[Bug rtl-optimization/55193] [4.8 Regression] ICE in in simplify_const_unary_operation, at simplify-rtx.c:1659

[jakub at gcc dot gnu.org]

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.