
       default:
         UNREACHABLE();
     }
     return;
   }
 
   if ((representation() == kUnboxedUint32) ||
       (representation() == kUnboxedInt32)) {
     Register result = locs()->out(0).reg();
-    if ((index_scale() == 1) && index.IsRegister()) {
-      __ SmiUntag(index.reg());
-    }
     switch (class_id()) {
       case kTypedDataInt32ArrayCid:
         ASSERT(representation() == kUnboxedInt32);
         __ ldr(result, element_address);
       break;
       case kTypedDataUint32ArrayCid:
         ASSERT(representation() == kUnboxedUint32);
         __ ldr(result, element_address);
       break;
       default:
@@ skipping 5579 matching lines @@
                                 1,
                                 locs());
   __ Drop(1);
   __ Pop(result);
 }
 
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM