1 /* Loop manipulation header.
2 Copyright (C) 2014-2023 Free Software Foundation, Inc.
4 This file is part of GCC.
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
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
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/>. */
20 #ifndef GCC_CFGLOOPMANIP_H
21 #define GCC_CFGLOOPMANIP_H
25 CP_SIMPLE_PREHEADERS
= 1,
26 CP_FALLTHRU_PREHEADERS
= 2
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
;
37 extern bool remove_path (edge
, bool * = NULL
, bitmap
= NULL
);
38 extern void place_new_loop (struct function
*, class loop
*);
39 extern void add_loop (class loop
*, class loop
*);
40 extern void scale_loop_frequencies (class loop
*, profile_probability
);
41 extern void scale_loop_profile (class loop
*, profile_probability
, gcov_type
);
42 extern edge
create_empty_if_region_on_edge (edge
, tree
);
43 extern class loop
*create_empty_loop_on_edge (edge
, tree
, tree
, tree
, tree
,
44 tree
*, tree
*, class loop
*);
45 extern void unloop (class loop
*, bool *, bitmap
);
46 extern void unloop_loops (vec
<class loop
*> &loops_to_unloop
,
47 vec
<int> &loops_to_unloop_nunroll
,
48 bitmap loop_closed_ssa_invalidated
,
49 bool *irred_invalidated
);
50 extern void copy_loop_info (class loop
*loop
, class loop
*target
);
51 extern class loop
* duplicate_loop (class loop
*, class loop
*,
53 extern void duplicate_subloops (class loop
*, class loop
*);
54 extern bool can_duplicate_loop_p (const class loop
*loop
);
56 duplicate_loop_body_to_header_edge (class loop
*, edge
, unsigned, sbitmap
, edge
,
58 extern bool mfb_keep_just (edge
);
59 basic_block
create_preheader (class loop
*, int);
60 extern void create_preheaders (int);
61 extern void force_single_succ_latches (void);
62 class loop
* loop_version (class loop
*, void *,
64 profile_probability
, profile_probability
,
65 profile_probability
, profile_probability
, bool);
66 void adjust_loop_info_after_peeling (class loop
*loop
, int npeel
, bool precise
);
68 #endif /* GCC_CFGLOOPMANIP_H */