[Bug rtl-optimization/123517] [16 regression]

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

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

--- Comment #1 from Sam James <sjames at gcc dot gnu.org> ---
This is enough to hang it:
```
$ /var/tmp/portage/sys-devel/gcc-16.0.9999/work/build/./gcc/xgcc
-B/var/tmp/portage/sys-devel/gcc-16.0.9999/work/build/./gcc/ ./_gcov_execl.i -c
-m32 -O3 -march=x86-64-v2
```

Reducing..