[turbofan] Unify referencing of stack slots

src/deoptimizer.h

 // 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.
 
 #ifndef V8_DEOPTIMIZER_H_
 #define V8_DEOPTIMIZER_H_
 
 #include "src/allocation.h"
 #include "src/macro-assembler.h"
 
@@ skipping 258 matching lines @@
                                             FixedArray* literal_array,
                                             Address fp,
                                             RegisterValues* registers,
                                             FILE* trace_file);
 
   void UpdateFromPreviouslyMaterializedObjects();
   Handle<Object> MaterializeAt(int frame_index, int* value_index);
   Handle<Object> MaterializeObjectAt(int object_index);
   bool GetAdaptedArguments(Handle<JSObject>* result, int frame_index);
 
-  static int SlotOffsetFp(int slot_index);
-  static Address SlotAddress(Address fp, int slot_index);
   static uint32_t GetUInt32Slot(Address fp, int slot_index);
 
   std::vector<TranslatedFrame> frames_;
   Isolate* isolate_;
   Address stack_frame_pointer_;
   bool has_adapted_arguments_;
 
   struct ObjectPosition {
     int frame_index_;
     int value_index_;
@@ skipping 846 matching lines @@
   Object** expression_stack_;
   int source_position_;
 
   friend class Deoptimizer;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_DEOPTIMIZER_H_