Use a register spec for StoreIC and KeyedStoreIC.

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
diff --git a/src/arm/lithium-arm.cc b/src/arm/lithium-arm.cc
index 21fd7837a688bcc5b8897390d264bdabd62f328f..90ff02394a68fd295f3840bc4bbb5efb1ad29771 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -2255,9 +2255,9 @@ LInstruction* LChunkBuilder::DoStoreKeyed(HStoreKeyed* instr) {
 
 LInstruction* LChunkBuilder::DoStoreKeyedGeneric(HStoreKeyedGeneric* instr) {
   LOperand* context = UseFixed(instr->context(), cp);
-  LOperand* obj = UseFixed(instr->object(), r2);
-  LOperand* key = UseFixed(instr->key(), r1);
-  LOperand* val = UseFixed(instr->value(), r0);
+  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());
@@ -2331,8 +2331,8 @@ LInstruction* LChunkBuilder::DoStoreNamedField(HStoreNamedField* instr) {
 
 LInstruction* LChunkBuilder::DoStoreNamedGeneric(HStoreNamedGeneric* instr) {
   LOperand* context = UseFixed(instr->context(), cp);
-  LOperand* obj = UseFixed(instr->object(), r1);
-  LOperand* val = UseFixed(instr->value(), r0);
+  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);