[Bug tree-optimization/46639] New: [4.6 Regression] Missing optimization

[d.g.gorbachev at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46639

           Summary: [4.6 Regression] Missing optimization
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: d.g.gorbac...@gmail.com
              Host: i686-pc-linux-gnu
            Target: i686-pc-linux-gnu
             Build: i686-pc-linux-gnu


Created attachment 22507
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22507
testcase

gcc -O2 pr46639.c

/tmp/ccJzJXqb.o: In function `bar.part.0':
pr46639.c:(.text+0x30): undefined reference to `link_error'