1 /* Header file for Nested function decomposition for GIMPLE.
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_NESTED_H
21 #define GCC_TREE_NESTED_H
22
23 extern tree build_addr (tree);
24 extern void insert_field_into_struct (tree, tree);
25 extern void lower_nested_functions (tree);
26
27 class nested_function_info
28 {
29 public:
30 /* Constructor. */
nested_function_info()31 nested_function_info ()
32 : origin (NULL),
33 nested (NULL),
34 next_nested (NULL)
35 {
36 }
37 /* Copy constructor. We can not simply copy the structure,
38 because the linked lists would go wrong. However we should never
39 need that. */
nested_function_info(const nested_function_info &)40 nested_function_info (const nested_function_info &)
41 {
42 gcc_unreachable ();
43 }
44 ~nested_function_info ();
45
46 /* Return nested_function_info, if available. */
47 static nested_function_info *get (cgraph_node *node);
48
49 /* Return nested_function_info possibly creating new one. */
50 static nested_function_info *get_create (cgraph_node *node);
51
52 /* Release all nested_function_infos. */
53 static void release (void);
54
55 /* For nested functions points to function the node is nested in. */
56 cgraph_node *origin;
57 /* Points to first nested function, if any. */
58 cgraph_node *nested;
59 /* Pointer to the next function with same origin, if any. */
60 cgraph_node *next_nested;
61 };
62
63 extern void maybe_record_nested_function (cgraph_node *node);
64 extern void unnest_function (cgraph_node *node);
65
66 /* If there are functions nested in NODE, return first one. */
67 inline cgraph_node *
first_nested_function(cgraph_node * node)68 first_nested_function (cgraph_node *node)
69 {
70 nested_function_info *info = nested_function_info::get (node);
71 return info ? info->nested : NULL;
72 }
73
74 /* Return next nested function (used to iterate from first_nested_function). */
75 inline cgraph_node *
next_nested_function(cgraph_node * node)76 next_nested_function (cgraph_node *node)
77 {
78 return nested_function_info::get (node)->next_nested;
79 }
80
81 /* Return origin of nested function (and NULL otherwise). */
82 inline cgraph_node *
nested_function_origin(cgraph_node * node)83 nested_function_origin (cgraph_node *node)
84 {
85 nested_function_info *info = nested_function_info::get (node);
86 return info ? info->origin : NULL;
87 }
88
89 #endif /* GCC_TREE_NESTED_H */
90