[ic] Move KeyedStoreIC::GenerateSlow() to ic-XXX.cc to avoid code duplication.

src/ic/s390/handler-compiler-s390.cc

Index: src/ic/s390/handler-compiler-s390.cc
diff --git a/src/ic/s390/handler-compiler-s390.cc b/src/ic/s390/handler-compiler-s390.cc
index b399c5a60102cea765e22b8efc45ba226da64b30..9b011316e390e93e1b28adeba2c388a8b131e44c 100644
--- a/src/ic/s390/handler-compiler-s390.cc
+++ b/src/ic/s390/handler-compiler-s390.cc
@@ -310,21 +310,6 @@ void PropertyHandlerCompiler::GenerateApiAccessorCall(
   __ TailCallStub(&stub);
 }
 
-static void StoreIC_PushArgs(MacroAssembler* masm) {
-  __ Push(StoreDescriptor::ReceiverRegister(), StoreDescriptor::NameRegister(),
-          StoreDescriptor::ValueRegister(),
-          StoreWithVectorDescriptor::SlotRegister(),
-          StoreWithVectorDescriptor::VectorRegister());
-}
-
-void ElementHandlerCompiler::GenerateStoreSlow(MacroAssembler* masm) {
-  StoreIC_PushArgs(masm);
-
-  // The slow case calls into the runtime to complete the store without causing
-  // an IC miss that would otherwise cause a transition to the generic stub.
-  __ TailCallRuntime(Runtime::kKeyedStoreIC_Slow);
-}
-
 #undef __
 #define __ ACCESS_MASM(masm())