[Bug rtl-optimization/82982] [8 Regression] ICE: qsort checking failed (error: qsort comparator non-negative on sorted output: 5) in ready_sort_real in haifa scheduler

[willschm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82982

--- Comment #8 from Will Schmidt <willschm at gcc dot gnu.org> ---
(In reply to Will Schmidt from comment #6)
> (In reply to Arseny Solokha from comment #5)
> > (In reply to Will Schmidt from comment #4)
> > > Tried to re-create locally, I've gotten two ICE's using the provided
> > > testcode snippet, neither look quite like the originally reported issue. 
> > 
> > You are right. I also cannot reproduce the original issue anymore w/ r257975.
> 
> Today I cannot get any ICE's out of this test.  Wonder if things were fixed
> up in the mean-time, or if I tickled a config option and managed to hide the
> issue(s).   Going to try a few more runs with older trees to see if I can
> verify things are fixed.

(In reply to Arseny Solokha from comment #7)
> OK, the original issue still reproduces for the powerpc-e500v2-linux-gnuspe
> target as of r257975, so the change that affected this issue must have been
> local to the rs6000 backend.

Ok.  so at the moment I'm going to claim that I am unable to recreate the
initially reported problem in my environments, which are 64-bit or 64/32 mixed.
 Nothing pure 32-bit here, nothing e300* or e500*, etc.

The ICe's that I did see (comment #4) seem to be to be a separate issue.  Those
only occur in my sandbox/debug build of gcc, which has
CFLAGS,CXXFLAGS,CFLAGS_FOR_BUILD, CFLAGS_FOR_TARGET, etc all  set to "-O0 -g3
-fno-inline".  I otherwise don't see any ICE with this test case.