1 /* Header file for loop interation estimates. 2 Copyright (C) 2013-2022 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #ifndef GCC_TREE_SSA_LOOP_NITER_H 21 #define GCC_TREE_SSA_LOOP_NITER_H 22 23 extern tree expand_simple_operations (tree, tree = NULL); 24 extern tree simplify_using_initial_conditions (class loop *, tree); 25 extern bool loop_only_exit_p (const class loop *, basic_block *body, 26 const_edge); 27 extern bool number_of_iterations_exit (class loop *, edge, 28 class tree_niter_desc *niter, bool, 29 bool every_iteration = true, 30 basic_block * = NULL); 31 extern bool number_of_iterations_exit_assumptions (class loop *, edge, 32 class tree_niter_desc *, 33 gcond **, bool = true, 34 basic_block * = NULL); 35 extern tree find_loop_niter (class loop *, edge *); 36 extern bool finite_loop_p (class loop *); 37 extern tree loop_niter_by_eval (class loop *, edge); 38 extern tree find_loop_niter_by_eval (class loop *, edge *); 39 extern bool estimated_loop_iterations (class loop *, widest_int *); 40 extern HOST_WIDE_INT estimated_loop_iterations_int (class loop *); 41 extern bool max_loop_iterations (class loop *, widest_int *); 42 extern HOST_WIDE_INT max_loop_iterations_int (class loop *); 43 extern bool likely_max_loop_iterations (class loop *, widest_int *); 44 extern HOST_WIDE_INT likely_max_loop_iterations_int (class loop *); 45 extern HOST_WIDE_INT max_stmt_executions_int (class loop *); 46 extern HOST_WIDE_INT likely_max_stmt_executions_int (class loop *); 47 extern HOST_WIDE_INT estimated_stmt_executions_int (class loop *); 48 extern bool max_stmt_executions (class loop *, widest_int *); 49 extern bool likely_max_stmt_executions (class loop *, widest_int *); 50 extern bool estimated_stmt_executions (class loop *, widest_int *); 51 extern void estimate_numbers_of_iterations (function *); 52 extern void estimate_numbers_of_iterations (class loop *); 53 extern bool stmt_dominates_stmt_p (gimple *, gimple *); 54 extern bool nowrap_type_p (tree); 55 extern bool scev_probably_wraps_p (tree, tree, tree, gimple *, 56 class loop *, bool); 57 extern void free_numbers_of_iterations_estimates (class loop *); 58 extern void free_numbers_of_iterations_estimates (function *); 59 extern tree simplify_replace_tree (tree, tree, 60 tree, tree (*)(tree, void *) = NULL, 61 void * = NULL, bool do_fold = true); 62 extern void substitute_in_loop_info (class loop *, tree, tree); 63 64 #endif /* GCC_TREE_SSA_LOOP_NITER_H */ 65