[Bug rtl-optimization/46875] New: [4.6 Regression] ICE: verify_flow_info failed: too many outgoing branch edges from bb 3 with -Os -fselective-scheduling2

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46875

           Summary: [4.6 Regression] ICE: verify_flow_info failed: too
                    many outgoing branch edges from bb 3 with -Os
                    -fselective-scheduling2
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: zso...@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 22696
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22696
reduced testcase (from gcc.c-torture/execute/20011219-1.c)

Compiler output:
$ gcc -Os -fselective-scheduling2 pr46875.c 
pr46875.c: In function 'foo':
pr46875.c:24:1: error: too many outgoing branch edges from bb 3
pr46875.c:24:1: internal compiler error: verify_flow_info failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r167621 - crash
r167556 - crash
r165699 - OK