2 * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation and appearing in the file LICENSE.GPL included in the
9 * packaging of this file.
11 * Licensees holding valid libFirm Professional Edition licenses may use
12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief Entry point to the representation of a whole program.
23 * @author Goetz Lindenmaier
27 * Intermediate Representation (IR) of a program.
29 * This file defines a construct that keeps all information about a
31 * - A reference point to the method to be executed on program start.
32 * - A list of all procedures.
33 * - A list of all types.
34 * - A global type that contains all global variables and procedures that do
35 * not belong to a class. This type represents the data segment of the
36 * program. It is not the base class of
37 * all classes in a class hierarchy (as, e.g., "object" in java).
38 * - A degenerated graph that contains constant expressions.
39 * - interprocedural outs state.
40 * - a flag indicating validity of the interprocedural representation.
41 * - the output file name
43 #ifndef FIRM_IR_IRPROG_H
44 #define FIRM_IR_IRPROG_H
46 #include "firm_types.h"
49 typedef enum ir_segment_t {
51 /** "normal" global data */
52 IR_SEGMENT_GLOBAL = IR_SEGMENT_FIRST,
53 /** thread local storage segment */
54 IR_SEGMENT_THREAD_LOCAL,
56 * the constructors segment. Contains pointers to functions which are
57 * executed on module initialization (program start or when a library is
60 IR_SEGMENT_CONSTRUCTORS,
61 /** like constructors, but functions are executed on module exit */
62 IR_SEGMENT_DESTRUCTORS,
68 * A variable pointing to the current irp (program or module).
69 * This variable should be considered constant. Moreover, one should use get_irp()
70 * to get access the the irp.
73 * Think of the irp as the "handle" of a program.
78 void irp_reserve_resources(ir_prog *irp, ir_resources_t resources);
79 void irp_free_resources(ir_prog *irp, ir_resources_t resources);
80 ir_resources_t irp_resources_reserved(const ir_prog *irp);
82 #define irp_reserve_resources(irp, resources)
83 #define irp_free_resources(irp, resources)
84 #define irp_resources_reserved(irp) 0
88 * Returns the current irp from where everything in the current module
93 ir_prog *get_irp(void);
96 * Creates a new ir_prog (a module or compilation unit),
97 * returns it and sets irp with it.
99 * @param name the name of this irp (module)
101 ir_prog *new_ir_prog(const char *name);
103 /** frees all memory used by irp. Types in type list and irgs in irg
104 * list must be freed by hand before. */
105 void free_ir_prog(void);
107 /** Sets the file name / executable name or the like. Initially the
108 ident 'no_name_set'. */
109 void set_irp_prog_name(ident *name);
111 /** Returns true if the user ever set a program name */
112 int irp_prog_name_is_set(void);
114 /** Gets the name of the current irp. */
115 ident *get_irp_ident(void);
117 /** Gets the name of the current irp. */
118 const char *get_irp_name(void);
120 /** Gets the main routine of the compiled program. */
121 ir_graph *get_irp_main_irg(void);
123 /** Sets the main routine of the compiled program. */
124 void set_irp_main_irg(ir_graph *main_irg);
126 /** Adds irg to the list of ir graphs in the current irp. */
127 void add_irp_irg(ir_graph *irg);
129 /** Removes irg from the list of irgs and
130 shrinks the list by one. */
131 void remove_irp_irg_from_list(ir_graph *irg);
132 /** Removes irg from the list of irgs, deallocates it and
133 shrinks the list by one. */
134 void remove_irp_irg(ir_graph *irg);
136 /** returns the biggest not used irg index number */
137 int get_irp_last_idx(void);
139 /** Returns the number of ir graphs in the irp. */
140 int get_irp_n_irgs(void);
142 /** Returns the ir graph at position pos in the irp. */
143 ir_graph *get_irp_irg(int pos);
145 /** Sets the ir graph at position pos. */
146 void set_irp_irg(int pos, ir_graph *irg);
148 /** Gets the number of graphs _and_ pseudo graphs. */
149 int get_irp_n_allirgs(void);
151 /** Returns the ir graph at position pos of all graphs (including
152 pseudo graphs). Visits first graphs, then pseudo graphs. */
153 ir_graph *get_irp_allirg(int pos);
156 * Returns the type containing the entities for a segment.
158 * @param segment the segment
160 ir_type *get_segment_type(ir_segment_t segment);
163 * Returns the "global" type of the irp.
164 * Upon creation this is an empty class type.
165 * This is a convenience function for get_segment_type(IR_SEGMENT_GLOBAL)
167 ir_type *get_glob_type(void);
170 * Returns the "thread local storage" type of the irp.
171 * Upon creation this is an empty struct type.
173 ir_type *get_tls_type(void);
175 /** Adds type to the list of types in irp. */
176 void add_irp_type(ir_type *typ);
178 /** Removes type from the list of types, deallocates it and
179 shrinks the list by one. */
180 void remove_irp_type(ir_type *typ);
182 /** Returns the number of all types in the irp. */
183 int get_irp_n_types(void);
185 /** Returns the type at position pos in the irp. */
186 ir_type *get_irp_type(int pos);
188 /** Overwrites the type at position pos with another type. */
189 void set_irp_type(int pos, ir_type *typ);
191 /** Returns the number of all modes in the irp. */
192 int get_irp_n_modes(void);
194 /** Returns the mode at position pos in the irp. */
195 ir_mode *get_irp_mode(int pos);
197 /** Adds opcode to the list of opcodes in irp. */
198 void add_irp_opcode(ir_op *opcode);
200 /** Removes opcode from the list of opcodes, deallocates it and
201 shrinks the list by one. */
202 void remove_irp_opcode(ir_op *opcode);
204 /** Returns the number of all opcodes in the irp. */
205 int get_irp_n_opcodes(void);
207 /** Returns the opcode at position pos in the irp. */
208 ir_op *get_irp_opcode(int pos);
210 /** Sets the generic function pointer of all opcodes to NULL */
211 void clear_irp_opcodes_generic_func(void);
214 /** Return the graph for global constants of the current irp.
216 * Returns an irgraph that only contains constant expressions for
217 * constant entities. Do not use any access function for this
218 * graph, do not generate code for this graph. This graph contains
219 * only one block. The constant expressions may not contain control
221 * Walking the graph starting from any node will not reach the block
222 * or any controlflow.
223 * See also copy_const_code() in entity.h.
225 ir_graph *get_const_code_irg(void);
228 /** The phase state for the program.
230 * The phase state of the whole program is
231 * building: if at least one graph is state_building
232 * or one type is incomplete.
233 * high: all graphs are in state high or low, all types are constructed.
234 * low: all graphs are in state low, all types are in state layout fixed.
236 irg_phase_state get_irp_phase_state(void);
237 void set_irp_phase_state(irg_phase_state s);
239 irg_outs_state get_irp_ip_outs_state(void);
240 void set_irp_ip_outs_inconsistent(void);
243 * Creates an ir_prog pass for set_irp_phase_state().
245 * @param name the name of this pass or NULL
246 * @param state the state to set
248 * @return the newly created ir_prog pass
250 ir_prog_pass_t *set_irp_phase_state_pass(const char *name, irg_phase_state state);
252 irg_callee_info_state get_irp_callee_info_state(void);
253 void set_irp_callee_info_state(irg_callee_info_state s);
255 /** Returns a new, unique exception region number. */
256 ir_exc_region_t get_irp_next_region_nr(void);
258 /** Returns a new, unique label number. */
259 ir_label_t get_irp_next_label_nr(void);
261 /** Add a new global asm include. */
262 void add_irp_asm(ident *asm_string);
264 /** Return the number of global asm includes. */
265 int get_irp_n_asms(void);
267 /** Return the global asm include at position pos. */
268 ident *get_irp_asm(int pos);