On Fri, 30 Apr 2021 at 21:36, Richard Henderson
<richard.hender...@linaro.org> wrote:
>
> Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
> ---
> target/arm/helper-sve.h | 54 +++++++++++
> target/arm/sve.decode | 11 +++
> target/arm/sve_helper.c | 194 ++++++++++++++++++++++++++-----------
> target/arm/translate-sve.c | 7 ++
> 4 files changed, 210 insertions(+), 56 deletions(-)
>
> diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c
> index 7cc559d950..12a2078edb 100644
> --- a/target/arm/sve_helper.c
> +++ b/target/arm/sve_helper.c
> @@ -678,6 +678,135 @@ DO_ZPZZ(sve2_uhsub_zpzz_h, uint16_t, H1_2, DO_HSUB_BHS)
> DO_ZPZZ(sve2_uhsub_zpzz_s, uint32_t, H1_4, DO_HSUB_BHS)
> DO_ZPZZ_D(sve2_uhsub_zpzz_d, uint64_t, DO_HSUB_D)
>
> +static inline int32_t do_sat_bhs(int64_t val, int64_t min, int64_t max)
> +{
> + return val >= max ? max : val <= min ? min : val;
> +}
> +
> +#define DO_SQADD_B(n, m) do_sat_bhs((int64_t)n + m, INT8_MIN, INT8_MAX)
> +#define DO_SQADD_H(n, m) do_sat_bhs((int64_t)n + m, INT16_MIN, INT16_MAX)
> +#define DO_SQADD_S(n, m) do_sat_bhs((int64_t)n + m, INT32_MIN, INT32_MAX)
> +
> +static inline int64_t do_sqadd_d(int64_t n, int64_t m)
> +{
> + int64_t r = n + m;
> + if (((r ^ n) & ~(n ^ m)) < 0) {
> + /* Signed overflow. */
> + return r < 0 ? INT64_MAX : INT64_MIN;
> + }
> + return r;
> +}
> +
> +DO_ZPZZ(sve2_sqadd_zpzz_b, int8_t, H1_2, DO_SQADD_B)
H1_2...
Otherwise
Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
thanks
-- PMM
