ARM: Add support for temp double registers in Crankshaft.

src/lithium.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 64 matching lines @@
         case LUnallocated::FIXED_DOUBLE_REGISTER: {
           int reg_index = unalloc->fixed_register_index();
           const char* double_register_name =
               DoubleRegister::AllocationIndexToString(reg_index);
           stream->Add("(=%s)", double_register_name);
           break;
         }
         case LUnallocated::MUST_HAVE_REGISTER:
           stream->Add("(R)");
           break;
+        case LUnallocated::TEMP_DOUBLE_REGISTER:
+          stream->Add("(D)");
+          break;
         case LUnallocated::WRITABLE_REGISTER:
           stream->Add("(WR)");
           break;
         case LUnallocated::SAME_AS_FIRST_INPUT:
           stream->Add("(1)");
           break;
         case LUnallocated::ANY:
           stream->Add("(-)");
           break;
       }
@@ skipping 398 matching lines @@
 
 
 LPhase::~LPhase() {
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceLithium(name(), chunk_);
   }
 }
 
 
 } }  // namespace v8::internal