MIPS: Fix r19500 register usage to match to ASSERT.

src/mips64/stub-cache-mips64.cc

 // Copyright 2012 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/v8.h"
 
 #if V8_TARGET_ARCH_MIPS64
 
 #include "src/codegen.h"
 #include "src/ic-inl.h"
@@ skipping 1366 matching lines @@
     Code::StubType type,
     IcCheckType check) {
   Label miss;
 
   if (check == PROPERTY &&
       (kind() == Code::KEYED_LOAD_IC || kind() == Code::KEYED_STORE_IC)) {
     __ Branch(&miss, ne, this->name(), Operand(name));
   }
 
   Label number_case;
-  Register match = scratch1();
+  Register match = scratch2();
   Label* smi_target = IncludesNumberType(types) ? &number_case : &miss;
   __ JumpIfSmi(receiver(), smi_target, match);  // Reg match is 0 if Smi.
 
   // Polymorphic keyed stores may use the map register
-  Register map_reg = scratch2();
+  Register map_reg = scratch1();
   ASSERT(kind() != Code::KEYED_STORE_IC ||
          map_reg.is(KeyedStoreIC::MapRegister()));
 
   int receiver_count = types->length();
   int number_of_handled_maps = 0;
   __ ld(map_reg, FieldMemOperand(receiver(), HeapObject::kMapOffset));
   for (int current = 0; current < receiver_count; ++current) {
     Handle<HeapType> type = types->at(current);
     Handle<Map> map = IC::TypeToMap(*type, isolate());
     if (!map->is_deprecated()) {
@@ skipping 96 matching lines @@
 
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS64