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

src/ic/s390/ic-s390.cc

 // Copyright 2015 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.
 
 #if V8_TARGET_ARCH_S390
 
 #include "src/ic/ic.h"
 #include "src/codegen.h"
 #include "src/ic/ic-compiler.h"
 #include "src/ic/stub-cache.h"
@@ skipping 431 matching lines @@
           StoreWithVectorDescriptor::SlotRegister(),
           StoreWithVectorDescriptor::VectorRegister());
 }
 
 void KeyedStoreIC::GenerateMiss(MacroAssembler* masm) {
   StoreIC_PushArgs(masm);
 
   __ TailCallRuntime(Runtime::kKeyedStoreIC_Miss);
 }
 
+void KeyedStoreIC::GenerateSlow(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);
+}
+
 static void KeyedStoreGenerateMegamorphicHelper(
     MacroAssembler* masm, Label* fast_object, Label* fast_double, Label* slow,
     KeyedStoreCheckMap check_map, KeyedStoreIncrementLength increment_length,
     Register value, Register key, Register receiver, Register receiver_map,
     Register elements_map, Register elements) {
   Label transition_smi_elements;
   Label finish_object_store, non_double_value, transition_double_elements;
   Label fast_double_without_map_check;
 
   // Fast case: Do the store, could be either Object or double.
@@ skipping 404 matching lines @@
     patcher.masm()->brcl(cc, Operand((branch_instr & 0xffffffff) << 1));
   } else {
     DCHECK(false);
   }
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_S390