2 * Copyright (C) 1995-2010 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 Definition of opaque firm types
23 * @author Michael Beck
25 #ifndef FIRM_COMMON_FIRM_TYPES_H
26 #define FIRM_COMMON_FIRM_TYPES_H
30 typedef unsigned long ir_visited_t;
31 typedef unsigned long ir_exc_region_t;
32 typedef unsigned long ir_label_t;
34 typedef struct dbg_info dbg_info, *dbg_info_ptr;
35 typedef struct type_dbg_info type_dbg_info, *type_dbg_info_ptr;
36 typedef struct ident ident, *ir_ident_ptr;
37 typedef struct ir_node ir_node, *ir_node_ptr;
38 typedef struct ir_op ir_op, *ir_op_ptr;
39 typedef struct ir_mode ir_mode, *ir_mode_ptr;
40 typedef struct ir_edge_t ir_edge_t, *ir_edge_ptr;
41 typedef struct ir_heights_t ir_heights_t;
42 typedef struct ir_tarval ir_tarval, *ir_tarval_ptr;
43 typedef struct ir_enum_const ir_enum_const, *ir_enum_const_ptr;
44 typedef struct ir_type ir_type, *ir_type_ptr;
45 typedef struct ir_graph ir_graph, *ir_graph_ptr;
46 typedef struct ir_prog ir_prog, *ir_prog_ptr;
47 typedef struct ir_loop ir_loop, *ir_loop_ptr;
48 typedef struct ir_region ir_region, *ir_region_ptr;
49 typedef struct ir_entity ir_entity, *ir_entity_ptr;
50 typedef struct ir_extblk ir_extblk, *ir_extblk_ptr;
51 typedef struct ir_exec_freq ir_exec_freq, *ir_exec_freq_ptr;
52 typedef struct ir_cdep ir_cdep, *ir_cdep_ptr;
53 typedef struct sn_entry *seqno_t;
54 typedef struct arch_irn_ops_t arch_irn_ops_t;
55 typedef struct ir_graph_pass_t ir_graph_pass_t;
56 typedef struct ir_prog_pass_t ir_prog_pass_t;
58 typedef struct ir_graph_pass_manager_t ir_graph_pass_manager_t;
59 typedef struct ir_prog_pass_manager_t ir_prog_pass_manager_t;
61 typedef union ir_initializer_t ir_initializer_t, *ir_initializer_ptr;
63 typedef void irg_walk_func(ir_node *, void *);
64 typedef void irg_reg_walk_func(ir_region *, void *);
67 * A switch table mapping integer numbers to proj-numbers of a Switch-node.
68 * Entries map a continuous range of integer numbers to a proj-number.
69 * There must never be two different entries matching the same integer number.
71 typedef struct ir_switch_table ir_switch_table;
73 /* Needed for MSVC to suppress warnings because it doest NOT handle const right. */
74 typedef const ir_node *ir_node_cnst_ptr;
79 * This function is called, whenever a local variable is used before definition
81 * @param irg the IR graph on which this happens
82 * @param mode the mode of the local var
83 * @param pos position chosen be the frontend for this variable (n_loc)
85 * @return a firm node of mode @p mode that initializes the var at position pos
89 * If this function is not set, FIRM will create a const node with tarval BAD.
90 * Use set_irg_loc_description()/get_irg_loc_description() to assign additional
91 * informations to local variables.
93 typedef ir_node *uninitialized_local_variable_func_t(ir_graph *irg, ir_mode *mode, int pos);
96 # define ENUM_BITSET(type) \
98 static inline type operator ~ (type a) { return (type)~(int)a; } \
99 static inline type operator & (type a, type b) { return (type)((int)a & (int)b); } \
100 static inline type operator &= (type& a, type b) { return a = (type)((int)a & (int)b); } \
101 static inline type operator ^ (type a, type b) { return (type)((int)a ^ (int)b); } \
102 static inline type operator ^= (type& a, type b) { return a = (type)((int)a ^ (int)b); } \
103 static inline type operator | (type a, type b) { return (type)((int)a | (int)b); } \
104 static inline type operator |= (type& a, type b) { return a = (type)((int)a | (int)b); } \
107 # define ENUM_BITSET(type)
111 # define ENUM_COUNTABLE(type) \
113 static inline type operator ++(type& a) { return a = (type)((int)a + 1); } \
114 static inline type operator --(type& a) { return a = (type)((int)a - 1); } \
117 # define ENUM_COUNTABLE(type)
121 * Relations for comparing numbers
123 typedef enum ir_relation {
124 ir_relation_false = 0, /**< always false */
125 ir_relation_equal = 1u << 0, /**< equal */
126 ir_relation_less = 1u << 1, /**< less */
127 ir_relation_greater = 1u << 2, /**< greater */
128 ir_relation_unordered = 1u << 3, /**< unordered */
129 ir_relation_less_equal = ir_relation_equal|ir_relation_less, /**< less or equal */
130 ir_relation_greater_equal = ir_relation_equal|ir_relation_greater, /**< greater or equal */
131 ir_relation_less_greater = ir_relation_less|ir_relation_greater, /** less or greater ('not equal' for integer numbers) */
132 ir_relation_less_equal_greater = ir_relation_equal|ir_relation_less|ir_relation_greater, /**< less equal or greater ('not unordered') */
133 ir_relation_unordered_equal = ir_relation_unordered|ir_relation_equal, /**< unordered or equal */
134 ir_relation_unordered_less = ir_relation_unordered|ir_relation_less, /**< unordered or less */
135 ir_relation_unordered_less_equal = ir_relation_unordered|ir_relation_less|ir_relation_equal, /**< unordered, less or equal */
136 ir_relation_unordered_greater = ir_relation_unordered|ir_relation_greater, /**< unordered or greater */
137 ir_relation_unordered_greater_equal = ir_relation_unordered|ir_relation_greater|ir_relation_equal, /**< unordered, greater or equal */
138 ir_relation_unordered_less_greater = ir_relation_unordered|ir_relation_less|ir_relation_greater, /**< unordered, less or greater ('not equal' for floatingpoint numbers) */
139 ir_relation_true = ir_relation_equal|ir_relation_less|ir_relation_greater|ir_relation_unordered, /**< always true */
141 ENUM_BITSET(ir_relation)
144 * constrained flags for memory operations.
146 typedef enum ir_cons_flags {
147 cons_none = 0, /**< No constrains. */
148 cons_volatile = 1U << 0, /**< Memory operation is volatile. */
149 cons_unaligned = 1U << 1, /**< Memory operation is unaligned. */
150 cons_floats = 1U << 2, /**< Memory operation can float. */
151 cons_throws_exception = 1U << 3, /**< fragile op throws exception (and
152 produces X_regular and X_except
155 ENUM_BITSET(ir_cons_flags)
157 /** op_pin_state_pinned states. */
158 typedef enum op_pin_state {
159 op_pin_state_floats = 0, /**< Nodes of this opcode can be placed in any basic block. */
160 op_pin_state_pinned = 1, /**< Nodes must remain in this basic block. */
161 op_pin_state_exc_pinned, /**< Node must be remain in this basic block if it can throw an
162 exception, else can float. Used internally. */
163 op_pin_state_mem_pinned /**< Node must be remain in this basic block if it can throw an
164 exception or uses memory, else can float. Used internally. */
168 * A type to express conditional jump predictions.
170 typedef enum cond_jmp_predicate {
171 COND_JMP_PRED_NONE, /**< No jump prediction. Default. */
172 COND_JMP_PRED_TRUE, /**< The True case is predicted. */
173 COND_JMP_PRED_FALSE /**< The False case is predicted. */
174 } cond_jmp_predicate;
177 * Additional method type properties:
178 * Tell about special properties of a method type. Some
179 * of these may be discovered by analyses.
181 typedef enum mtp_additional_properties {
182 mtp_no_property = 0x00000000, /**< no additional properties, default */
183 mtp_property_const = 0x00000001, /**< This method did not access memory and calculates
184 its return values solely from its parameters.
185 The only observable effect of a const function must be its
186 return value. So they must not exhibit infinite loops or wait
187 for user input. The return value must not depend on any
188 global variables/state.
189 GCC: __attribute__((const)). */
190 mtp_property_pure = 0x00000002, /**< This method did NOT write to memory and calculates
191 its return values solely from its parameters and
192 the memory they points to (or global vars).
193 The only observable effect of a const function must be its
194 return value. So they must not exhibit infinite loops or wait
196 GCC: __attribute__((pure)). */
197 mtp_property_noreturn = 0x00000004, /**< This method did not return due to an aborting system
199 GCC: __attribute__((noreturn)). */
200 mtp_property_nothrow = 0x00000008, /**< This method cannot throw an exception.
201 GCC: __attribute__((nothrow)). */
202 mtp_property_naked = 0x00000010, /**< This method is naked.
203 GCC: __attribute__((naked)). */
204 mtp_property_malloc = 0x00000020, /**< This method returns newly allocate memory.
205 GCC: __attribute__((malloc)). */
206 mtp_property_returns_twice = 0x00000040, /**< This method can return more than one (typically setjmp).
207 GCC: __attribute__((returns_twice)). */
208 mtp_property_intrinsic = 0x00000080, /**< This method is intrinsic. It is expected that
209 a lowering phase will remove all calls to it. */
210 mtp_property_runtime = 0x00000100, /**< This method represents a runtime routine. */
211 mtp_property_private = 0x00000200, /**< All method invocations are known, the backend is free to
212 optimize the call in any possible way. */
213 mtp_property_has_loop = 0x00000400, /**< Set, if this method contains one possible endless loop. */
214 mtp_property_inherited = (1<<31) /**< Internal. Used only in irg's, means property is
215 inherited from type. */
216 } mtp_additional_properties;
217 ENUM_BITSET(mtp_additional_properties)
219 /** This enum names the different kinds of symbolic Constants represented by
220 * SymConst. The content of the attribute symconst_symbol depends on this tag.
221 * Use the proper access routine after testing this flag. */
222 typedef enum symconst_kind {
223 symconst_type_size, /**< The SymConst is the size of the given type.
224 symconst_symbol is type *. */
225 symconst_type_align, /**< The SymConst is the alignment of the given type.
226 symconst_symbol is type *. */
227 symconst_addr_ent, /**< The SymConst is a symbolic pointer to be filled in
228 by the linker. The pointer is represented by an entity.
229 symconst_symbol is entity *. */
230 symconst_ofs_ent, /**< The SymConst is the offset of its entity in the entities
232 symconst_enum_const /**< The SymConst is a enumeration constant of an
236 /** SymConst attribute.
238 * This union contains the symbolic information represented by the node.
240 typedef union symconst_symbol {
241 ir_type *type_p; /**< The type of a SymConst. */
242 ir_entity *entity_p; /**< The entity of a SymConst. */
243 ir_enum_const *enum_p; /**< The enumeration constant of a SymConst. */
246 /** The allocation place. */
247 typedef enum ir_where_alloc {
248 stack_alloc, /**< Alloc allocates the object on the stack. */
249 heap_alloc /**< Alloc allocates the object on the heap. */
252 /** A input/output constraint attribute. */
253 typedef struct ir_asm_constraint {
254 unsigned pos; /**< The inputs/output position for this constraint. */
255 ident *constraint; /**< The constraint for this input/output. */
256 ir_mode *mode; /**< The mode of the constraint. */
259 /** Supported libFirm builtins. */
260 typedef enum ir_builtin_kind {
261 ir_bk_trap, /**< GCC __builtin_trap(): insert trap */
262 ir_bk_debugbreak, /**< MS __debugbreak(): insert debug break */
263 ir_bk_return_address, /**< GCC __builtin_return_address() */
264 ir_bk_frame_address, /**< GCC __builtin_frame_address() */
265 ir_bk_prefetch, /**< GCC __builtin_prefetch() */
266 ir_bk_ffs, /**< GCC __builtin_ffs(): find first (least) significant 1 bit */
267 ir_bk_clz, /**< GCC __builtin_clz(): count leading zero */
268 ir_bk_ctz, /**< GCC __builtin_ctz(): count trailing zero */
269 ir_bk_popcount, /**< GCC __builtin_popcount(): population count */
270 ir_bk_parity, /**< GCC __builtin_parity(): parity */
271 ir_bk_bswap, /**< byte swap */
272 ir_bk_inport, /**< in port */
273 ir_bk_outport, /**< out port */
274 ir_bk_inner_trampoline, /**< address of a trampoline for GCC inner functions */
275 ir_bk_last = ir_bk_inner_trampoline,
279 * Possible return values of value_classify().
281 typedef enum ir_value_classify_sign {
282 value_classified_unknown = 0, /**< could not classify */
283 value_classified_positive = 1, /**< value is positive, i.e. >= 0 */
284 value_classified_negative = -1 /**< value is negative, i.e. <= 0 if
285 no signed zero exists or < 0 else */
286 } ir_value_classify_sign;
289 * This enumeration flags the volatility of entities and Loads/Stores.
292 volatility_non_volatile, /**< The entity is not volatile. Default. */
293 volatility_is_volatile /**< The entity is volatile. */
297 * This enumeration flags the align of Loads/Stores.
300 align_is_aligned = 0, /**< The entity is aligned. Default */
301 align_non_aligned, /**< The entity is not aligned. */