349 	struct symbol *sym1, *sym2;  in expr_join_or()  local
361 		sym1 = tmp->left.sym;  in expr_join_or()
363 		sym1 = e1->left.sym;  in expr_join_or()
370 	if (sym1 != sym2)  in expr_join_or()
372 	if (sym1->type != S_BOOLEAN && sym1->type != S_TRISTATE)  in expr_join_or()
374 	if (sym1->type == S_TRISTATE) {  in expr_join_or()
379 			return expr_alloc_comp(E_UNEQUAL, sym1, &symbol_no);  in expr_join_or()
385 			return expr_alloc_comp(E_UNEQUAL, sym1, &symbol_mod);  in expr_join_or()
391 			return expr_alloc_comp(E_UNEQUAL, sym1, &symbol_yes);  in expr_join_or()
394 	if (sym1->type == S_BOOLEAN && sym1 == sym2) {  in expr_join_or()
413 	struct symbol *sym1, *sym2;  in expr_join_and()  local
425 		sym1 = tmp->left.sym;  in expr_join_and()
427 		sym1 = e1->left.sym;  in expr_join_and()
434 	if (sym1 != sym2)  in expr_join_and()
436 	if (sym1->type != S_BOOLEAN && sym1->type != S_TRISTATE)  in expr_join_and()
442 		return expr_alloc_comp(E_EQUAL, sym1, &symbol_yes);  in expr_join_and()
447 		return expr_alloc_symbol(sym1);  in expr_join_and()
452 		return expr_alloc_comp(E_EQUAL, sym1, &symbol_yes);  in expr_join_and()
454 	if (sym1->type == S_TRISTATE) {  in expr_join_and()
459 				return sym2 != e2->right.sym ? expr_alloc_comp(E_EQUAL, sym1, sym2)  in expr_join_and()
466 				return sym2 != e1->right.sym ? expr_alloc_comp(E_EQUAL, sym1, sym2)  in expr_join_and()
473 			return expr_alloc_comp(E_EQUAL, sym1, &symbol_mod);  in expr_join_and()
479 			return expr_alloc_comp(E_EQUAL, sym1, &symbol_no);  in expr_join_and()
485 			return expr_alloc_comp(E_EQUAL, sym1, &symbol_yes);  in expr_join_and()