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[Bug tree-optimization/57685] [4.8/4.9 Regression] GCC stuck in an infinite loop
- 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: Wed, 28 Aug 2013 13:09:49 +0000
- Subject: [Bug tree-optimization/57685] [4.8/4.9 Regression] GCC stuck in an infinite loop
- Auto-submitted: auto-generated
- References: <bug-57685-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57685
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hmm, it's register_edge_assert_for_1 not limiting its recursion and not
avoiding duplicate visits. Which in this case leads to exponential
compile-time behavior.
We can mitigate the latter by only considering single-use defs.