[Bug tree-optimization/56826] New: Run-fail after r197189.

[ysrumyan at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56826

             Bug #: 56826
           Summary: Run-fail after r197189.
    Classification: Unclassified
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ysrumyan@gmail.com


We got RTF for 435.gromacs from spec2006 suite. I attached simple reproducer
which if failed if it is compiled with -O3 -funroll-loops options but passed at
-O2:

gcc -O3 -funroll-loops -ffast-math -march=corei7 t.c t_main.c -o tt2
./tt2
Test failed
gcc -O2 -ffast-math -march=corei7 t.c t_main.c -o tt1  
./tt1
Test passed