354 	struct symbol *sym1, *sym2;  in expr_join_or()  local
366 		sym1 = tmp->left.sym;  in expr_join_or()
368 		sym1 = e1->left.sym;  in expr_join_or()
375 	if (sym1 != sym2)  in expr_join_or()
377 	if (sym1->type != S_BOOLEAN && sym1->type != S_TRISTATE)  in expr_join_or()
379 	if (sym1->type == S_TRISTATE) {  in expr_join_or()
384 			return expr_alloc_comp(E_UNEQUAL, sym1, &symbol_no);  in expr_join_or()
390 			return expr_alloc_comp(E_UNEQUAL, sym1, &symbol_mod);  in expr_join_or()
396 			return expr_alloc_comp(E_UNEQUAL, sym1, &symbol_yes);  in expr_join_or()
399 	if (sym1->type == S_BOOLEAN && sym1 == sym2) {  in expr_join_or()
418 	struct symbol *sym1, *sym2;  in expr_join_and()  local
430 		sym1 = tmp->left.sym;  in expr_join_and()
432 		sym1 = e1->left.sym;  in expr_join_and()
439 	if (sym1 != sym2)  in expr_join_and()
441 	if (sym1->type != S_BOOLEAN && sym1->type != S_TRISTATE)  in expr_join_and()
447 		return expr_alloc_comp(E_EQUAL, sym1, &symbol_yes);  in expr_join_and()
452 		return expr_alloc_symbol(sym1);  in expr_join_and()
457 		return expr_alloc_comp(E_EQUAL, sym1, &symbol_yes);  in expr_join_and()
459 	if (sym1->type == S_TRISTATE) {  in expr_join_and()
464 				return sym2 != e2->right.sym ? expr_alloc_comp(E_EQUAL, sym1, sym2)  in expr_join_and()
471 				return sym2 != e1->right.sym ? expr_alloc_comp(E_EQUAL, sym1, sym2)  in expr_join_and()
478 			return expr_alloc_comp(E_EQUAL, sym1, &symbol_mod);  in expr_join_and()
484 			return expr_alloc_comp(E_EQUAL, sym1, &symbol_no);  in expr_join_and()
490 			return expr_alloc_comp(E_EQUAL, sym1, &symbol_yes);  in expr_join_and()