MIPS: Removed unused variables.

src/mips/lithium-codegen-mips.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 2814 matching lines @@
 void LCodeGen::DoDeclareGlobals(LDeclareGlobals* instr) {
   __ LoadHeapObject(scratch0(), instr->hydrogen()->pairs());
   __ li(scratch1(), Operand(Smi::FromInt(instr->hydrogen()->flags())));
   // The context is the first argument.
   __ Push(cp, scratch0(), scratch1());
   CallRuntime(Runtime::kDeclareGlobals, 3, instr);
 }
 
 
 void LCodeGen::DoGlobalObject(LGlobalObject* instr) {
-  Register context = ToRegister(instr->context());
   Register result = ToRegister(instr->result());
   __ lw(result, ContextOperand(cp, Context::GLOBAL_INDEX));
 }
 
 
 void LCodeGen::DoGlobalReceiver(LGlobalReceiver* instr) {
   Register global = ToRegister(instr->global());
   Register result = ToRegister(instr->result());
   __ lw(result, FieldMemOperand(global, GlobalObject::kGlobalReceiverOffset));
 }
@@ skipping 1303 matching lines @@
                    instr->hydrogen()->deoptimize_on_minus_zero(),
                    instr->environment());
 }
 
 
 void LCodeGen::DoDoubleToI(LDoubleToI* instr) {
   Register result_reg = ToRegister(instr->result());
   Register scratch1 = scratch0();
   Register scratch2 = ToRegister(instr->TempAt(0));
   DoubleRegister double_input = ToDoubleRegister(instr->InputAt(0));
-  DoubleRegister double_scratch = double_scratch0();
   FPURegister single_scratch = double_scratch0().low();
 
   if (instr->truncating()) {
     Register scratch3 = ToRegister(instr->TempAt(1));
     __ EmitECMATruncate(result_reg,
                         double_input,
                         single_scratch,
                         scratch1,
                         scratch2,
                         scratch3);
@@ skipping 942 matching lines @@
   __ Subu(scratch, result, scratch);
   __ lw(result, FieldMemOperand(scratch,
                                 FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal