[Bug lto/83201] [7/8 Regression] SPEC CPU2017 505.mcf_f produces incorrect output when built with -flto and FDO
rguenth at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Wed Nov 29 08:32:00 GMT 2017
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83201
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Target Milestone|--- |7.3
Summary|SPEC CPU2017 505.mcf_f |[7/8 Regression] SPEC
|produces incorrect output |CPU2017 505.mcf_f produces
|when built with -flto and |incorrect output when built
|FDO |with -flto and FDO
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Pat Haugen from comment #2)
> (In reply to Pat Haugen from comment #0)
> >
> > It appears to work fine with r254943. I'll start a bisect and post results.
>
> My bisect showed that r254946 was where it started failing on trunk. And
> yes, it fails with current GCC 7 branch too.
Probably a bogus bisect point, for a few revisions inlining was broken so it's
probably broken a bit earlier as well.
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