On Sun, 8 Oct 2023, Juzhe-Zhong wrote:
> As this showed: https://godbolt.org/z/3K9oK7fx3
>
> ARM SVE 2 times for FOLD_EXTRACT_LAST wheras RVV 4 times.
>
> This is because RISC-V doesn't enable vec_pack_trunc so we will failed
> conversion and fold_extract_last at the first time analysis.
> Then we succeed at the second time.
>
> So RVV has 4 times of showing "FOLD_EXTRACT_LAST:.
OK
> gcc/testsuite/ChangeLog:
>
> * gcc.dg/vect/vect-cond-reduc-4.c: Add vect_pack_trunc variant.
>
> ---
> gcc/testsuite/gcc.dg/vect/vect-cond-reduc-4.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/gcc/testsuite/gcc.dg/vect/vect-cond-reduc-4.c
> b/gcc/testsuite/gcc.dg/vect/vect-cond-reduc-4.c
> index 8820075b1dc..8ea8c538713 100644
> --- a/gcc/testsuite/gcc.dg/vect/vect-cond-reduc-4.c
> +++ b/gcc/testsuite/gcc.dg/vect/vect-cond-reduc-4.c
> @@ -42,6 +42,7 @@ main (void)
> }
>
> /* { dg-final { scan-tree-dump-times "LOOP VECTORIZED" 2 "vect" } } */
> -/* { dg-final { scan-tree-dump-times "optimizing condition reduction with
> FOLD_EXTRACT_LAST" 2 "vect" { target vect_fold_extract_last } } } */
> +/* { dg-final { scan-tree-dump-times "optimizing condition reduction with
> FOLD_EXTRACT_LAST" 2 "vect" { target { vect_fold_extract_last &&
> vect_pack_trunc } } } } */
> +/* { dg-final { scan-tree-dump-times "optimizing condition reduction with
> FOLD_EXTRACT_LAST" 4 "vect" { target { { vect_fold_extract_last } && { !
> vect_pack_trunc } } } } } */
> /* { dg-final { scan-tree-dump-times "condition expression based on integer
> induction." 2 "vect" { target { ! vect_fold_extract_last } } } } */
>
>
--
Richard Biener <rguent...@suse.de>
SUSE Software Solutions Germany GmbH,
Frankenstrasse 146, 90461 Nuernberg, Germany;
GF: Ivo Totev, Andrew McDonald, Werner Knoblich; (HRB 36809, AG Nuernberg)
