[Bug middle-end/104986] [12 Regression] bogus writing 1 byte into a region of size 0 with -fwrapv and -O2 -fpeel-loops since r12-4698-gf6d012338bf87f42

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104986

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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           Keywords|                            |missed-optimization

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
This is peeling leaving us with unreachable code we warn on and somehow
while figuring prephitmp_30 + -6 is -1 we don't figure nb_58 is zero on
the path to bb9.

I think I've seen this backward-forward dependency issue with ranger before
in another missed optimization PR.