* lib/target-support.exp (check_effective_target_natural_alignment):
        (check_effective_target_vector_alignment_reachable): New.
        * config/spu/spu.c (spu_vector_alignment_reachable): New.
        (TARGET_VECTOR_ALIGNMENT_REACHABLE): Define.
        * * gcc.dg/vect/pr25413a.c: Use vector_alignment_reachable target
        check.
        * gcc.dg/vect/pr25413.c: Likewise.
        * gcc.dg/vect/pr31699.c: Likewise.

From-SVN: r126872