Extract LoadAccessor into a masm function.

src/mips64/macro-assembler-mips64.cc

Index: src/mips64/macro-assembler-mips64.cc
diff --git a/src/mips64/macro-assembler-mips64.cc b/src/mips64/macro-assembler-mips64.cc
index 903247394301f5efff2b8b0489b14d70a2c03ca6..21cc3dc1eb29957742e4b23662bc18e1d1c08312 100644
--- a/src/mips64/macro-assembler-mips64.cc
+++ b/src/mips64/macro-assembler-mips64.cc
@@ -5929,6 +5929,19 @@ void MacroAssembler::EnumLength(Register dst, Register map) {
 }
 
 
+void MacroAssembler::LoadAccessor(Register dst, Register holder,
+                                  int accessor_index,
+                                  AccessorComponent accessor) {
+  ld(dst, FieldMemOperand(holder, HeapObject::kMapOffset));
+  LoadInstanceDescriptors(dst, dst);
+  ld(dst,
+     FieldMemOperand(dst, DescriptorArray::GetValueOffset(accessor_index)));
+  int offset = accessor == ACCESSOR_GETTER ? AccessorPair::kGetterOffset
+                                           : AccessorPair::kSetterOffset;
+  ld(dst, FieldMemOperand(dst, offset));
+}
+
+
 void MacroAssembler::CheckEnumCache(Register null_value, Label* call_runtime) {
   Register  empty_fixed_array_value = a6;
   LoadRoot(empty_fixed_array_value, Heap::kEmptyFixedArrayRootIndex);