src/share/vm/opto/macroArrayCopy.cpp

*** 878,889 ****
      if (((src_off | dest_off) & (BytesPerLong-1)) == BytesPerInt &&
          ((src_off ^ dest_off) & (BytesPerLong-1)) == 0) {
        Node* sptr = basic_plus_adr(src,  src_off);
        Node* dptr = basic_plus_adr(dest, dest_off);
        uint alias_idx = C->get_alias_index(adr_type);
!       Node* sval = transform_later(LoadNode::make(_igvn, *ctrl, (*mem)->memory_at(alias_idx), sptr, adr_type, TypeInt::INT, T_INT, MemNode::unordered));
!       Node* st = transform_later(StoreNode::make(_igvn, *ctrl, (*mem)->memory_at(alias_idx), dptr, adr_type, sval, T_INT, MemNode::unordered));
        (*mem)->set_memory_at(alias_idx, st);
        src_off += BytesPerInt;
        dest_off += BytesPerInt;
      } else {
        return false;
--- 878,895 ----
      if (((src_off | dest_off) & (BytesPerLong-1)) == BytesPerInt &&
          ((src_off ^ dest_off) & (BytesPerLong-1)) == 0) {
        Node* sptr = basic_plus_adr(src,  src_off);
        Node* dptr = basic_plus_adr(dest, dest_off);
        uint alias_idx = C->get_alias_index(adr_type);
!       bool is_mismatched = (basic_elem_type != T_INT);
!       Node* sval = transform_later(
!           LoadNode::make(_igvn, *ctrl, (*mem)->memory_at(alias_idx), sptr, adr_type,
!                          TypeInt::INT, T_INT, MemNode::unordered, LoadNode::DependsOnlyOnTest,
!                          false /*unaligned*/, is_mismatched));
!       Node* st = transform_later(
!           StoreNode::make(_igvn, *ctrl, (*mem)->memory_at(alias_idx), dptr, adr_type,
!                           sval, T_INT, MemNode::unordered));
        (*mem)->set_memory_at(alias_idx, st);
        src_off += BytesPerInt;
        dest_off += BytesPerInt;
      } else {
        return false;