[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 #3 from Marek Polacek <mpolacek at gcc dot gnu.org> 2013-04-04 15:49:00 UTC ---
Author: mpolacek
Date: Thu Apr  4 15:48:25 2013
New Revision: 197487

URL: http://gcc.gnu.org/viewcvs?rev=197487&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:
    trunk/gcc/testsuite/gcc.dg/pr48186.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/predict.c
    trunk/gcc/testsuite/ChangeLog