[Bug tree-optimization/71595] [7 Regression] ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in check_loop_closed_ssa_use, at tree-ssa-loop-manip.c:704

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71595

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |msebor at gcc dot gnu.org
      Known to fail|                            |7.0

--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
The ICE was introduced in r236874:

r236874 | hubicka | 2016-05-30 06:40:33 -0400 (Mon, 30 May 2016) | 10 lines

        * predict.h (force_edge_cold): Declare.
        * predict.c (force_edge_cold): New function.
        * tree-ssa-loop-ivcanon.c (try_unroll_loop_completely): Fix profile
        updating.
        (canonicalize_loop_induction_variables): Fix formating.

        * gcc.dg/tree-ssa/cunroll-12.c: New testcase.
        * gcc.dg/tree-ssa/cunroll-13.c: New testcase.
        * gcc.dg/tree-ssa/cunroll-14.c: New testcase.