[Bug tree-optimization/45178] New: CDDCE doesn't eliminate conditional code in infinite loop

[rguenth at gcc dot gnu dot org]

Reduced from gcc.dg/tree-ssa/ssa-dce-3.c:

int main(void)
{
  unsigned j = 0;
  while (1)
    {
      j += 500;
      if (j % 7)
        j++;
      else
        j--;
    }
  return 0;
}


-- 
           Summary: CDDCE doesn't eliminate conditional code in infinite
                    loop
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rguenth at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45178