[Bug tree-optimization/111459] DSE after deleting trivial dead statements sometimes should do a cfgcleanup

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111459

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So on the trunk

we have:

Removing dead stmt:_39 = PHI <_12(5)>

In ccp4 but we don't delete _12 as dead.

Then dse deletes it:
  Deleted trivially dead stmt: _12 = (int) _6;

Let me look into that and see if there is a reason why _12 is not deleted
during ccp4.