https://gcc.gnu.org/g:e592ea8ddffb44bab52d36d9862bb39ffae4d144
commit r15-4004-ge592ea8ddffb44bab52d36d9862bb39ffae4d144
Author: Richard Biener <rguent...@suse.de>
Date: Tue Oct 1 15:17:18 2024 +0200
tree-optimization/116654 - missed dr_explicit_realign[_optimized] with SLP
With single-lane SLP we miss to use the power realing loads causing
some testsuite FAILs. r14-2430-g4736ddd11874fe exempted SLP of
non-grouped accesses because that could have been only splats
where the scheme isn't used anyway, but now with single-lane SLP
it can be contiguous accesses.
PR tree-optimization/116654
* tree-vect-data-refs.cc (vect_supportable_dr_alignment):
Treat non-grouped accesses like non-SLP.
Diff:
---
gcc/tree-vect-data-refs.cc | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/gcc/tree-vect-data-refs.cc b/gcc/tree-vect-data-refs.cc
index fe7fdec4ba0d..920e3c120a66 100644
--- a/gcc/tree-vect-data-refs.cc
+++ b/gcc/tree-vect-data-refs.cc
@@ -7170,11 +7170,11 @@ vect_supportable_dr_alignment (vec_info *vinfo,
dr_vec_info *dr_info,
same alignment, instead it depends on the SLP group size. */
if (loop_vinfo
&& STMT_SLP_TYPE (stmt_info)
- && (!STMT_VINFO_GROUPED_ACCESS (stmt_info)
- || !multiple_p (LOOP_VINFO_VECT_FACTOR (loop_vinfo)
- * (DR_GROUP_SIZE
- (DR_GROUP_FIRST_ELEMENT (stmt_info))),
- TYPE_VECTOR_SUBPARTS (vectype))))
+ && STMT_VINFO_GROUPED_ACCESS (stmt_info)
+ && !multiple_p (LOOP_VINFO_VECT_FACTOR (loop_vinfo)
+ * (DR_GROUP_SIZE
+ (DR_GROUP_FIRST_ELEMENT (stmt_info))),
+ TYPE_VECTOR_SUBPARTS (vectype)))
;
else if (!loop_vinfo
|| (nested_in_vect_loop
