On 09/20/2011 01:46 AM, Bingfeng Mei wrote:
>    if (MEM_P (rtlx) && MEM_P (rtly)
>        && MEM_ADDR_SPACE (rtlx) != MEM_ADDR_SPACE (rtly))
> -    return 0;
> +    {
> +      if (!targetm.addr_space.subset_p (MEM_ADDR_SPACE (rtlx),
> +                                        MEM_ADDR_SPACE (rtly))
> +         && !targetm.addr_space.subset_p (MEM_ADDR_SPACE (rtly),
> +                                          MEM_ADDR_SPACE (rtlx)))
> +        return 1;
> +      else
> +        return 0;
> +    }

You have 4 copies of this.  Please pull it out into
a new predicate function.


r~

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