GCC Middle and Back End API Reference
tree-scalar-evolution.h
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1/* Scalar evolution detector.
2 Copyright (C) 2003-2024 Free Software Foundation, Inc.
3 Contributed by Sebastian Pop <s.pop@laposte.net>
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 3, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING3. If not see
19<http://www.gnu.org/licenses/>. */
20
21#ifndef GCC_TREE_SCALAR_EVOLUTION_H
22#define GCC_TREE_SCALAR_EVOLUTION_H
23
24extern tree number_of_latch_executions (class loop *);
25extern gcond *get_loop_exit_condition (const class loop *);
27
28extern void scev_initialize (void);
29extern bool scev_initialized_p (void);
30extern void scev_reset (void);
31extern void scev_reset_htab (void);
32extern void scev_finalize (void);
33extern tree analyze_scalar_evolution (class loop *, tree);
34extern tree instantiate_scev (edge, class loop *, tree);
35extern tree resolve_mixers (class loop *, tree, bool *);
36extern void gather_stats_on_scev_database (void);
37extern bool final_value_replacement_loop (class loop *);
38extern unsigned int scev_const_prop (void);
39extern bool expression_expensive_p (tree, bool *);
40extern bool simple_iv_with_niters (class loop *, class loop *, tree,
41 struct affine_iv *, tree *, bool);
42extern bool simple_iv (class loop *, class loop *, tree, struct affine_iv *,
43 bool);
44extern bool iv_can_overflow_p (class loop *, tree, tree, tree);
46extern void record_nonwrapping_chrec (tree);
47extern bool nonwrapping_chrec_p (tree);
48
49/* Returns the basic block preceding LOOP, or the CFG entry block when
50 the loop is function's body. */
51
52inline basic_block
58
59/* Analyze all the parameters of the chrec that were left under a
60 symbolic form. LOOP is the loop in which symbolic names have to
61 be analyzed and instantiated. */
62
63inline tree
65{
67}
68
69/* Returns the loop of the polynomial chrec CHREC. */
70
71inline class loop *
73{
74 return get_loop (cfun, CHREC_VARIABLE (chrec));
75}
76
77#endif /* GCC_TREE_SCALAR_EVOLUTION_H */
#define ENTRY_BLOCK_PTR_FOR_FN(FN)
Definition basic-block.h:194
edge loop_preheader_edge(const class loop *loop)
Definition cfgloop.cc:1760
class loop * get_loop(struct function *fn, unsigned num)
Definition cfgloop.h:530
class loop * loop_p
Definition cfgloop.h:98
Definition cfgloop.h:120
class edge_def * edge
Definition coretypes.h:342
const class edge_def * const_edge
Definition coretypes.h:343
const union tree_node * const_tree
Definition coretypes.h:98
union tree_node * tree
Definition coretypes.h:97
#define cfun
Definition function.h:475
T * ggc_alloc(ALONE_CXX_MEM_STAT_INFO)
Definition ggc.h:184
Definition tree-ssa-loop.h:27
Definition basic-block.h:117
Definition gimple.h:857
bool final_value_replacement_loop(class loop *)
Definition tree-scalar-evolution.cc:3754
class loop * get_chrec_loop(const_tree chrec)
Definition tree-scalar-evolution.h:72
basic_block block_before_loop(loop_p loop)
Definition tree-scalar-evolution.h:53
void scev_reset_htab(void)
Definition tree-scalar-evolution.cc:3026
tree instantiate_parameters(class loop *loop, tree chrec)
Definition tree-scalar-evolution.h:64
tree instantiate_scev(edge, class loop *, tree)
Definition tree-scalar-evolution.cc:2719
void scev_finalize(void)
Definition tree-scalar-evolution.cc:3370
void scev_initialize(void)
Definition tree-scalar-evolution.cc:3003
tree analyze_scalar_evolution(class loop *, tree)
Definition tree-scalar-evolution.cc:2011
bool scev_initialized_p(void)
Definition tree-scalar-evolution.cc:3017
tree compute_overall_effect_of_inner_loop(class loop *, tree)
Definition tree-scalar-evolution.cc:447
bool expression_expensive_p(tree, bool *)
Definition tree-scalar-evolution.cc:3526
void scev_reset(void)
Definition tree-scalar-evolution.cc:3038
gcond * get_loop_exit_condition(const class loop *)
Definition tree-scalar-evolution.cc:1294
bool simple_iv_with_niters(class loop *, class loop *, tree, struct affine_iv *, tree *, bool)
Definition tree-scalar-evolution.cc:3219
void gather_stats_on_scev_database(void)
Definition tree-scalar-evolution.cc:2981
bool nonwrapping_chrec_p(tree)
Definition tree-scalar-evolution.cc:2069
tree number_of_latch_executions(class loop *)
Definition tree-scalar-evolution.cc:2817
tree resolve_mixers(class loop *, tree, bool *)
Definition tree-scalar-evolution.cc:2768
void record_nonwrapping_chrec(tree)
Definition tree-scalar-evolution.cc:2055
unsigned int scev_const_prop(void)
bool simple_iv(class loop *, class loop *, tree, struct affine_iv *, bool)
Definition tree-scalar-evolution.cc:3360
bool iv_can_overflow_p(class loop *, tree, tree, tree)
Definition tree-scalar-evolution.cc:3055
#define CHREC_VARIABLE(NODE)
Definition tree.h:1447