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[Bug rtl-optimization/55193] [4.8 Regression] ICE in in simplify_const_unary_operation, at simplify-rtx.c:1659
- 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: Mon, 10 Dec 2012 17:44:57 +0000
- Subject: [Bug rtl-optimization/55193] [4.8 Regression] ICE in in simplify_const_unary_operation, at simplify-rtx.c:1659
- Auto-submitted: auto-generated
- References: <bug-55193-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55193
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-12-10 17:44:57 UTC ---
Can't be reproduced starting with
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193157
(made latent on this testcase), but if I revert the patch I can reproduce it
easily.
The bug is in lra-constraints.c, loc_equivalence_change_p really doesn't work
well on DEBUG_INSNs.