123 lines
4.0 KiB
C
123 lines
4.0 KiB
C
/* Callgraph handling code.
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Copyright (C) 2003 Free Software Foundation, Inc.
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Contributed by Jan Hubicka
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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 2, 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 COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#ifndef GCC_CGRAPH_H
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#define GCC_CGRAPH_H
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/* Information about the function collected locally.
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Available after function is lowered */
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struct cgraph_local_info
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{
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/* Set when function function is visiable in current compilation unit only
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and it's address is never taken. */
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bool local;
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/* Set when function is small enought to be inlinable many times. */
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bool inline_many;
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/* Set when function can be inlined once (false only for functions calling
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alloca, using varargs and so on). */
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bool can_inline_once;
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};
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/* Information about the function that needs to be computed globally
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once compilation is finished. Available only with -funit-at-time. */
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struct cgraph_global_info
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{
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/* Set when the function will be inlined exactly once. */
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bool inline_once;
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};
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/* Information about the function that is propagated by the RTL backend.
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Available only for functions that has been already assembled. */
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struct cgraph_rtl_info
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{
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bool const_function, pure_function;
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int preferred_incoming_stack_boundary;
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};
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/* The cgraph data strutcture.
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Each function decl has assigned cgraph_node listing calees and callers. */
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struct cgraph_node
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{
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tree decl;
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struct cgraph_edge *callees;
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struct cgraph_edge *callers;
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struct cgraph_node *next, *previous;
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/* For nested functions points to function the node is nested in. */
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struct cgraph_node *origin;
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/* Points to first nested function, if any. */
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struct cgraph_node *nested;
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/* Pointer to the next function with same origin, if any. */
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struct cgraph_node *next_nested;
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void *aux;
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/* Set when function must be output - it is externally visible
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or it's address is taken. */
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bool needed;
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/* Set when function is reachable by call from other function
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that is eighter reachable or needed. */
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bool reachable;
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/* Set when the frontend has been asked to lower representation of this
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function into trees. Callees lists are not available when lowered
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is not set. */
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bool lowered;
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/* Set when function is scheduled to be assembled. */
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bool output;
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struct cgraph_local_info local;
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struct cgraph_global_info global;
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struct cgraph_rtl_info rtl;
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};
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struct cgraph_edge
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{
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struct cgraph_node *caller, *callee;
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struct cgraph_edge *next_caller;
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struct cgraph_edge *next_callee;
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};
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extern struct cgraph_node *cgraph_nodes;
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extern int cgraph_n_nodes;
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extern bool cgraph_global_info_ready;
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/* In cgraph.c */
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void dump_cgraph PARAMS ((FILE *));
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void cgraph_remove_call PARAMS ((tree, tree));
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void cgraph_remove_node PARAMS ((struct cgraph_node *));
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struct cgraph_edge *cgraph_record_call PARAMS ((tree, tree));
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struct cgraph_node *cgraph_node PARAMS ((tree decl));
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bool cgraph_calls_p PARAMS ((tree, tree));
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struct cgraph_local_info *cgraph_local_info PARAMS ((tree));
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struct cgraph_global_info *cgraph_global_info PARAMS ((tree));
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struct cgraph_rtl_info *cgraph_rtl_info PARAMS ((tree));
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/* In cgraphunit.c */
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void cgraph_finalize_function PARAMS ((tree, tree));
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void cgraph_finalize_compilation_unit PARAMS ((void));
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void cgraph_create_edges PARAMS ((tree, tree));
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void cgraph_optimize PARAMS ((void));
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void cgraph_mark_needed_node PARAMS ((struct cgraph_node *, int));
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#endif /* GCC_CGRAPH_H */
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