[Bug tree-optimization/47415] New: -fcompare-debug failure with -O -fpredictive-commoning -fno-tree-fre

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47415

           Summary: -fcompare-debug failure with -O -fpredictive-commoning
                    -fno-tree-fre
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: zso...@seznam.cz
                CC: aol...@gcc.gnu.org
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 23078
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23078
reduced testcase

Compiler output:
$ gcc -O -fpredictive-commoning -fno-tree-fre -fcompare-debug testcase.c        
gcc: error: testcase.c: -fcompare-debug failure

Tested revisions:
r169125 - fail
4.5 r168785 - fail