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Re: [PATCH 5/7] target/alpha: Write to fpcr_flush_to_zero once


From: Alex Bennée
Subject: Re: [PATCH 5/7] target/alpha: Write to fpcr_flush_to_zero once
Date: Mon, 23 Sep 2019 17:38:22 +0100
User-agent: mu4e 1.3.4; emacs 27.0.50

Richard Henderson <address@hidden> writes:

> Tidy the computation of the value; no functional change.
>
> Signed-off-by: Richard Henderson <address@hidden>

Reviewed-by: Alex Bennée <address@hidden>

> ---
>  target/alpha/helper.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/target/alpha/helper.c b/target/alpha/helper.c
> index 2f959c65ef..1b3479738b 100644
> --- a/target/alpha/helper.c
> +++ b/target/alpha/helper.c
> @@ -69,14 +69,13 @@ void cpu_alpha_store_fpcr(CPUAlphaState *env, uint64_t 
> val)
>      env->fpcr_exc_enable = ~t & FPCR_STATUS_MASK;
>
>      env->fpcr_dyn_round = rm_map[(fpcr & FPCR_DYN_MASK) >> FPCR_DYN_SHIFT];
> -
> -    env->fpcr_flush_to_zero = (fpcr & FPCR_UNFD) && (fpcr & FPCR_UNDZ);
>      env->fp_status.flush_inputs_to_zero = (fpcr & FPCR_DNZ) != 0;
> +
> +    t = (fpcr & FPCR_UNFD) && (fpcr & FPCR_UNDZ);
>  #ifdef CONFIG_USER_ONLY
> -    if (env->swcr & SWCR_MAP_UMZ) {
> -        env->fpcr_flush_to_zero = 1;
> -    }
> +    t |= (env->swcr & SWCR_MAP_UMZ) != 0;
>  #endif
> +    env->fpcr_flush_to_zero = t;
>  }
>
>  uint64_t helper_load_fpcr(CPUAlphaState *env)


--
Alex Bennée



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