[Bug tree-optimization/47216] New: [4.6 Regression] gcc.dg/torture/pr43360.c FAILs with -O -fPIC -fgcse -fgcse-sm -fnon-call-exceptions -fno-tree-dse

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47216

           Summary: [4.6 Regression] gcc.dg/torture/pr43360.c FAILs with
                    -O -fPIC -fgcse -fgcse-sm -fnon-call-exceptions
                    -fno-tree-dse
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: zso...@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 22927
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22927
preprocessed source

Output:
$ gcc -O -fPIC -fgcse -fgcse-sm -fnon-call-exceptions -fno-tree-dse pr43360.i
$ valgrind -q ./a.out 
Aborted

I wasn't able to further reduce the testcase.

Tested revisions:
r168552 - fail
r161659 - fail
r158095 - OK
4.5 r168062 - OK