summaryrefslogtreecommitdiffhomepage
path: root/ir/ir/irop.c
blob: fc423036f1b360adfa3d1717c106337af9c1542e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
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
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
/*
 * This file is part of libFirm.
 * Copyright (C) 2012 University of Karlsruhe.
 */

/**
 * @file
 * @brief   Representation of opcode of intermediate operation.
 * @author  Christian Schaefer, Goetz Lindenmaier, Michael Beck
 */
#include "irop_t.h"

#include "benode.h"
#include "cgana.h"
#include "irbackedge_t.h"
#include "irhooks.h"
#include "irnode_t.h"
#include "irnode_t.h"
#include "iropt_t.h"
#include "irverify_t.h"
#include "panic.h"
#include "reassoc_t.h"
#include "xmalloc.h"
#include <string.h>

static ir_op **opcodes;
/** the available next opcode */
static unsigned next_iro = iro_last+1;

static ir_type *default_get_type_attr(const ir_node *node);
static ir_entity *default_get_entity_attr(const ir_node *node);
static unsigned default_hash_node(const ir_node *node);

int attrs_equal_false(const ir_node *a, const ir_node *b)
{
	(void)a;
	(void)b;
	return false;
}

static int attrs_equal_true(const ir_node *a, const ir_node *b)
{
	(void)a;
	(void)b;
	return true;
}

ir_op *new_ir_op(unsigned code, const char *name, op_pin_state p,
                 irop_flags flags, op_arity opar, int op_index,
                 size_t attr_size)
{
	ir_op *res = XMALLOCZ(ir_op);

	res->code      = code;
	res->name      = name;
	res->pin_state = p;
	res->attr_size = attr_size;
	res->flags     = flags;
	res->opar      = opar;
	res->op_index  = op_index;
	res->tag       = 0;

	memset(&res->ops, 0, sizeof(res->ops));
	res->ops.hash            = default_hash_node;
	res->ops.copy_attr       = default_copy_attr;
	res->ops.attrs_equal     = attrs_equal_true;
	res->ops.get_type_attr   = default_get_type_attr;
	res->ops.get_entity_attr = default_get_entity_attr;

	size_t len = ARR_LEN(opcodes);
	if ((size_t)code >= len) {
		ARR_RESIZE(ir_op*, opcodes, (size_t)code+1);
		memset(&opcodes[len], 0, (code-len+1) * sizeof(opcodes[0]));
	}
	if (opcodes[code] != NULL)
		panic("opcode registered twice");
	opcodes[code] = res;

	return res;
}

void free_ir_op(ir_op *code)
{
	assert(opcodes[code->code] == code);
	opcodes[code->code] = NULL;

	free(code);
}

unsigned ir_get_n_opcodes(void)
{
	return ARR_LEN(opcodes);
}

ir_op *ir_get_opcode(unsigned code)
{
	assert((size_t)code < ARR_LEN(opcodes));
	return opcodes[code];
}

void ir_clear_opcodes_generic_func(void)
{
	for (size_t i = 0, n = ir_get_n_opcodes(); i < n; ++i) {
		ir_op *op = ir_get_opcode(i);
		if (op == NULL)
			continue;
		op->ops.generic  = (op_func)NULL;
		op->ops.generic1 = (op_func)NULL;
		op->ops.generic2 = (op_func)NULL;
	}
}

void ir_op_set_memory_index(ir_op *op, int memory_index)
{
	assert(is_op_uses_memory(op));
	op->memory_index = memory_index;
}

void ir_op_set_fragile_indices(ir_op *op, unsigned pn_x_regular,
                               unsigned pn_x_except)
{
	assert(is_op_fragile(op));
	op->pn_x_regular = pn_x_regular;
	op->pn_x_except = pn_x_except;
}

const char *get_op_name (const ir_op *op)
{
	return op->name;
}

unsigned (get_op_code)(const ir_op *op)
{
  return get_op_code_(op);
}

const char *get_op_pin_state_name(op_pin_state s)
{
	switch (s) {
#define XXX(s) case s: return #s
	XXX(op_pin_state_floats);
	XXX(op_pin_state_pinned);
	XXX(op_pin_state_exc_pinned);
#undef XXX
	}
	return "<none>";
}

op_pin_state (get_op_pinned)(const ir_op *op)
{
	return get_op_pinned_(op);
}

unsigned get_next_ir_opcode(void)
{
	return next_iro++;
}

unsigned get_next_ir_opcodes(unsigned num)
{
	unsigned base = next_iro;
	next_iro += num;
	return base;
}

op_func (get_generic_function_ptr)(const ir_op *op)
{
	return get_generic_function_ptr_(op);
}

void (set_generic_function_ptr)(ir_op *op, op_func func)
{
	set_generic_function_ptr_(op, func);
}

irop_flags get_op_flags(const ir_op *op)
{
	return (irop_flags)op->flags;
}

static ir_type *default_get_type_attr(const ir_node *node)
{
	(void)node;
	return get_unknown_type();
}

static ir_entity *default_get_entity_attr(const ir_node *node)
{
	(void)node;
	return NULL;
}

static unsigned default_hash_node(const ir_node *node)
{
	/* hash table value = 9*(9*(9*(9*(9*arity+in[0])+in[1])+ ...)+mode)+code */
	int      arity          = get_irn_arity(node);
	unsigned hash           = (unsigned)arity;
	bool     consider_block = is_cfop(node) || (!get_opt_global_cse() && !is_Block(node));

	/* consider all in nodes... except the block if not a control flow. */
	for (int i = consider_block ? -1 : 0;  i < arity;  ++i) {
		ir_node *pred = get_irn_n(node, i);
		hash = 9*hash + hash_ptr(pred);
	}

	/* ...mode,... */
	hash = 9*hash + hash_ptr(get_irn_mode(node));
	/* ...and code */
	hash = 9*hash + hash_ptr(get_irn_op(node));

	return hash;
}

/**
 * Calculate a hash value of a Const node.
 */
static unsigned hash_Const(const ir_node *node)
{
	/* special value for const, as they only differ in their tarval. */
	unsigned hash = hash_ptr(node->attr.con.tarval);
	return hash;
}

/**
 * Calculate a hash value of an Address/Offset node.
 */
static unsigned hash_entconst(const ir_node *node)
{
	unsigned hash = hash_ptr(node->attr.entc.entity);
	return hash;
}

/**
 * Calculate a hash value of an Align/Size node.
 */
static unsigned hash_typeconst(const ir_node *node)
{
	unsigned hash = hash_ptr(node->attr.typec.type);
	return hash;
}

/** Compares two exception attributes */
static bool except_attrs_equal(const except_attr *a, const except_attr *b)
{
	return a->pinned == b->pinned;
}

/** Compares the attributes of two Const nodes. */
static int attrs_equal_Const(const ir_node *a, const ir_node *b)
{
	return get_Const_tarval(a) == get_Const_tarval(b);
}

/** Compares the attributes of two Proj nodes. */
static int attrs_equal_Proj(const ir_node *a, const ir_node *b)
{
	return a->attr.proj.num == b->attr.proj.num;
}

/** Compares the attributes of two Alloc nodes. */
static int attrs_equal_Alloc(const ir_node *a, const ir_node *b)
{
	const alloc_attr *pa = &a->attr.alloc;
	const alloc_attr *pb = &b->attr.alloc;
	return pa->alignment == pb->alignment;
}

/** Compares the attributes of two Address/Offset nodes. */
static int attrs_equal_entconst(const ir_node *a, const ir_node *b)
{
	const entconst_attr *pa = &a->attr.entc;
	const entconst_attr *pb = &b->attr.entc;
	return pa->entity == pb->entity;
}

/** Compares the attributes of two Align/Size nodes. */
static int attrs_equal_typeconst(const ir_node *a, const ir_node *b)
{
	const typeconst_attr *pa = &a->attr.typec;
	const typeconst_attr *pb = &b->attr.typec;
	return pa->type == pb->type;
}

/** Compares the attributes of two Call nodes. */
static int attrs_equal_Call(const ir_node *a, const ir_node *b)
{
	const call_attr *pa = &a->attr.call;
	const call_attr *pb = &b->attr.call;
	return pa->type == pb->type && except_attrs_equal(&pa->exc, &pb->exc);
}

/** Compares the attributes of two Sel nodes. */
static int attrs_equal_Sel(const ir_node *a, const ir_node *b)
{
	const ir_type *a_type = get_Sel_type(a);
	const ir_type *b_type = get_Sel_type(b);
	return a_type == b_type;
}

static int attrs_equal_Member(const ir_node *a, const ir_node *b)
{
	const ir_entity *a_ent = get_Member_entity(a);
	const ir_entity *b_ent = get_Member_entity(b);
	return a_ent == b_ent;
}

/** Compares the attributes of two Phi nodes. */
static int attrs_equal_Phi(const ir_node *a, const ir_node *b)
{
	(void)b;
	/* do not CSE Phi-nodes without any inputs when building new graphs */
	if (get_irn_arity(a) == 0 &&
		irg_is_constrained(get_irn_irg(a), IR_GRAPH_CONSTRAINT_CONSTRUCTION))
	    return false;
	return true;
}

/** Compares the attributes of two Load nodes. */
static int attrs_equal_Load(const ir_node *a, const ir_node *b)
{
	const load_attr *attr_a = &a->attr.load;
	const load_attr *attr_b = &b->attr.load;
	return attr_a->volatility == attr_b->volatility
	    && attr_a->unaligned == attr_b->unaligned
	    && attr_a->mode == attr_b->mode
	    && except_attrs_equal(&attr_a->exc, &attr_b->exc);
}

/** Compares the attributes of two Store nodes. */
static int attrs_equal_Store(const ir_node *a, const ir_node *b)
{
	const store_attr *attr_a = &a->attr.store;
	const store_attr *attr_b = &b->attr.store;
	return attr_a->unaligned == attr_b->unaligned
	    && attr_a->volatility == attr_b->volatility
	    && except_attrs_equal(&attr_a->exc, &attr_b->exc);
}

static int attrs_equal_CopyB(const ir_node *a, const ir_node *b)
{
	const copyb_attr *attr_a = &a->attr.copyb;
	const copyb_attr *attr_b = &b->attr.copyb;
	return attr_a->type == attr_b->type
	    && attr_a->volatility == attr_b->volatility;
}

/** Compares the attributes of two Div nodes. */
static int attrs_equal_Div(const ir_node *a, const ir_node *b)
{
	const div_attr *attr_a = &a->attr.div;
	const div_attr *attr_b = &b->attr.div;
	return attr_a->resmode == attr_b->resmode
	    && attr_a->no_remainder == attr_b->no_remainder
	    && except_attrs_equal(&attr_a->exc, &attr_b->exc);
}

/** Compares the attributes of two Mod nodes. */
static int attrs_equal_Mod(const ir_node *a, const ir_node *b)
{
	const mod_attr *attr_a = &a->attr.mod;
	const mod_attr *attr_b = &b->attr.mod;
	return attr_a->resmode == attr_b->resmode
	    && except_attrs_equal(&attr_a->exc, &attr_b->exc);
}

static int attrs_equal_Cmp(const ir_node *a, const ir_node *b)
{
	const cmp_attr *attr_a = &a->attr.cmp;
	const cmp_attr *attr_b = &b->attr.cmp;
	return attr_a->relation == attr_b->relation;
}

/** Compares the attributes of two Confirm nodes. */
static int attrs_equal_Confirm(const ir_node *a, const ir_node *b)
{
	const confirm_attr *attr_a = &a->attr.confirm;
	const confirm_attr *attr_b = &b->attr.confirm;
	return attr_a->relation == attr_b->relation;
}

/** Compares the attributes of two Builtin nodes. */
static int attrs_equal_Builtin(const ir_node *a, const ir_node *b)
{
	const builtin_attr *attr_a = &a->attr.builtin;
	const builtin_attr *attr_b = &b->attr.builtin;
	return attr_a->kind == attr_b->kind && attr_a->type == attr_b->type
	    && except_attrs_equal(&attr_a->exc, &attr_b->exc);
}

/** Compares the attributes of two ASM nodes. */
static int attrs_equal_ASM(const ir_node *a, const ir_node *b)
{
	const asm_attr *attr_a = &a->attr.assem;
	const asm_attr *attr_b = &b->attr.assem;
	if (attr_a->text != attr_b->text)
		return false;

	int n_inputs = get_ASM_n_inputs(a);
	if (n_inputs != get_ASM_n_inputs(b))
		return false;

	size_t const n_constraints = get_ASM_n_constraints(a);
	if (n_constraints != get_ASM_n_constraints(b))
		return false;

	ir_asm_constraint const *const cons_a = get_ASM_constraints(a);
	ir_asm_constraint const *const cons_b = get_ASM_constraints(b);
	for (size_t i = 0; i < n_constraints; ++i) {
		if (cons_a[i].in_pos     != cons_b[i].in_pos ||
		    cons_a[i].out_pos    != cons_b[i].out_pos ||
		    cons_a[i].constraint != cons_b[i].constraint ||
		    cons_a[i].mode       != cons_b[i].mode)
			return false;
	}

	size_t n_clobbers = get_ASM_n_clobbers(a);
	if (n_clobbers != get_ASM_n_clobbers(b))
		return false;

	ident **cla = get_ASM_clobbers(a);
	ident **clb = get_ASM_clobbers(b);
	for (size_t i = 0; i < n_clobbers; ++i) {
		if (cla[i] != clb[i])
			return false;
	}

	return except_attrs_equal(&attr_a->exc, &attr_b->exc);
}

void default_copy_attr(ir_graph *irg, ir_node const *old_node, ir_node *new_node)
{
	(void)irg;
	assert(get_irn_op(old_node) == get_irn_op(new_node));
	size_t size = get_op_attr_size(get_irn_op(old_node));
	memcpy(&new_node->attr, &old_node->attr, size);
}

/**
 * Copies all Call attributes stored in the old node to the new node.
 */
static void call_copy_attr(ir_graph *irg, const ir_node *old_node,
                           ir_node *new_node)
{
	default_copy_attr(irg, old_node, new_node);
	cg_remove_call_callee_arr(new_node);
}

/**
 * Copies all Block attributes stored in the old node to the new node.
 */
static void block_copy_attr(ir_graph *irg, const ir_node *old_node,
                            ir_node *new_node)
{
	default_copy_attr(irg, old_node, new_node);
	new_node->attr.block.phis          = NULL;
	new_node->attr.block.backedge      = new_backedge_arr(get_irg_obstack(irg), get_irn_arity(new_node));
	new_node->attr.block.block_visited = 0;
	memset(&new_node->attr.block.dom, 0, sizeof(new_node->attr.block.dom));
	memset(&new_node->attr.block.pdom, 0, sizeof(new_node->attr.block.pdom));
	/* It should be safe to copy the entity here, as it has no back-link to the
	 * old block. It serves just as a label number, so copying a labeled block
	 * results in an exact copy. This is at least what we need for DCE to work.
	 */
	new_node->attr.block.entity         = old_node->attr.block.entity;
	new_node->attr.block.phis           = NULL;
}

/**
 * Copies all phi attributes stored in old node to the new node
 */
static void phi_copy_attr(ir_graph *irg, const ir_node *old_node,
                          ir_node *new_node)
{
	default_copy_attr(irg, old_node, new_node);
	new_node->attr.phi.next       = NULL;
	new_node->attr.phi.u.backedge = new_backedge_arr(get_irg_obstack(irg), get_irn_arity(new_node));
}

/**
 * Copies all ASM attributes stored in old node to the new node
 */
static void ASM_copy_attr(ir_graph *irg, const ir_node *old_node,
                          ir_node *new_node)
{
	default_copy_attr(irg, old_node, new_node);
	struct obstack *const obst = get_irg_obstack(irg);
	new_node->attr.assem.constraints = DUP_ARR_D(ir_asm_constraint, obst, old_node->attr.assem.constraints);
	new_node->attr.assem.clobbers    = DUP_ARR_D(ident*,            obst, old_node->attr.assem.clobbers);
}

static void switch_copy_attr(ir_graph *irg, const ir_node *old_node,
                             ir_node *new_node)
{
	const ir_switch_table *table = get_Switch_table(old_node);
	new_node->attr.switcha.table = ir_switch_table_duplicate(irg, table);
	new_node->attr.switcha.n_outs = old_node->attr.switcha.n_outs;
}

void set_op_hash(ir_op *op, hash_func func)
{
	op->ops.hash = func;
}

void set_op_computed_value(ir_op *op, computed_value_func func)
{
	op->ops.computed_value = func;
}

void set_op_computed_value_proj(ir_op *op, computed_value_func func)
{
	op->ops.computed_value_Proj = func;
}

void set_op_equivalent_node(ir_op *op, equivalent_node_func func)
{
	op->ops.equivalent_node = func;
}

void set_op_equivalent_node_proj(ir_op *op, equivalent_node_func func)
{
	op->ops.equivalent_node_Proj = func;
}

void set_op_transform_node(ir_op *op, transform_node_func func)
{
	op->ops.transform_node = func;
}

void set_op_transform_node_proj(ir_op *op, transform_node_func func)
{
	op->ops.transform_node_Proj = func;
}

void set_op_attrs_equal(ir_op *op, node_attrs_equal_func func)
{
	op->ops.attrs_equal = func;
}

void set_op_reassociate(ir_op *op, reassociate_func func)
{
	op->ops.reassociate = func;
}

void set_op_copy_attr(ir_op *op, copy_attr_func func)
{
	op->ops.copy_attr = func;
}

void set_op_get_type_attr(ir_op *op, get_type_attr_func func)
{
	op->ops.get_type_attr = func;
}

void set_op_get_entity_attr(ir_op *op, get_entity_attr_func func)
{
	op->ops.get_entity_attr = func;
}

void set_op_verify(ir_op *op, verify_node_func func)
{
	op->ops.verify_node = func;
}

void set_op_verify_proj(ir_op *op, verify_proj_node_func func)
{
	op->ops.verify_proj_node = func;
}

void set_op_dump(ir_op *op, dump_node_func func)
{
	op->ops.dump_node = func;
}

void firm_init_op(void)
{
	opcodes = NEW_ARR_F(ir_op*, 0);
	ir_init_opcodes();
	be_init_op();

	set_op_attrs_equal(op_ASM,     attrs_equal_ASM);
	set_op_attrs_equal(op_Address, attrs_equal_entconst);
	set_op_attrs_equal(op_Align,   attrs_equal_typeconst);
	set_op_attrs_equal(op_Alloc,   attrs_equal_Alloc);
	set_op_attrs_equal(op_Builtin, attrs_equal_Builtin);
	set_op_attrs_equal(op_Call,    attrs_equal_Call);
	set_op_attrs_equal(op_Cmp,     attrs_equal_Cmp);
	set_op_attrs_equal(op_Confirm, attrs_equal_Confirm);
	set_op_attrs_equal(op_Const,   attrs_equal_Const);
	set_op_attrs_equal(op_CopyB,   attrs_equal_CopyB);
	set_op_attrs_equal(op_Div,     attrs_equal_Div);
	set_op_attrs_equal(op_Dummy,   attrs_equal_false);
	set_op_attrs_equal(op_Load,    attrs_equal_Load);
	set_op_attrs_equal(op_Member,  attrs_equal_Member);
	set_op_attrs_equal(op_Mod,     attrs_equal_Mod);
	set_op_attrs_equal(op_Offset,  attrs_equal_entconst);
	set_op_attrs_equal(op_Phi,     attrs_equal_Phi);
	set_op_attrs_equal(op_Proj,    attrs_equal_Proj);
	set_op_attrs_equal(op_Sel,     attrs_equal_Sel);
	set_op_attrs_equal(op_Size,    attrs_equal_typeconst);
	set_op_attrs_equal(op_Store,   attrs_equal_Store);
	set_op_attrs_equal(op_Unknown, attrs_equal_false);

	set_op_hash(op_Address, hash_entconst);
	set_op_hash(op_Align,   hash_typeconst);
	set_op_hash(op_Const,   hash_Const);
	set_op_hash(op_Offset,  hash_entconst);
	set_op_hash(op_Size,    hash_typeconst);

	set_op_copy_attr(op_Call,   call_copy_attr);
	set_op_copy_attr(op_Block,  block_copy_attr);
	set_op_copy_attr(op_Phi,    phi_copy_attr);
	set_op_copy_attr(op_ASM,    ASM_copy_attr);
	set_op_copy_attr(op_Switch, switch_copy_attr);

	ir_register_opt_node_ops();
	ir_register_reassoc_node_ops();
	ir_register_verify_node_ops();
	ir_register_getter_ops();
}

void firm_finish_op(void)
{
	be_finish_op();
	ir_finish_opcodes();
	DEL_ARR_F(opcodes);
	opcodes = NULL;
}