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[Bug tree-optimization/49911] vrp2 + -fstrict-enums incorrectly remove predicate
- 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: Sun, 31 Jul 2011 09:56:58 +0000
- Subject: [Bug tree-optimization/49911] vrp2 + -fstrict-enums incorrectly remove predicate
- Auto-submitted: auto-generated
- References: <bug-49911-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49911
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-07-31 09:56:41 UTC ---
Smells like the latent issue that we treat all integral types with the same
precision as equal but VRP extracts more fine-grained information. Eric was
opposed to a patch that fixes that. In the past copyrename exposed this
issue for example, but I guess inlining may do the same.
But I can't reproduce this on x86_64-darwin with rev. 176967.