testsuite/97299 - fix test condition of gcc.dg/vect/slp-reduc-3.c

This avoids looking for permute optimization when SLP cannot be applied.

2021-01-18  Richard Biener  <rguenther@suse.de>

	PR testsuite/97299
	* gcc.dg/vect/slp-reduc-3.c: Guard VEC_PERM_EXPR scan.

diff --git a/gcc/testsuite/gcc.dg/vect/slp-reduc-3.c b/gcc/testsuite/gcc.dg/vect/slp-reduc-3.c
index 4969fe82b257f75db27eb1f1ba4b848e3428697a..fc875865208a0db31db39fd6d67b4d6a27ed3ed2 100644 (file)
--- 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 } } } } } */