irnode.c 38.3 KB
Newer Older
Christian Würdig's avatar
Christian Würdig committed
1
/*
Michael Beck's avatar
Michael Beck committed
2
 * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
Christian Würdig's avatar
Christian Würdig committed
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 *
 * This file is part of libFirm.
 *
 * This file may be distributed and/or modified under the terms of the
 * GNU General Public License version 2 as published by the Free Software
 * Foundation and appearing in the file LICENSE.GPL included in the
 * packaging of this file.
 *
 * Licensees holding valid libFirm Professional Edition licenses may use
 * this file in accordance with the libFirm Commercial License.
 * Agreement provided with the Software.
 *
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE.
 */

Matthias Braun's avatar
Matthias Braun committed
20
21
22
23
24
/**
 * @file
 * @brief   Representation of an intermediate operation.
 * @author  Martin Trapp, Christian Schaefer, Goetz Lindenmaier, Michael Beck
 * @version $Id$
Götz Lindenmaier's avatar
Götz Lindenmaier committed
25
 */
Matthias Braun's avatar
Matthias Braun committed
26
#include "config.h"
Michael Beck's avatar
Michael Beck committed
27

28
#include <string.h>
Boris Boesler's avatar
added    
Boris Boesler committed
29

30
#include "pset_new.h"
31
#include "ident.h"
Götz Lindenmaier's avatar
Götz Lindenmaier committed
32
#include "irnode_t.h"
Götz Lindenmaier's avatar
Götz Lindenmaier committed
33
#include "irgraph_t.h"
Götz Lindenmaier's avatar
Götz Lindenmaier committed
34
#include "irmode_t.h"
35
#include "irbackedge_t.h"
36
#include "irdump.h"
37
#include "irop_t.h"
38
#include "irprog_t.h"
Sebastian Hack's avatar
Sebastian Hack committed
39
#include "iredgekinds.h"
Sebastian Hack's avatar
Sebastian Hack committed
40
#include "iredges_t.h"
Matthias Braun's avatar
Matthias Braun committed
41
#include "ircons.h"
42
#include "error.h"
Götz Lindenmaier's avatar
Götz Lindenmaier committed
43

44
#include "irhooks.h"
45
#include "irtools.h"
46
#include "util.h"
Michael Beck's avatar
Michael Beck committed
47

48
49
#include "beinfo.h"

Götz Lindenmaier's avatar
Götz Lindenmaier committed
50
51
/* some constants fixing the positions of nodes predecessors
   in the in array */
Michael Beck's avatar
Michael Beck committed
52
#define CALL_PARAM_OFFSET     2
53
#define BUILDIN_PARAM_OFFSET  1
Michael Beck's avatar
Michael Beck committed
54
55
56
#define SEL_INDEX_OFFSET      2
#define RETURN_RESULT_OFFSET  1  /* mem is not a result */
#define END_KEEPALIVE_OFFSET  0
Götz Lindenmaier's avatar
Götz Lindenmaier committed
57

58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
static const char *relation_names [] = {
	"false",
	"equal",
	"less",
	"less_equal",
	"greater",
	"greater_equal",
	"less_greater",
	"less_equal_greater",
	"unordered",
	"unordered_equal",
	"unordered_less",
	"unordered_less_equal",
	"unordered_greater",
	"unordered_greater_equal",
	"not_equal",
	"true"
75
};
Christian Schäfer's avatar
Christian Schäfer committed
76

77
const char *get_relation_string(ir_relation relation)
78
{
79
80
	assert(relation < (ir_relation)ARRAY_SIZE(relation_names));
	return relation_names[relation];
Christian Schäfer's avatar
Christian Schäfer committed
81
82
}

83
ir_relation get_negated_relation(ir_relation relation)
84
{
85
	return relation ^ ir_relation_true;
Christian Schäfer's avatar
Christian Schäfer committed
86
87
}

88
ir_relation get_inversed_relation(ir_relation relation)
89
{
90
91
92
93
94
	ir_relation code    = relation & ~(ir_relation_less|ir_relation_greater);
	bool        less    = relation & ir_relation_less;
	bool        greater = relation & ir_relation_greater;
	code |= (less ? ir_relation_greater : 0) | (greater ? ir_relation_less : 0);
	return code;
Michael Beck's avatar
Michael Beck committed
95
96
}

97
98
99
100
101
102
103
104
105
106
/**
 * Indicates, whether additional data can be registered to ir nodes.
 * If set to 1, this is not possible anymore.
 */
static int forbid_new_data = 0;

/**
 * The amount of additional space for custom data to be allocated upon
 * creating a new node.
 */
107
unsigned firm_add_node_size = 0;
108
109


110
/* register new space for every node */
111
112
unsigned firm_register_additional_node_data(unsigned size)
{
113
	assert(!forbid_new_data && "Too late to register additional node data");
114

115
116
	if (forbid_new_data)
		return 0;
117

118
	return firm_add_node_size += size;
119
120
121
}


122
123
void init_irnode(void)
{
124
125
	/* Forbid the addition of new data to an ir node. */
	forbid_new_data = 1;
Christian Schäfer's avatar
Christian Schäfer committed
126
127
}

128
129
130
131
132
133
134
135
136
struct struct_align {
	char c;
	struct s {
		int i;
		float f;
		double d;
	} s;
};

137
/*
138
139
140
 * irnode constructor.
 * Create a new irnode in irg, with an op, mode, arity and
 * some incoming irnodes.
141
142
 * If arity is negative, a node with a dynamic array is created.
 */
143
ir_node *new_ir_node(dbg_info *db, ir_graph *irg, ir_node *block, ir_op *op,
144
                     ir_mode *mode, int arity, ir_node *const *in)
Christian Schäfer's avatar
Christian Schäfer committed
145
{
146
	ir_node *res;
147
148
149
	unsigned align = offsetof(struct struct_align, s) - 1;
	unsigned add_node_size = (firm_add_node_size + align) & ~align;
	size_t node_size = offsetof(ir_node, attr) + op->attr_size + add_node_size;
150
	char *p;
151
	int i;
152

Christoph Mallon's avatar
Christoph Mallon committed
153
154
155
	assert(irg);
	assert(op);
	assert(mode);
156
	p = (char*)obstack_alloc(irg->obst, node_size);
157
	memset(p, 0, node_size);
158
	res = (ir_node *)(p + add_node_size);
159
160
161
162
163
164
165
166
167
168

	res->kind     = k_ir_node;
	res->op       = op;
	res->mode     = mode;
	res->visited  = 0;
	res->node_idx = irg_register_node_idx(irg, res);
	res->link     = NULL;
	res->deps     = NULL;

	if (arity < 0) {
169
		res->in = NEW_ARR_F(ir_node *, 1);  /* 1: space for block */
170
	} else {
171
172
		/* not nice but necessary: End and Sync must always have a flexible array */
		if (op == op_End || op == op_Sync)
173
174
175
			res->in = NEW_ARR_F(ir_node *, (arity+1));
		else
			res->in = NEW_ARR_D(ir_node *, irg->obst, (arity+1));
176
		memcpy(&res->in[1], in, sizeof(ir_node *) * arity);
177
178
	}

179
	res->in[0]   = block;
180
	set_irn_dbg_info(res, db);
181
	res->out     = NULL;
182
	res->node_nr = get_irp_new_node_nr();
Götz Lindenmaier's avatar
Götz Lindenmaier committed
183

Michael Beck's avatar
Michael Beck committed
184
	for (i = 0; i < EDGE_KIND_LAST; ++i) {
185
		INIT_LIST_HEAD(&res->edge_info[i].outs_head);
Michael Beck's avatar
Michael Beck committed
186
187
188
189
		/* edges will be build immediately */
		res->edge_info[i].edges_built = 1;
		res->edge_info[i].out_count = 0;
	}
190

191
	/* don't put this into the for loop, arity is -1 for some nodes! */
192
193
	edges_notify_edge(res, -1, res->in[0], NULL, irg);
	for (i = 1; i <= arity; ++i)
194
		edges_notify_edge(res, i - 1, res->in[i], NULL, irg);
Sebastian Hack's avatar
Sebastian Hack committed
195

196
	hook_new_node(irg, res);
197
198
199
	if (get_irg_phase_state(irg) == phase_backend) {
		be_info_new_node(res);
	}
Michael Beck's avatar
Michael Beck committed
200

201
	return res;
Christian Schäfer's avatar
Christian Schäfer committed
202
203
}

Michael Beck's avatar
Michael Beck committed
204
/*-- getting some parameters from ir_nodes --*/
Christian Schäfer's avatar
Christian Schäfer committed
205

206
207
int (is_ir_node)(const void *thing)
{
208
	return _is_ir_node(thing);
Sebastian Felis's avatar
Sebastian Felis committed
209
210
}

211
212
int (get_irn_arity)(const ir_node *node)
{
213
	return _get_irn_arity(node);
214
215
}

216
217
218
219
220
221
/* Returns the array with ins. This array is shifted with respect to the
   array accessed by get_irn_n: The block operand is at position 0 not -1.
   (@@@ This should be changed.)
   The order of the predecessors in this array is not guaranteed, except that
   lists of operands as predecessors of Block or arguments of a Call are
   consecutive. */
222
223
ir_node **get_irn_in(const ir_node *node)
{
224
225
226
	return node->in;
}

227
228
void set_irn_in(ir_node *node, int arity, ir_node **in)
{
229
	int i;
Michael Beck's avatar
Michael Beck committed
230
	ir_node *** pOld_in;
231
	ir_graph *irg = get_irn_irg(node);
232

233
	pOld_in = &node->in;
234

235
236

	for (i = 0; i < arity; i++) {
237
		if (i < (int)ARR_LEN(*pOld_in)-1)
Michael Beck's avatar
Michael Beck committed
238
			edges_notify_edge(node, i, in[i], (*pOld_in)[i+1], irg);
239
		else
Michael Beck's avatar
Michael Beck committed
240
			edges_notify_edge(node, i, in[i], NULL,            irg);
241
	}
242
	for (;i < (int)ARR_LEN(*pOld_in)-1; i++) {
Michael Beck's avatar
Michael Beck committed
243
		edges_notify_edge(node, i, NULL, (*pOld_in)[i+1], irg);
244
245
	}

246
	if (arity != (int)ARR_LEN(*pOld_in) - 1) {
Michael Beck's avatar
Michael Beck committed
247
248
249
		ir_node * block = (*pOld_in)[0];
		*pOld_in = NEW_ARR_D(ir_node *, irg->obst, arity + 1);
		(*pOld_in)[0] = block;
250
251
252
	}
	fix_backedges(irg->obst, node);

Michael Beck's avatar
Michael Beck committed
253
	memcpy((*pOld_in) + 1, in, sizeof(ir_node *) * arity);
254
255
}

256
257
ir_node *(get_irn_n)(const ir_node *node, int n)
{
258
	return _get_irn_n(node, n);
Christian Schäfer's avatar
Christian Schäfer committed
259
260
}

261
262
void set_irn_n(ir_node *node, int n, ir_node *in)
{
263
	ir_graph *irg = get_irn_irg(node);
264
265
266
267
268
269
270
271
272
	assert(node && node->kind == k_ir_node);
	assert(-1 <= n);
	assert(n < get_irn_arity(node));
	assert(in && in->kind == k_ir_node);

	/* Call the hook */
	hook_set_irn_n(node, n, in, node->in[n + 1]);

	/* Here, we rely on src and tgt being in the current ir graph */
273
	edges_notify_edge(node, n, in, node->in[n + 1], irg);
274
275

	node->in[n + 1] = in;
Christian Schäfer's avatar
Christian Schäfer committed
276
277
}

278
279
int add_irn_n(ir_node *node, ir_node *in)
{
280
281
282
283
284
285
286
287
	int pos;
	ir_graph *irg = get_irn_irg(node);

	assert(node->op->opar == oparity_dynamic);
	pos = ARR_LEN(node->in) - 1;
	ARR_APP1(ir_node *, node->in, in);
	edges_notify_edge(node, pos, node->in[pos + 1], NULL, irg);

288
289
290
	/* Call the hook */
	hook_set_irn_n(node, pos, node->in[pos + 1], NULL);

291
292
293
	return pos;
}

Christoph Mallon's avatar
Christoph Mallon committed
294
295
296
297
298
299
300
301
302
void del_Sync_n(ir_node *n, int i)
{
	int      arity     = get_Sync_n_preds(n);
	ir_node *last_pred = get_Sync_pred(n, arity - 1);
	set_Sync_pred(n, i, last_pred);
	edges_notify_edge(n, arity - 1, NULL, last_pred, get_irn_irg(n));
	ARR_SHRINKLEN(get_irn_in(n), arity);
}

303
304
int (get_irn_deps)(const ir_node *node)
{
Sebastian Hack's avatar
Sebastian Hack committed
305
306
307
	return _get_irn_deps(node);
}

308
309
ir_node *(get_irn_dep)(const ir_node *node, int pos)
{
Sebastian Hack's avatar
Sebastian Hack committed
310
311
312
	return _get_irn_dep(node, pos);
}

313
314
void (set_irn_dep)(ir_node *node, int pos, ir_node *dep)
{
Sebastian Hack's avatar
Sebastian Hack committed
315
316
317
	_set_irn_dep(node, pos, dep);
}

318
319
int add_irn_dep(ir_node *node, ir_node *dep)
{
Sebastian Hack's avatar
Sebastian Hack committed
320
321
	int res = 0;

322
323
	/* DEP edges are only allowed in backend phase */
	assert(get_irg_phase_state(get_irn_irg(node)) == phase_backend);
Sebastian Hack's avatar
Sebastian Hack committed
324
325
326
	if (node->deps == NULL) {
		node->deps = NEW_ARR_F(ir_node *, 1);
		node->deps[0] = dep;
327
	} else {
Sebastian Hack's avatar
Sebastian Hack committed
328
329
330
		int i, n;
		int first_zero = -1;

331
332
		for (i = 0, n = ARR_LEN(node->deps); i < n; ++i) {
			if (node->deps[i] == NULL)
Sebastian Hack's avatar
Sebastian Hack committed
333
334
				first_zero = i;

335
			if (node->deps[i] == dep)
Sebastian Hack's avatar
Sebastian Hack committed
336
337
338
				return i;
		}

339
		if (first_zero >= 0) {
Sebastian Hack's avatar
Sebastian Hack committed
340
341
			node->deps[first_zero] = dep;
			res = first_zero;
342
		} else {
Sebastian Hack's avatar
Sebastian Hack committed
343
344
345
346
347
348
349
350
351
352
			ARR_APP1(ir_node *, node->deps, dep);
			res = n;
		}
	}

	edges_notify_edge_kind(node, res, dep, NULL, EDGE_KIND_DEP, get_irn_irg(node));

	return res;
}

353
354
void add_irn_deps(ir_node *tgt, ir_node *src)
{
Sebastian Hack's avatar
Sebastian Hack committed
355
356
	int i, n;

357
	for (i = 0, n = get_irn_deps(src); i < n; ++i)
Sebastian Hack's avatar
Sebastian Hack committed
358
359
360
361
		add_irn_dep(tgt, get_irn_dep(src, i));
}


362
363
ir_mode *(get_irn_mode)(const ir_node *node)
{
364
	return _get_irn_mode(node);
Christian Schäfer's avatar
Christian Schäfer committed
365
366
}

367
368
void (set_irn_mode)(ir_node *node, ir_mode *mode)
{
369
	_set_irn_mode(node, mode);
Till Riedel's avatar
Till Riedel committed
370
371
}

372
373
ir_op *(get_irn_op)(const ir_node *node)
{
374
	return _get_irn_op(node);
Christian Schäfer's avatar
Christian Schäfer committed
375
376
377
}

/* should be private to the library: */
378
379
void (set_irn_op)(ir_node *node, ir_op *op)
{
380
	_set_irn_op(node, op);
Christian Schäfer's avatar
Christian Schäfer committed
381
382
}

383
384
unsigned (get_irn_opcode)(const ir_node *node)
{
385
	return _get_irn_opcode(node);
Götz Lindenmaier's avatar
Götz Lindenmaier committed
386
387
}

388
389
const char *get_irn_opname(const ir_node *node)
{
390
	assert(node);
391
	if (is_Phi0(node)) return "Phi0";
392
	return get_id_str(node->op->name);
Götz Lindenmaier's avatar
Götz Lindenmaier committed
393
394
}

395
396
ident *get_irn_opident(const ir_node *node)
{
397
398
	assert(node);
	return node->op->name;
399
400
}

401
402
ir_visited_t (get_irn_visited)(const ir_node *node)
{
403
	return _get_irn_visited(node);
404
405
}

406
407
void (set_irn_visited)(ir_node *node, ir_visited_t visited)
{
408
	_set_irn_visited(node, visited);
Christian Schäfer's avatar
Christian Schäfer committed
409
}
410

411
412
void (mark_irn_visited)(ir_node *node)
{
413
	_mark_irn_visited(node);
414
415
}

416
417
int (irn_visited)(const ir_node *node)
{
418
	return _irn_visited(node);
419
420
}

421
422
int (irn_visited_else_mark)(ir_node *node)
{
423
424
425
	return _irn_visited_else_mark(node);
}

426
427
void (set_irn_link)(ir_node *node, void *link)
{
428
	_set_irn_link(node, link);
Christian Schäfer's avatar
Christian Schäfer committed
429
430
}

431
432
void *(get_irn_link)(const ir_node *node)
{
433
	return _get_irn_link(node);
Christian Schäfer's avatar
Christian Schäfer committed
434
435
}

436
437
op_pin_state (get_irn_pinned)(const ir_node *node)
{
438
	return _get_irn_pinned(node);
439
440
}

441
442
op_pin_state (is_irn_pinned_in_irg) (const ir_node *node)
{
443
	return _is_irn_pinned_in_irg(node);
444
445
}

446
447
void set_irn_pinned(ir_node *node, op_pin_state state)
{
448
	/* due to optimization an opt may be turned into a Tuple */
449
	if (is_Tuple(node))
450
		return;
Michael Beck's avatar
Michael Beck committed
451

452
453
	assert(node && get_op_pinned(get_irn_op(node)) >= op_pin_state_exc_pinned);
	assert(state == op_pin_state_pinned || state == op_pin_state_floats);
Michael Beck's avatar
Michael Beck committed
454

455
	node->attr.except.pin_state = state;
Michael Beck's avatar
Michael Beck committed
456
}
Götz Lindenmaier's avatar
Götz Lindenmaier committed
457

Götz Lindenmaier's avatar
Götz Lindenmaier committed
458
/* Outputs a unique number for this node */
459
460
long get_irn_node_nr(const ir_node *node)
{
461
462
	assert(node);
	return node->node_nr;
463
}
Götz Lindenmaier's avatar
Götz Lindenmaier committed
464

465
466
void *(get_irn_generic_attr)(ir_node *node)
{
467
468
	assert(is_ir_node(node));
	return _get_irn_generic_attr(node);
469
470
}

471
472
const void *(get_irn_generic_attr_const)(const ir_node *node)
{
473
474
475
476
	assert(is_ir_node(node));
	return _get_irn_generic_attr_const(node);
}

477
478
unsigned (get_irn_idx)(const ir_node *node)
{
479
480
	assert(is_ir_node(node));
	return _get_irn_idx(node);
481
482
}

483
484
int get_irn_pred_pos(ir_node *node, ir_node *arg)
{
485
486
487
488
489
490
	int i;
	for (i = get_irn_arity(node) - 1; i >= 0; i--) {
		if (get_irn_n(node, i) == arg)
			return i;
	}
	return -1;
491
492
}

Christian Schäfer's avatar
Christian Schäfer committed
493
494
/** manipulate fields of individual nodes **/

495
ir_node *(get_nodes_block)(const ir_node *node)
496
{
497
	return _get_nodes_block(node);
Christian Schäfer's avatar
Christian Schäfer committed
498
499
}

500
501
void set_nodes_block(ir_node *node, ir_node *block)
{
502
503
	assert(node->op != op_Block);
	set_irn_n(node, -1, block);
Christian Schäfer's avatar
Christian Schäfer committed
504
505
}

506
507
/* Test whether arbitrary node is frame pointer, i.e. Proj(pn_Start_P_frame_base)
 * from Start.  If so returns frame type, else Null. */
508
509
ir_type *is_frame_pointer(const ir_node *n)
{
510
511
	if (is_Proj(n) && (get_Proj_proj(n) == pn_Start_P_frame_base)) {
		ir_node *start = get_Proj_pred(n);
512
		if (is_Start(start)) {
513
514
515
516
			return get_irg_frame_type(get_irn_irg(start));
		}
	}
	return NULL;
517
518
}

519
520
/* Test whether arbitrary node is tls pointer, i.e. Proj(pn_Start_P_tls)
 * from Start.  If so returns tls type, else Null. */
521
522
ir_type *is_tls_pointer(const ir_node *n)
{
523
	if (is_Proj(n) && (get_Proj_proj(n) == pn_Start_P_tls)) {
524
		ir_node *start = get_Proj_pred(n);
525
		if (is_Start(start)) {
526
527
528
529
			return get_tls_type();
		}
	}
	return NULL;
530
531
}

532
533
ir_node **get_Block_cfgpred_arr(ir_node *node)
{
534
	assert(is_Block(node));
535
	return (ir_node **)&(get_irn_in(node)[1]);
536
537
}

538
539
int (get_Block_n_cfgpreds)(const ir_node *node)
{
540
	return _get_Block_n_cfgpreds(node);
Christian Schäfer's avatar
Christian Schäfer committed
541
542
}

543
544
ir_node *(get_Block_cfgpred)(const ir_node *node, int pos)
{
545
	return _get_Block_cfgpred(node, pos);
Christian Schäfer's avatar
Christian Schäfer committed
546
547
}

548
549
void set_Block_cfgpred(ir_node *node, int pos, ir_node *pred)
{
550
	assert(is_Block(node));
551
	set_irn_n(node, pos, pred);
Christian Schäfer's avatar
Christian Schäfer committed
552
553
}

554
555
int get_Block_cfgpred_pos(const ir_node *block, const ir_node *pred)
{
556
557
558
559
560
561
562
563
564
	int i;

	for (i = get_Block_n_cfgpreds(block) - 1; i >= 0; --i) {
		if (get_Block_cfgpred_block(block, i) == pred)
			return i;
	}
	return -1;
}

565
566
ir_node *(get_Block_cfgpred_block)(const ir_node *node, int pos)
{
567
	return _get_Block_cfgpred_block(node, pos);
568
569
}

570
571
int get_Block_matured(const ir_node *node)
{
572
	assert(is_Block(node));
Michael Beck's avatar
Michael Beck committed
573
	return (int)node->attr.block.is_matured;
Christian Schäfer's avatar
Christian Schäfer committed
574
575
}

576
577
void set_Block_matured(ir_node *node, int matured)
{
578
	assert(is_Block(node));
Michael Beck's avatar
Michael Beck committed
579
	node->attr.block.is_matured = matured;
Christian Schäfer's avatar
Christian Schäfer committed
580
}
Michael Beck's avatar
Michael Beck committed
581

582
583
ir_visited_t (get_Block_block_visited)(const ir_node *node)
{
584
	return _get_Block_block_visited(node);
Christian Schäfer's avatar
Christian Schäfer committed
585
586
}

587
588
void (set_Block_block_visited)(ir_node *node, ir_visited_t visit)
{
589
	_set_Block_block_visited(node, visit);
Christian Schäfer's avatar
Christian Schäfer committed
590
591
}

592
593
void (mark_Block_block_visited)(ir_node *node)
{
594
	_mark_Block_block_visited(node);
Götz Lindenmaier's avatar
Götz Lindenmaier committed
595
596
}

597
598
int (Block_block_visited)(const ir_node *node)
{
Matthias Braun's avatar
Matthias Braun committed
599
600
601
	return _Block_block_visited(node);
}

602
603
ir_node *(set_Block_dead)(ir_node *block)
{
604
	return _set_Block_dead(block);
605
606
}

607
608
int (is_Block_dead)(const ir_node *block)
{
609
	return _is_Block_dead(block);
610
611
}

612
613
ir_extblk *get_Block_extbb(const ir_node *block)
{
Michael Beck's avatar
Michael Beck committed
614
	ir_extblk *res;
615
	assert(is_Block(block));
Michael Beck's avatar
Michael Beck committed
616
617
	res = block->attr.block.extblk;
	assert(res == NULL || is_ir_extbb(res));
618
	return res;
619
620
}

621
622
void set_Block_extbb(ir_node *block, ir_extblk *extblk)
{
623
	assert(is_Block(block));
Michael Beck's avatar
Michael Beck committed
624
	assert(extblk == NULL || is_ir_extbb(extblk));
625
	block->attr.block.extblk = extblk;
626
627
}

628
/* returns the graph of a Block. */
629
630
ir_graph *(get_Block_irg)(const ir_node *block)
{
631
	return _get_Block_irg(block);
632
633
}

634
635
ir_entity *create_Block_entity(ir_node *block)
{
636
	ir_entity *entity;
Michael Beck's avatar
Michael Beck committed
637
	assert(is_Block(block));
638
639
640
641
642
643
644
645

	entity = block->attr.block.entity;
	if (entity == NULL) {
		ir_label_t  nr;
		ir_type   *glob;

		glob = get_glob_type();
		entity = new_entity(glob, id_unique("block_%u"), get_code_type());
646
647
		set_entity_visibility(entity, ir_visibility_local);
		set_entity_linkage(entity, IR_LINKAGE_CONSTANT);
648
649
650
651
652
653
654
		nr = get_irp_next_label_nr();
		set_entity_label(entity, nr);
		set_entity_compiler_generated(entity, 1);

		block->attr.block.entity = entity;
	}
	return entity;
Michael Beck's avatar
Michael Beck committed
655
656
}

657
658
ir_entity *get_Block_entity(const ir_node *block)
{
Michael Beck's avatar
Michael Beck committed
659
	assert(is_Block(block));
660
	return block->attr.block.entity;
Michael Beck's avatar
Michael Beck committed
661
662
}

663
664
void set_Block_entity(ir_node *block, ir_entity *entity)
{
Michael Beck's avatar
Michael Beck committed
665
	assert(is_Block(block));
666
667
668
669
670
671
672
	assert(get_entity_type(entity) == get_code_type());
	block->attr.block.entity = entity;
}

int has_Block_entity(const ir_node *block)
{
	return block->attr.block.entity != NULL;
Michael Beck's avatar
Michael Beck committed
673
674
}

675
676
ir_node *(get_Block_phis)(const ir_node *block)
{
677
678
679
	return _get_Block_phis(block);
}

680
681
void (set_Block_phis)(ir_node *block, ir_node *phi)
{
682
683
684
	_set_Block_phis(block, phi);
}

685
686
void (add_Block_phi)(ir_node *block, ir_node *phi)
{
Michael Beck's avatar
Michael Beck committed
687
688
689
690
	_add_Block_phi(block, phi);
}

/* Get the Block mark (single bit). */
691
692
unsigned (get_Block_mark)(const ir_node *block)
{
Michael Beck's avatar
Michael Beck committed
693
694
695
696
	return _get_Block_mark(block);
}

/* Set the Block mark (single bit). */
697
698
void (set_Block_mark)(ir_node *block, unsigned mark)
{
Michael Beck's avatar
Michael Beck committed
699
700
701
	_set_Block_mark(block, mark);
}

702
703
int get_End_n_keepalives(const ir_node *end)
{
704
	assert(is_End(end));
705
	return (get_irn_arity(end) - END_KEEPALIVE_OFFSET);
706
707
}

708
709
ir_node *get_End_keepalive(const ir_node *end, int pos)
{
710
	assert(is_End(end));
711
	return get_irn_n(end, pos + END_KEEPALIVE_OFFSET);
712
713
}

714
715
void add_End_keepalive(ir_node *end, ir_node *ka)
{
716
	assert(is_End(end));
717
	add_irn_n(end, ka);
718
719
}

720
721
void set_End_keepalive(ir_node *end, int pos, ir_node *ka)
{
722
	assert(is_End(end));
723
	set_irn_n(end, pos + END_KEEPALIVE_OFFSET, ka);
724
725
}

726
/* Set new keep-alives */
727
728
void set_End_keepalives(ir_node *end, int n, ir_node *in[])
{
729
730
	size_t e;
	int    i;
731
	ir_graph *irg = get_irn_irg(end);
732

733
	/* notify that edges are deleted */
734
735
	for (e = END_KEEPALIVE_OFFSET; e < ARR_LEN(end->in) - 1; ++e) {
		edges_notify_edge(end, e, NULL, end->in[e + 1], irg);
736
737
	}
	ARR_RESIZE(ir_node *, end->in, n + 1 + END_KEEPALIVE_OFFSET);
738

739
740
	for (i = 0; i < n; ++i) {
		end->in[1 + END_KEEPALIVE_OFFSET + i] = in[i];
741
		edges_notify_edge(end, END_KEEPALIVE_OFFSET + i, end->in[1 + END_KEEPALIVE_OFFSET + i], NULL, irg);
742
	}
743
}
744

745
/* Set new keep-alives from old keep-alives, skipping irn */
746
747
void remove_End_keepalive(ir_node *end, ir_node *irn)
{
748
749
750
751
752
753
754
755
756
757
758
759
760
	int      n = get_End_n_keepalives(end);
	int      i, idx;
	ir_graph *irg;

	idx = -1;
	for (i = n -1; i >= 0; --i) {
		ir_node *old_ka = end->in[1 + END_KEEPALIVE_OFFSET + i];

		/* find irn */
		if (old_ka == irn) {
			idx = i;
			goto found;
		}
761
	}
762
763
764
765
766
767
768
769
770
771
772
773
774
775
	return;
found:
	irg = get_irn_irg(end);

	/* remove the edge */
	edges_notify_edge(end, idx, NULL, irn, irg);

	if (idx != n - 1) {
		/* exchange with the last one */
		ir_node *old = end->in[1 + END_KEEPALIVE_OFFSET + n - 1];
		edges_notify_edge(end, n - 1, NULL, old, irg);
		end->in[1 + END_KEEPALIVE_OFFSET + idx] = old;
		edges_notify_edge(end, idx, old, NULL, irg);
	}
776
	/* now n - 1 keeps, 1 block input */
777
	ARR_RESIZE(ir_node *, end->in, (n - 1) + 1 + END_KEEPALIVE_OFFSET);
778
}
779

Michael Beck's avatar
Michael Beck committed
780
/* remove Bads, NoMems and doublets from the keep-alive set */
781
782
void remove_End_Bads_and_doublets(ir_node *end)
{
783
784
785
786
787
788
789
790
791
792
793
794
795
	pset_new_t keeps;
	int        idx, n = get_End_n_keepalives(end);
	ir_graph   *irg;

	if (n <= 0)
		return;

	irg = get_irn_irg(end);
	pset_new_init(&keeps);

	for (idx = n - 1; idx >= 0; --idx) {
		ir_node *ka = get_End_keepalive(end, idx);

Michael Beck's avatar
Michael Beck committed
796
		if (is_Bad(ka) || is_NoMem(ka) || pset_new_contains(&keeps, ka)) {
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
			/* remove the edge */
			edges_notify_edge(end, idx, NULL, ka, irg);

			if (idx != n - 1) {
				/* exchange with the last one */
				ir_node *old = end->in[1 + END_KEEPALIVE_OFFSET + n - 1];
				edges_notify_edge(end, n - 1, NULL, old, irg);
				end->in[1 + END_KEEPALIVE_OFFSET + idx] = old;
				edges_notify_edge(end, idx, old, NULL, irg);
			}
			--n;
		} else {
			pset_new_insert(&keeps, ka);
		}
	}
	/* n keeps, 1 block input */
	ARR_RESIZE(ir_node *, end->in, n + 1 + END_KEEPALIVE_OFFSET);

	pset_new_destroy(&keeps);
}

818
819
void free_End(ir_node *end)
{
820
	assert(is_End(end));
821
822
823
824
	end->kind = k_BAD;
	DEL_ARR_F(end->in);
	end->in = NULL;   /* @@@ make sure we get an error if we use the
	                     in array afterwards ... */
825
826
}

827
size_t get_Return_n_ress(const ir_node *node)
828
{
829
	assert(is_Return(node));
830
	return (size_t)(get_irn_arity(node) - RETURN_RESULT_OFFSET);
831
832
}

833
ir_node **get_Return_res_arr(ir_node *node)
834
{
835
	assert(is_Return(node));
836
837
838
839
	if (get_Return_n_ress(node) > 0)
		return (ir_node **)&(get_irn_in(node)[1 + RETURN_RESULT_OFFSET]);
	else
		return NULL;
840
841
}

842
ir_node *get_Return_res(const ir_node *node, int pos)
843
{
844
	assert(is_Return(node));
845
846
	assert(pos >= 0);
	assert(get_Return_n_ress(node) > (size_t)pos);
847
	return get_irn_n(node, pos + RETURN_RESULT_OFFSET);
Christian Schäfer's avatar
Christian Schäfer committed
848
849
}

850
void set_Return_res(ir_node *node, int pos, ir_node *res)
851
{
852
	assert(is_Return(node));
853
	set_irn_n(node, pos + RETURN_RESULT_OFFSET, res);
Christian Schäfer's avatar
Christian Schäfer committed
854
855
}

856
857
int (is_Const_null)(const ir_node *node)
{
858
859
860
	return _is_Const_null(node);
}

861
862
int (is_Const_one)(const ir_node *node)
{
863
864
865
	return _is_Const_one(node);
}

866
867
int (is_Const_all_one)(const ir_node *node)
{
868
	return _is_Const_all_one(node);
Sebastian Hack's avatar
Sebastian Hack committed
869
870
}

871
872


873
symconst_kind get_SymConst_kind(const ir_node *node)
874
{
875
	assert(is_SymConst(node));
876
	return node->attr.symc.kind;
Christian Schäfer's avatar
Christian Schäfer committed
877
878
}

879
void set_SymConst_kind(ir_node *node, symconst_kind kind)
880
{
881
	assert(is_SymConst(node));
882
	node->attr.symc.kind = kind;
Christian Schäfer's avatar
Christian Schäfer committed
883
884
}

885
ir_type *get_SymConst_type(const ir_node *node)
886
{
Michael Beck's avatar
Michael Beck committed
887
888
889
	/* the cast here is annoying, but we have to compensate for
	   the skip_tip() */
	ir_node *irn = (ir_node *)node;
890
	assert(is_SymConst(node) &&
891
	       (SYMCONST_HAS_TYPE(get_SymConst_kind(node))));
Matthias Braun's avatar
Matthias Braun committed
892
	return irn->attr.symc.sym.type_p;
Christian Schäfer's avatar
Christian Schäfer committed
893
894
}

895
void set_SymConst_type(ir_node *node, ir_type *tp)
896
{
897
	assert(is_SymConst(node) &&
898
899
	       (SYMCONST_HAS_TYPE(get_SymConst_kind(node))));
	node->attr.symc.sym.type_p = tp;
Christian Schäfer's avatar
Christian Schäfer committed
900
901
}

Beyhan's avatar
Beyhan committed
902
903

/* Only to access SymConst of kind symconst_addr_ent.  Else assertion: */
904
905
ir_entity *get_SymConst_entity(const ir_node *node)
{
906
	assert(is_SymConst(node) && SYMCONST_HAS_ENT(get_SymConst_kind(node)));
907
	return node->attr.symc.sym.entity_p;