[Bug tree-optimization/48189] [4.7 Regression] ICE: SIGFPE (division by zero) in in predict_loops () at predict.c:991 with --param max-predicted-iterations=0

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48189



--- Comment #14 from Marek Polacek <mpolacek at gcc dot gnu.org> 2013-04-19 
08:20:11 UTC ---

Author: mpolacek

Date: Fri Apr 19 08:18:29 2013

New Revision: 198085



URL: http://gcc.gnu.org/viewcvs?rev=198085&root=gcc&view=rev

Log:

    Backport from mainline

    2013-01-08  Steven Bosscher  <ste...@gcc.gnu.org>

            Jakub Jelinek  <ja...@redhat.com>



    PR tree-optimization/48189

    * predict.c (predict_loops): If max is 0, don't call compare_tree_int.

    If nitercst is 0, don't predict the exit edge.



    * gcc.dg/pr48189.c: New test.





Added:

    branches/gcc-4_7-branch/gcc/testsuite/gcc.dg/pr48189.c

Modified:

    branches/gcc-4_7-branch/gcc/ChangeLog

    branches/gcc-4_7-branch/gcc/predict.c

    branches/gcc-4_7-branch/gcc/testsuite/ChangeLog