[Bug tree-optimization/104269] [12 Regression] Bogus -Wuse-after-free seen in xen

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104269

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
The easiest would be to run _before_ uncprop.  uncprop is really part of
out-of-SSA to reduce the number of copies on edges (maybe it should be merged
into it instead of being visible as separate pass).