A failure on sparc shows that the dump scan for dot-prod is fragile
enough. The following simply removes it given it serves no actual
purpose and adds comments in place.
Pushed.
* gcc.dg/vect/vect-reduc-dot-s8b.c: Remove scan for
dot_prod pattern matching.
---
gcc/testsuite/gcc.dg/vect/vect-reduc-dot-s8b.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/gcc/testsuite/gcc.dg/vect/vect-reduc-dot-s8b.c
b/gcc/testsuite/gcc.dg/vect/vect-reduc-dot-s8b.c
index 1603851033b..3096dc4850f 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-reduc-dot-s8b.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-reduc-dot-s8b.c
@@ -53,8 +53,9 @@ int main (void)
return 0;
}
-/* { dg-final { scan-tree-dump-times "vect_recog_dot_prod_pattern:
detected(?:(?!Analysis failed).)*Analysis succeeded" 1 "vect" } } */
+/* ??? In principle sdot_prodv<N>hiv<2xN>qi could also be used and would
+ take precedence. */
/* { dg-final { scan-tree-dump-times "vect_recog_widen_mult_pattern:
detected(?:(?!Analysis failed).)*Analysis succeeded" 1 "vect" { target
vect_widen_mult_qi_to_hi } } } */
-
+/* ??? And we can also vectorize this without widen-mult. */
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target
vect_widen_mult_qi_to_hi } } } */
--
2.51.0
