push (@flags, "OPF_NONOPTIMIZABLE") if !$op->{OPTIMIZABLE};
push (@flags, "OPF_EXTENSION") if $op->{EXTENSION};
push (@flags, "OPF_UNIMPLEMENTED") if $op->{UNIMPLEMENTED};
push (@flags, "OPF_NONOPTIMIZABLE") if !$op->{OPTIMIZABLE};
push (@flags, "OPF_EXTENSION") if $op->{EXTENSION};
push (@flags, "OPF_UNIMPLEMENTED") if $op->{UNIMPLEMENTED};