Re: [Qemu-arm] [PATCH 1/4] target/arm: Fix sign of sve_cmpeq_ppzw/sve_cmpne_ppzw

["Alex Bennée" <alex.bennee@linaro.org>]

Richard Henderson <richard.henderson@linaro.org> writes:

> The normal vector element is sign-extended before
> comparing with the wide vector element.
>
> Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

> ---
>  target/arm/sve_helper.c | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c
> index 54795c9194..9bd0694d55 100644
> --- a/target/arm/sve_helper.c
> +++ b/target/arm/sve_helper.c
> @@ -2436,13 +2436,13 @@ uint32_t HELPER(NAME)(void *vd, void *vn, void *vm, void *vg, uint32_t desc) \
>  #define DO_CMP_PPZW_S(NAME, TYPE, TYPEW, OP) \
>      DO_CMP_PPZW(NAME, TYPE, TYPEW, OP, H1_4, 0x1111111111111111ull)
>
> -DO_CMP_PPZW_B(sve_cmpeq_ppzw_b, uint8_t,  uint64_t, ==)
> -DO_CMP_PPZW_H(sve_cmpeq_ppzw_h, uint16_t, uint64_t, ==)
> -DO_CMP_PPZW_S(sve_cmpeq_ppzw_s, uint32_t, uint64_t, ==)
> +DO_CMP_PPZW_B(sve_cmpeq_ppzw_b, int8_t,  uint64_t, ==)
> +DO_CMP_PPZW_H(sve_cmpeq_ppzw_h, int16_t, uint64_t, ==)
> +DO_CMP_PPZW_S(sve_cmpeq_ppzw_s, int32_t, uint64_t, ==)
>
> -DO_CMP_PPZW_B(sve_cmpne_ppzw_b, uint8_t,  uint64_t, !=)
> -DO_CMP_PPZW_H(sve_cmpne_ppzw_h, uint16_t, uint64_t, !=)
> -DO_CMP_PPZW_S(sve_cmpne_ppzw_s, uint32_t, uint64_t, !=)
> +DO_CMP_PPZW_B(sve_cmpne_ppzw_b, int8_t,  uint64_t, !=)
> +DO_CMP_PPZW_H(sve_cmpne_ppzw_h, int16_t, uint64_t, !=)
> +DO_CMP_PPZW_S(sve_cmpne_ppzw_s, int32_t, uint64_t, !=)
>
>  DO_CMP_PPZW_B(sve_cmpgt_ppzw_b, int8_t,   int64_t, >)
>  DO_CMP_PPZW_H(sve_cmpgt_ppzw_h, int16_t,  int64_t, >)


--
Alex Bennée