Re: [PATCH 17/20] target/arm: Fix sve_punpk_p vs odd vector lengths

[Peter Maydell <peter.maydell@linaro.org>]

On Sat, 15 Aug 2020 at 02:32, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> Wrote too much with punpk1 with vl % 512 != 0.
>
> Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>  target/arm/sve_helper.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c
> index b8651ae173..c983cd4356 100644
> --- a/target/arm/sve_helper.c
> +++ b/target/arm/sve_helper.c
> @@ -2104,11 +2104,11 @@ void HELPER(sve_punpk_p)(void *vd, void *vn, uint32_t pred_desc)
>              high = oprsz >> 1;
>          }
>
> -        if ((high & 3) == 0) {
> +        if ((oprsz & 7) == 0) {
>              uint32_t *n = vn;
>              high >>= 2;
>
> -            for (i = 0; i < DIV_ROUND_UP(oprsz, 8); i++) {
> +            for (i = 0; i < oprsz / 8; i++) {
>                  uint64_t nn = n[H4(high + i)];
>                  d[i] = expand_bits(nn, 0);
>              }
> --
> 2.25.1

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM