tree-optimization/95582 - fix vector pattern with bool conversions

The pattern recognizer fends off against recognizing conversions
from VECT_SCALAR_BOOLEAN_TYPE_P to precision one types but what
it really needs to fend off is conversions between
VECT_SCALAR_BOOLEAN_TYPE_P types - the Ada FE uses an 8 bit
boolean type that satisfies this predicate.

2020-12-11  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/95582
	* tree-vect-patterns.c (vect_recog_bool_pattern): Check
	for VECT_SCALAR_BOOLEAN_TYPE_P, not just precision one.

diff --git a/gcc/tree-vect-patterns.c b/gcc/tree-vect-patterns.c
index f2ce75a..bf57c49 100644 (file)
--- a/gcc/tree-vect-patterns.c
+++ b/gcc/tree-vect-patterns.c
@@ -4067,7 +4067,7 @@ vect_recog_bool_pattern (vec_info *vinfo,
       || rhs_code == VIEW_CONVERT_EXPR)
     {
       if (! INTEGRAL_TYPE_P (TREE_TYPE (lhs))
-         || TYPE_PRECISION (TREE_TYPE (lhs)) == 1)
+         || VECT_SCALAR_BOOLEAN_TYPE_P (TREE_TYPE (lhs)))
        return NULL;
       vectype = get_vectype_for_scalar_type (vinfo, TREE_TYPE (lhs));
       if (vectype == NULL_TREE)