Extract LoadAccessor into a masm function.

src/x64/macro-assembler-x64.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/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
@@ skipping 3395 matching lines @@
 
 
 void MacroAssembler::EnumLength(Register dst, Register map) {
   STATIC_ASSERT(Map::EnumLengthBits::kShift == 0);
   movl(dst, FieldOperand(map, Map::kBitField3Offset));
   andl(dst, Immediate(Map::EnumLengthBits::kMask));
   Integer32ToSmi(dst, dst);
 }
 
 
+void MacroAssembler::LoadAccessor(Register dst, Register holder,
+                                  int accessor_index,
+                                  AccessorComponent accessor) {
+  movp(dst, FieldOperand(holder, HeapObject::kMapOffset));
+  LoadInstanceDescriptors(dst, dst);
+  movp(dst, FieldOperand(dst, DescriptorArray::GetValueOffset(accessor_index)));
+  int offset = accessor == ACCESSOR_GETTER ? AccessorPair::kGetterOffset
+                                           : AccessorPair::kSetterOffset;
+  movp(dst, FieldOperand(dst, offset));
+}
+
+
 void MacroAssembler::DispatchWeakMap(Register obj, Register scratch1,
                                      Register scratch2, Handle<WeakCell> cell,
                                      Handle<Code> success,
                                      SmiCheckType smi_check_type) {
   Label fail;
   if (smi_check_type == DO_SMI_CHECK) {
     JumpIfSmi(obj, &fail);
   }
   movq(scratch1, FieldOperand(obj, HeapObject::kMapOffset));
   CmpWeakValue(scratch1, cell, scratch2);
@@ skipping 1753 matching lines @@
   if (mag.shift > 0) sarl(rdx, Immediate(mag.shift));
   movl(rax, dividend);
   shrl(rax, Immediate(31));
   addl(rdx, rax);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64