[Bug tree-optimization/123152] [16 regression] ICE when building Valgrind (dominator of 15 should be 42, not 44) since r16-6133-gca8d97f8cb8

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123152

--- Comment #6 from Sam James <sjames at gcc dot gnu.org> ---
(In reply to David Binderman from comment #4)
> (In reply to Tamar Christina from comment #2)
> > can reproduce on AArch64 with just -O3
> 
> I see this on x86_64 with -O3 -march=znver3:

That's what my original basically was. I hit many other such cases but not
worrying about reporting those yet as they're surely dupes (or many are).