ssa-loop-manip.c: Include langhooks.h.

2009-07-30  Razya Ladelsky <razya@il.ibm.com>

        * ssa-loop-manip.c: Include langhooks.h.
        (rewrite_phi_with_iv): New.
        (rewrite_all_phi_nodes_with_iv): New.
        (canonicalize_loop_ivs): Move here from tree-parloops.c.
        Remove reduction_list argument. Use rewrite_all_phi_nodes_with_iv.
        * tree-parloops.c (loop_parallel_p): Move out all conditions
        except dependency check.
        (canonicalize_loop_ivs): Move to tree-ssa-loop-manip.c.
        (gen_parallel_loop): Call canonicalize_loop_ivs without
        reduction_list argument.
        (build_new_reduction): New.
        (gather_scalar_reductions): New.
        (try_get_loop_niter): New.
        (try_create_reduction_list): New.
        (parallleize_loops): Change the parallel conditions check.
        * tree-flow.h (canonicalize_loop_ivs): Remove one argument.
        * Makefile.in (tree-ssa-loop-manip.o): Add langhooks.h dependency.

From-SVN: r150250