Enabling -frename-registers?

[Eric Botcazou]

> @@ -8562,7 +8563,8 @@ debug information format adopted by the
>   make debugging impossible, since variables no longer stay in
>   a ``home register''.
> 
> -Enabled by default with @option{-funroll-loops} and @option{-fpeel-loops}.
> +Enabled by default with @option{-funroll-loops} and @option{-fpeel-loops},
> +and also enabled at levels @option{-O2} and @option{-O3}.

OPT_LEVELS_2_PLUS includes -Os since it's basically -O2.

-- 
Eric Botcazou