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diff --git a/gcc-4.9/gcc/tree-ssa-loop-niter.h b/gcc-4.9/gcc/tree-ssa-loop-niter.h
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+/* Header file for loop interation estimates.
+ Copyright (C) 2013-2014 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_TREE_SSA_LOOP_NITER_H
+#define GCC_TREE_SSA_LOOP_NITER_H
+
+extern tree expand_simple_operations (tree);
+extern bool loop_only_exit_p (const struct loop *, const_edge);
+extern bool number_of_iterations_exit (struct loop *, edge,
+ struct tree_niter_desc *niter, bool,
+ bool every_iteration = true);
+extern tree find_loop_niter (struct loop *, edge *);
+extern bool finite_loop_p (struct loop *);
+extern tree loop_niter_by_eval (struct loop *, edge);
+extern tree find_loop_niter_by_eval (struct loop *, edge *);
+extern bool estimated_loop_iterations (struct loop *, double_int *);
+extern HOST_WIDE_INT estimated_loop_iterations_int (struct loop *);
+extern bool max_loop_iterations (struct loop *, double_int *);
+extern HOST_WIDE_INT max_loop_iterations_int (struct loop *);
+extern HOST_WIDE_INT max_stmt_executions_int (struct loop *);
+extern HOST_WIDE_INT estimated_stmt_executions_int (struct loop *);
+extern bool max_stmt_executions (struct loop *, double_int *);
+extern bool estimated_stmt_executions (struct loop *, double_int *);
+extern void estimate_numbers_of_iterations (void);
+extern bool stmt_dominates_stmt_p (gimple, gimple);
+extern bool nowrap_type_p (tree);
+extern bool scev_probably_wraps_p (tree, tree, gimple, struct loop *, bool);
+extern void free_numbers_of_iterations_estimates_loop (struct loop *);
+extern void free_numbers_of_iterations_estimates (void);
+extern void substitute_in_loop_info (struct loop *, tree, tree);
+
+#endif /* GCC_TREE_SSA_LOOP_NITER_H */