89576d863a
this patch moves nested function information out of symbol table (to a summary). This saves memory (especially at WPA time) and also makes nested function support more contained. gcc/ChangeLog: 2020-10-22 Jan Hubicka <hubicka@ucw.cz> * cgraph.c: Include tree-nested.h (cgraph_node::create): Call maybe_record_nested_function. (cgraph_node::remove): Do not remove function from nested function infos. (cgraph_node::dump): Update. (cgraph_node::unnest): Move to tree-nested.c (cgraph_node::verify_node): Update. (cgraph_c_finalize): Call nested_function_info::release. * cgraph.h (struct symtab_node): Remove nested function info. * cgraphclones.c (cgraph_node::create_clone): Do not clone nested function info. * cgraphunit.c (cgraph_node::analyze): Update. (cgraph_node::expand): Do not worry about nested functions; they are lowered. (symbol_table::finalize_compilation_unit): Call nested_function_info::release. * gimplify.c: Include tree-nested.h (unshare_body): Update. (unvisit_body): Update. * omp-offload.c (omp_discover_implicit_declare_target): Update. * tree-nested.c: Include alloc-pool.h, tree-nested.h, symbol-summary.h (nested_function_sum): New static variable. (nested_function_info::get): New member function. (nested_function_info::get_create): New member function. (unnest_function): New function. (nested_function_info::~nested_function_info): New member function. (nested_function_info::release): New function. (maybe_record_nested_function): New function. (lookup_element_for_decl): Update. (check_for_nested_with_variably_modified): Update. (create_nesting_tree): Update. (unnest_nesting_tree_1): Update. (gimplify_all_functions): Update. (lower_nested_functions): Update. * tree-nested.h (class nested_function_info): New class. (maybe_record_nested_function): Declare. (unnest_function): Declare. (first_nested_function): New inline function. (next_nested_function): New inline function. (nested_function_origin): New inline function. gcc/ada/ChangeLog: 2020-10-22 Jan Hubicka <hubicka@ucw.cz> * gcc-interface/trans.c: Include tree-nested.h (walk_nesting_tree): Update for new nested function info. gcc/c-family/ChangeLog: 2020-10-22 Jan Hubicka <hubicka@ucw.cz> * c-gimplify.c: Include tree-nested.h (c_genericize): Update for new nested function info. gcc/d/ChangeLog: 2020-10-22 Jan Hubicka <hubicka@ucw.cz> * decl.cc: Include tree-nested.h (get_symbol_decl): Update for new nested function info.
90 lines
2.7 KiB
C++
90 lines
2.7 KiB
C++
/* Header file for Nested function decomposition for GIMPLE.
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Copyright (C) 2013-2020 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_TREE_NESTED_H
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#define GCC_TREE_NESTED_H
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extern tree build_addr (tree);
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extern void insert_field_into_struct (tree, tree);
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extern void lower_nested_functions (tree);
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class nested_function_info
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{
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public:
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/* Constructor. */
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nested_function_info ()
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: origin (NULL),
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nested (NULL),
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next_nested (NULL)
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{
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}
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/* Copy constructor. We can not simply copy the structure,
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because the linked lists would go wrong. However we should never
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need that. */
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nested_function_info (const nested_function_info &)
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{
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gcc_unreachable ();
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}
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~nested_function_info ();
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/* Return nested_function_info, if available. */
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static nested_function_info *get (cgraph_node *node);
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/* Return nested_function_info possibly creating new one. */
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static nested_function_info *get_create (cgraph_node *node);
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/* Release all nested_function_infos. */
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static void release (void);
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/* For nested functions points to function the node is nested in. */
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cgraph_node *origin;
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/* Points to first nested function, if any. */
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cgraph_node *nested;
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/* Pointer to the next function with same origin, if any. */
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cgraph_node *next_nested;
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};
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extern void maybe_record_nested_function (cgraph_node *node);
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extern void unnest_function (cgraph_node *node);
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/* If there are functions nested in NODE, return first one. */
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inline cgraph_node *
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first_nested_function (cgraph_node *node)
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{
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nested_function_info *info = nested_function_info::get (node);
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return info ? info->nested : NULL;
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}
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/* Return next nested function (used to iterate from first_nested_function). */
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inline cgraph_node *
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next_nested_function (cgraph_node *node)
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{
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return nested_function_info::get (node)->next_nested;
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}
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/* Return origin of nested function (and NULL otherwise). */
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inline cgraph_node *
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nested_function_origin (cgraph_node *node)
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{
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nested_function_info *info = nested_function_info::get (node);
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return info ? info->origin : NULL;
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}
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#endif /* GCC_TREE_NESTED_H */
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