get_frame_masks
return get_frame_masks(instance, frame, insn_idx);
insn = get_frame_masks(instance, frame, this_subprog_start);
insn = get_frame_masks(instance, frame, insn_idx);
succ_insn = get_frame_masks(instance, frame, succ->items[s]);
insn = get_frame_masks(instance, frame, this_subprog_start + i);
masks = get_frame_masks(instance, frameno, insn_idx);