Revert of Merge cellspace into old pointer space

src/x64/code-stubs-x64.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_X64
 
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
@@ skipping 2736 matching lines @@
     __ movq(kScratchRegister, StackOperandForReturnAddress(0));
     __ subp(kScratchRegister, args.GetArgumentOperand(2));
     if (FLAG_debug_code) {
       __ movl(scratch, Immediate(kWordBeforeMapCheckValue));
       __ cmpl(Operand(kScratchRegister, kOffsetToMapCheckValue - 4), scratch);
       __ Assert(equal, kInstanceofStubUnexpectedCallSiteCacheCheck);
     }
     __ movp(kScratchRegister,
             Operand(kScratchRegister, kOffsetToMapCheckValue));
     __ movp(Operand(kScratchRegister, 0), map);
-
-    __ movp(r8, map);
-    // Scratch points at the cell payload. Calculate the start of the object.
-    __ subp(kScratchRegister, Immediate(Cell::kValueOffset - 1));
-    __ RecordWriteField(kScratchRegister, Cell::kValueOffset, r8, function,
-                        kDontSaveFPRegs, OMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
   }
 
   // Loop through the prototype chain looking for the function prototype.
   __ movp(scratch, FieldOperand(map, Map::kPrototypeOffset));
   Label loop, is_instance, is_not_instance;
   __ LoadRoot(kScratchRegister, Heap::kNullValueRootIndex);
   __ bind(&loop);
   __ cmpp(scratch, prototype);
   __ j(equal, &is_instance, Label::kNear);
   __ cmpp(scratch, kScratchRegister);
@@ skipping 2577 matching lines @@
   CallApiFunctionAndReturn(masm, api_function_address, thunk_ref, getter_arg,
                            kStackSpace, nullptr, return_value_operand, NULL);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64