[ic][mips][mips64] Ensure store handlers return value in proper register.

src/ic/mips64/handler-compiler-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.
 
 #if V8_TARGET_ARCH_MIPS64
 
 #include "src/ic/handler-compiler.h"
 
 #include "src/api-arguments.h"
 #include "src/field-type.h"
@@ skipping 645 matching lines @@
     __ LoadRoot(at, Heap::kTheHoleValueRootIndex);
     __ Branch(&miss, eq, result, Operand(at));
   }
 
   Counters* counters = isolate()->counters();
   __ IncrementCounter(counters->ic_named_load_global_stub(), 1, a1, a3);
   if (IC::ICUseVector(kind())) {
     DiscardVectorAndSlot();
   }
   __ Ret(USE_DELAY_SLOT);
-  __ mov(v0, result);
+  __ Move(v0, result);  // Ensure the stub returns correct value.
 
   FrontendFooter(name, &miss);
 
   // Return the generated code.
   return GetCode(kind(), name);
 }
 
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS64