[Bug tree-optimization/65637] New: expand_omp_for_static_chunk ssa-code is untested

["vries at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65637

            Bug ID: 65637
           Summary: expand_omp_for_static_chunk ssa-code is untested
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vries at gcc dot gnu.org

This is the more generic version of
https://gcc.gnu.org/ml/gcc-patches/2014-11/msg01149.html .

Currently, ssa-handling code in expand_omp_for_static_chunk is dead and not
exercised by testing.

Ssa-handling code in omp-low.c is only triggered by pass_parallelize_loops, and
that pass doesn't specify a chunk size on the GIMPLE_OMP_FOR it constructs, so
that will only call expand_omp_for_static_nochunk.