[Bug tree-optimization/92558] [10 Regression] Miscompare of 554.roms_r with -Ofast -march=znver2 -flto since r278289
marxin at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Mon Nov 18 10:11:00 GMT 2019
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92558
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #2)
> Will look.
Thanks, there's a code snippet which is different before and after the
revision. Hopefully, it can be used for a reproducer creation:
$ cat set.f90
USE mod_scalars
real(r16) wsum, cff
DO i=1,nfast0
wsum=wsum+weight(1,i,ng)
cff=cff+weight(2,i,ng)
END DO
DO i=1,nfast0
weight=wsum*cff
END DO
END
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