This avoids looking for permute optimization when SLP cannot be applied.
Pushed.
2021-01-18 Richard Biener <rguent...@suse.de>
PR testsuite/97299
* gcc.dg/vect/slp-reduc-3.c: Guard VEC_PERM_EXPR scan.
---
gcc/testsuite/gcc.dg/vect/slp-reduc-3.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/gcc/testsuite/gcc.dg/vect/slp-reduc-3.c
b/gcc/testsuite/gcc.dg/vect/slp-reduc-3.c
index 4969fe82b25..fc875865208 100644
--- a/gcc/testsuite/gcc.dg/vect/slp-reduc-3.c
+++ b/gcc/testsuite/gcc.dg/vect/slp-reduc-3.c
@@ -60,4 +60,5 @@ int main (void)
/* { dg-final { scan-tree-dump-times "vect_recog_dot_prod_pattern: detected" 1
"vect" { xfail *-*-* } } } */
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { target {
vect_short_mult && { vect_widen_sum_hi_to_si && vect_unpack } } } } } */
/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" {
xfail { vect_widen_sum_hi_to_si_pattern || { ! vect_unpack } } } } } */
-/* { dg-final { scan-tree-dump-times "VEC_PERM_EXPR" 0 "vect" } } */
+/* Check we can elide permutes if SLP vectorizing the reduction. */
+/* { dg-final { scan-tree-dump-times "VEC_PERM_EXPR" 0 "vect" { xfail {
vect_widen_sum_hi_to_si_pattern || { ! vect_unpack } } } } } */
--
2.26.2
