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[Bug tree-optimization/82129] [8 Regression] ICE in compute_antic, at tree-ssa-pre.c:2447
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 20 Oct 2017 13:42:24 +0000
- Subject: [Bug tree-optimization/82129] [8 Regression] ICE in compute_antic, at tree-ssa-pre.c:2447
- Auto-submitted: auto-generated
- References: <bug-82129-4@http.gcc.gnu.org/bugzilla/>
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.