[Bug rtl-optimization/50205] New: [4.6/4.7 Regression] ICE: in code_motion_path_driver, at sel-sched.c:6581 with -fselective-scheduling2 and custom flags

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50205

             Bug #: 50205
           Summary: [4.6/4.7 Regression] ICE: in code_motion_path_driver,
                    at sel-sched.c:6581 with -fselective-scheduling2 and
                    custom flags
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 25115
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25115
reduced testcase

Compiler output:
$ gcc -O2 -fno-cprop-registers -fno-dce -fno-forward-propagate
-fselective-scheduling2 -funroll-loops -fno-web testcase.c         
testcase.c: In function 'foo':
testcase.c:11:1: internal compiler error: in code_motion_path_driver, at
sel-sched.c:6581
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r178096 - crash
4.6 r177922 - crash
4.5 r177922 - OK