MIPS64: Fix after [turbofan] Avoid unnecessary write barriers and improve code generation.

src/compiler/mips64/code-generator-mips64.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/code-generator.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/osr.h"
 #include "src/mips/macro-assembler-mips.h"
@@ skipping 223 matching lines @@
       __ CheckPageFlag(value_, scratch0_,
                        MemoryChunk::kPointersToHereAreInterestingMask, eq,
                        exit());
     }
     SaveFPRegsMode const save_fp_mode =
         frame()->DidAllocateDoubleRegisters() ? kSaveFPRegs : kDontSaveFPRegs;
     // TODO(turbofan): Once we get frame elision working, we need to save
     // and restore lr properly here if the frame was elided.
     RecordWriteStub stub(isolate(), object_, scratch0_, scratch1_,
                          EMIT_REMEMBERED_SET, save_fp_mode);
-    __ Addu(scratch1_, object_, index_);
+    __ Daddu(scratch1_, object_, index_);
     __ CallStub(&stub);
   }
 
  private:
   Register const object_;
   Register const index_;
   Register const value_;
   Register const scratch0_;
   Register const scratch1_;
   RecordWriteMode const mode_;
@@ skipping 1406 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8