With the intent to rely on vec_cond_mask and vec_cmp patterns
comparisons do not need rewriting into COND_EXPRs that eventually
combine to vec_cond{u,eq,}.
Bootstrap and regtest running on x86_64-unknown-linux-gnu.
* tree-vect-patterns.cc (check_bool_pattern): For comparisons
we do nothing if we can expand them or we can't replace them
with a ? -1 : 0 condition - but the latter would require
expanding the comparison which we proved we can't. So do
nothing, aka not think vec_cond{u,eq,} will save us.
---
gcc/tree-vect-patterns.cc | 37 +------------------------------------
1 file changed, 1 insertion(+), 36 deletions(-)
diff --git a/gcc/tree-vect-patterns.cc b/gcc/tree-vect-patterns.cc
index 46aa3129bb3..a6d246f570c 100644
--- a/gcc/tree-vect-patterns.cc
+++ b/gcc/tree-vect-patterns.cc
@@ -5610,42 +5610,7 @@ check_bool_pattern (tree var, vec_info *vinfo,
hash_set<gimple *> &stmts)
break;
default:
- if (TREE_CODE_CLASS (rhs_code) == tcc_comparison)
- {
- tree vecitype, comp_vectype;
-
- /* If the comparison can throw, then is_gimple_condexpr will be
- false and we can't make a COND_EXPR/VEC_COND_EXPR out of it. */
- if (stmt_could_throw_p (cfun, def_stmt))
- return false;
-
- comp_vectype = get_vectype_for_scalar_type (vinfo, TREE_TYPE (rhs1));
- if (comp_vectype == NULL_TREE)
- return false;
-
- tree mask_type = get_mask_type_for_scalar_type (vinfo,
- TREE_TYPE (rhs1));
- if (mask_type
- && expand_vec_cmp_expr_p (comp_vectype, mask_type, rhs_code))
- return false;
-
- if (TREE_CODE (TREE_TYPE (rhs1)) != INTEGER_TYPE)
- {
- scalar_mode mode = SCALAR_TYPE_MODE (TREE_TYPE (rhs1));
- tree itype
- = build_nonstandard_integer_type (GET_MODE_BITSIZE (mode), 1);
- vecitype = get_vectype_for_scalar_type (vinfo, itype);
- if (vecitype == NULL_TREE)
- return false;
- }
- else
- vecitype = comp_vectype;
- if (! expand_vec_cond_expr_p (vecitype, comp_vectype, rhs_code))
- return false;
- }
- else
- return false;
- break;
+ return false;
}
bool res = stmts.add (def_stmt);
--
2.43.0
