[PATCH V2] test: Fix FAIL of pr97428.c for RVV

[Juzhe-Zhong <juzhe.zhong@rivai.ai>]

This test shows vectorizing stmts using SLP 4 times instead of 2 for RVV.
The reason is RVV has 512 bit vector.
Here is comparison between RVV ans ARM SVE:
https://godbolt.org/z/xc5KE5rPs

Confirm GCN also matches 4 SLP. This patch is passed on both GCN and RVV.

Ok for trunk ?

gcc/testsuite/ChangeLog:

	* gcc.dg/vect/pr97428.c: Adapt for RVV and GCN.

---
 gcc/testsuite/gcc.dg/vect/pr97428.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gcc/testsuite/gcc.dg/vect/pr97428.c b/gcc/testsuite/gcc.dg/vect/pr97428.c
index ad6416096aa..f77adb1be97 100644
--- a/gcc/testsuite/gcc.dg/vect/pr97428.c
+++ b/gcc/testsuite/gcc.dg/vect/pr97428.c
@@ -43,5 +43,6 @@ void foo_i2(dcmlx4_t dst[], const dcmlx_t src[], int n)
 /* { dg-final { scan-tree-dump "Detected interleaving store of size 16" "vect" } } */
 /* We're not able to peel & apply re-aligning to make accesses well-aligned for !vect_hw_misalign,
    but we could by peeling the stores for alignment and applying re-aligning loads.  */
-/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 2 "vect" { xfail { ! vect_hw_misalign } } } } */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 2 "vect" { target { { vect_hw_misalign } && { ! vect512 } } } } } */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 4 "vect" { target { vect512 } } } } */
 /* { dg-final { scan-tree-dump-not "gap of 6 elements" "vect" } } */
-- 
2.36.3