clear_overlapping_stack_slots
clear_overlapping_stack_slots(at_stack_out, insn->off, sz, 1);
clear_overlapping_stack_slots(at_stack_out, 0, sz, cnt);
clear_overlapping_stack_slots(at_stack_out, 0, sz, 0);
clear_overlapping_stack_slots(at_stack_out, fp_off, sz, cnt);