Re: [PATCH v4 09/10] This patch adds a guard for VNx1 vectors that are present in ports like riscv.

[Kito Cheng <kito.cheng@gmail.com>]

I would prefer drop this patch from this patch series since I believe
https://patchwork.ozlabs.org/project/gcc/patch/20230414014518.15458-1-juzhe.zhong@rivai.ai/
is the right fix for this issue.

On Tue, Apr 18, 2023 at 2:40 AM Michael Collison <collison@rivosinc.com> wrote:
>
> From: Kevin Lee <kevinl@rivosinc.com>
>
> Kevin Lee <kevinl@rivosinc.com>
> gcc/ChangeLog:
>
>         * tree-vect-data-refs.cc (vect_grouped_store_supported): Add new
> condition
> ---
>  gcc/tree-vect-data-refs.cc | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/gcc/tree-vect-data-refs.cc b/gcc/tree-vect-data-refs.cc
> index 8daf7bd7dd3..df393ba723d 100644
> --- a/gcc/tree-vect-data-refs.cc
> +++ b/gcc/tree-vect-data-refs.cc
> @@ -5399,6 +5399,8 @@ vect_grouped_store_supported (tree vectype, unsigned HOST_WIDE_INT count)
>           poly_uint64 nelt = GET_MODE_NUNITS (mode);
>
>           /* The encoding has 2 interleaved stepped patterns.  */
> +    if(!multiple_p (nelt, 2))
> +      return false;
>           vec_perm_builder sel (nelt, 2, 3);
>           sel.quick_grow (6);
>           for (i = 0; i < 3; i++)
> --
> 2.34.1
>