[Interpreter] Remove register file register and replace with LoadParentFramePointer.

src/interface-descriptors.h

 // Copyright 2014 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.
 
 #ifndef V8_CALL_INTERFACE_DESCRIPTOR_H_
 #define V8_CALL_INTERFACE_DESCRIPTOR_H_
 
 #include "src/assembler.h"
 #include "src/macro-assembler.h"
 
@@ skipping 777 matching lines @@
   static const Register ObjectRegister();
   static const Register KeyRegister();
 };
 
 class InterpreterDispatchDescriptor : public CallInterfaceDescriptor {
  public:
   DECLARE_DESCRIPTOR_WITH_CUSTOM_FUNCTION_TYPE(InterpreterDispatchDescriptor,
                                                CallInterfaceDescriptor)
 
   static const int kAccumulatorParameter = 0;
-  static const int kRegisterFileParameter = 1;
-  static const int kBytecodeOffsetParameter = 2;
-  static const int kBytecodeArrayParameter = 3;
-  static const int kDispatchTableParameter = 4;
-  static const int kContextParameter = 5;
+  static const int kBytecodeOffsetParameter = 1;
+  static const int kBytecodeArrayParameter = 2;
+  static const int kDispatchTableParameter = 3;
 };
 
 class InterpreterPushArgsAndCallDescriptor : public CallInterfaceDescriptor {
  public:
   DECLARE_DESCRIPTOR(InterpreterPushArgsAndCallDescriptor,
                      CallInterfaceDescriptor)
 };
 
 
 class InterpreterPushArgsAndConstructDescriptor
@@ skipping 29 matching lines @@
 }  // namespace v8
 
 
 #if V8_TARGET_ARCH_ARM64
 #include "src/arm64/interface-descriptors-arm64.h"
 #elif V8_TARGET_ARCH_ARM
 #include "src/arm/interface-descriptors-arm.h"
 #endif
 
 #endif  // V8_CALL_INTERFACE_DESCRIPTOR_H_