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 Definition of the Firm IR base types, concentrated here
23 * @author Michael Beck
26 #ifndef FIRM_IR_IRDEFS_H
27 #define FIRM_IR_IRDEFS_H
29 #include "firm_types.h"
30 #include "firm_common_t.h"
35 #include "iredgekinds.h"
36 #include "irtypeinfo.h"
37 #include "execution_frequency.h"
39 #include "callgraph.h"
40 #include "field_temperature.h"
41 #include "irphases_t.h"
50 /** The type of an ir_op. */
52 unsigned code; /**< The unique opcode of the op. */
53 ident *name; /**< The name of the op. */
54 size_t attr_size; /**< Space needed in memory for private attributes. */
55 op_pin_state pin_state; /**< How to deal with the node in CSE, PRE. */
56 op_arity opar; /**< The arity of operator. */
57 int op_index; /**< The index of the first data operand, 0 for most cases, 1 for Div etc. */
58 unsigned flags; /**< Flags describing the behavior of the ir_op, a bitmasks of irop_flags. */
59 unsigned tag; /**< Some custom TAG value the op's creator set to. */
60 void *attr; /**< custom pointer where op's creator can attach attribute stuff to. */
62 ir_op_ops ops; /**< The operations of the this op. */
66 * Contains relevant information about a mode.
68 * Necessary information about a mode is stored in this struct
69 * which is used by the tarval module to perform calculations
70 * and comparisons of values of a such described mode.
73 * - ir_modecode code: An unambiguous int (enum) for the mode
74 * - ident *name: Name of this mode. Two modes are different if the name is different.
75 * - ir_mode_sort sort: sort of mode specifying possible usage categories
76 * - int size: size of the mode in Bits.
77 * - unsigned sign:1: signedness of this mode
79 * - modulo_shift specifies for modes of kind irms_int_number
80 * whether shift applies modulo to value of bits to shift
83 * The tech report 1999-44 describing FIRM and predefined modes
87 firm_kind kind; /**< distinguishes this node from others */
88 ir_modecode code; /**< unambiguous identifier of a mode */
89 ident *name; /**< Name ident of this mode */
91 /* ----------------------------------------------------------------------- */
92 /* On changing this struct you have to evaluate the mode_are_equal function!*/
93 ir_mode_sort sort; /**< coarse classification of this mode:
94 int, float, reference ...
97 arithmetic; /**< different arithmetic operations possible with a mode */
98 unsigned size; /**< size of the mode in Bits. */
99 unsigned sign:1; /**< signedness of this mode */
100 unsigned int modulo_shift; /**< number of bits a values of this mode will be shifted */
101 unsigned vector_elem; /**< if this is not equal 1, this is a vector mode with
102 vector_elem number of elements, size contains the size
103 of all bits and must be dividable by vector_elem */
105 /* ----------------------------------------------------------------------- */
106 tarval *min; /**< the minimum value that can be expressed */
107 tarval *max; /**< the maximum value that can be expressed */
108 tarval *null; /**< the value 0 */
109 tarval *one; /**< the value 1 */
110 tarval *minus_one; /**< the value -1 */
111 tarval *all_one; /**< the value ~0 */
112 ir_mode *eq_signed; /**< For pointer modes, the equivalent signed integer one. */
113 ir_mode *eq_unsigned; /**< For pointer modes, the equivalent unsigned integer one. */
114 void *link; /**< To store some intermediate information */
115 const void *tv_priv; /**< tarval module will save private data here */
118 /** ir node attributes **/
120 /** Block attributes */
122 /* General attributes */
123 ir_graph *irg; /**< The graph this block belongs to. */
124 unsigned long block_visited; /**< For the walker that walks over all blocks. */
125 /* Attributes private to construction: */
126 unsigned is_matured:1; /**< If set, all in-nodes of the block are fixed. */
127 unsigned is_dead:1; /**< If set, the block is dead (and could be replace by a Bad. */
128 unsigned is_mb_head:1; /**< Set if this block is a macroblock head. */
129 unsigned has_label:1; /**< Set if this block has a label assigned. */
130 unsigned marked:1; /**< Can be set/unset to temporary mark a block. */
131 ir_node **graph_arr; /**< An array to store all parameters. */
132 /* Attributes holding analyses information */
133 ir_dom_info dom; /**< Datastructure that holds information about dominators.
135 Eventually overlay with graph_arr as only valid
136 in different phases. Eventually inline the whole
138 ir_dom_info pdom; /**< Datastructure that holds information about post-dominators. */
139 ir_node ** in_cg; /**< array with predecessors in
140 * interprocedural_view, if they differ
141 * from intraprocedural predecessors */
142 unsigned *backedge; /**< Raw Bitfield n set to true if pred n is backedge.*/
143 unsigned *cg_backedge; /**< Raw Bitfield n set to true if pred n is interprocedural backedge. */
144 ir_extblk *extblk; /**< The extended basic block this block belongs to. */
145 ir_region *region; /**< The immediate structural region this block belongs to. */
146 unsigned mb_depth; /**< The macroblock depth: A distance from the macroblock header */
147 ir_label_t label; /**< The block label if assigned. */
148 ir_node *phis; /**< The list of Phi nodes in this block. */
150 struct list_head succ_head; /**< A list head for all successor edges of a block. */
153 /** Cond attributes. */
155 cond_kind kind; /**< flavor of Cond */
156 long default_proj; /**< only for non-binary Conds: biggest Proj number, i.e. the one used for default. */
157 cond_jmp_predicate pred; /**< only for binary Conds: The jump predication. */
160 /** Const attributes. */
162 tarval *tv; /**< the target value */
163 ir_type *tp; /**< the source type, for analyses. default: type_unknown. */
166 /** SymConst attributes. */
168 symconst_symbol sym; // old tori
170 ir_type *tp; /**< the source type, for analyses. default: type_unknown. */
173 /** Sel attributes. */
175 ir_entity *ent; /**< entity to select */
178 /** Exception attributes. */
180 op_pin_state pin_state; /**< the pin state for operations that might generate a exception:
181 If it's know that no exception will be generated, could be set to
182 op_pin_state_floats. */
183 #if PRECISE_EXC_CONTEXT
184 struct ir_node **frag_arr; /**< For Phi node construction in case of exception */
188 /** Call attributes. */
190 except_attr exc; /**< the exception attribute. MUST be the first one. */
191 ir_type *cld_tp; /**< type of called procedure */
192 ir_entity ** callee_arr; /**< result of callee analysis */
195 /** Alloc attributes. */
197 except_attr exc; /**< the exception attribute. MUST be the first one. */
198 ir_where_alloc where; /**< stack, heap or other managed part of memory */
199 ir_type *type; /**< Type of the allocated object. */
202 /** Free attributes. */
204 ir_type *type; /**< Type of the allocated object. */
205 ir_where_alloc where; /**< stack, heap or other managed part of memory */
208 /** InstOf attributes. */
210 except_attr exc; /**< the exception attribute. MUST be the first one. */
211 ir_type *type; /**< the type of which the object pointer must be */
214 /** Filter attributes. */
216 long proj; /**< contains the result position to project (Proj) */
217 ir_node **in_cg; /**< array with interprocedural predecessors (Phi) */
218 unsigned *backedge; /**< Raw Bitfield n set to true if pred n is backedge. */
221 /** CallBegin attributes. */
223 ir_node *call; /**< Associated Call-operation. */
226 /** Cast attributes. */
228 ir_type *totype; /**< Type of the casted node. */
231 /** Load attributes. */
233 except_attr exc; /**< The exception attribute. MUST be the first one. */
234 unsigned volatility:1; /**< The volatility of this Load operation. */
235 unsigned aligned:1; /**< The align attribute of this Load operation. */
236 ir_mode *load_mode; /**< The mode of this Load operation. */
239 /** Store attributes. */
241 except_attr exc; /**< the exception attribute. MUST be the first one. */
242 unsigned volatility:1; /**< The volatility of this Store operation. */
243 unsigned aligned:1; /**< The align attribute of this Store operation. */
247 ir_node *next; /**< Points to the next Phi in the Phi list of a block. */
249 unsigned *backedge; /**< Raw Bitfield: bit n is set to true if pred n is backedge. */
250 int pos; /**< For Phi0. Used to remember the value defined by
251 this Phi node. Needed when the Phi is completed
252 to call get_r_internal_value() to find the
253 predecessors. If this attribute is set, the Phi
254 node takes the role of the obsolete Phi0 node,
255 therefore the name. */
260 /**< Confirm attribute. */
262 pn_Cmp cmp; /**< The compare operation. */
265 /** CopyB attribute. */
267 except_attr exc; /**< The exception attribute. MUST be the first one. */
268 ir_type *data_type; /**< Type of the copied entity. */
271 /** Bound attribute. */
273 except_attr exc; /**< The exception attribute. MUST be the first one. */
276 /** Conv attribute. */
278 char strict; /**< If set, this is a strict Conv that cannot be removed. */
281 /** Div/Mod/DivMod/Quot attribute. */
283 except_attr exc; /**< The exception attribute. MUST be the first one. */
284 ir_mode *res_mode; /**< Result mode for the division. */
285 char no_remainder; /**< Set, if known that a division can be done without a remainder. */
288 /** Inline Assembler support attribute. */
290 /* BEWARE: pin state MUST be the first attribute */
291 op_pin_state pin_state; /**< the pin state for operations that might generate a exception */
292 ident *asm_text; /**< The inline assembler text. */
293 ir_asm_constraint *inputs; /**< Input constraints. */
294 ir_asm_constraint *outputs; /**< Output constraints. */
295 ident **clobber; /**< List of clobbered registers. */
298 /** Some IR-nodes just have one attribute, these are stored here,
299 some have more. Their name is 'irnodename_attr' */
301 block_attr block; /**< For Block: Fields needed to construct it */
302 cond_attr cond; /**< For Cond. */
303 const_attr con; /**< For Const: contains the value of the constant and a type */
304 symconst_attr symc; /**< For SymConst. */
305 sel_attr sel; /**< For Sel. */
306 call_attr call; /**< For Call: pointer to the type of the method to call */
307 callbegin_attr callbegin; /**< For CallBegin. */
308 alloc_attr alloc; /**< For Alloc. */
309 free_attr free; /**< For Free. */
310 io_attr instof; /**< For InstOf */
311 cast_attr cast; /**< For Cast. */
312 load_attr load; /**< For Load. */
313 store_attr store; /**< For Store. */
314 phi_attr phi; /**< For Phi. */
315 long proj; /**< For Proj: contains the result position to project */
316 confirm_attr confirm; /**< For Confirm: compare operation and region. */
317 filter_attr filter; /**< For Filter */
318 except_attr except; /**< For Phi node construction in case of exceptions */
319 copyb_attr copyb; /**< For CopyB operation */
320 bound_attr bound; /**< For Bound operation */
321 conv_attr conv; /**< For Conv operation */
322 divmod_attr divmod; /**< For Div/Mod/DivMod operation */
323 asm_attr assem; /**< For ASM operation. */
327 * Edge info to put into an irn.
329 typedef struct _irn_edge_kind_info_t {
330 struct list_head outs_head; /**< The list of all outs. */
331 int out_count; /**< Number of outs in the list. */
334 typedef irn_edge_info_t irn_edges_info_t[EDGE_KIND_LAST];
339 typedef struct _ir_def_use_edge {
340 ir_node *use; /** The use node of that edge. */
341 int pos; /** The position of this edge in use's input array. */
345 * The common structure of an irnode.
346 * If the node has some attributes, they are stored in the attr field.
349 /* ------- Basics of the representation ------- */
350 firm_kind kind; /**< Distinguishes this node from others. */
351 unsigned node_idx; /**< The node index of this node in its graph. */
352 ir_op *op; /**< The Opcode of this node. */
353 ir_mode *mode; /**< The Mode of this node. */
354 struct ir_node **in; /**< The array of predecessors / operands. */
355 unsigned long visited; /**< The visited counter for walks of the graph. */
356 void *link; /**< To attach additional information to the node, e.g.
357 used while construction to link Phi0 nodes and
358 during optimization to link to nodes that
359 shall replace a node. */
360 /* ------- Fields for optimizations / analysis information ------- */
361 ir_def_use_edge *out; /**< array of def-use edges. */
362 struct dbg_info *dbi; /**< A pointer to information for debug support. */
363 /* ------- For debugging ------- */
365 unsigned out_valid : 1;
367 long node_nr; /**< A unique node number for each node to make output
370 /* ------- For analyses -------- */
371 ir_loop *loop; /**< the loop the node is in. Access routines in irloop.h */
372 #ifdef DO_HEAPANALYSIS
373 struct abstval *av; /**< Heapanalysis: The abstract value of this node. */
374 struct section *sec; /**< Heapanalysis: The section of this node. */
376 struct ir_node **deps; /**< Additional dependencies induced by state. */
377 irn_edges_info_t edge_info; /**< Everlasting out edges. */
378 /* ------- Opcode depending fields -------- */
379 attr attr; /**< The set of attributes of this node. Depends on opcode.
380 Must be last field of struct ir_node. */
383 #include "iredgeset.h"
386 * Edge info to put into an irg.
388 typedef struct _irg_edge_info_t {
390 struct obstack edges_obst;
391 unsigned allocated : 1;
392 unsigned activated : 1; /**< set if edges are activated for the graph. */
395 typedef irg_edge_info_t irg_edges_info_t[EDGE_KIND_LAST];
398 * Index constants for nodes that can be accessed through the graph anchor node.
401 anchor_end_block = 0, /**< block the end node will belong to, same as Anchors block */
402 anchor_start_block, /**< block the start node will belong to */
403 anchor_end, /**< end node of this ir_graph */
404 anchor_start, /**< start node of this ir_graph */
405 anchor_end_reg, /**< end node of this ir_graph */
406 anchor_end_except, /**< end node of this ir_graph */
407 anchor_initial_exec, /**< methods initial control flow */
408 anchor_frame, /**< methods frame */
409 anchor_tls, /**< pointer to the thread local storage containing all
410 thread local data. */
411 anchor_initial_mem, /**< initial memory of this graph */
412 anchor_args, /**< methods arguments */
413 anchor_value_param_base, /**< method value param base */
414 anchor_bad, /**< bad node of this ir_graph, the one and
415 only in this graph */
416 anchor_no_mem, /**< NoMem node of this ir_graph, the one and only in this graph */
420 /** A callgraph entry for callees. */
421 typedef struct cg_callee_entry {
422 ir_graph *irg; /**< The called irg. */
423 ir_node **call_list; /**< The list of all calls to the irg. */
424 int max_depth; /**< Maximum depth of all Call nodes to irg. */
428 * An ir_graph holds all information for a procedure.
431 firm_kind kind; /**< Always set to k_ir_graph. */
432 /* -- Basics of the representation -- */
433 unsigned last_node_idx; /**< The last IR node index for this graph. */
434 ir_entity *ent; /**< The entity of this procedure, i.e.,
435 the type of the procedure and the
436 class it belongs to. */
437 ir_type *frame_type; /**< A class type representing the stack frame.
438 Can include "inner" methods. */
439 ir_node *anchor; /**< Pointer to the anchor node of this graph. */
440 struct obstack *obst; /**< The obstack where all of the ir_nodes live. */
441 ir_node *current_block; /**< Current block for newly gen_*()-erated ir_nodes. */
442 struct obstack *extbb_obst; /**< The obstack for extended basic block info. */
444 /* -- Fields for graph properties -- */
445 irg_inline_property inline_property; /**< How to handle inlineing. */
446 unsigned additional_properties; /**< Additional graph properties. */
448 /* -- Fields indicating different states of irgraph -- */
449 irg_phase_state phase_state; /**< Compiler phase. */
450 op_pin_state irg_pinned_state; /**< Flag for status of nodes. */
451 irg_outs_state outs_state; /**< Out edges. */
452 irg_dom_state dom_state; /**< Dominator state information. */
453 irg_dom_state pdom_state; /**< Post Dominator state information. */
454 ir_typeinfo_state typeinfo_state; /**< Validity of type information. */
455 irg_callee_info_state callee_info_state; /**< Validity of callee information. */
456 irg_loopinfo_state loopinfo_state; /**< State of loop information. */
457 ir_class_cast_state class_cast_state; /**< Kind of cast operations in code. */
458 irg_extblk_info_state extblk_state; /**< State of extended basic block info. */
459 exec_freq_state execfreq_state; /**< Execution frequency state. */
460 ir_address_taken_computed_state adr_taken_state; /**< Address taken state. */
461 unsigned mem_disambig_opt; /**< Options for the memory disambiguator. */
462 unsigned fp_model; /**< floating point model of the graph. */
464 /* -- Fields for construction -- */
465 #if USE_EXPLICIT_PHI_IN_STACK
466 struct Phi_in_stack *Phi_in_stack; /**< Needed for automatic Phi construction. */
468 int n_loc; /**< Number of local variables in this
469 procedure including procedure parameters. */
470 void **loc_descriptions; /**< Storage for local variable descriptions. */
472 /* -- Fields for optimizations / analysis information -- */
473 pset *value_table; /**< Hash table for global value numbering (cse)
474 for optimizing use in iropt.c */
475 ir_def_use_edge *outs; /**< Space for the Def-Use arrays. */
477 ir_loop *loop; /**< The outermost loop for this graph. */
478 void *link; /**< A void* field to link any information to
481 ir_graph **callers; /**< For callgraph analysis: list of caller graphs. */
482 unsigned *caller_isbe; /**< For callgraph analysis: raw bitset if backedge info calculated. */
483 cg_callee_entry **callees; /**< For callgraph analysis: list of callee calls */
484 unsigned *callee_isbe; /**< For callgraph analysis: raw bitset if backedge info calculated. */
485 int callgraph_loop_depth; /**< For callgraph analysis */
486 int callgraph_recursion_depth; /**< For callgraph analysis */
487 double method_execution_frequency; /**< For callgraph analysis */
489 ir_loop *l; /**< For callgraph analysis. */
491 /* -- Fields for Walking the graph -- */
492 unsigned long visited; /**< this flag is an identifier for
493 ir walk. it will be incremented
494 every time someone walks through
496 unsigned long block_visited; /**< same as visited, for a complete block */
498 unsigned estimated_node_count; /**< estimated number of nodes in this graph,
499 updated after every walk */
500 irg_edges_info_t edge_info; /**< edge info for automatic outs */
501 ir_node **idx_irn_map; /**< Array mapping node indexes to nodes. */
503 int index; /**< a unique number for each graph */
504 ir_phase *phases[PHASE_LAST]; /**< Phase information. */
506 int n_outs; /**< Size wasted for outs */
507 long graph_nr; /**< a unique graph number for each
508 graph to make output readable. */
512 unsigned using_irn_visited : 1; /**< set to 1 if we are currently using the visited flag */
513 unsigned using_block_visited : 1; /**< set to 1 if we are currently using the block_visited flag */
514 unsigned using_irn_link : 1; /**< set to 1 if we are currently using the irn_link fields */
515 unsigned using_block_mark : 1; /**< set to 1 if we are currently using the block mark flags */
521 firm_kind kind; /**< must be k_ir_prog */
522 ident *name; /**< A file name or the like. */
523 ir_graph *main_irg; /**< The entry point to the compiled program
524 or NULL if no point exists. */
525 ir_graph **graphs; /**< A list of all graphs in the ir. */
526 ir_graph **pseudo_graphs; /**< A list of all pseudo graphs in the ir. See pseudo_irg.c */
527 ir_graph *const_code_irg; /**< This ir graph gives the proper environment
528 to allocate nodes the represent values
529 of constant entities. It is not meant as
531 ir_type *glob_type; /**< The global type. Must be a class as it can
532 have fields and procedures. */
533 ir_type *tls_type; /**< The thread local storage type. Must be a struct as it can
535 ir_type *constructors_type; /**< contains links to module constructor
536 functions. Must be a struct */
537 ir_type **types; /**< A list of all types in the ir. */
538 ir_mode **modes; /**< A list of all modes in the ir. */
539 ir_op **opcodes; /**< A list of all opcodes in the ir. */
541 /* -- states of and access to generated information -- */
542 irg_phase_state phase_state; /**< The state of construction. */
544 ip_view_state ip_view; /**< The state of interprocedural view. */
546 irg_outs_state outs_state; /**< The state of out edges of ir nodes. */
547 ir_node **ip_outedges; /**< A huge Array that contains all out edges
548 in interprocedural view. */
549 irg_outs_state trouts_state; /**< The state of out edges of type information. */
551 irg_callee_info_state callee_info_state; /**< Validity of callee information.
552 Contains the lowest value or all irgs. */
553 ir_typeinfo_state typeinfo_state; /**< Validity of type information. */
554 inh_transitive_closure_state inh_trans_closure_state; /**< State of transitive closure
555 of inheritance relations. */
557 irp_callgraph_state callgraph_state; /**< The state of the callgraph. */
558 ir_loop *outermost_cg_loop; /**< For callgraph analysis: entry point
559 to looptree over callgraph. */
560 int max_callgraph_loop_depth; /**< needed in callgraph. */
561 int max_callgraph_recursion_depth; /**< needed in callgraph. */
562 double max_method_execution_frequency; /**< needed in callgraph. */
563 irp_temperature_state temperature_state; /**< accumulated temperatures computed? */
564 exec_freq_state execfreq_state; /**< The state of execution frequency information */
565 loop_nesting_depth_state lnd_state; /**< The state of loop nesting depth information. */
566 ir_class_cast_state class_cast_state; /**< The state of cast operations in code. */
567 ir_address_taken_computed_state globals_adr_taken_state; /**< Address taken state of the globals. */
569 ir_exc_region_t last_region_nr; /**< The last exception region number that was assigned. */
570 ir_label_t last_label_nr; /**< The highest label number for generating unique labels. */
571 int max_irg_idx; /**< highest unused irg index */
573 long max_node_nr; /**< to generate unique numbers for nodes. */