Use IC register definitions in platform files.

src/arm64/code-stubs-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/bootstrapper.h"
 #include "src/code-stubs.h"
@@ skipping 84 matching lines @@
   // x2: length
   // x1: index (of last match)
   // x0: string
   Register registers[] = { x2, x1, x0 };
   descriptor->Initialize(
       ARRAY_SIZE(registers), registers,
       Runtime::FunctionForId(Runtime::kHiddenRegExpConstructResult)->entry);
 }
 
 
-void LoadFieldStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  // x0: receiver
-  Register registers[] = { x0 };
-  descriptor->Initialize(ARRAY_SIZE(registers), registers);
-}
-
-
-void KeyedLoadFieldStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  // x1: receiver
-  Register registers[] = { x1 };
-  descriptor->Initialize(ARRAY_SIZE(registers), registers);
-}
-
-
-void StringLengthStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { x0, x2 };
-  descriptor->Initialize(ARRAY_SIZE(registers), registers);
-}
-
-
-void KeyedStringLengthStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  Register registers[] = { x1, x0 };
-  descriptor->Initialize(ARRAY_SIZE(registers), registers);
-}
-
-
 void KeyedStoreFastElementStub::InitializeInterfaceDescriptor(
     CodeStubInterfaceDescriptor* descriptor) {
   // x2: receiver
   // x1: key
   // x0: value
   Register registers[] = { x2, x1, x0 };
   descriptor->Initialize(
       ARRAY_SIZE(registers), registers,
       FUNCTION_ADDR(KeyedStoreIC_MissFromStubFailure));
 }
@@ skipping 5324 matching lines @@
                               MemOperand(fp, 6 * kPointerSize),
                               NULL);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64