198 #define X_ATOM (BPF_MEMWORDS+1)  macro
548 			(BPF_RVAL(c) == BPF_X) ? X_ATOM : -1;  in atomuse()
556 		return (BPF_MODE(c) == BPF_IND) ? X_ATOM :  in atomuse()
563 		return X_ATOM;  in atomuse()
572 		return BPF_MISCOP(c) == BPF_TXA ? X_ATOM : A_ATOM;  in atomuse()
598 		return X_ATOM;  in atomdef()
605 		return BPF_MISCOP(s->code) == BPF_TAX ? X_ATOM : A_ATOM;  in atomdef()
634 				if (!ATOMELEM(def, X_ATOM))  in compute_local_ud()
635 					use |= ATOMMASK(X_ATOM);  in compute_local_ud()
660 				if (!ATOMELEM(def, X_ATOM))  in compute_local_ud()
661 					use |= ATOMMASK(X_ATOM);  in compute_local_ud()
959 			if (ATOMELEM(b->out_use, X_ATOM))  in opt_peep()
1044 			val = b->val[X_ATOM];  in opt_peep()
1131 	val = b->val[X_ATOM];  in opt_peep()
1203 		v = val[X_ATOM];  in opt_stmt()
1231 		vstore(s, &val[X_ATOM], v, alter);  in opt_stmt()
1236 		vstore(s, &val[X_ATOM], v, alter);  in opt_stmt()
1327 		if (alter && opt_state->vmap[val[X_ATOM]].is_const) {  in opt_stmt()
1329 				fold_op(opt_state, s, val[A_ATOM], val[X_ATOM]);  in opt_stmt()
1334 				s->k = opt_state->vmap[val[X_ATOM]].const_val;  in opt_stmt()
1360 				vstore(s, &val[A_ATOM], val[X_ATOM], alter);  in opt_stmt()
1375 		val[A_ATOM] = F(opt_state, s->code, val[A_ATOM], val[X_ATOM]);  in opt_stmt()
1379 		vstore(s, &val[A_ATOM], val[X_ATOM], alter);  in opt_stmt()
1397 		vstore(s, &val[X_ATOM], val[A_ATOM], alter);  in opt_stmt()
1411 		vstore(s, &val[X_ATOM], v, alter);  in opt_stmt()
1419 		vstore(s, &val[s->k], val[X_ATOM], alter);  in opt_stmt()
1432 			last[X_ATOM] = 0;  in deadstmt()
1531 	xval = b->val[X_ATOM];  in opt_blk()
1564 	      xval != VAL_UNKNOWN && b->val[X_ATOM] == xval) ||  in opt_blk()
1584 		b->oval = b->val[X_ATOM];  in opt_blk()
3013 	fprintf(out, "val[X]=%d", block->val[X_ATOM]);  in dot_dump_node()