[Bug ipa/123517] [16 regression] infinite loop in ext-dce (due to miscompiling of ext-dce with -O3 -march=native) while compiling _gcov_execl.i since r16-6652

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123517

--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Martin Jambor from comment #9)
> Is the code in comment #3 really a reproducer though?  That does not like
> anything IPA-CP would attempt to optimize.

It is the secondary reproducer. Meaning gcc is miscompiled and that code
reproduces the infinite loop from the miscompiled gcc.