1/* Header file for gimplification.
2 Copyright (C) 2013-2023 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 3, or (at your option) any later
9version.
10
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING3. If not see
18<http://www.gnu.org/licenses/>. */
19
20#ifndef GCC_GIMPLIFY_H
21#define GCC_GIMPLIFY_H
22
23/* Validation of GIMPLE expressions. Note that these predicates only check
24 the basic form of the expression, they don't recurse to make sure that
25 underlying nodes are also of the right form. */
26typedef bool (*gimple_predicate)(tree);
27
28/* FIXME we should deduce this from the predicate. */
29enum fallback {
30 fb_none = 0, /* Do not generate a temporary. */
31
32 fb_rvalue = 1, /* Generate an rvalue to hold the result of a
33 gimplified expression. */
34
35 fb_lvalue = 2, /* Generate an lvalue to hold the result of a
36 gimplified expression. */
37
38 fb_mayfail = 4, /* Gimplification may fail. Error issued
39 afterwards. */
40 fb_either= fb_rvalue | fb_lvalue
41};
42
43typedef int fallback_t;
44
45enum gimplify_status {
46 GS_ERROR = -2, /* Something Bad Seen. */
47 GS_UNHANDLED = -1, /* A langhook result for "I dunno". */
48 GS_OK = 0, /* We did something, maybe more to do. */
49 GS_ALL_DONE = 1 /* The expression is fully gimplified. */
50};
51
52extern void free_gimplify_stack (void);
53extern void push_gimplify_context (bool in_ssa = false,
54 bool rhs_cond_ok = false);
55extern void pop_gimplify_context (gimple *);
56extern gbind *gimple_current_bind_expr (void);
57extern vec<gbind *> gimple_bind_expr_stack (void);
58extern void gimplify_and_add (tree, gimple_seq *);
59extern tree get_formal_tmp_var (tree, gimple_seq *);
60extern tree get_initialized_tmp_var (tree, gimple_seq *, gimple_seq * = NULL,
61 bool = true);
62extern void declare_vars (tree, gimple *, bool);
63extern void gimple_add_tmp_var (tree);
64extern void gimple_add_tmp_var_fn (struct function *, tree);
65extern void copy_if_shared (tree *, void * = NULL);
66extern tree unshare_expr (tree);
67extern tree unshare_expr_without_location (tree);
68extern tree voidify_wrapper_expr (tree, tree);
69extern tree build_and_jump (tree *);
70extern enum gimplify_status gimplify_self_mod_expr (tree *, gimple_seq *,
71 gimple_seq *, bool, tree);
72extern tree gimple_boolify (tree);
73extern gimple_predicate rhs_predicate_for (tree);
74extern bool gimplify_stmt (tree *, gimple_seq *);
75extern void omp_firstprivatize_variable (struct gimplify_omp_ctx *, tree);
76extern enum gimplify_status gimplify_expr (tree *, gimple_seq *, gimple_seq *,
77 bool (*) (tree), fallback_t);
78
79int omp_construct_selector_matches (enum tree_code *, int, int *);
80
81extern void gimplify_type_sizes (tree, gimple_seq *);
82extern void gimplify_one_sizepos (tree *, gimple_seq *);
83extern gbind *gimplify_body (tree, bool);
84extern enum gimplify_status gimplify_arg (tree *, gimple_seq *, location_t,
85 bool = true);
86extern void gimplify_function_tree (tree);
87extern enum gimplify_status gimplify_va_arg_expr (tree *, gimple_seq *,
88 gimple_seq *);
89extern bool generic_expr_could_trap_p (tree expr);
90gimple *gimplify_assign (tree, tree, gimple_seq *);
91
92#endif /* GCC_GIMPLIFY_H */
93

source code of gcc/gimplify.h