MIPS: Use a register spec for StoreIC and KeyedStoreIC.

src/mips/lithium-mips.cc

Index: src/mips/lithium-mips.cc
diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index f264f6248ec7f4fe13ce40ad326d94c9d5d9c0db..0e0fea30e8e2920ab11640f7017286c66f479b59 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -2201,9 +2201,9 @@ LInstruction* LChunkBuilder::DoStoreKeyed(HStoreKeyed* instr) {
 
 LInstruction* LChunkBuilder::DoStoreKeyedGeneric(HStoreKeyedGeneric* instr) {
   LOperand* context = UseFixed(instr->context(), cp);
-  LOperand* obj = UseFixed(instr->object(), a2);
-  LOperand* key = UseFixed(instr->key(), a1);
-  LOperand* val = UseFixed(instr->value(), a0);
+  LOperand* obj = UseFixed(instr->object(), KeyedStoreIC::ReceiverRegister());
+  LOperand* key = UseFixed(instr->key(), KeyedStoreIC::NameRegister());
+  LOperand* val = UseFixed(instr->value(), KeyedStoreIC::ValueRegister());
 
   ASSERT(instr->object()->representation().IsTagged());
   ASSERT(instr->key()->representation().IsTagged());
@@ -2277,8 +2277,8 @@ LInstruction* LChunkBuilder::DoStoreNamedField(HStoreNamedField* instr) {
 
 LInstruction* LChunkBuilder::DoStoreNamedGeneric(HStoreNamedGeneric* instr) {
   LOperand* context = UseFixed(instr->context(), cp);
-  LOperand* obj = UseFixed(instr->object(), a1);
-  LOperand* val = UseFixed(instr->value(), a0);
+  LOperand* obj = UseFixed(instr->object(), StoreIC::ReceiverRegister());
+  LOperand* val = UseFixed(instr->value(), StoreIC::ValueRegister());
 
   LInstruction* result = new(zone()) LStoreNamedGeneric(context, obj, val);
   return MarkAsCall(result, instr);