Use a register spec for StoreIC and KeyedStoreIC.

src/arm64/stub-cache-arm64.cc

 // Copyright 2013 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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/codegen.h"
 #include "src/ic-inl.h"
@@ skipping 1244 matching lines @@
 Register* KeyedLoadStubCompiler::registers() {
   // receiver, name, scratch1, scratch2, scratch3, scratch4.
   Register receiver = LoadIC::ReceiverRegister();
   Register name = LoadIC::NameRegister();
   static Register registers[] = { receiver, name, x3, x0, x4, x5 };
   return registers;
 }
 
 
 Register StoreStubCompiler::value() {
-  return x0;
+  return StoreIC::ValueRegister();
 }
 
 
 Register* StoreStubCompiler::registers() {
   // receiver, value, scratch1, scratch2, scratch3.
-  static Register registers[] = { x1, x2, x3, x4, x5 };
+  Register receiver = StoreIC::ReceiverRegister();
+  Register name = StoreIC::NameRegister();
+  static Register registers[] = { receiver, name, x3, x4, x5 };
   return registers;
 }
 
 
 Register* KeyedStoreStubCompiler::registers() {
   // receiver, name, scratch1, scratch2, scratch3.
-  static Register registers[] = { x2, x1, x3, x4, x5 };
+  Register receiver = KeyedStoreIC::ReceiverRegister();
+  Register name = KeyedStoreIC::NameRegister();
+  static Register registers[] = { receiver, name, x3, x4, x5 };
   return registers;
 }
 
 
 #undef __
 #define __ ACCESS_MASM(masm)
 
 void LoadStubCompiler::GenerateLoadViaGetter(MacroAssembler* masm,
                                              Handle<HeapType> type,
                                              Register receiver,
@@ skipping 180 matching lines @@
 
   // Miss case, call the runtime.
   __ Bind(&miss);
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64