[Bug rtl-optimization/68910] [5/6 regression] huge stack frame and poor code with instruction scheduling at -O2

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68910

--- Comment #10 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> In case I revert (e.g. double revert) to enable the LRA for SPARC
> 
> commit a28f6dc56909fc35dd83d4364bc68c69e2450a51
> Author: davem <davem@138bc75d-0d04-0410-961f-82ee72b054a4>
> Date:   Tue Sep 22 03:52:45 2015 +0000
> 
>     Revert LRA SPARC changes for now.
>     
>     gcc/
>     
>         PR/67622
>         Revert:
>         2015-09-11  David S. Miller  <davem@davemloft.net>
> 
> then the clr instructions are gone.

Interesting, but we cannot do it on the 5 branch and there are apparently still
issues even on the mainline.  In any case, I have a trivial fix for the code
generation issue and a safe change for the stack frame so I'll go for them.