Fix simmips build, remove unnecessary temp register.

runtime/vm/intermediate_language_mips.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_MIPS.
 #if defined(TARGET_ARCH_MIPS)
 
 #include "vm/intermediate_language.h"
 
 #include "lib/error.h"
@@ skipping 3075 matching lines @@
 
 
 LocationSummary* MathMinMaxInstr::MakeLocationSummary() const {
   if (result_cid() == kDoubleCid) {
     const intptr_t kNumInputs = 2;
     const intptr_t kNumTemps = 1;
     LocationSummary* summary =
         new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
     summary->set_in(0, Location::RequiresFpuRegister());
     summary->set_in(1, Location::RequiresFpuRegister());
-    summary->set_temp(0, Location::RequiresRegister());
     summary->set_out(Location::RequiresFpuRegister());
     return summary;
   }
   ASSERT(result_cid() == kSmiCid);
   UNIMPLEMENTED();
   return NULL;
 }
 
 
 void MathMinMaxInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   if (result_cid() == kDoubleCid) {
     Label done, is_nan, is_left;
     DRegister left = locs()->in(0).fpu_reg();
     DRegister right = locs()->in(1).fpu_reg();
     DRegister result = locs()->out().fpu_reg();
-    Register temp = locs()->temp(0).reg();
     __ cund(left, right);
     __ bc1t(&is_nan);
     if (op_kind() == MethodRecognizer::kMathMin) {
       __ coltd(left, right);
     } else {
       ASSERT(op_kind() == MethodRecognizer::kMathMax);
       __ coltd(right, left);
     }
     // TODO(zra): Add conditional moves.
     __ bc1t(&is_left);
@@ skipping 700 matching lines @@
   compiler->GenerateCall(token_pos(),
                          &label,
                          PcDescriptors::kOther,
                          locs());
   __ Drop(2);  // Discard type arguments and receiver.
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS