Fix register allocation bug in optimized code 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 "lib/error.h"
@@ skipping 1340 matching lines @@
       locs->set_in(2, ShouldEmitStoreBarrier()
                         ? Location::WritableRegister()
                         : Location::RegisterOrConstant(value()));
       break;
     case kExternalTypedDataUint8ArrayCid:
     case kExternalTypedDataUint8ClampedArrayCid:
     case kTypedDataInt8ArrayCid:
     case kTypedDataUint8ArrayCid:
     case kTypedDataUint8ClampedArrayCid:
     case kOneByteStringCid:
-      locs->set_in(2, Location::RegisterOrSmiConstant(value()));
-      break;
     case kTypedDataInt16ArrayCid:
     case kTypedDataUint16ArrayCid:
     case kTypedDataInt32ArrayCid:
     case kTypedDataUint32ArrayCid:
       locs->set_in(2, Location::WritableRegister());
       break;
     case kTypedDataFloat32ArrayCid:
     case kTypedDataFloat64ArrayCid:  // TODO(srdjan): Support Float64 constants.
     case kTypedDataFloat32x4ArrayCid:
       locs->set_in(2, Location::RequiresFpuRegister());
@@ skipping 2241 matching lines @@
   compiler->GenerateCall(token_pos(),
                          &label,
                          PcDescriptors::kOther,
                          locs());
   __ Drop(2);  // Discard type arguments and receiver.
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM