[Bug debug/47501] New: [4.6 Regression] -fcompare-debug failure with -Os -fmodulo-sched

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47501

           Summary: [4.6 Regression] -fcompare-debug failure with -Os
                    -fmodulo-sched
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: debug
        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 23146
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23146
reduced testcase

Compiler output:
$ gcc -Os -fmodulo-sched -fcompare-debug testcase.c
gcc: error: testcase.c: -fcompare-debug failure (length)

$ diff testcase.*gkd
25a26
> (note# 0 0 NOTE_INSN_DELETED)

Tested revisions:
r169326 - fail
r169287 - fail
r169257 - OK