Port inline in-object property stores from ia32 to x64.

src/ia32/codegen-ia32.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 5321 matching lines @@
         break;
       case ObjectLiteral::Property::MATERIALIZED_LITERAL:
         if (CompileTimeValue::IsCompileTimeValue(property->value())) break;
         // else fall through.
       case ObjectLiteral::Property::COMPUTED: {
         Handle<Object> key(property->key()->handle());
         if (key->IsSymbol()) {
           // Duplicate the object as the IC receiver.
           frame_->Dup();
           Load(property->value());
-          Result dummy = frame_->CallStoreIC(Handle<String>::cast(key), false);
+          Result ignored =
+              frame_->CallStoreIC(Handle<String>::cast(key), false);
           // A test eax instruction following the store IC call would
           // indicate the presence of an inlined version of the
           // store. Add a nop to indicate that there is no such
           // inlined version.
           __ nop();
-          dummy.Unuse();
           break;
         }
         // Fall through
       }
       case ObjectLiteral::Property::PROTOTYPE: {
         // Duplicate the object as an argument to the runtime call.
         frame_->Dup();
         Load(property->key());
         Load(property->value());
         Result ignored = frame_->CallRuntime(Runtime::kSetProperty, 3);
@@ skipping 8538 matching lines @@
   masm.GetCode(&desc);
   // Call the function from C++.
   return FUNCTION_CAST<MemCopyFunction>(buffer);
 }
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32