1/* Loop optimizer initialization routines and RTL loop optimization passes.
2 Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 2, or (at your option) any later

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38 loops. */
39
40struct loops *
41loop_optimizer_init (unsigned flags)
42{
43 struct loops *loops = XCNEW (struct loops);
44 edge e;
45 edge_iterator ei;
46
47 /* Avoid annoying special cases of edges going to exit
48 block. */
49
50 for (ei = ei_start (EXIT_BLOCK_PTR->preds); (e = ei_safe_edge (ei)); )
51 if ((e->flags & EDGE_FALLTHRU) && !single_succ_p (e->src))
52 split_edge (e);
53 else
54 ei_next (&ei);

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