Use a register spec for StoreIC and KeyedStoreIC.

src/ia32/lithium-ia32.cc

Index: src/ia32/lithium-ia32.cc
diff --git a/src/ia32/lithium-ia32.cc b/src/ia32/lithium-ia32.cc
index a528fe4e7311b5a552306c6f4db7fee17e1efa93..c408288363376ab956e27867cf0d8ddb2254d44c 100644
--- a/src/ia32/lithium-ia32.cc
+++ b/src/ia32/lithium-ia32.cc
@@ -2287,9 +2287,10 @@ LInstruction* LChunkBuilder::DoStoreKeyed(HStoreKeyed* instr) {
 
 LInstruction* LChunkBuilder::DoStoreKeyedGeneric(HStoreKeyedGeneric* instr) {
   LOperand* context = UseFixed(instr->context(), esi);
-  LOperand* object = UseFixed(instr->object(), edx);
-  LOperand* key = UseFixed(instr->key(), ecx);
-  LOperand* value = UseFixed(instr->value(), eax);
+  LOperand* object = UseFixed(instr->object(),
+                              KeyedStoreIC::ReceiverRegister());
+  LOperand* key = UseFixed(instr->key(), KeyedStoreIC::NameRegister());
+  LOperand* value = UseFixed(instr->value(), KeyedStoreIC::ValueRegister());
 
   ASSERT(instr->object()->representation().IsTagged());
   ASSERT(instr->key()->representation().IsTagged());
@@ -2391,8 +2392,8 @@ LInstruction* LChunkBuilder::DoStoreNamedField(HStoreNamedField* instr) {
 
 LInstruction* LChunkBuilder::DoStoreNamedGeneric(HStoreNamedGeneric* instr) {
   LOperand* context = UseFixed(instr->context(), esi);
-  LOperand* object = UseFixed(instr->object(), edx);
-  LOperand* value = UseFixed(instr->value(), eax);
+  LOperand* object = UseFixed(instr->object(), StoreIC::ReceiverRegister());
+  LOperand* value = UseFixed(instr->value(), StoreIC::ValueRegister());
 
   LStoreNamedGeneric* result =
       new(zone()) LStoreNamedGeneric(context, object, value);