https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65028
--- Comment #11 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Martin Jambor from comment #10) > (In reply to H.J. Lu from comment #9) > > The same bug affects 252.eon in SPEC CPU 2000 on x32: > > ... > > > > > The fix isn't sufficient since adding -fno-ipa-cp fixes eon on x32. > > I really doubt that it is "the same bug." Just that -fno-ipa-cp > avoids it certainly does not suffice to make that conclusion. The symptom is very similar, that is eon died very early. > Anyway, I will try to find some time to look soon, although setting up > x32 environment will take me some time. I suppose this bug also > manifests itself with -O3 and LTO? It ONLY shows up with -O3 -funroll-loops -ffast-math -flto