typerep.h 66.8 KB
Newer Older
Christian Würdig's avatar
Christian Würdig committed
1
2
/*
 * This file is part of libFirm.
3
 * Copyright (C) 2012 University of Karlsruhe.
Christian Würdig's avatar
Christian Würdig committed
4
 */
yb9976's avatar
yb9976 committed
5
6
7

/**
 * @file
8
 * @brief Declarations for functions and datastructures to represent types
yb9976's avatar
yb9976 committed
9
 */
10
11
12
#ifndef FIRM_TYPEREP_H
#define FIRM_TYPEREP_H

13
14
#include <stddef.h>

15
16
17
#include "firm_types.h"

#include "begin.h"
18
19

/**
Matthias Braun's avatar
Matthias Braun committed
20
 * @defgroup ir_entity Entities
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
 *
 * An entity is the representation of program known objects in Firm.
 * The primary concept of entities is to represent members of complex
 * types, i.e., fields and methods of classes.  As not all programming
 * language model all variables and methods as members of some class,
 * the concept of entities is extended to cover also local and global
 * variables, and arbitrary procedures.
 *
 * An entity always specifies the type of the object it represents and
 * the type of the object it is a part of, the owner of the entity.
 * Originally this is the type of the class of which the entity is a
 * member.
 * The owner of local variables is the procedure they are defined in.
 * The owner of global variables and procedures visible in the whole
 * program is a universally defined class type "GlobalType".  The owner
 * of procedures defined in the scope of an other procedure is the
 * enclosing procedure.
 *
 * The type ir_entity is an abstract data type to represent program entities.
 * If contains the following attributes:
 *
 *   - owner:      A compound type this entity is a part of.
 *   - type:       The type of this entity.
Matthias Braun's avatar
Matthias Braun committed
44
45
 *   - name:       The string that represents this entity in the source program
 *   - linkage:    A flag indicating how the linker treats a symbol
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
 *   - offset:     The offset of the entity within the compound object in bytes.  Only set
 *                 if the owner in the state "layout_fixed".
 *   - offset_bits_remainder:   The offset bit remainder of a bitfield entity (in a compound)
 *                 in bits.  Only set if the owner in the state "layout_fixed".
 *   - overwrites: A list of entities overwritten by this entity.  This list is only
 *                 existent if the owner of this entity is a class.  The members in
 *                 this list must be entities of super classes.
 *   - overwrittenby: A list of entities that overwrite this entity.  This list is only
 *                 existent if the owner of this entity is a class.  The members in
 *                 this list must be entities of sub classes.
 *   - link:       A void* to associate some additional information with the entity.
 *   - irg:        If the entity is a method this is the ir graph that represents the
 *                 code of the method.
 *   - visited:    visited flag.  Master flag is type_visited.
 *
 * These fields can only be accessed via access functions.
 *
63
64
65
66
67
68
69
70
71
72
 * Overwrites is a field that specifies that an access to the overwritten
 * entity in the supertype must use this entity.  It's a list as with
 * multiple inheritance several entities can be overwritten.  This field
 * is mostly useful for method entities.
 * If a Sel node selects an entity that is overwritten by other entities it
 * must return a pointer to the entity of the dynamic type of the pointer
 * that is passed to it.  Lowering of the Sel node must assure this.
 * Overwrittenby is the inverse of overwrites.  Both add routines add
 * both relations, they only differ in the order of arguments.
 *
Matthias Braun's avatar
Matthias Braun committed
73
 * @{
74
75
 */

76
77
78
79
80
/**
 * Visibility classed for entities.
 */
typedef enum {
	/**
Matthias Braun's avatar
Matthias Braun committed
81
82
	 * The entity is visible across compilation units. It might have an
	 * initializer/graph.
83
84
85
	 * Note that entities with visibility_external without initializer are
	 * assumed to be defined in another compilation unit (not like C variables
	 * which are considered 'uninitialized' in this case).
86
	 */
Matthias Braun's avatar
Matthias Braun committed
87
	ir_visibility_external,
88
	/**
89
	 * The entity is visible across compilation units, but not across modules.
90
91
92
	 * This is equivalent to __attribute__((visibility("hidden"))) in gcc.
	 */
	ir_visibility_external_private,
93
94
95
96
97
98
99
100
	/**
	 * The entity is local to the compilation unit.
	 * A local entity is not visible in other compilation units.
	 * Note that the entity might still be accessed indirectly from other units
	 * through pointers.
	 */
	ir_visibility_local,
	/**
Matthias Braun's avatar
Matthias Braun committed
101
102
	 * This has the same semantic as visibility_local. Additionally the symbol
	 * is completely hidden from the linker (it only appears in the assembly).
103
104
105
106
	 * While visibility_local is probably still visible to debuggers,
	 * visibility_private symbols aren't and probably won't appear in the object
	 * files
	 */
Matthias Braun's avatar
Matthias Braun committed
107
	ir_visibility_private,
108
109
} ir_visibility;

Matthias Braun's avatar
Matthias Braun committed
110
111
/**
 * linkage specifies how the linker treats symbols
112
 */
113
typedef enum ir_linkage {
114
	IR_LINKAGE_DEFAULT         = 0,
Matthias Braun's avatar
Matthias Braun committed
115
116
	/**
	 * A symbol whose definition won't change in a program.
yb9976's avatar
yb9976 committed
117
	 * Optimization might replace loads from this entity with constants.
Matthias Braun's avatar
Matthias Braun committed
118
119
120
	 * Also most linkers put such data in a constant segment which is shared
	 * between multiple running instances of the same application.
	 */
121
	IR_LINKAGE_CONSTANT        = 1 << 0,
Matthias Braun's avatar
Matthias Braun committed
122
123
124
125
126
127
	/**
	 * The entity is a weak symbol.
	 * A weak symbol is overridden by a non-weak symbol if one exists.
	 * Most linkers only support the IR_LINKAGE_WEAK in combination with
	 * IR_LINKAGE_MERGE.
	 */
128
	IR_LINKAGE_WEAK            = 1 << 1,
Matthias Braun's avatar
Matthias Braun committed
129
130
131
132
133
	/**
	 * The entity may be removed when it isn't referenced anywhere in the
	 * compilation unit even if it is exported (non-local).
	 * Typically used for C++ instantiated template code (,,COMDAT'' section).
	 */
134
	IR_LINKAGE_GARBAGE_COLLECT = 1 << 2,
Matthias Braun's avatar
Matthias Braun committed
135
136
137
138
139
140
	/**
	 * The linker will try to merge entities with same name from different
	 * compilation units. This is the usual behaviour for global variables
	 * without explicit initialisation in C (``COMMON'' symbols). It's also
	 * typically used in C++ for instantiated template code (,,COMDAT'' section)
	 */
141
	IR_LINKAGE_MERGE           = 1 << 3,
Matthias Braun's avatar
Matthias Braun committed
142
143
144
145
146
147
148
149
	/**
	 * Some entity uses are potentially hidden from the compiler.
	 * (For example because they happen in an asm("") statement. This flag
	 *  should be set for __attribute__((used)) in C code).
	 * Setting this flag prohibits that the compiler making assumptions about
	 * read/write behaviour to global variables or changing calling conventions
	 * from cdecl to fastcall.
	 */
150
151
152
153
154
155
156
157
158
	IR_LINKAGE_HIDDEN_USER     = 1 << 4,
	/**
	 * Do not generate code even if the entity has a graph attached. The graph
	 * is only used for inlining. Otherwise the entity is regarded as a
	 * declaration of an externally defined entity.
	 * This linkage flag can be used to implement C99 "inline" or GNU89
	 * "extern inline".
	 */
	IR_LINKAGE_NO_CODEGEN      = 1 << 5,
Matthias Braun's avatar
Matthias Braun committed
159
} ir_linkage;
160
ENUM_BITSET(ir_linkage)
Matthias Braun's avatar
Matthias Braun committed
161
162

/**
163
 * Returns the visibility class of an entity
Matthias Braun's avatar
Matthias Braun committed
164
 */
Michael Beck's avatar
Michael Beck committed
165
FIRM_API ir_visibility get_entity_visibility(const ir_entity *entity);
Matthias Braun's avatar
Matthias Braun committed
166
167

/**
168
 * Sets visibility class of an entity
Matthias Braun's avatar
Matthias Braun committed
169
 */
Michael Beck's avatar
Michael Beck committed
170
FIRM_API void set_entity_visibility(ir_entity *entity, ir_visibility visibility);
Matthias Braun's avatar
Matthias Braun committed
171
172

/**
173
 * Returns 1 if the entity is visible outside the current compilation unit
174
175
176
177
178
 * or to unknown callers (like asm statements).
 * (The entity might still be accessible indirectly through pointers)
 * This is a convenience function and does the same as
 * get_entity_visibility(entity) != ir_visibility_local ||
 * (get_entity_linkage(entity) & IR_LINKAGE_HIDDEN_USER)
Matthias Braun's avatar
Matthias Braun committed
179
 */
Michael Beck's avatar
Michael Beck committed
180
FIRM_API int entity_is_externally_visible(const ir_entity *entity);
Matthias Braun's avatar
Matthias Braun committed
181
182

/**
183
 * Returns 1 if the entity has a definition (initializer) in the current
184
185
 * compilation unit. Note that this function returns false if
 * IR_LINKAGE_NO_CODEGEN is set even if a graph is present.
Matthias Braun's avatar
Matthias Braun committed
186
 */
Michael Beck's avatar
Michael Beck committed
187
FIRM_API int entity_has_definition(const ir_entity *entity);
188
189
190
191
192
193

/**
 * Creates a new entity.
 *
 * Automatically inserts the entity as a member of owner.
 * Entity is automatic_allocated and uninitialized except if the type
194
 * is type_method, then it is static_allocated and constant.
195
196
 * Visibility is local, offset -1, and it is not volatile.
 */
Michael Beck's avatar
Michael Beck committed
197
FIRM_API ir_entity *new_entity(ir_type *owner, ident *name, ir_type *tp);
198

199
200
201
202
203
204
205
/**
 * Creates a new entity corresponding to a function parameter.
 * This must be created on an irgs frame_type
 */
FIRM_API ir_entity *new_parameter_entity(ir_type *owner, size_t pos,
                                         ir_type *type);

206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
/**
 * Creates a new entity aliasing another entity.
 * An aliasing entity is a logically separate entity with its own name,
 * but instead of having a definition the linker will merge the name with
 * the definition of the aliased entity.
 * In gcc this feature is known as __attribute__((alias())).
 *
 * @param owner  owning type (must be a global segment)
 * @param name   name of the entity
 * @param alias  entity that is aliased
 * @param type   type of the aliased entity, should but need not be the same
 *               type as the one of the aliased entity
 * @return       the newly created entity
 */
FIRM_API ir_entity *new_alias_entity(ir_type *owner, ident *name,
                                     ir_entity *alias, ir_type *type);

/**
 * Sets the entity an alias entity aliases.
 */
FIRM_API void set_entity_alias(ir_entity *alias, ir_entity *aliased);

/**
 * Returns the entity aliased by an alias entity.
 */
FIRM_API ir_entity *get_entity_alias(const ir_entity *alias);

Matthias Braun's avatar
Matthias Braun committed
233
/**
Christoph Mallon's avatar
Christoph Mallon committed
234
 * Check an entity.
Matthias Braun's avatar
Matthias Braun committed
235
 *
236
 * @return non-zero if no errors were found
Matthias Braun's avatar
Matthias Braun committed
237
 */
238
FIRM_API int check_entity(const ir_entity *ent);
Matthias Braun's avatar
Matthias Braun committed
239

240
241
242
243
244
245
246
247
/**
 * Copies the entity if the new_owner is different from the
 * owner of the old entity,  else returns the old entity.
 *
 * Automatically inserts the new entity as a member of owner.
 * Resets the overwrites/overwritten_by fields.
 * Keeps the old atomic value.
 */
Michael Beck's avatar
Michael Beck committed
248
FIRM_API ir_entity *copy_entity_own(ir_entity *old, ir_type *new_owner);
249
250
251
252
253
254
255
256
257

/**
 * Copies the entity if the new_name is different from the
 * name of the old entity, else returns the old entity.
 *
 * Automatically inserts the new entity as a member of owner.
 * The mangled name ld_name is set to NULL.
 * Overwrites relation is copied from old.
 */
Michael Beck's avatar
Michael Beck committed
258
FIRM_API ir_entity *copy_entity_name(ir_entity *old, ident *new_name);
259
260
261
262
263
264
265

/**
 * Frees the entity.
 *
 * The owner will still contain the pointer to this
 * entity, as well as all other references!
 */
Michael Beck's avatar
Michael Beck committed
266
FIRM_API void free_entity(ir_entity *ent);
267
268

/** Returns the name of an entity. */
Michael Beck's avatar
Michael Beck committed
269
FIRM_API const char *get_entity_name(const ir_entity *ent);
270
271

/** Returns the ident of an entity. */
Michael Beck's avatar
Michael Beck committed
272
FIRM_API ident *get_entity_ident(const ir_entity *ent);
273
274

/** Sets the ident of the entity. */
Michael Beck's avatar
Michael Beck committed
275
FIRM_API void set_entity_ident(ir_entity *ent, ident *id);
276
277
278
279
280
281
282

/** Returns the mangled name of the entity.
 *
 * If the mangled name is set it returns the existing name.
 * Else it generates a name with mangle_entity()
 * and remembers this new name internally.
 */
Michael Beck's avatar
Michael Beck committed
283
FIRM_API ident *get_entity_ld_ident(const ir_entity *ent);
284
285

/** Sets the mangled name of the entity. */
Michael Beck's avatar
Michael Beck committed
286
FIRM_API void set_entity_ld_ident(ir_entity *ent, ident *ld_ident);
287
288

/** Returns the mangled name of the entity as a string. */
Michael Beck's avatar
Michael Beck committed
289
FIRM_API const char *get_entity_ld_name(const ir_entity *ent);
290

291
292
293
/** returns 1 if the entity has an ld_ident set explicitely */
FIRM_API int entity_has_ld_ident(const ir_entity *entity);

294
/** Returns the owner of the entity. */
Michael Beck's avatar
Michael Beck committed
295
FIRM_API ir_type *get_entity_owner(const ir_entity *ent);
296

297
298
299
300
301
/**
 * Sets the owner field in entity to owner.
 * Automatically removes entity from old owner type and adds it to the new
 * one.
 */
Michael Beck's avatar
Michael Beck committed
302
FIRM_API void set_entity_owner(ir_entity *ent, ir_type *owner);
303
304

/** Returns the type of an entity. */
Michael Beck's avatar
Michael Beck committed
305
FIRM_API ir_type *get_entity_type(const ir_entity *ent);
306
307

/** Sets the type of an entity. */
Michael Beck's avatar
Michael Beck committed
308
FIRM_API void set_entity_type(ir_entity *ent, ir_type *tp);
309

Matthias Braun's avatar
Matthias Braun committed
310
/** Returns the linkage of an entity. */
Michael Beck's avatar
Michael Beck committed
311
FIRM_API ir_linkage get_entity_linkage(const ir_entity *entity);
312

313
/** Sets the linkage flags of entity @p entity to @p linkage. */
Michael Beck's avatar
Michael Beck committed
314
FIRM_API void set_entity_linkage(ir_entity *entity, ir_linkage linkage);
315
/** Adds linkage flags @p linkage to entity @p entity. */
Michael Beck's avatar
Michael Beck committed
316
FIRM_API void add_entity_linkage(ir_entity *entity, ir_linkage linkage);
317
/** Remove linkage flags @p linkage from entity @p entity. */
Michael Beck's avatar
Michael Beck committed
318
FIRM_API void remove_entity_linkage(ir_entity *entity, ir_linkage linkage);
319

Matthias Braun's avatar
Matthias Braun committed
320
321
322
323
/**
 * Returns the volatility of an entity.
 * @deprecated
 */
Michael Beck's avatar
Michael Beck committed
324
FIRM_API ir_volatility get_entity_volatility(const ir_entity *ent);
325

Matthias Braun's avatar
Matthias Braun committed
326
327
328
329
/**
 * Sets the volatility of an entity.
 * @deprecated
 */
Michael Beck's avatar
Michael Beck committed
330
FIRM_API void set_entity_volatility(ir_entity *ent, ir_volatility vol);
331

332
/** Returns the name of the volatility. */
Michael Beck's avatar
Michael Beck committed
333
FIRM_API const char *get_volatility_name(ir_volatility var);
334

Matthias Braun's avatar
Matthias Braun committed
335
/** Returns alignment of entity in bytes */
Michael Beck's avatar
Michael Beck committed
336
FIRM_API unsigned get_entity_alignment(const ir_entity *entity);
Matthias Braun's avatar
Matthias Braun committed
337

Matthias Braun's avatar
Matthias Braun committed
338
/** Allows you to override the type alignment for an entity.
339
 * @param entity      the entity
Matthias Braun's avatar
Matthias Braun committed
340
341
 * @param alignment   alignment in bytes
 */
Michael Beck's avatar
Michael Beck committed
342
FIRM_API void set_entity_alignment(ir_entity *entity, unsigned alignment);
Matthias Braun's avatar
Matthias Braun committed
343

Matthias Braun's avatar
Matthias Braun committed
344
/**
345
 * Returns indication whether entity is aligned in memory.
Matthias Braun's avatar
Matthias Braun committed
346
347
 * @deprecated
 */
Michael Beck's avatar
Michael Beck committed
348
FIRM_API ir_align get_entity_aligned(const ir_entity *ent);
349

Matthias Braun's avatar
Matthias Braun committed
350
/**
351
 * Sets indication whether entity is aligned in memory
Matthias Braun's avatar
Matthias Braun committed
352
353
 * @deprecated
 */
Michael Beck's avatar
Michael Beck committed
354
FIRM_API void set_entity_aligned(ir_entity *ent, ir_align a);
355

356
/** Returns the name of the alignment. */
Michael Beck's avatar
Michael Beck committed
357
FIRM_API const char *get_align_name(ir_align a);
Michael Beck's avatar
Michael Beck committed
358

359
360
/** Returns the offset of an entity (in a compound) in bytes. Only set if
 * layout = fixed. */
361
FIRM_API int get_entity_offset(const ir_entity *entity);
362
363

/** Sets the offset of an entity (in a compound) in bytes. */
364
FIRM_API void set_entity_offset(ir_entity *entity, int offset);
365

366
367
/** For bitfields, returns the offset in bits to the bitfield base. */
FIRM_API unsigned get_entity_bitfield_offset(const ir_entity *entity);
368

369
370
371
372
373
374
375
376
/** Sets the offset in bits to the base for a bitfield. */
FIRM_API void set_entity_bitfield_offset(ir_entity *entity, unsigned offset);

/** Sets the size in bits for a bitfield. 0 means not a bitfield. */
FIRM_API void set_entity_bitfield_size(ir_entity *entity, unsigned size);

/** Returns the size in bits for a bitfield, 0 if entity is not a bitfield. */
FIRM_API unsigned get_entity_bitfield_size(const ir_entity *entity);
377
378

/** Returns the stored intermediate information. */
Michael Beck's avatar
Michael Beck committed
379
FIRM_API void *get_entity_link(const ir_entity *ent);
380
381

/** Stores new intermediate information. */
Michael Beck's avatar
Michael Beck committed
382
FIRM_API void set_entity_link(ir_entity *ent, void *l);
383

384
/**
385
386
387
388
 * Return the method graph of a method entity.
 * @warning If it is a weak symbol, then this is not necessarily the final code
 *          bound to the entity. If you are writing an analysis use
 *          get_entity_linktime_irg()!
389
 */
Michael Beck's avatar
Michael Beck committed
390
FIRM_API ir_graph *get_entity_irg(const ir_entity *ent);
391

392
393
394
395
396
397
398
399
/**
 * Return the method graph the method entity points to after linking.
 * This is different to get_entity_irg() in case of weak symbols where this
 * function returns NULL because the code may be replaced by a non-weak symbol
 * after linking.
 */
FIRM_API ir_graph *get_entity_linktime_irg(const ir_entity *ent);

400
401
402
/** A reserved value for "not yet set". */
#define IR_VTABLE_NUM_NOT_SET ((unsigned)(-1))

403
/** Returns the entity vtable number. */
Michael Beck's avatar
Michael Beck committed
404
FIRM_API unsigned get_entity_vtable_number(const ir_entity *ent);
405
406

/** Sets the entity vtable number. */
Michael Beck's avatar
Michael Beck committed
407
FIRM_API void set_entity_vtable_number(ir_entity *ent, unsigned vtable_number);
408

409
/** Sets label number of an entity with code type */
Michael Beck's avatar
Michael Beck committed
410
FIRM_API void set_entity_label(ir_entity *ent, ir_label_t label);
411
/** Returns label number of an entity with code type */
Michael Beck's avatar
Michael Beck committed
412
FIRM_API ir_label_t get_entity_label(const ir_entity *ent);
413

414
/**
415
 * Bitfield type indicating the way an entity is used.
416
417
 */
typedef enum {
Michael Beck's avatar
Michael Beck committed
418
419
420
421
422
423
424
	ir_usage_none             = 0,      /**< This entity is unused. */
	ir_usage_address_taken    = 1 << 0, /**< The address of this entity was taken. */
	ir_usage_write            = 1 << 1, /**< The entity was written to. */
	ir_usage_read             = 1 << 2, /**< The entity was read. */
	ir_usage_reinterpret_cast = 1 << 3, /**< The entity was read but with a wrong mode
	                                         (an implicit reinterpret cast) */
	/** Unknown access */
425
426
427
428
429
	ir_usage_unknown
		= ir_usage_address_taken | ir_usage_write | ir_usage_read
		| ir_usage_reinterpret_cast
} ir_entity_usage;

430
/** Returns the entity usage */
Michael Beck's avatar
Michael Beck committed
431
FIRM_API ir_entity_usage get_entity_usage(const ir_entity *ent);
432
433

/** Sets/resets the state of the address taken flag of an entity. */
Michael Beck's avatar
Michael Beck committed
434
FIRM_API void set_entity_usage(ir_entity *ent, ir_entity_usage flag);
435

436
437
438
439
440
/**
 * Returns the debug information of an entity.
 *
 * @param ent The entity.
 */
Michael Beck's avatar
Michael Beck committed
441
FIRM_API dbg_info *get_entity_dbg_info(const ir_entity *ent);
442
443
444
445
446
447
448

/**
 * Sets the debug information of an entity.
 *
 * @param ent The entity.
 * @param db  The debug info.
 */
Michael Beck's avatar
Michael Beck committed
449
FIRM_API void set_entity_dbg_info(ir_entity *ent, dbg_info *db);
450

451
452
453
454
455
456
457
458
/**
 * Sepcial parameter number which can be used for parameter entities to
 * indicate the first non-declared parameter in a procedure with variable
 * arguments.
 * We assumes that all additional parameters for variable parameters are on the
 * stack. Starting from this address you can walk the stack to find all other
 * parameters.
 */
459
460
#define IR_VA_START_PARAMETER_NUMBER  ((size_t)-1)

461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
/**
 * returns true if a given entity is a parameter_entity representing the
 * address of a function parameter
 */
FIRM_API int is_parameter_entity(const ir_entity *entity);

/**
 * returns number of parameter a parameter entitiy represents
 */
FIRM_API size_t get_entity_parameter_number(const ir_entity *entity);

/**
 * set number of parameter an entity represents
 */
FIRM_API void set_entity_parameter_number(ir_entity *entity, size_t n);

477
/** Returns initial value of entity with atomic type @p ent. */
478
FIRM_API ir_node *get_atomic_ent_value(const ir_entity *ent);
479
480
/** Sets initial value of entity with atomic type @p ent to node @p val.
 * @note @p val must be a node in the const_code graph */
Michael Beck's avatar
Michael Beck committed
481
FIRM_API void set_atomic_ent_value(ir_entity *ent, ir_node *val);
482

Matthias Braun's avatar
Matthias Braun committed
483
484
485
486
/** @defgroup ir_initializer  Entity Initializers
 * @{
 */

487
488
/** the kind (type) of an initializer */
typedef enum ir_initializer_kind_t {
489
	/** initializer containing an ir_node from the const-code irg */
490
	IR_INITIALIZER_CONST,
491
	/** initializer containing a tarval */
492
	IR_INITIALIZER_TARVAL,
493
	/** initializes type with default values (usually 0) */
494
	IR_INITIALIZER_NULL,
495
	/** list of initializers used to initializer a compound or array type */
496
497
498
	IR_INITIALIZER_COMPOUND
} ir_initializer_kind_t;

499
/** Returns kind of an initializer */
Michael Beck's avatar
Michael Beck committed
500
FIRM_API ir_initializer_kind_t get_initializer_kind(const ir_initializer_t *initializer);
501

502
/** Returns the name of the initializer kind. */
Michael Beck's avatar
Michael Beck committed
503
FIRM_API const char *get_initializer_kind_name(ir_initializer_kind_t ini);
504

505
/**
506
 * Returns the null initializer (there's only one instance of it in a program )
507
 */
Michael Beck's avatar
Michael Beck committed
508
FIRM_API ir_initializer_t *get_initializer_null(void);
509
510

/**
511
 * Creates an initializer containing a reference to a node on the const-code
512
513
 * irg.
 */
Michael Beck's avatar
Michael Beck committed
514
FIRM_API ir_initializer_t *create_initializer_const(ir_node *value);
515

516
/** Creates an initializer containing a single tarval value */
Matthias Braun's avatar
Matthias Braun committed
517
FIRM_API ir_initializer_t *create_initializer_tarval(ir_tarval *tv);
518

519
/** Returns value contained in a const initializer */
Michael Beck's avatar
Michael Beck committed
520
FIRM_API ir_node *get_initializer_const_value(const ir_initializer_t *initializer);
521

522
/** Returns value contained in a tarval initializer */
Matthias Braun's avatar
Matthias Braun committed
523
FIRM_API ir_tarval *get_initializer_tarval_value(const ir_initializer_t *initialzier);
524

525
/** Creates a compound initializer which holds @p n_entries entries */
526
FIRM_API ir_initializer_t *create_initializer_compound(size_t n_entries);
527

528
/** Returns the number of entries in a compound initializer */
529
FIRM_API size_t get_initializer_compound_n_entries(const ir_initializer_t *initializer);
530

531
/** Sets entry with index @p index to the initializer @p value */
Michael Beck's avatar
Michael Beck committed
532
FIRM_API void set_initializer_compound_value(ir_initializer_t *initializer,
533
                                             size_t index,
534
                                             ir_initializer_t *value);
535

536
/** Returns the value with index @p index of a compound initializer */
Michael Beck's avatar
Michael Beck committed
537
FIRM_API ir_initializer_t *get_initializer_compound_value(
538
		const ir_initializer_t *initializer, size_t index);
539

Matthias Braun's avatar
Matthias Braun committed
540
541
/** @} */

542
/** Sets the new style initializers of an entity. */
Michael Beck's avatar
Michael Beck committed
543
FIRM_API void set_entity_initializer(ir_entity *entity, ir_initializer_t *initializer);
544

545
/** Returns the new style initializers of an entity. */
Michael Beck's avatar
Michael Beck committed
546
FIRM_API ir_initializer_t *get_entity_initializer(const ir_entity *entity);
547

548
/** Adds entity @p ent to the list of entities that overwrite @p overwritten. */
Michael Beck's avatar
Michael Beck committed
549
FIRM_API void add_entity_overwrites(ir_entity *ent, ir_entity *overwritten);
550
551
/** Returns the number of entities in the list of entities that overwrite
 * entity @p ent. */
552
FIRM_API size_t get_entity_n_overwrites(const ir_entity *ent);
553
554
555
556
557
/** Returns index of @p overwritten in list of entities overwriting entity
 * @p ent. */
FIRM_API size_t get_entity_overwrites_index(const ir_entity *ent,
                                            ir_entity *overwritten);
/** Returns entry @p pos in list of entities overwriting entity @p ent. */
558
FIRM_API ir_entity *get_entity_overwrites(const ir_entity *ent, size_t pos);
559
560
561
562
/** Sets entry @p pos in list of entities overwriting entity @p ent. */
FIRM_API void set_entity_overwrites(ir_entity *ent, size_t pos,
                                    ir_entity *overwritten);
/** Remove @p overwritten from list of entities overwriting entity @p ent. */
Michael Beck's avatar
Michael Beck committed
563
FIRM_API void remove_entity_overwrites(ir_entity *ent, ir_entity *overwritten);
564

565
/** Returns number of entities overwritten by @p ent. */
566
FIRM_API size_t get_entity_n_overwrittenby(const ir_entity *ent);
567
568
569
570
571
/** Returns index of @p overwrites in list of entities overwritten by entity
 * @p ent. */
FIRM_API size_t get_entity_overwrittenby_index(const ir_entity *ent,
                                               ir_entity *overwrites);
/** Return entry @p pos in list of entities overwritten by entity @p ent. */
572
FIRM_API ir_entity *get_entity_overwrittenby(const ir_entity *ent, size_t pos);
573
574
575
576
577
578
/** Sets entry @p pos in list of entities overwritten by entity @p ent. */
FIRM_API void set_entity_overwrittenby(ir_entity *ent, size_t pos,
                                       ir_entity *overwrites);
/** Removes entry @p overwrites in list of entities overwritten by @p ent. */
FIRM_API void remove_entity_overwrittenby(ir_entity *ent,
                                          ir_entity *overwrites);
579
580

/** Returns true if the type of the entity is a primitive, pointer
581
 * or method type.
582
 *
yb9976's avatar
yb9976 committed
583
 * @note This is a different classification than from is_primitive_type().
584
 */
Michael Beck's avatar
Michael Beck committed
585
FIRM_API int is_atomic_entity(const ir_entity *ent);
586
587
/** Returns true if the type of the entity is a class, structure,
   array or union type. */
Michael Beck's avatar
Michael Beck committed
588
FIRM_API int is_compound_entity(const ir_entity *ent);
589
/** Returns true if the entity is a method entity. */
Michael Beck's avatar
Michael Beck committed
590
FIRM_API int is_method_entity(const ir_entity *ent);
591
592
/** Returns true if the entity is an alias entity. */
FIRM_API int is_alias_entity(const ir_entity *ent);
593
594
595
596
597

/** Outputs a unique number for this entity if libfirm is compiled for
 *  debugging, (configure with --enable-debug) else returns the address
 *  of the type cast to long.
 */
Michael Beck's avatar
Michael Beck committed
598
FIRM_API long get_entity_nr(const ir_entity *ent);
599

600
601
/** Returns the entities visited counter.
 * @see @ref visited_counters */
Michael Beck's avatar
Michael Beck committed
602
FIRM_API ir_visited_t get_entity_visited(const ir_entity *ent);
603

604
605
/** Sets the entities visited counter.
 * @see @ref visited_counters */
Michael Beck's avatar
Michael Beck committed
606
FIRM_API void set_entity_visited(ir_entity *ent, ir_visited_t num);
607

608
609
/** Marks entity as visited.
 * @see @ref visited_counters */
Michael Beck's avatar
Michael Beck committed
610
FIRM_API void mark_entity_visited(ir_entity *ent);
611

612
613
/** Returns true if this entity was visited.
 * @see @ref visited_counters */
Michael Beck's avatar
Michael Beck committed
614
FIRM_API int entity_visited(const ir_entity *ent);
615

616
617
/** Returns true if this entity was not visited.
 * @see @ref visited_counters */
Michael Beck's avatar
Michael Beck committed
618
FIRM_API int entity_not_visited(const ir_entity *ent);
619

620
621
622
623
624
625
/** Return true if this entity can be queried for additional properties.
 *
 * This is possible for method and alias entities.
 */
FIRM_API int entity_has_additional_properties(const ir_entity *entity);

626
627
628
629
630
631
632
/**
 * Returns the mask of the additional entity properties.
 * The properties are automatically inherited from the irg if available
 * or from the method type if they were not set using
 * set_entity_additional_properties() or
 * set_entity_additional_property().
 */
633
FIRM_API mtp_additional_properties get_entity_additional_properties(const ir_entity *ent);
634
635

/** Sets the mask of the additional graph properties. */
Michael Beck's avatar
Michael Beck committed
636
FIRM_API void set_entity_additional_properties(ir_entity *ent,
637
                                               mtp_additional_properties prop);
638

639
640
641
/** Sets additional graph properties. */
FIRM_API void add_entity_additional_properties(ir_entity *ent,
                                               mtp_additional_properties flag);
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663

/**
 * @page unknown_entity  The Unknown entity
 *
 *  This entity is an auxiliary entity dedicated to support analyses.
 *
 *  The unknown entity represents that there could be an entity, but it is not
 *  known.  This entity can be used to initialize fields before an analysis (not known
 *  yet) or to represent the top of a lattice (could not be determined).  There exists
 *  exactly one entity unknown. This entity has as owner and as type the unknown type. It is
 *  allocated when initializing the entity module.
 *
 *  The entity can take the role of any entity, also methods.  It returns default
 *  values in these cases.
 *
 *  The following values are set:
 *
 * - name          = "unknown_entity"
 * - ld_name       = "unknown_entity"
 * - owner         = unknown_type
 * - type          = unknown_type
 * - offset        = -1
664
 * - value         = Address(unknown_entity)
665
666
667
668
669
670
671
672
673
674
 * - values        = NULL
 * - val_paths     = NULL
 * - volatility    = volatility_non_volatile
 * - stickyness    = stickyness_unsticky
 * - ld_name       = NULL
 * - overwrites    = NULL
 * - overwrittenby = NULL
 * - irg           = NULL
 * - link          = NULL
 */
675

676
/** Returns the @link unknown_entity unknown entity @endlink. */
Michael Beck's avatar
Michael Beck committed
677
FIRM_API ir_entity *get_unknown_entity(void);
678

679
680
681
682
/** Tests whether entity @p entity is (the) unknown entity.
 * @returns 1 if it is the unknown entity, 0 otherwise */
FIRM_API int is_unknown_entity(const ir_entity *entity);

Matthias Braun's avatar
Matthias Braun committed
683
684
/** @} */

685
/** Encodes how a pointer parameter is accessed. */
686
typedef enum ptr_access_kind {
Michael Beck's avatar
Michael Beck committed
687
688
689
690
691
692
	ptr_access_none  = 0,                                 /**< no access */
	ptr_access_read  = 1,                                 /**< read access */
	ptr_access_write = 2,                                 /**< write access */
	ptr_access_rw    = ptr_access_read|ptr_access_write,  /**< read AND write access */
	ptr_access_store = 4,                                 /**< the pointer is stored */
	ptr_access_all   = ptr_access_rw|ptr_access_store     /**< all possible access */
693
} ptr_access_kind;
694
ENUM_BITSET(ptr_access_kind)
695
696

/**
Matthias Braun's avatar
Matthias Braun committed
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
 * @defgroup ir_type Type System
 *
 *  Datastructure to hold type information.
 *
 *  This module supplies a datastructure to represent all types
 *  known in the compiled program.  This includes types specified
 *  in the program as well as types defined by the language.  In the
 *  view of the intermediate representation there is no difference
 *  between these types.  Finally it specifies some auxiliary types.
 *
 *  There exist several kinds of types, arranged by the structure of
 *  the type.  A type is described by a set of attributes.  Some of
 *  these attributes are common to all types, others depend on the
 *  kind of the type.
 *
 *  Types are different from the modes defined in irmode:  Types are
 *  on the level of the programming language, modes at the level of
 *  the target processor.
 *
 * @{
 */

/**
 * @defgroup tp_op  Type Opcodes
721
722
 *  This module specifies the kinds of types available in firm.
 *
723
724
725
726
 *  They are called type opcodes. These include classes, structs, methods,
 *  unions, arrays, pointers and primitive types.
 *  Special types with own opcodes are the id type, a type representing an
 *  unknown type and a type used to specify that something has no type.
Matthias Braun's avatar
Matthias Braun committed
727
728
 *
 * @{
729
730
731
732
733
734
 */

/**
 *  An enum for the type kinds.
 *  For each type kind exists a typecode to identify it.
 */
735
typedef enum tp_opcode {
736
737
738
739
740
741
742
743
	tpo_uninitialized = 0,   /* not a type opcode */
	tpo_class,               /**< A class type. */
	tpo_struct,              /**< A struct type. */
	tpo_method,              /**< A method type. */
	tpo_union,               /**< An union type. */
	tpo_array,               /**< An array type. */
	tpo_pointer,             /**< A pointer type. */
	tpo_primitive,           /**< A primitive type. */
744
	tpo_code,                /**< a piece of code (a basic block) */
745
	tpo_unknown,             /**< Special code for the Unknown type. */
746
	tpo_last = tpo_unknown   /* not a type opcode */
747
748
749
750
751
752
753
754
} tp_opcode;

/**
 * A structure containing information about a kind of type.
 * A structure containing information about a kind of type.  So far
 * this is only the kind name, an enum for case-switching and some
 * internal values.
 *
755
 * @see  get_tpop_name(), get_tpop_code()
756
757
758
759
760
761
762
763
 */
typedef struct tp_op tp_op;


/**
 * Returns the string for the type opcode.
 *
 * @param op  The type opcode to get the string from.
764
 * @return    a string.
765
 */
Michael Beck's avatar
Michael Beck committed
766
FIRM_API const char *get_tpop_name(const tp_op *op);
767
768
769
770
771
772
773

/**
 * Returns an enum for the type opcode.
 *
 * @param op   The type opcode to get the enum from.
 * @return the enum.
 */
Michael Beck's avatar
Michael Beck committed
774
FIRM_API tp_opcode get_tpop_code(const tp_op *op);
775

Matthias Braun's avatar
Matthias Braun committed
776
/** @} */
777
778
779
780
781
782
783

/** Returns true if low is subclass of high.
 *
 *  Low is a subclass of high if low == high or if low is a subclass of
 *  a subclass of high.  I.e, we search in all subtypes of high for low.
 *  @@@ this can be implemented more efficient if we know the set of all
 *  subclasses of high.  */
784
FIRM_API int is_SubClass_of(const ir_type *low, const ir_type *high);
785
786
787
788
789
790
791

/** Subclass check for pointers to classes.
 *
 *  Dereferences at both types the same amount of pointer types (as
 *  many as possible).  If the remaining types are both class types
 *  and subclasses, returns true, else false.  Can also be called with
 *  two class types.  */
Michael Beck's avatar
Michael Beck committed
792
FIRM_API int is_SubClass_ptr_of(ir_type *low, ir_type *high);
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812

/** Returns true if high is superclass of low.
 *
 *  Low is a subclass of high if low == high or if low is a subclass of
 *  a subclass of high.  I.e, we search in all subtypes of high for low.
 *  @@@ this can be implemented more efficient if we know the set of all
 *  subclasses of high.  */
#define is_SuperClass_of(high, low) is_SubClass_of(low, high)

/** Superclass check for pointers to classes.
 *
 *  Dereferences at both types the same amount of pointer types (as
 *  many as possible).  If the remaining types are both class types
 *  and superclasses, returns true, else false.  Can also be called with
 *  two class types.  */
#define is_SuperClass_ptr_of(low, high) is_SubClass_ptr_of(high, low)

/** Returns true if high is (transitive) overwritten by low.
 *
 *  Returns false if high == low. */
Michael Beck's avatar
Michael Beck committed
813
FIRM_API int is_overwritten_by(ir_entity *high, ir_entity *low);
814
815
816
817
818
819

/** Resolve polymorphism in the inheritance relation.
 *
 *  Returns the dynamically referenced entity if the static entity and the
 *  dynamic type are given.
 *  Searches downwards in overwritten tree. */
Michael Beck's avatar
Michael Beck committed
820
FIRM_API ir_entity *resolve_ent_polymorphy(ir_type *dynamic_class,
821
                                           ir_entity* static_ent);
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837

/* ----------------------------------------------------------------------- */
/* The transitive closure of the subclass/superclass and                   */
/* overwrites/overwrittenby relation.                                      */
/*                                                                         */
/* A walk over the ir (O(#types+#entities)) computes the transitive        */
/* closure.  Adding a new type/entity or changing the basic relations in   */
/* some other way invalidates the transitive closure, i.e., it is not      */
/* updated by the basic functions.                                         */
/*                                                                         */
/* The transitive edges are held in a set, not in an array as the          */
/* underlying relation.                                                    */
/*                                                                         */
/* Do the sets contain the node itself?  I assume NOT!                     */
/* ----------------------------------------------------------------------- */

838
839
840
/**
 * The state of the transitive closure.
 */
841
842
843
844
845
846
847
typedef enum {
	inh_transitive_closure_none,       /**<  Closure is not computed, can not be accessed. */
	inh_transitive_closure_valid,      /**<  Closure computed and valid. */
	inh_transitive_closure_invalid,    /**<  Closure invalid, but can be accessed. */
	inh_transitive_closure_max         /**<  Invalid value. */
} inh_transitive_closure_state;

848
849
/** Sets the transitive closure of sub/superclass state for the
 * whole program. */
Michael Beck's avatar
Michael Beck committed
850
FIRM_API void set_irp_inh_transitive_closure_state(inh_transitive_closure_state s);
851
852
/** Sets the transitive closure of sub/superclass state for the
 * whole program to #inh_transitive_closure_invalid */
Michael Beck's avatar
Michael Beck committed
853
FIRM_API void invalidate_irp_inh_transitive_closure_state(void);
854
855
/** Returns the transitive closure of sub/superclass state for the
 * whole program. */
Michael Beck's avatar
Michael Beck committed
856
FIRM_API inh_transitive_closure_state get_irp_inh_transitive_closure_state(void);
857
858
859
860

/** Compute transitive closure of the subclass/superclass and
 * overwrites/overwrittenby relation.
 *
861
 * This function walks over the ir (O(\#types+\#entities)) to compute the
862
 * transitive closure.    */
Michael Beck's avatar
Michael Beck committed
863
FIRM_API void compute_inh_transitive_closure(void);
864
865

/** Free memory occupied by the transitive closure information. */
Michael Beck's avatar
Michael Beck committed
866
FIRM_API void free_inh_transitive_closure(void);
867

868
/** Start iteration over all transitive subtypes of @p tp */
Michael Beck's avatar
Michael Beck committed
869
FIRM_API ir_type *get_class_trans_subtype_first(const ir_type *tp);
870
871
872
873
/**
 * Returns next type in a subtype iteration started by
 * get_class_trans_subtype_first()
 */
Michael Beck's avatar
Michael Beck committed
874
FIRM_API ir_type *get_class_trans_subtype_next(const ir_type *tp);
875
876
877
878
879
/**
 * Check if @p subtp is a subtype of @p tp. This function checks the full
 * transitive closure of the subtype relation and not just direct subtyping.
 * @return 1 if it is a subtype, 0 otherwise
 */
Michael Beck's avatar
Michael Beck committed
880
FIRM_API int is_class_trans_subtype(const ir_type *tp, const ir_type *subtp);
881

882
/** Start iteration over all transitive supertypes of @p tp */
Michael Beck's avatar
Michael Beck committed
883
FIRM_API ir_type *get_class_trans_supertype_first(const ir_type *tp);
884
885
886
887
/**
 * Returns next type in a supertype iteration started by
 * get_class_trans_supertype_first()
 */
Michael Beck's avatar
Michael Beck committed
888
FIRM_API ir_type *get_class_trans_supertype_next(const ir_type *tp);
889

890
/** Start iteration over all entities that transitive overwrite entity @p ent.*/
Michael Beck's avatar
Michael Beck committed
891
FIRM_API ir_entity *get_entity_trans_overwrittenby_first(const ir_entity *ent);
892
893
894
895
/**
 * Returns next entity in a overwrittenby iteration started by
 * get_entity_trans_overwrittenby_first()
 */
Michael Beck's avatar
Michael Beck committed
896
FIRM_API ir_entity *get_entity_trans_overwrittenby_next(const ir_entity *ent);
897

898
899
/** Start iteration over all transitive overwritten entities, overwritten by
 * entity @p ent */
Michael Beck's avatar
Michael Beck committed
900
FIRM_API ir_entity *get_entity_trans_overwrites_first(const ir_entity *ent);
901
902
903
904
/**
 * Returns next entity in a overwrites iteration started by
 * get_entity_trans_overwrites_first()
 */
Michael Beck's avatar
Michael Beck committed
905
FIRM_API ir_entity *get_entity_trans_overwrites_next(const ir_entity *ent);
906
907
908
909
910


/**
 * Checks a type.
 *
911
 * @return non-zero if no errors were found
912
 */
913
FIRM_API int check_type(const ir_type *tp);
914
915
916
917

/**
 * Walks the type information and performs a set of sanity checks.
 *
918
 * @return 0 in case of an error
919
 */
920
FIRM_API int tr_verify(void);
921

922
923
/**
 * Frees the memory used by the type.
Götz Lindenmaier's avatar
comment    
Götz Lindenmaier committed
924
 *
925
926
 * Removes the type from the type list and frees all entities
 * belonging to the type.
Matthias Braun's avatar
Matthias Braun committed
927
 */
Michael Beck's avatar
Michael Beck committed
928
FIRM_API void free_type(ir_type *tp);
929

930
/** Returns type opcode of type @p tp */
Michael Beck's avatar
Michael Beck committed
931
FIRM_API const tp_op *get_type_tpop(const ir_type *tp);
932
/** Returns name identifier of type opcode of type @p tp */
Michael Beck's avatar
Michael Beck committed
933
FIRM_API ident *get_type_tpop_nameid(const ir_type *tp);
934
/** Returns name of type opcode of type @p tp */
Michael Beck's avatar
Michael Beck committed
935
FIRM_API const char *get_type_tpop_name(const ir_type *tp);
936
/** Returns opcode of type opcode of type @p tp */
Michael Beck's avatar
Michael Beck committed
937
FIRM_API tp_opcode get_type_tpop_code(const ir_type *tp);
938

939
940
941
942
943
944
945
946
947
/**
 * construct a string representing the type.
 * This uses the info retrieved by the type_dbg_info if available.
 * Otherwise it tries to create an approximate textual representation of the
 * type.
 * Keep in mind that this representation is not unique for each type,
 * might abstract away some details. The main intention of this is creating
 * human redable strings giving an idea of the type.
 */
Michael Beck's avatar
Michael Beck committed
948
FIRM_API void ir_print_type(char *buffer, size_t buffer_size,
949
                            const ir_type *tp);
950

951
/** The state of the type layout. */
952
typedef enum {
Michael Beck's avatar
Michael Beck committed
953
954
955
	layout_undefined,    /**< The layout of this type is not defined.
	                          Address computation to access fields is not
	                          possible, fields must be accessed by Sel
956
	                          nodes.
Michael Beck's avatar
Michael Beck committed
957
958
959
	                          This is the default value except for
	                          pointer, primitive and method types. */
	layout_fixed         /**< The layout is fixed, all component/member entities
960
961
962
963
964
	                          have an offset assigned. Size of the type is
	                          known. Arrays can be accessed by explicit address
	                          computation.
	                          Default for pointer, primitive and method types.
	                          */
965
} ir_type_state;
966

Götz Lindenmaier's avatar
Götz Lindenmaier committed
967
/** Returns a human readable string for the enum entry. */
Michael Beck's avatar
Michael Beck committed
968
FIRM_API const char *get_type_state_name(ir_type_state s);
Götz Lindenmaier's avatar
Götz Lindenmaier committed
969

970
/** Returns the type layout state of a type. */
Michael Beck's avatar
Michael Beck committed
971
FIRM_API ir_type_state get_type_state(const ir_type *tp);
972
973
974
975
976
977

/** Sets the type layout state of a type.
 *
 * For primitives, pointer and method types the layout is always fixed.
 * This call is legal but has no effect.
 */
Michael Beck's avatar
Michael Beck committed
978
FIRM_API void set_type_state(ir_type *tp, ir_type_state state);
979

980
981
982
983
/** Returns the mode of a type.
 *
 * Returns NULL for all non atomic types.
 */
Michael Beck's avatar
Michael Beck committed
984
FIRM_API ir_mode *get_type_mode(const ir_type *tp);
985
986
987

/** Sets the mode of a type.
 *
988
 * Only has an effect on primitive and pointer types.
989
 */
Michael Beck's avatar
Michael Beck committed
990
FIRM_API void set_type_mode(ir_type *tp, ir_mode* m);
991

992
/** Returns the size of a type in bytes. */
Michael Beck's avatar
Michael Beck committed
993
FIRM_API unsigned get_type_size_bytes(const ir_type *tp);
994
995
996

/** Sets the size of a type in bytes.
 *
997
998
 * For primitive, pointer and method types the size is always fixed.
 * This call is legal but has no effect.
999
 */
Michael Beck's avatar
Michael Beck committed
1000
FIRM_API void set_type_size_bytes(ir_type *tp, unsigned size);
1001

Matthias Braun's avatar
Matthias Braun committed
1002
/** Returns the alignment of a type in bytes. */
1003
FIRM_API unsigned get_type_alignment_bytes(const ir_type *tp);
1004

1005
/** Sets the alignment of a type in bytes. */
Michael Beck's avatar
Michael Beck committed
1006
FIRM_API void set_type_alignment_bytes(ir_type *tp, unsigned align);
Michael Beck's avatar
Michael Beck committed
1007