[Bug tree-optimization/82129] [8 Regression] ICE in compute_antic, at tree-ssa-pre.c:2447

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82129

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
So we oscillate in the expression set because we "randomly" take expressions
when intersecting ANTIC_OUT.  Both keeping all and canonicalizing to lowest
expression ID fixes this.

Testing patch.