[Bug rtl-optimization/54792] New: [4.8 Regression] -fcompare-debug failures introduced by r191493

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54792



             Bug #: 54792

           Summary: [4.8 Regression] -fcompare-debug failures introduced

                    by r191493

    Classification: Unclassified

           Product: gcc

           Version: 4.8.0

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: rtl-optimization

        AssignedTo: ja...@gcc.gnu.org

        ReportedBy: ja...@gcc.gnu.org

                CC: ber...@gcc.gnu.org

            Target: i686-linux





Created attachment 28338

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28338

tree-inline.ii.bz2



While bootstrapping a newer PR54519 fix, I've encountered a bootstrap

comparison failure on i686-linux, which can be reproduced by stock trunk on the

patched tree-inline.ii with:

./g++ -B ./ -S -O2 -m32 -fcompare-debug tree-inline.ii

g++: error: tree-inline.ii: -fcompare-debug failure (length)



I've bisected it to the

http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=191493

changes.