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[Bug tree-optimization/59519] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in slpeel_update_phi_nodes_for_guard1, at tree-vect-loop-manip.c:486
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 02 Jan 2014 15:52:05 +0000
- Subject: [Bug tree-optimization/59519] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in slpeel_update_phi_nodes_for_guard1, at tree-vect-loop-manip.c:486
- Auto-submitted: auto-generated
- References: <bug-59519-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59519
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 31562
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31562&action=edit
gcc49-pr59519.patch
I wonder if this isn't just a checking issue, the two PHI nodes created in
*new_exit_bb have the same argument, so I think it is just fine if the two PHI
results are used interchangeably, later optimization passes should hopefully
coalesce them into a single IV.