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