[Bug tree-optimization/48186] ICE: SIGFPE (division by zero) in maybe_hot_frequency_p at predict.c:129 with --param hot-bb-frequency-fraction=0 on basic code

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48186



--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> 2013-04-04 
15:53:25 UTC ---

Author: mpolacek

Date: Thu Apr  4 15:52:54 2013

New Revision: 197488



URL: http://gcc.gnu.org/viewcvs?rev=197488&root=gcc&view=rev

Log:

        PR tree-optimization/48186

        * predict.c (maybe_hot_frequency_p): Return false if

        HOT_BB_FREQUENCY_FRACTION is 0.

        (cgraph_maybe_hot_edge_p): Likewise.



        * gcc.dg/pr48186.c: New test.



Added:

    branches/gcc-4_8-branch/gcc/testsuite/gcc.dg/pr48186.c

Modified:

    branches/gcc-4_8-branch/gcc/ChangeLog

    branches/gcc-4_8-branch/gcc/predict.c

    branches/gcc-4_8-branch/gcc/testsuite/ChangeLog