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

src/interface-descriptors.cc

 // Copyright 2012 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/interface-descriptors.h"
 
 namespace v8 {
 namespace internal {
 
 namespace {
@@ skipping 510 matching lines @@
     function->InitParameter(i, AnyTagged(zone));
   }
   return function;
 }
 
 FunctionType*
 InterpreterDispatchDescriptor::BuildCallInterfaceDescriptorFunctionType(
     Isolate* isolate, int parameter_count) {
   Zone* zone = isolate->interface_descriptor_zone();
   FunctionType* function =
-      Type::Function(AnyTagged(zone), Type::Undefined(), 5, zone)->AsFunction();
+      Type::Function(AnyTagged(zone), Type::Undefined(), 4, zone)->AsFunction();
   function->InitParameter(kAccumulatorParameter, AnyTagged(zone));
-  function->InitParameter(kRegisterFileParameter, ExternalPointer(zone));
   function->InitParameter(kBytecodeOffsetParameter, UntaggedIntegral32(zone));
   function->InitParameter(kBytecodeArrayParameter, AnyTagged(zone));
   function->InitParameter(kDispatchTableParameter, AnyTagged(zone));
   return function;
 }
 
 }  // namespace internal
 }  // namespace v8