1 /* Loop manipulation header. 2 Copyright (C) 2014-2016 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_CFGLOOPMANIP_H 21 #define GCC_CFGLOOPMANIP_H 22 23 enum 24 { 25 CP_SIMPLE_PREHEADERS = 1, 26 CP_FALLTHRU_PREHEADERS = 2 27 }; 28 29 #define DLTHE_FLAG_UPDATE_FREQ 1 /* Update frequencies in 30 duplicate_loop_to_header_edge. */ 31 #define DLTHE_RECORD_COPY_NUMBER 2 /* Record copy number in the aux 32 field of newly create BB. */ 33 #define DLTHE_FLAG_COMPLETTE_PEEL 4 /* Update frequencies expecting 34 a complete peeling. */ 35 extern edge mfb_kj_edge; 36 37 extern bool remove_path (edge); 38 extern void place_new_loop (struct function *, struct loop *); 39 extern void add_loop (struct loop *, struct loop *); 40 extern void scale_loop_frequencies (struct loop *, int, int); 41 extern void scale_loop_profile (struct loop *, int, gcov_type); 42 extern edge create_empty_if_region_on_edge (edge, tree); 43 extern struct loop *create_empty_loop_on_edge (edge, tree, tree, tree, tree, 44 tree *, tree *, struct loop *); 45 extern struct loop *loopify (edge, edge, 46 basic_block, edge, edge, bool, 47 unsigned, unsigned); 48 extern void unloop (struct loop *, bool *, bitmap); 49 extern void copy_loop_info (struct loop *loop, struct loop *target); 50 extern struct loop * duplicate_loop (struct loop *, struct loop *); 51 extern void duplicate_subloops (struct loop *, struct loop *); 52 extern bool can_duplicate_loop_p (const struct loop *loop); 53 extern bool duplicate_loop_to_header_edge (struct loop *, edge, 54 unsigned, sbitmap, edge, 55 vec<edge> *, int); 56 extern bool mfb_keep_just (edge); 57 basic_block create_preheader (struct loop *, int); 58 extern void create_preheaders (int); 59 extern void force_single_succ_latches (void); 60 struct loop * loop_version (struct loop *, void *, 61 basic_block *, unsigned, unsigned, unsigned, bool); 62 63 #endif /* GCC_CFGLOOPMANIP_H */ 64