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


From: Philippe Mathieu-Daudé
Subject: Re: [PATCH 5/7] target/alpha: Write to fpcr_flush_to_zero once
Date: Sat, 21 Sep 2019 10:54:45 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0

On 9/21/19 6:32 AM, Richard Henderson wrote:
> Tidy the computation of the value; no functional change.
> 
> Signed-off-by: Richard Henderson <address@hidden>

Reviewed-by: Philippe Mathieu-Daudé <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)
> 




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