2006-09-05 Andrew Pinski <pinskia@physics.uc.edu>

        PR tree-opt/28937
        * tree-flow.h (tree_ssa_unswitch_loops): Return unsigned int.
        (canonicalize_induction_variables): Likewise.
        (tree_unroll_loops_completely): Likewise.
        (tree_ssa_prefetch_arrays): Likewise.
        (remove_empty_loops): Likewise.
        * tree-ssa-loop-unswitch.c (tree_ssa_unswitch_loops): Return
        TODO_cleanup_cfg instead of directly calling
        cleanup_tree_cfg_loop.
        * tree-ssa-loop-ivcanon.c (canonicalize_induction_variables):
        Likewise.
        (tree_unroll_loops_completely): Likewise.
        (remove_empty_loops): Likewise.
        * tree-ssa-loop-prefetch.c (tree_ssa_prefetch_arrays): Likewise.
        * tree-ssa-loop.c (tree_ssa_loop_unswitch): Use the return value
        of tree_ssa_unswitch_loops.
        (tree_ssa_loop_ivcanon): Use the return value of
        canonicalize_induction_variables.
        (tree_ssa_empty_loop): Use the return value of
        remove_empty_loops.
        (tree_complete_unroll): Use the return value of
        tree_unroll_loops_completely.
        (tree_ssa_loop_prefetch): Use the return value of
        tree_ssa_prefetch_arrays.
        * passes.c (execute_todo): Before Cleanup CFG, set
        updating_used_alone and after cleanup CFG, call
        recalculate_used_alone.
2006-09-05  Andrew Pinski  <pinskia@physics.uc.edu>

        PR tree-opt/28937
        * g++.dg/opt/unroll2.C: New test.




git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@116717 138bc75d-0d04-0410-961f-82ee72b054a4

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