[ic] Extract load IC proto array handlers handling to a separate stub.

src/s390/interface-descriptors-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/interface-descriptors.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 13 matching lines @@
   return r3;
 }
 const Register FastNewFunctionContextDescriptor::SlotsRegister() { return r2; }
 
 const Register LoadDescriptor::ReceiverRegister() { return r3; }
 const Register LoadDescriptor::NameRegister() { return r4; }
 const Register LoadDescriptor::SlotRegister() { return r2; }
 
 const Register LoadWithVectorDescriptor::VectorRegister() { return r5; }
 
+const Register LoadICProtoArrayDescriptor::HandlerRegister() { return r6; }
+
 const Register StoreDescriptor::ReceiverRegister() { return r3; }
 const Register StoreDescriptor::NameRegister() { return r4; }
 const Register StoreDescriptor::ValueRegister() { return r2; }
 const Register StoreDescriptor::SlotRegister() { return r6; }
 
 const Register StoreWithVectorDescriptor::VectorRegister() { return r5; }
 
 const Register StoreTransitionDescriptor::SlotRegister() { return r6; }
 const Register StoreTransitionDescriptor::VectorRegister() { return r5; }
 const Register StoreTransitionDescriptor::MapRegister() { return r7; }
@@ skipping 338 matching lines @@
       r3,  // the JSGeneratorObject to resume
       r4   // the resume mode (tagged)
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_S390