Small cleanup refactoring of sp-to-fp offset and slot conversions

src/compiler/arm64/code-generator-arm64.cc

 // 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.
 
 #include "src/compiler/code-generator.h"
 
 #include "src/arm64/frames-arm64.h"
 #include "src/arm64/macro-assembler-arm64.h"
 #include "src/ast/scopes.h"
 #include "src/compiler/code-generator-impl.h"
@@ skipping 192 matching lines @@
     UNREACHABLE();
     return Operand(-1);
   }
 
   MemOperand ToMemOperand(InstructionOperand* op, MacroAssembler* masm) const {
     DCHECK_NOT_NULL(op);
     DCHECK(op->IsStackSlot() || op->IsDoubleStackSlot());
     FrameOffset offset = frame_access_state()->GetFrameOffset(
         AllocatedOperand::cast(op)->index());
     if (offset.from_frame_pointer()) {
-      int from_sp =
-          offset.offset() +
-          ((frame()->GetSpToFpSlotCount() + frame_access_state()->sp_delta()) *
-           kPointerSize);
+      int from_sp = offset.offset() + frame_access_state()->GetSPToFPOffset();
       // Convert FP-offsets to SP-offsets if it results in better code.
       if (Assembler::IsImmLSUnscaled(from_sp) ||
           Assembler::IsImmLSScaled(from_sp, LSDoubleWord)) {
         offset = FrameOffset::FromStackPointer(from_sp);
       }
     }
     return MemOperand(offset.from_stack_pointer() ? masm->StackPointer() : fp,
                       offset.offset());
   }
 };
@@ skipping 1538 matching lines @@
       padding_size -= kInstructionSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8