Reference: https://godbolt.org/z/G9jzf5Grh
RVV is able to vectorize this case using SLP. However, with
-fno-vect-cost-model,
RVV vectorize it by vec_load_lanes with stride 6.
gcc/testsuite/ChangeLog:
* gcc.dg/vect/fast-math-slp-38.c: Add ! vect_strided6.
---
gcc/testsuite/gcc.dg/vect/fast-math-slp-38.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/testsuite/gcc.dg/vect/fast-math-slp-38.c
b/gcc/testsuite/gcc.dg/vect/fast-math-slp-38.c
index 7c7acd5bab6..96751faae7f 100644
--- a/gcc/testsuite/gcc.dg/vect/fast-math-slp-38.c
+++ b/gcc/testsuite/gcc.dg/vect/fast-math-slp-38.c
@@ -18,4 +18,4 @@ foo (void)
}
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
-/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" }
} */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" {
target { ! vect_strided6 } } } } */
--
2.36.3
