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[Bug rtl-optimization/68910] [5/6 regression] huge stack frame and poor code with instruction scheduling at -O2
- From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 18 Dec 2015 11:27:18 +0000
- Subject: [Bug rtl-optimization/68910] [5/6 regression] huge stack frame and poor code with instruction scheduling at -O2
- Auto-submitted: auto-generated
- References: <bug-68910-4 at http dot gcc dot gnu dot org/bugzilla/>
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.