[Bug rtl-optimization/61047] [4.9/5/6 Regression] wrong code at -O1 on x86_64-linux

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61047

--- Comment #24 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> I agree that this is too risky to backport, but I disagree with the decision
> not to fix it on the trunk.  We have plenty of time to watch for performance
> regressions and/or bugs it introduces there, and even if this bug is only
> hit by machine generated code, it would be helpful to all the people that
> try to report bugs against gcc if they wouldn't have to analyze and then
> ignore similar cases every few days because we chose to never fix it on the
> gcc side.

As far as I know "all the people" is just one guy submitting machine-generated
testcases and repeatedly running into the issue.  I suspended the PR because
nobody else reported it, in particular on real-life software.  IMO there are
far more pressing issues to be addressed than this one.

That being said, if you feel strongly about it, then go ahead, I won't oppose.