| 1 | /* Header file for Nested function decomposition for GIMPLE. |
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| 2 | Copyright (C) 2013-2023 Free Software Foundation, Inc. |
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| 3 | |
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| 4 | This file is part of GCC. |
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| 5 | |
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| 6 | GCC is free software; you can redistribute it and/or modify it under |
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| 7 | the terms of the GNU General Public License as published by the Free |
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| 8 | Software Foundation; either version 3, or (at your option) any later |
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| 9 | version. |
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| 10 | |
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| 11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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| 13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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| 14 | for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU General Public License |
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| 17 | along with GCC; see the file COPYING3. If not see |
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| 18 | <http://www.gnu.org/licenses/>. */ |
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| 19 | |
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| 20 | #ifndef GCC_TREE_NESTED_H |
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| 21 | #define GCC_TREE_NESTED_H |
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| 22 | |
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| 23 | extern tree build_addr (tree); |
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| 24 | extern void insert_field_into_struct (tree, tree); |
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| 25 | extern void lower_nested_functions (tree); |
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| 26 | |
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| 27 | class nested_function_info |
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| 28 | { |
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| 29 | public: |
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| 30 | /* Constructor. */ |
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| 31 | nested_function_info () |
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| 32 | : origin (NULL), |
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| 33 | nested (NULL), |
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| 34 | next_nested (NULL) |
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| 35 | { |
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| 36 | } |
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| 37 | /* Copy constructor. We can not simply copy the structure, |
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| 38 | because the linked lists would go wrong. However we should never |
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| 39 | need that. */ |
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| 40 | nested_function_info (const nested_function_info &) |
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| 41 | { |
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| 42 | gcc_unreachable (); |
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| 43 | } |
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| 44 | ~nested_function_info (); |
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| 45 | |
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| 46 | /* Return nested_function_info, if available. */ |
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| 47 | static nested_function_info *get (cgraph_node *node); |
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| 48 | |
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| 49 | /* Return nested_function_info possibly creating new one. */ |
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| 50 | static nested_function_info *get_create (cgraph_node *node); |
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| 51 | |
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| 52 | /* Release all nested_function_infos. */ |
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| 53 | static void release (void); |
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| 54 | |
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| 55 | /* For nested functions points to function the node is nested in. */ |
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| 56 | cgraph_node *origin; |
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| 57 | /* Points to first nested function, if any. */ |
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| 58 | cgraph_node *nested; |
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| 59 | /* Pointer to the next function with same origin, if any. */ |
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| 60 | cgraph_node *next_nested; |
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| 61 | }; |
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| 62 | |
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| 63 | extern void maybe_record_nested_function (cgraph_node *node); |
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| 64 | extern void unnest_function (cgraph_node *node); |
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| 65 | |
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| 66 | /* If there are functions nested in NODE, return first one. */ |
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| 67 | inline cgraph_node * |
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| 68 | first_nested_function (cgraph_node *node) |
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| 69 | { |
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| 70 | nested_function_info *info = nested_function_info::get (node); |
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| 71 | return info ? info->nested : NULL; |
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| 72 | } |
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| 73 | |
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| 74 | /* Return next nested function (used to iterate from first_nested_function). */ |
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| 75 | inline cgraph_node * |
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| 76 | next_nested_function (cgraph_node *node) |
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| 77 | { |
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| 78 | return nested_function_info::get (node)->next_nested; |
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| 79 | } |
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| 80 | |
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| 81 | /* Return origin of nested function (and NULL otherwise). */ |
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| 82 | inline cgraph_node * |
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| 83 | nested_function_origin (cgraph_node *node) |
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| 84 | { |
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| 85 | nested_function_info *info = nested_function_info::get (node); |
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| 86 | return info ? info->origin : NULL; |
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| 87 | } |
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| 88 | |
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| 89 | #endif /* GCC_TREE_NESTED_H */ |
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| 90 | |
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