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"
34 #include "iredgekinds.h"
35 #include "irtypeinfo.h"
37 #include "execution_frequency.h"
39 #include "callgraph.h"
41 #include "field_temperature.h"
42 #include "irphases_t.h"
51 /** The type of an ir_op. */
53 unsigned code; /**< The unique opcode of the op. */
54 ident *name; /**< The name of the op. */
55 size_t attr_size; /**< Space needed in memory for private attributes. */
56 op_pin_state pin_state; /**< How to deal with the node in CSE, PRE. */
57 op_arity opar; /**< The arity of operator. */
58 int op_index; /**< The index of the first data operand, 0 for most cases, 1 for Div etc. */
59 unsigned flags; /**< Flags describing the behavior of the ir_op, a bitmasks of irop_flags. */
60 unsigned tag; /**< Some custom TAG value the op's creator set to. */
61 void *attr; /**< custom pointer where op's creator can attach attribute stuff to. */
63 ir_op_ops ops; /**< The operations of the this op. */
67 * Contains relevant information about a mode.
69 * Necessary information about a mode is stored in this struct
70 * which is used by the tarval module to perform calculations
71 * and comparisons of values of a such described 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 ident *name; /**< Name ident of this mode */
90 /* ----------------------------------------------------------------------- */
91 /* On changing this struct you have to evaluate the mode_are_equal function!*/
92 ir_mode_sort sort; /**< coarse classification of this mode:
93 int, float, reference ...
96 arithmetic; /**< different arithmetic operations possible with a mode */
97 unsigned size; /**< size of the mode in Bits. */
98 unsigned sign:1; /**< signedness of this mode */
99 unsigned int modulo_shift; /**< number of bits a values of this mode will be shifted */
100 unsigned vector_elem; /**< if this is not equal 1, this is a vector mode with
101 vector_elem number of elements, size contains the size
102 of all bits and must be dividable by vector_elem */
104 /* ----------------------------------------------------------------------- */
105 tarval *min; /**< the minimum value that can be expressed */
106 tarval *max; /**< the maximum value that can be expressed */
107 tarval *null; /**< the value 0 */
108 tarval *one; /**< the value 1 */
109 tarval *minus_one; /**< the value -1 */
110 tarval *all_one; /**< the value ~0 */
111 ir_mode *eq_signed; /**< For pointer modes, the equivalent signed integer one. */
112 ir_mode *eq_unsigned; /**< For pointer modes, the equivalent unsigned integer one. */
113 void *link; /**< To store some intermediate information */
114 const void *tv_priv; /**< tarval module will save private data here */
117 /* ir node attributes */
119 /** first attribute of Bad and Block nodes */
121 ir_graph *irg; /**< The graph this block like node belongs to. */
124 /** Block attributes */
126 /* General attributes */
127 irg_attr irg; /**< The graph this block belongs to. */
128 ir_visited_t block_visited; /**< For the walker that walks over all blocks. */
129 /* Attributes private to construction: */
130 unsigned is_matured:1; /**< If set, all in-nodes of the block are fixed. */
131 unsigned is_dead:1; /**< If set, the block is dead (and could be replace by a Bad. */
132 unsigned is_mb_head:1; /**< Set if this block is a macroblock head. */
133 unsigned marked:1; /**< Can be set/unset to temporary mark a block. */
134 ir_node **graph_arr; /**< An array to store all parameters. */
135 /* Attributes holding analyses information */
136 ir_dom_info dom; /**< Datastructure that holds information about dominators.
138 Eventually overlay with graph_arr as only valid
139 in different phases. Eventually inline the whole
141 ir_dom_info pdom; /**< Datastructure that holds information about post-dominators. */
142 ir_node ** in_cg; /**< array with predecessors in
143 * interprocedural_view, if they differ
144 * from intraprocedural predecessors */
145 unsigned *backedge; /**< Raw Bitfield n set to true if pred n is backedge.*/
146 unsigned *cg_backedge; /**< Raw Bitfield n set to true if pred n is interprocedural backedge. */
147 ir_extblk *extblk; /**< The extended basic block this block belongs to. */
148 ir_region *region; /**< The immediate structural region this block belongs to. */
149 unsigned mb_depth; /**< The macroblock depth: A distance from the macroblock header */
150 ir_entity *entity; /**< entitiy representing this block */
151 ir_node *phis; /**< The list of Phi nodes in this block. */
153 struct list_head succ_head; /**< A list head for all successor edges of a block. */
156 /** Cond attributes. */
158 cond_kind kind; /**< flavor of Cond */
159 long default_proj; /**< only for non-binary Conds: biggest Proj number, i.e. the one used for default. */
160 cond_jmp_predicate jmp_pred; /**< only for binary Conds: The jump predication. */
163 /** Const attributes. */
165 tarval *tv; /**< the target value */
166 ir_type *tp; /**< the source type, for analyses. default: type_unknown. */
169 /** SymConst attributes. */
171 symconst_symbol sym; // old tori
173 ir_type *tp; /**< the source type, for analyses. default: type_unknown. */
176 /** Sel attributes. */
178 ir_entity *entity; /**< entity to select */
181 /** Exception attributes. */
183 op_pin_state pin_state; /**< the pin state for operations that might generate a exception:
184 If it's know that no exception will be generated, could be set to
185 op_pin_state_floats. */
186 struct ir_node **frag_arr; /**< For Phi node construction in case of exception */
189 /** Call attributes. */
191 except_attr exc; /**< the exception attribute. MUST be the first one. */
192 ir_type *type; /**< type of called procedure */
193 ir_entity **callee_arr; /**< result of callee analysis */
194 unsigned tail_call:1; /**< if set, can be a tail call */
197 /** Builtin attributes. */
199 except_attr exc; /**< the exception attribute. MUST be the first one. */
200 ir_builtin_kind kind; /**< kind of the called builtin procedure */
201 ir_type *type; /**< type of called builtin procedure */
204 /** Alloc attributes. */
206 except_attr exc; /**< the exception attribute. MUST be the first one. */
207 ir_where_alloc where; /**< stack, heap or other managed part of memory */
208 ir_type *type; /**< Type of the allocated object. */
211 /** Free attributes. */
213 ir_type *type; /**< Type of the allocated object. */
214 ir_where_alloc where; /**< stack, heap or other managed part of memory */
217 /** InstOf attributes. */
219 except_attr exc; /**< the exception attribute. MUST be the first one. */
220 ir_type *type; /**< the type of which the object pointer must be */
223 /** Filter attributes. */
225 long proj; /**< contains the result position to project (Proj) */
226 ir_node **in_cg; /**< array with interprocedural predecessors (Phi) */
227 unsigned *backedge; /**< Raw Bitfield n set to true if pred n is backedge. */
230 /** CallBegin attributes. */
232 ir_node *call; /**< Associated Call-operation. */
235 /** Cast attributes. */
237 ir_type *type; /**< Type of the casted node. */
240 /** Load attributes. */
242 except_attr exc; /**< The exception attribute. MUST be the first one. */
243 unsigned volatility:1; /**< The volatility of this Load operation. */
244 unsigned aligned:1; /**< The align attribute of this Load operation. */
245 ir_mode *mode; /**< The mode of this Load operation. */
248 /** Store attributes. */
250 except_attr exc; /**< the exception attribute. MUST be the first one. */
251 unsigned volatility:1; /**< The volatility of this Store operation. */
252 unsigned aligned:1; /**< The align attribute of this Store operation. */
256 ir_node *next; /**< Points to the next Phi in the Phi list of a block. */
258 unsigned *backedge; /**< Raw Bitfield: bit n is set to true if pred n is backedge. */
259 int pos; /**< For Phi0. Used to remember the value defined by
260 this Phi node. Needed when the Phi is completed
261 to call get_r_internal_value() to find the
262 predecessors. If this attribute is set, the Phi
263 node takes the role of the obsolete Phi0 node,
264 therefore the name. */
269 /**< Confirm attribute. */
271 pn_Cmp cmp; /**< The compare operation. */
274 /** CopyB attribute. */
276 except_attr exc; /**< The exception attribute. MUST be the first one. */
277 ir_type *type; /**< Type of the copied entity. */
280 /** Bound attribute. */
282 except_attr exc; /**< The exception attribute. MUST be the first one. */
285 /** Conv attribute. */
287 char strict; /**< If set, this is a strict Conv that cannot be removed. */
290 /** Div/Mod/DivMod/Quot attribute. */
292 except_attr exc; /**< The exception attribute. MUST be the first one. */
293 ir_mode *resmode; /**< Result mode for the division. */
294 char no_remainder; /**< Set, if known that a division can be done without a remainder. */
297 /** Inline Assembler support attribute. */
299 /* BEWARE: pin state MUST be the first attribute */
300 op_pin_state pin_state; /**< the pin state for operations that might generate a exception */
301 ident *asm_text; /**< The inline assembler text. */
302 ir_asm_constraint *inputs; /**< Input constraints. */
303 ir_asm_constraint *outputs; /**< Output constraints. */
304 ident **clobber; /**< List of clobbered registers. */
307 /** Some IR-nodes just have one attribute, these are stored here,
308 some have more. Their name is 'irnodename_attr' */
310 irg_attr irg; /**< For Blocks and Bad: its belonging irg */
311 block_attr block; /**< For Block: Fields needed to construct it */
312 cond_attr cond; /**< For Cond. */
313 const_attr con; /**< For Const: contains the value of the constant and a type */
314 symconst_attr symc; /**< For SymConst. */
315 sel_attr sel; /**< For Sel. */
316 call_attr call; /**< For Call. */
317 builtin_attr builtin; /**< For Builtin. */
318 callbegin_attr callbegin; /**< For CallBegin. */
319 alloc_attr alloc; /**< For Alloc. */
320 free_attr free; /**< For Free. */
321 io_attr instof; /**< For InstOf */
322 cast_attr cast; /**< For Cast. */
323 load_attr load; /**< For Load. */
324 store_attr store; /**< For Store. */
325 phi_attr phi; /**< For Phi. */
326 long proj; /**< For Proj: contains the result position to project */
327 confirm_attr confirm; /**< For Confirm: compare operation and region. */
328 filter_attr filter; /**< For Filter */
329 except_attr except; /**< For Phi node construction in case of exceptions */
330 copyb_attr copyb; /**< For CopyB operation */
331 bound_attr bound; /**< For Bound operation */
332 conv_attr conv; /**< For Conv operation */
333 divmod_attr divmod; /**< For Div/Mod/DivMod operation */
334 asm_attr assem; /**< For ASM operation. */
338 * Edge info to put into an irn.
340 typedef struct _irn_edge_kind_info_t {
341 struct list_head outs_head; /**< The list of all outs. */
342 int out_count; /**< Number of outs in the list. */
345 typedef irn_edge_info_t irn_edges_info_t[EDGE_KIND_LAST];
350 typedef struct _ir_def_use_edge {
351 ir_node *use; /** The use node of that edge. */
352 int pos; /** The position of this edge in use's input array. */
356 * The common structure of an irnode.
357 * If the node has some attributes, they are stored in the attr field.
360 /* ------- Basics of the representation ------- */
361 firm_kind kind; /**< Distinguishes this node from others. */
362 unsigned node_idx; /**< The node index of this node in its graph. */
363 ir_op *op; /**< The Opcode of this node. */
364 ir_mode *mode; /**< The Mode of this node. */
365 struct ir_node **in; /**< The array of predecessors / operands. */
366 ir_visited_t visited; /**< The visited counter for walks of the graph. */
367 void *link; /**< To attach additional information to the node, e.g.
368 used during optimization to link to nodes that
369 shall replace a node. */
370 long node_nr; /**< A globally unique node number for each node. */
371 /* ------- Fields for optimizations / analysis information ------- */
372 ir_def_use_edge *out; /**< array of def-use edges. */
373 struct dbg_info *dbi; /**< A pointer to information for debug support. */
374 /* ------- For debugging ------- */
376 unsigned out_valid : 1;
379 /* ------- For analyses -------- */
380 ir_loop *loop; /**< the loop the node is in. Access routines in irloop.h */
381 struct ir_node **deps; /**< Additional dependencies induced by state. */
383 irn_edges_info_t edge_info; /**< Everlasting out edges. */
384 /* ------- Opcode depending fields -------- */
385 attr attr; /**< The set of attributes of this node. Depends on opcode.
386 Must be last field of struct ir_node. */
389 #include "iredgeset.h"
392 * Edge info to put into an irg.
394 typedef struct _irg_edge_info_t {
395 ir_edgeset_t edges; /**< A set containing all edges of the current graph. */
396 struct list_head free_edges; /**< list of all free edges. */
397 struct obstack edges_obst; /**< Obstack, where edges are allocated on. */
398 unsigned allocated : 1; /**< Set if edges are allocated on the obstack. */
399 unsigned activated : 1; /**< Set if edges are activated for the graph. */
402 typedef irg_edge_info_t irg_edges_info_t[EDGE_KIND_LAST];
405 * Index constants for nodes that can be accessed through the graph anchor node.
408 anchor_end_block = 0, /**< block the end node will belong to, same as Anchors block */
409 anchor_start_block, /**< block the start node will belong to */
410 anchor_end, /**< end node of this ir_graph */
411 anchor_start, /**< start node of this ir_graph */
412 anchor_end_reg, /**< end node of this ir_graph */
413 anchor_end_except, /**< end node of this ir_graph */
414 anchor_initial_exec, /**< methods initial control flow */
415 anchor_frame, /**< methods frame */
416 anchor_tls, /**< pointer to the thread local storage containing all
417 thread local data. */
418 anchor_initial_mem, /**< initial memory of this graph */
419 anchor_args, /**< methods arguments */
420 anchor_bad, /**< bad node of this ir_graph, the one and
421 only in this graph */
422 anchor_no_mem, /**< NoMem node of this ir_graph, the one and only in this graph */
426 /** A callgraph entry for callees. */
427 typedef struct cg_callee_entry {
428 ir_graph *irg; /**< The called irg. */
429 ir_node **call_list; /**< The list of all calls to the irg. */
430 int max_depth; /**< Maximum depth of all Call nodes to irg. */
434 * An ir_graph holds all information for a procedure.
437 firm_kind kind; /**< Always set to k_ir_graph. */
438 /* -- Basics of the representation -- */
439 unsigned last_node_idx; /**< The last IR node index for this graph. */
440 ir_entity *ent; /**< The entity of this procedure, i.e.,
441 the type of the procedure and the
442 class it belongs to. */
443 ir_type *frame_type; /**< A class type representing the stack frame.
444 Can include "inner" methods. */
445 ir_node *anchor; /**< Pointer to the anchor node of this graph. */
446 struct obstack *obst; /**< The obstack where all of the ir_nodes live. */
447 ir_node *current_block; /**< Current block for newly gen_*()-erated ir_nodes. */
448 struct obstack *extbb_obst; /**< The obstack for extended basic block info. */
450 /* -- Fields for graph properties -- */
451 irg_inline_property inline_property; /**< How to handle inlineing. */
452 unsigned additional_properties; /**< Additional graph properties. */
454 /* -- Fields indicating different states of irgraph -- */
456 irg_phase_state phase_state; /**< Compiler phase. */
457 op_pin_state irg_pinned_state; /**< Flag for status of nodes. */
458 irg_outs_state outs_state; /**< Out edges. */
459 irg_dom_state dom_state; /**< Dominator state information. */
460 irg_dom_state pdom_state; /**< Post Dominator state information. */
461 ir_typeinfo_state typeinfo_state; /**< Validity of type information. */
462 irg_callee_info_state callee_info_state; /**< Validity of callee information. */
463 irg_loopinfo_state loopinfo_state; /**< State of loop information. */
464 ir_class_cast_state class_cast_state; /**< Kind of cast operations in code. */
465 irg_extblk_info_state extblk_state; /**< State of extended basic block info. */
466 exec_freq_state execfreq_state; /**< Execution frequency state. */
467 ir_entity_usage_computed_state entity_usage_state;
468 unsigned mem_disambig_opt; /**< Options for the memory disambiguator. */
469 unsigned fp_model; /**< floating point model of the graph. */
471 /* -- Fields for construction -- */
472 int n_loc; /**< Number of local variables in this
473 procedure including procedure parameters. */
474 void **loc_descriptions; /**< Storage for local variable descriptions. */
476 /* -- Fields for optimizations / analysis information -- */
477 pset *value_table; /**< Hash table for global value numbering (cse)
478 for optimizing use in iropt.c */
479 ir_def_use_edge *outs; /**< Space for the Def-Use arrays. */
481 ir_loop *loop; /**< The outermost loop for this graph. */
482 void *link; /**< A void* field to link any information to
485 ir_graph **callers; /**< For callgraph analysis: list of caller graphs. */
486 unsigned *caller_isbe; /**< For callgraph analysis: raw bitset if backedge info calculated. */
487 cg_callee_entry **callees; /**< For callgraph analysis: list of callee calls */
488 unsigned *callee_isbe; /**< For callgraph analysis: raw bitset if backedge info calculated. */
489 ir_loop *l; /**< For callgraph analysis. */
490 int callgraph_loop_depth; /**< For callgraph analysis */
491 int callgraph_recursion_depth; /**< For callgraph analysis */
492 double method_execution_frequency; /**< For callgraph analysis */
495 /* -- Fields for Walking the graph -- */
496 ir_visited_t visited; /**< this flag is an identifier for
497 ir walk. it will be incremented
498 every time someone walks through
500 ir_visited_t block_visited; /**< same as visited, for a complete block */
502 ir_visited_t self_visited; /**< visited flag of the irg */
504 unsigned estimated_node_count; /**< estimated number of nodes in this graph,
505 updated after every walk */
506 irg_edges_info_t edge_info; /**< edge info for automatic outs */
507 ir_node **idx_irn_map; /**< Array mapping node indexes to nodes. */
509 int index; /**< a unique number for each graph */
510 ir_phase *phases[PHASE_LAST]; /**< Phase information. */
511 void *be_data; /**< backend can put in private data here */
513 int n_outs; /**< Size wasted for outs */
514 long graph_nr; /**< a unique graph number for each
515 graph to make output readable. */
519 ir_resources_t reserved_resources; /**< Bitset for tracking used local resources. */
524 * Data structure that holds central information about a program
526 * One irp is created by libFirm on construction, so irp should never be NULL.
528 * - main_irg: The ir graph that is the entry point to the program.
529 * (Anything not reachable from here may be optimized away
530 * if this irp represents a whole program.
531 * - irg: List of all ir graphs in the program or module.
532 * - type: A list containing all types known to the translated program.
533 * Some types can have several entries in this list (as a result of
534 * using exchange_types()).
535 * - glob_type: The unique global type that is owner of all global entities
539 firm_kind kind; /**< must be k_ir_prog */
540 ident *name; /**< A file name or the like. */
541 ir_graph *main_irg; /**< The entry point to the compiled program
542 or NULL if no point exists. */
543 ir_graph **graphs; /**< A list of all graphs in the ir. */
544 ir_graph **pseudo_graphs; /**< A list of all pseudo graphs in the ir. See pseudo_irg.c */
545 ir_graph *const_code_irg; /**< This ir graph gives the proper environment
546 to allocate nodes the represent values
547 of constant entities. It is not meant as
549 ir_type *segment_types[IR_SEGMENT_COUNT];
550 ir_type **types; /**< A list of all types in the ir. */
551 ir_mode **modes; /**< A list of all modes in the ir. */
552 ir_op **opcodes; /**< A list of all opcodes in the ir. */
553 ident **global_asms; /**< An array of global ASM insertions. */
555 /* -- states of and access to generated information -- */
556 irg_phase_state phase_state; /**< The state of construction. */
558 ip_view_state ip_view; /**< The state of interprocedural view. */
560 irg_outs_state outs_state; /**< The state of out edges of ir nodes. */
561 ir_node **ip_outedges; /**< A huge Array that contains all out edges
562 in interprocedural view. */
563 irg_outs_state trouts_state; /**< The state of out edges of type information. */
565 irg_callee_info_state callee_info_state; /**< Validity of callee information.
566 Contains the lowest value or all irgs. */
567 ir_typeinfo_state typeinfo_state; /**< Validity of type information. */
568 inh_transitive_closure_state inh_trans_closure_state; /**< State of transitive closure
569 of inheritance relations. */
571 irp_callgraph_state callgraph_state; /**< The state of the callgraph. */
572 ir_loop *outermost_cg_loop; /**< For callgraph analysis: entry point
573 to looptree over callgraph. */
574 int max_callgraph_loop_depth; /**< needed in callgraph. */
575 int max_callgraph_recursion_depth; /**< needed in callgraph. */
576 double max_method_execution_frequency; /**< needed in callgraph. */
577 irp_temperature_state temperature_state; /**< accumulated temperatures computed? */
578 exec_freq_state execfreq_state; /**< The state of execution frequency information */
579 loop_nesting_depth_state lnd_state; /**< The state of loop nesting depth information. */
580 ir_class_cast_state class_cast_state; /**< The state of cast operations in code. */
581 ir_entity_usage_computed_state globals_entity_usage_state;
583 ir_exc_region_t last_region_nr; /**< The last exception region number that was assigned. */
584 ir_label_t last_label_nr; /**< The highest label number for generating unique labels. */
585 int max_irg_idx; /**< highest unused irg index */
586 long max_node_nr; /**< to generate unique numbers for nodes. */
588 ir_resources_t reserved_resources; /**< Bitset for tracking used global resources. */