[Bug tree-optimization/48304] New: ICE: SIGFPE (division by zero) in maybe_hot_count_p at predict.c:145 with --param hot-bb-count-fraction=0 -fprofile-use

["zsojka at seznam dot cz" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48304

           Summary: ICE: SIGFPE (division by zero) in maybe_hot_count_p at
                    predict.c:145 with --param hot-bb-count-fraction=0
                    -fprofile-use
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 23783
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23783
reduced testcase

Compiler output:
$ rm *.gcda
$ gcc --param hot-bb-count-fraction=0 testcase.c -fprofile-generate
$ ./a.out
$ gcc --param hot-bb-count-fraction=0 testcase.c -fprofile-use
Program received signal SIGFPE, Arithmetic exception.
0x00000000007fdece in maybe_hot_count_p (e=0x7ffff599b1c0) at
/mnt/svn/gcc-trunk/gcc/predict.c:145
145               > profile_info->sum_max / PARAM_VALUE
(HOT_BB_COUNT_FRACTION));