While we could at least vectorize it on targets which support
re-alignment tokens we fail to do this because of imperfections in
alignment analysis. XFAIL when the HW cannot deal with misaligned
vector accesses for now.
Pushed.
2021-03-11 Richard Biener <rguent...@suse.de>
PR testsuite/97494
* gcc.dg/vect/pr97428.c: XFAIL on !vect_hw_misalign.
---
gcc/testsuite/gcc.dg/vect/pr97428.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/gcc/testsuite/gcc.dg/vect/pr97428.c
b/gcc/testsuite/gcc.dg/vect/pr97428.c
index 49d53738256..bbd743a76c4 100644
--- a/gcc/testsuite/gcc.dg/vect/pr97428.c
+++ b/gcc/testsuite/gcc.dg/vect/pr97428.c
@@ -40,5 +40,7 @@ void foo_i2(dcmlx4_t dst[], const dcmlx_t src[], int n)
load and store groups. */
/* { dg-final { scan-tree-dump "Detected interleaving load of size 8" "vect" }
} */
/* { dg-final { scan-tree-dump "Detected interleaving store of size 16" "vect"
} } */
-/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 2 "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-not "gap of 6 elements" "vect" } } */
--
2.26.2
