[Bug rtl-optimization/57106] New: [4.8/4.9 Regression] -fcompare-debug failure with -O2 -fschedule-insns -funroll-all-loops

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57106



             Bug #: 57106

           Summary: [4.8/4.9 Regression] -fcompare-debug failure with -O2

                    -fschedule-insns -funroll-all-loops

    Classification: Unclassified

           Product: gcc

           Version: 4.9.0

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: rtl-optimization

        AssignedTo: unassig...@gcc.gnu.org

        ReportedBy: zso...@seznam.cz





Created attachment 29967

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29967

reduced testcase



Compiler output:

$ gcc -O2 -fschedule-insns -funroll-all-loops -fcompare-debug testcase.c

gcc: error: testcase.c: -fcompare-debug failure



Tested revisions:

r198366 - fail

4.8 r198018 - fail

4.7 r198018 - OK