Enabling -frename-registers?

[Eric Botcazou]

> Index: invoke.texi
> ===================================================================
> --- invoke.texi	(revision 235475)
> +++ invoke.texi	(working copy)
> @@ -8574,7 +8574,7 @@ make debugging impossible, since variabl
>   a ``home register''.
> 
>   Enabled by default with @option{-funroll-loops} and @option{-fpeel-loops},
> -and also enabled at levels @option{-O2} and @option{-O3}.
> +and also enabled at levels @option{-O2}, @option{-O3} and @option{-Os}.
> 
>   @item -fschedule-fusion
>   @opindex fschedule-fusion

Yes, this looks good to me (unless -frename-registers is specifically disabled 
at -Os in some other way, I didn't look into the details).

-- 
Eric Botcazou