amd64_transform.c 62.3 KB
Newer Older
1
2
/*
 * This file is part of libFirm.
3
 * Copyright (C) 2012 University of Karlsruhe.
4
5
6
7
8
9
 */

/**
 * @file
 * @brief   code selection (transform FIRM into amd64 FIRM)
 */
Matthias Braun's avatar
Matthias Braun committed
10
11
12
13
14
#include "debug.h"
#include "error.h"
#include "heights.h"
#include "ircons.h"
#include "irgmod.h"
15
16
#include "irgraph_t.h"
#include "irmode_t.h"
Matthias Braun's avatar
Matthias Braun committed
17
#include "irnode_t.h"
18
#include "iropt_t.h"
19
#include "tv_t.h"
Matthias Braun's avatar
Matthias Braun committed
20
#include "util.h"
21

22
23
24
#include "benode.h"
#include "betranshlp.h"
#include "beutil.h"
25
#include "bearch_amd64_t.h"
26
27
#include "beirg.h"
#include "beabihelper.h"
Matthias Braun's avatar
Matthias Braun committed
28
#include "besched.h"
29

Matthias Braun's avatar
Matthias Braun committed
30
31
#include "amd64_cconv.h"
#include "amd64_new_nodes.h"
32
33
#include "amd64_nodes_attr.h"
#include "amd64_transform.h"
Matthias Braun's avatar
Matthias Braun committed
34
#include "../ia32/x86_address_mode.h"
35
36
37
38
39

#include "gen_amd64_regalloc_if.h"

DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)

40
41
42
43
44
45
typedef struct reg_info_t {
	size_t   offset;
	ir_node *irn;
} reg_info_t;

static ir_mode         *mode_gp;
Matthias Braun's avatar
Matthias Braun committed
46
static ir_mode         *mode_flags;
47
48
49
50
51
52
53
54
static amd64_cconv_t   *current_cconv = NULL;
static reg_info_t       start_mem;
static reg_info_t       start_sp;
static reg_info_t       start_fp;
static size_t           start_callee_saves_offset;
static size_t           start_params_offset;
static pmap            *node_to_stack;
static be_stackorder_t *stackorder;
55

Matthias Braun's avatar
Matthias Braun committed
56
57
58
59
60
61
62
63
64
static const arch_register_req_t amd64_requirement_gp = {
	arch_register_req_type_normal,
	&amd64_reg_classes[CLASS_amd64_gp],
	NULL,
	0,
	0,
	1
};

Matthias Braun's avatar
Matthias Braun committed
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
#define BIT(x)    (1u << x)

static const arch_register_req_t amd64_requirement_gp_same_0 = {
	arch_register_req_type_normal | arch_register_req_type_should_be_same,
	&amd64_reg_classes[CLASS_amd64_gp],
	NULL,
	BIT(0),
	0,
	1
};

static const arch_register_req_t amd64_requirement_gp_same_0_not_1 = {
	arch_register_req_type_normal | arch_register_req_type_should_be_same
	| arch_register_req_type_must_be_different,
	&amd64_reg_classes[CLASS_amd64_gp],
	NULL,
	BIT(0),
	BIT(1),
	1
};

static const unsigned amd64_limited_gp_rcx [] = { BIT(REG_GP_RCX) };
static const arch_register_req_t amd64_requirement_rcx = {
	arch_register_req_type_limited,
	&amd64_reg_classes[CLASS_amd64_gp],
	amd64_limited_gp_rcx,
	0,
	0,
	1
};

96
97
98
99
100
101
102
103
104
105
static const unsigned amd64_limited_gp_rax [] = { BIT(REG_GP_RAX) };
static const arch_register_req_t amd64_requirement_rax = {
	arch_register_req_type_limited,
	&amd64_reg_classes[CLASS_amd64_gp],
	amd64_limited_gp_rax,
	0,
	0,
	1
};

106
107
108
109
110
111
112
113
114
115
static const unsigned amd64_limited_gp_rdx [] = { BIT(REG_GP_RDX) };
static const arch_register_req_t amd64_requirement_rdx = {
	arch_register_req_type_limited,
	&amd64_reg_classes[CLASS_amd64_gp],
	amd64_limited_gp_rdx,
	0,
	0,
	1
};

Matthias Braun's avatar
Matthias Braun committed
116
117
118
119
120
121
static const arch_register_req_t *mem_reqs[] = {
	&arch_no_requirement,
};

static const arch_register_req_t *reg_mem_reqs[] = {
	&amd64_requirement_gp,
Matthias Braun's avatar
Matthias Braun committed
122
123
124
	&arch_no_requirement,
};

Matthias Braun's avatar
Matthias Braun committed
125
126
static const arch_register_req_t *reg_reg_mem_reqs[] = {
	&amd64_requirement_gp,
Matthias Braun's avatar
Matthias Braun committed
127
128
129
130
	&amd64_requirement_gp,
	&arch_no_requirement,
};

Matthias Braun's avatar
Matthias Braun committed
131
132
static const arch_register_req_t *reg_reg_reg_mem_reqs[] = {
	&amd64_requirement_gp,
Matthias Braun's avatar
Matthias Braun committed
133
134
135
136
137
	&amd64_requirement_gp,
	&amd64_requirement_gp,
	&arch_no_requirement,
};

Matthias Braun's avatar
Matthias Braun committed
138
139
static const arch_register_req_t *reg_reg_reqs[] = {
	&amd64_requirement_gp,
140
141
142
	&amd64_requirement_gp,
};

143
144
145
146
147
static const arch_register_req_t *rax_reg_reqs[] = {
	&amd64_requirement_rax,
	&amd64_requirement_gp,
};

148
149
150
151
152
153
static const arch_register_req_t *rax_reg_rdx_reqs[] = {
	&amd64_requirement_rax,
	&amd64_requirement_gp,
	&amd64_requirement_rdx,
};

Matthias Braun's avatar
Matthias Braun committed
154
155
156
157
158
159
160
161
162
static const arch_register_req_t *reg_reqs[] = {
	&amd64_requirement_gp,
};

static const arch_register_req_t *reg_rcx_reqs[] = {
	&amd64_requirement_gp,
	&amd64_requirement_rcx,
};

163
164
165
static const arch_register_req_t *no_reqs[] = {
};

Matthias Braun's avatar
Matthias Braun committed
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
static inline bool mode_needs_gp_reg(ir_mode *mode)
{
	return get_mode_arithmetic(mode) == irma_twos_complement;
}

static bool is_downconv(const ir_node *node)
{
	if (!is_Conv(node))
		return false;

	ir_mode *dest_mode = get_irn_mode(node);
	if (!mode_needs_gp_reg(dest_mode))
		return false;
	ir_mode *src_mode = get_irn_mode(get_Conv_op(node));
	if (!mode_needs_gp_reg(src_mode))
		return false;
	return get_mode_size_bits(dest_mode) <= get_mode_size_bits(src_mode);
}

static ir_node *skip_downconv(ir_node *node)
{
	while (is_downconv(node)) {
		if (get_irn_n_edges(node) > 1)
			break;
		node = get_Conv_op(node);
	}
	return node;
}

static bool is_sameconv(const ir_node *node)
{
	if (!is_Conv(node))
		return false;
	ir_mode *dest_mode = get_irn_mode(node);
	if (!mode_needs_gp_reg(dest_mode))
		return false;
	ir_mode *src_mode = get_irn_mode(get_Conv_op(node));
	if (!mode_needs_gp_reg(src_mode))
		return false;
	return get_mode_size_bits(dest_mode) == get_mode_size_bits(src_mode);
}

static ir_node *skip_sameconv(ir_node *node)
209
{
Matthias Braun's avatar
Matthias Braun committed
210
211
212
213
214
215
	while (is_sameconv(node)) {
		if (get_irn_n_edges(node) > 1)
			break;
		node = get_Conv_op(node);
	}
	return node;
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
static ir_node *get_reg(ir_graph *const irg, reg_info_t *const reg)
{
	if (!reg->irn) {
		/* this is already the transformed start node */
		ir_node *const start = get_irg_start(irg);
		assert(is_amd64_Start(start));
		arch_register_class_t const *const cls
			= arch_get_irn_register_req_out(start, reg->offset)->cls;
		reg->irn = new_r_Proj(start, cls ? cls->mode : mode_M, reg->offset);
	}
	return reg->irn;
}

static ir_node *get_initial_sp(ir_graph *irg)
{
	return get_reg(irg, &start_sp);
}

static ir_node *get_initial_fp(ir_graph *irg)
{
	return get_reg(irg, &start_fp);
}

static ir_node *get_initial_mem(ir_graph *irg)
{
	return get_reg(irg, &start_mem);
}

static ir_node *get_frame_base(ir_graph *irg)
{
	if (current_cconv->omit_fp) {
		return get_initial_sp(irg);
	} else {
		return get_initial_fp(irg);
	}
}
254

255
256
static ir_node *gen_Const(ir_node *node)
{
257
	ir_node  *block = be_transform_node(get_nodes_block(node));
258
	dbg_info *dbgi  = get_irn_dbg_info(node);
259
	ir_mode  *mode  = get_irn_mode(node);
260
261
262
263
264
	if (!mode_needs_gp_reg(mode))
		panic("amd64: float constant not supported yet");
	ir_tarval *tv = get_Const_tarval(node);
	uint64_t val = get_tarval_uint64(tv);
	amd64_insn_mode_t imode = val > UINT32_MAX ? INSN_MODE_64 : INSN_MODE_32;
Matthias Braun's avatar
Matthias Braun committed
265
	return new_bd_amd64_MovImm(dbgi, block, imode, val, NULL);
266
267
}

Matthias Braun's avatar
Matthias Braun committed
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
typedef enum reference_mode_t {
	REFERENCE_DIRECT,
	REFERENCE_IP_RELATIVE,
	REFERENCE_GOT,
} reference_mode_t;

static reference_mode_t need_relative_addressing(const ir_entity *entity)
{
	if (!be_options.pic)
		return REFERENCE_DIRECT;

	/* simply everything is instruction pointer relative, external functions
	 * use a global offset table */
	return entity_has_definition(entity)
	   && (get_entity_linkage(entity) & IR_LINKAGE_MERGE) == 0
	    ? REFERENCE_IP_RELATIVE : REFERENCE_GOT;
}

286
static ir_node *gen_Address(ir_node *node)
287
288
289
{
	ir_node   *block  = be_transform_node(get_nodes_block(node));
	dbg_info  *dbgi   = get_irn_dbg_info(node);
290
	ir_entity *entity = get_Address_entity(node);
291

Matthias Braun's avatar
Matthias Braun committed
292
293
	/* do we need RIP-relative addressing because of PIC? */
	reference_mode_t mode = need_relative_addressing(entity);
Matthias Braun's avatar
Matthias Braun committed
294
	if (mode == REFERENCE_DIRECT)
Matthias Braun's avatar
Matthias Braun committed
295
296
297
298
		return new_bd_amd64_MovImm(dbgi, block, INSN_MODE_64, 0, entity);

	amd64_addr_t addr;
	memset(&addr, 0, sizeof(addr));
299
	addr.base_input  = NO_INPUT;
Matthias Braun's avatar
Matthias Braun committed
300
301
	addr.index_input = NO_INPUT;
	addr.mem_input   = NO_INPUT;
Matthias Braun's avatar
Matthias Braun committed
302
303

	if (mode == REFERENCE_IP_RELATIVE) {
Matthias Braun's avatar
Matthias Braun committed
304
305
		addr.immediate.entity = entity;
		return new_bd_amd64_Lea(dbgi, block, 0, NULL, INSN_MODE_64, addr);
Matthias Braun's avatar
Matthias Braun committed
306
307
	} else {
		assert(mode == REFERENCE_GOT);
Matthias Braun's avatar
Matthias Braun committed
308
		addr.immediate.entity = new_got_entry_entity(entity);
309
310
		ir_node *load = new_bd_amd64_Mov(dbgi, block, 0, NULL, INSN_MODE_64,
										 AMD64_OP_ADDR, addr);
Matthias Braun's avatar
Matthias Braun committed
311
		return new_r_Proj(load, mode_gp, pn_amd64_Mov_res);
Matthias Braun's avatar
Matthias Braun committed
312
313
314
	}
}

Tobias Rapp's avatar
Tobias Rapp committed
315
316
317
318
319
320
321
322
static ir_node *create_IncSP(const arch_register_t *sp_reg, ir_node *block,
                             ir_node *old_sp, int offset, int align)
{
	ir_node *res = be_new_IncSP(sp_reg, block, old_sp, offset, align);
	arch_add_irn_flags(res, arch_irn_flag_modify_flags);
	return res;
}

Matthias Braun's avatar
Matthias Braun committed
323
typedef ir_node *(*construct_binop_func)(dbg_info *dbgi, ir_node *block,
Matthias Braun's avatar
Matthias Braun committed
324
	int arity, ir_node *in[], const amd64_binop_addr_attr_t *attr_init);
Matthias Braun's avatar
Matthias Braun committed
325

326
327
328
329
typedef ir_node *(*construct_rax_binop_func)(dbg_info *dbgi, ir_node *block,
	int arity, ir_node *in[], amd64_insn_mode_t insn_mode,
	amd64_op_mode_t op_mode, amd64_addr_t addr);

Matthias Braun's avatar
Matthias Braun committed
330
331
332
333
334
335
336
337
typedef enum match_flags_t {
	match_am           = 1 << 0,
	match_mode_neutral = 1 << 1,
	match_immediate    = 1 << 2,
	match_commutative  = 1 << 3,
} match_flags_t;

typedef struct amd64_args_t {
Matthias Braun's avatar
Matthias Braun committed
338
339
340
341
	amd64_binop_addr_attr_t     attr;
	ir_node                    *mem_proj;
	ir_node                    *in[4];
	int                         arity;
Matthias Braun's avatar
Matthias Braun committed
342
343
344
345
346
347
348
349
350
351
352
353
354
355
	const arch_register_req_t **reqs;
} amd64_args_t;

static amd64_insn_mode_t get_insn_mode_from_mode(const ir_mode *mode)
{
	switch (get_mode_size_bits(mode)) {
	case  8: return INSN_MODE_8;
	case 16: return INSN_MODE_16;
	case 32: return INSN_MODE_32;
	case 64: return INSN_MODE_64;
	}
	panic("unexpected mode");
}

Matthias Braun's avatar
Matthias Braun committed
356
static bool match_immediate_32(amd64_imm32_t *imm, const ir_node *op,
357
358
                               bool can_match_ip_relative,
                               bool upper32_dont_care)
Matthias Braun's avatar
Matthias Braun committed
359
360
{
	assert(mode_needs_gp_reg(get_irn_mode(op)));
Matthias Braun's avatar
Matthias Braun committed
361
	assert(imm->offset == 0 && imm->entity == NULL);
Matthias Braun's avatar
Matthias Braun committed
362
363
364
365
366
367
368
369
	if (is_Const(op)) {
		ir_tarval *tv = get_Const_tarval(op);
		if (!tarval_is_long(tv))
			return false;
		long    lval = get_tarval_long(tv);
		int32_t val  = (int32_t)lval;
		if ((long)val != lval)
			return false;
370
371
372
373
374
		/** the immediate value is signed extended to 64bit, sometimes
		 * this is not what we want. */
		if (!upper32_dont_care && val < 0
		    && !mode_is_signed(get_tarval_mode(tv)))
		    return false;
Matthias Braun's avatar
Matthias Braun committed
375
376
377
378
379
380
		imm->offset = val;
		return true;
	} else if (can_match_ip_relative && is_Address(op)) {
		/* TODO: check if entity is in lower 4GB address space/relative */
		ir_entity *entity = get_Address_entity(op);
		imm->entity = entity;
Matthias Braun's avatar
Matthias Braun committed
381
382
		return true;
	}
Matthias Braun's avatar
Matthias Braun committed
383
	/* TODO: SymConst, Add(SymConst, Const) ... */
Matthias Braun's avatar
Matthias Braun committed
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
	return false;
}

static ir_heights_t *heights;

static bool source_am_possible(ir_node *block, ir_node *node, ir_node *other)
{
	if (!is_Proj(node))
		return false;
	ir_node *load = get_Proj_pred(node);
	if (!is_Load(load))
		return false;
	assert(get_Proj_proj(node) == pn_Load_res);
	if (get_nodes_block(load) != block)
		return false;
	/* make sure we are the only user */
	if (get_irn_n_edges(node) != 1)
		return false;
	/* ia32 backend claims this can happen, use an assert for now and see
	 * if we hit it :) */
	assert(!be_is_transformed(node));
	/* make sure the other input does not depend on the load */
Matthias Braun's avatar
Matthias Braun committed
406
	if (other != NULL && get_nodes_block(other) == block
Matthias Braun's avatar
Matthias Braun committed
407
408
409
410
411
412
413
414
415
416
417
418
419
420
	    && heights_reachable_in_block(heights, other, load))
		return false;

	return true;
}

static bool needs_extension(ir_node *op)
{
	ir_mode *mode = get_irn_mode(op);
	if (get_mode_size_bits(mode) >= 32)
		return false;
	return !be_upper_bits_clean(op, mode);
}

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
static ir_node *create_sext(ir_node *const node, ir_mode *mode)
{
	amd64_insn_mode_t insn_mode = get_insn_mode_from_mode(mode);
	dbg_info *const   dbgi      = get_irn_dbg_info(node);
	ir_node  *const   block     = get_nodes_block(node);

	amd64_shift_attr_t attr;
	memset(&attr, 0, sizeof(attr));
	attr.base.op_mode = AMD64_OP_SHIFT_IMM;
	attr.insn_mode    = insn_mode;
	attr.immediate    = get_mode_size_bits(mode) - 1;
	ir_node *in[1]    = { node };
	ir_node *sext     = new_bd_amd64_Sar(dbgi, block, ARRAY_SIZE(in), in, &attr);

	arch_set_irn_register_reqs_in(sext, reg_reqs);
	arch_set_irn_register_req_out(sext, 0, &amd64_requirement_gp_same_0);

	return sext;
}

static ir_node *create_zext(ir_node *const node)
{
	dbg_info *const dbgi  = get_irn_dbg_info(node);
	ir_node  *const block = get_nodes_block(node);
	ir_node  *const zero  = new_bd_amd64_Xor0(dbgi, block);

	arch_set_irn_register_reqs_in(zero, reg_reqs);
	return zero;
}

451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
static bool use_address_matching(match_flags_t flags, ir_node *block,
                                 ir_node *op1, ir_node *op2,
                                 ir_node **out_load, ir_node **out_op)
{
	bool flags_match = flags & match_am;

	if (flags_match && source_am_possible(block, op2, op1)) {
		(*out_load) = get_Proj_pred(op2);
		(*out_op)   = op1;
		return true;
	} else if (flags_match && (flags & match_commutative)
               && source_am_possible(block, op1, op2)) {
		(*out_load) = get_Proj_pred(op1);
		(*out_op)   = op2;
		return true;
	}
	return false;
}

470
471
static void perform_address_matching(ir_node *ptr, int *arity,
                                     ir_node **in, amd64_addr_t *addr)
472
473
474
475
{
	x86_address_t maddr;
	memset(&maddr, 0, sizeof(maddr));

476
	x86_create_address_mode(&maddr, ptr, x86_create_am_normal);
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
	assert(maddr.frame_entity == NULL);

	if (maddr.base != NULL) {
		int base_input   = (*arity)++;
		addr->base_input = base_input;
		in[base_input]   = be_transform_node(maddr.base);
	} else {
		addr->base_input = NO_INPUT;
	}
	if (maddr.index != NULL) {
		int index_input = (*arity)++;
		addr->index_input = index_input;
		in[index_input]  = be_transform_node(maddr.index);
	} else {
		addr->index_input = NO_INPUT;
	}
	addr->immediate.entity = maddr.entity;
	addr->immediate.offset = maddr.offset;
	addr->log_scale        = maddr.scale;
}

Matthias Braun's avatar
Matthias Braun committed
498
499
500
static void match_binop(amd64_args_t *args, ir_node *block,
                        ir_mode *mode, ir_node *op1, ir_node *op2,
                        match_flags_t flags)
Matthias Braun's avatar
Matthias Braun committed
501
502
503
{
	memset(args, 0, sizeof(*args));

504
	bool use_am;
Matthias Braun's avatar
Matthias Braun committed
505
	bool use_immediate = flags & match_immediate;
506
	bool mode_neutral  = flags & match_mode_neutral;
Matthias Braun's avatar
Matthias Braun committed
507
508
509
510

	unsigned mode_bits = get_mode_size_bits(mode);
	if (mode_bits == 8 || mode_bits == 16)
		use_am = false;
Matthias Braun's avatar
Matthias Braun committed
511
	args->attr.base.insn_mode = get_insn_mode_from_mode(mode);
Matthias Braun's avatar
Matthias Braun committed
512
513

	/* TODO: legalize phase */
514
	if (mode_neutral) {
Matthias Braun's avatar
Matthias Braun committed
515
516
517
518
519
520
521
522
523
		op1 = skip_downconv(op1);
		op2 = skip_downconv(op2);
	} else {
		/* TODO: extend inputs? */
		(void)needs_extension;
	}

	ir_node *load;
	ir_node *op;
524
525
526

	use_am = use_address_matching(flags, block, op1, op2, &load, &op);

527
528
	if (use_immediate
	    && match_immediate_32(&args->attr.u.immediate, op2, false, mode_neutral)) {
Matthias Braun's avatar
Matthias Braun committed
529
		/* fine, we found an immediate */
Matthias Braun's avatar
Matthias Braun committed
530
531
532
		args->attr.base.base.op_mode = AMD64_OP_REG_IMM;
		args->in[args->arity++]      = be_transform_node(op1);
		args->reqs                   = reg_reqs;
533
	} else if (use_am) {
Matthias Braun's avatar
Matthias Braun committed
534
535
536
537
		ir_node *new_op        = be_transform_node(op);
		int      reg_input     = args->arity++;
		args->attr.u.reg_input = reg_input;
		args->in[reg_input]    = new_op;
538
		amd64_addr_t *addr     = &args->attr.base.addr;
Matthias Braun's avatar
Matthias Braun committed
539

540
541
542
543
544
545
546
547
548
549
550
551
552
		ir_node *ptr = get_Load_ptr(load);
		perform_address_matching(ptr, &(args->arity), args->in, addr);

		args->reqs = reg_mem_reqs;
		if (addr->base_input != NO_INPUT && addr->index_input != NO_INPUT) {
			args->reqs = reg_reg_reg_mem_reqs;
		} else if(addr->base_input != NO_INPUT || addr->index_input != NO_INPUT) {
			args->reqs = reg_reg_mem_reqs;
		}
		ir_node *new_mem    = be_transform_node(get_Load_mem(load));
		int mem_input       = args->arity++;
		args->in[mem_input] = new_mem;
		addr->mem_input     = mem_input;
553
554
555

		args->mem_proj               = be_get_Proj_for_pn(load, pn_Load_M);
		args->attr.base.base.op_mode = AMD64_OP_ADDR_REG;
Matthias Braun's avatar
Matthias Braun committed
556
557
558
559
560
	} else {
		/* simply transform the arguments */
		args->in[args->arity++] = be_transform_node(op1);
		args->in[args->arity++] = be_transform_node(op2);
		args->reqs              = reg_reg_reqs;
Matthias Braun's avatar
Matthias Braun committed
561
		args->attr.base.base.op_mode = AMD64_OP_REG_REG;
Matthias Braun's avatar
Matthias Braun committed
562
563
564
565
566
567
568
569
570
	}
}

static ir_node *gen_binop_am(ir_node *node, ir_node *op1, ir_node *op2,
                             construct_binop_func func, match_flags_t flags)
{
	ir_node *block = get_nodes_block(node);
	ir_mode *mode  = get_irn_mode(node);
	amd64_args_t args;
Matthias Braun's avatar
Matthias Braun committed
571
	match_binop(&args, block, mode, op1, op2, flags);
Matthias Braun's avatar
Matthias Braun committed
572
573
574
575

	dbg_info *const dbgi      = get_irn_dbg_info(node);
	ir_node  *const new_block = be_transform_node(block);

Matthias Braun's avatar
Matthias Braun committed
576
	ir_node *new_node = func(dbgi, new_block, args.arity, args.in, &args.attr);
Matthias Braun's avatar
Matthias Braun committed
577
578
579
580
581
582
583
584
585
586
587
	arch_set_irn_register_reqs_in(new_node, args.reqs);
	arch_set_irn_register_req_out(new_node, 0, &amd64_requirement_gp_same_0);

	if (args.mem_proj != NULL) {
		ir_node *load = get_Proj_pred(args.mem_proj);
		be_set_transformed_node(load, new_node);
	}

	return new_r_Proj(new_node, mode_gp, pn_amd64_Sub_res);
}

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
628
629
630
631
/* Transform arguments for a binop using RAX and register as input */
static void gen_binop_rax_reg(ir_node *op1, ir_node *op2, ir_node **in,
                              int *arity, amd64_op_mode_t *op_mode,
                              const arch_register_req_t ***reqs)
{
	in[(*arity)++] = be_transform_node(op1);
	in[(*arity)++] = be_transform_node(op2);
	*reqs          = rax_reg_reqs;
	*op_mode       = AMD64_OP_RAX_REG;
}

static ir_node *gen_binop_rax(ir_node *node, ir_node *op1, ir_node *op2,
                              construct_rax_binop_func make_node,
                              match_flags_t flags)
{
	bool use_am;
	bool mode_neutral  = flags & match_mode_neutral;
	assert(! (flags & match_immediate));

	ir_mode *mode = get_irn_mode(op1);

	unsigned mode_bits = get_mode_size_bits(mode);
	amd64_insn_mode_t insn_mode = get_insn_mode_from_mode(mode);

	/* TODO: legalize phase */
	if (mode_neutral) {
		op1 = skip_downconv(op1);
		op2 = skip_downconv(op2);
	} else {
		/* TODO: extend inputs? */
		(void)needs_extension;
	}

	ir_node *load;
	ir_node *op;
	ir_node *block = get_nodes_block(node);
	ir_node *in[4];
	int      arity = 0;
	const arch_register_req_t **reqs;
	amd64_op_mode_t op_mode;
	amd64_addr_t    addr;
	memset(&addr, 0, sizeof(addr));

	use_am = use_address_matching(flags, block, op1, op2, &load, &op);
632
633
634
	if (mode_bits == 8 || mode_bits == 16)
		use_am = false;

635
	ir_node *mem_proj = NULL;
636
637
638
639
640
	if (use_am) {
		ir_node *new_op    = be_transform_node(op);
		int      reg_input = arity++;
		in[reg_input]      = new_op;

641
642
643
644
645
646
647
648
649
650
651
652
653
654
		ir_node *ptr = get_Load_ptr(load);
		perform_address_matching(ptr, &arity, in, &addr);

		reqs = reg_mem_reqs;
		if (addr.base_input != NO_INPUT && addr.index_input != NO_INPUT) {
			reqs = reg_reg_reg_mem_reqs;
		} else if(addr.base_input != NO_INPUT || addr.index_input != NO_INPUT) {
			reqs = reg_reg_mem_reqs;
		}

		ir_node *new_mem = be_transform_node(get_Load_mem(load));
		int mem_input    = arity++;
		in[mem_input]    = new_mem;
		addr.mem_input   = mem_input;
655
656
657
658
659
660
661
662

		mem_proj                = be_get_Proj_for_pn(load, pn_Load_M);
		op_mode                 = AMD64_OP_RAX_ADDR;
	} else {
		/* simply transform the arguments */
		gen_binop_rax_reg(op1, op2, in, &arity, &op_mode, &reqs);
	}

663
	assert((size_t)arity <= ARRAY_SIZE(in));
664
665
666
667
668
	dbg_info *dbgi      = get_irn_dbg_info(node);
	ir_node  *new_block = be_transform_node(block);
	ir_node  *new_node  = make_node(dbgi, new_block, arity, in, insn_mode,
	                                op_mode, addr);
	arch_set_irn_register_reqs_in(new_node, reqs);
669
670
671
	if (mem_proj != NULL) {
		be_set_transformed_node(load, new_node);
	}
672
673
674
	return new_node;
}

Matthias Braun's avatar
Matthias Braun committed
675
typedef ir_node *(*construct_shift_func)(dbg_info *dbgi, ir_node *block,
Matthias Braun's avatar
Matthias Braun committed
676
	int arity, ir_node *in[], const amd64_shift_attr_t *attr_init);
Matthias Braun's avatar
Matthias Braun committed
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691

static ir_node *gen_shift_binop(ir_node *node, ir_node *op1, ir_node *op2,
                                construct_shift_func func, match_flags_t flags)
{
	ir_mode *mode = get_irn_mode(node);
	assert(!mode_is_float(mode));

	if (get_mode_modulo_shift(mode) != 32 && get_mode_size_bits(mode) != 64)
		panic("insupported modulo shift used");

	ir_node *in[3];
	int      arity = 0;
	if (flags & match_mode_neutral) {
		op1 = skip_downconv(op1);
		in[arity++] = be_transform_node(op1);
Matthias Braun's avatar
Matthias Braun committed
692
		mode = get_mode_size_bits(mode) > 32 ? mode_gp : mode_Iu;
Matthias Braun's avatar
Matthias Braun committed
693
694
	} else {
		op1 = skip_sameconv(op1);
695
696
697

		/* Use 8/16bit operations instead of doing zext/upconv */
		in[arity++] = be_transform_node(op1);
Matthias Braun's avatar
Matthias Braun committed
698
699
700
701
702
703
704
705
706
707
708
	}

	/* we can skip any convs for the shift count, as it only uses the lowest
	 * 5/6 bits anyway */
	while (is_Conv(op2) && get_irn_n_edges(op2) == 1) {
		ir_node *const op = get_Conv_op(op2);
		if (mode_is_float(get_irn_mode(op)))
			break;
		op2 = op;
	}

Matthias Braun's avatar
Matthias Braun committed
709
710
	amd64_shift_attr_t attr;
	memset(&attr, 0, sizeof(attr));
Matthias Braun's avatar
Matthias Braun committed
711
712
713
	const arch_register_req_t **reqs;
	const arch_register_req_t  *out_req0;
	if (is_Const(op2)) {
Matthias Braun's avatar
Matthias Braun committed
714
715
716
717
		attr.base.op_mode = AMD64_OP_SHIFT_IMM;
		reqs              = reg_reqs;
		out_req0          = &amd64_requirement_gp_same_0;
		attr.immediate    = get_tarval_long(get_Const_tarval(op2));
Matthias Braun's avatar
Matthias Braun committed
718
	} else {
Matthias Braun's avatar
Matthias Braun committed
719
720
721
722
		attr.base.op_mode = AMD64_OP_SHIFT_REG;
		in[arity++]       = be_transform_node(op2);
		reqs              = reg_rcx_reqs;
		out_req0          = &amd64_requirement_gp_same_0_not_1;
Matthias Braun's avatar
Matthias Braun committed
723
	}
Matthias Braun's avatar
Matthias Braun committed
724
	attr.insn_mode = get_insn_mode_from_mode(mode);
Matthias Braun's avatar
Matthias Braun committed
725

Matthias Braun's avatar
Matthias Braun committed
726
727
728
729
	ir_node  *const block     = get_nodes_block(node);
	dbg_info *const dbgi      = get_irn_dbg_info(node);
	ir_node  *const new_block = be_transform_node(block);
	ir_node  *const new_node  = func(dbgi, new_block, arity, in, &attr);
Matthias Braun's avatar
Matthias Braun committed
730
731
732
	arch_set_irn_register_reqs_in(new_node, reqs);
	arch_set_irn_register_req_out(new_node, 0, out_req0);
	return new_node;
733
734
}

Matthias Braun's avatar
Matthias Braun committed
735
736
737
738
739
740
741
742
743
744
static ir_node *gen_Add(ir_node *const node)
{
	ir_node *op1 = get_Add_left(node);
	ir_node *op2 = get_Add_right(node);
	ir_node *res = gen_binop_am(node, op1, op2, new_bd_amd64_Add,
	                            match_immediate | match_am | match_mode_neutral
	                            | match_commutative);
	x86_mark_non_am(node);
	return res;
}
745

Matthias Braun's avatar
Matthias Braun committed
746
static ir_node *gen_Sub(ir_node *const node)
747
{
Matthias Braun's avatar
Matthias Braun committed
748
	/* do not match AM yet until we have a sub->neg+add rule in amd64_finish */
749
750
	dbg_info *const dbgi    = get_irn_dbg_info(node);
	ir_node  *const block   = be_transform_node(get_nodes_block(node));
Matthias Braun's avatar
Matthias Braun committed
751
752
	ir_node  *const op1     = get_Sub_left(node);
	ir_node  *const op2     = get_Sub_right(node);
753
754
	ir_node  *const new_op1 = be_transform_node(op1);
	ir_node  *const new_op2 = be_transform_node(op2);
755
	ir_mode  *const mode    = get_irn_mode(node);
Matthias Braun's avatar
Matthias Braun committed
756
757
758
759
760
761
762
763
764
	ir_node *in[2] = { new_op1, new_op2 };
	amd64_binop_addr_attr_t attr;
	memset(&attr, 0, sizeof(attr));
	attr.base.base.op_mode = AMD64_OP_REG_REG;
	attr.base.insn_mode    = get_insn_mode_from_mode(mode);
	ir_node *res = new_bd_amd64_Sub(dbgi, block, ARRAY_SIZE(in), in, &attr);
	arch_set_irn_register_reqs_in(res, reg_reg_reqs);
	arch_set_irn_register_req_out(res, 0, &amd64_requirement_gp_same_0);
	return new_r_Proj(res, mode_gp, pn_amd64_Sub_res);
Matthias Braun's avatar
Matthias Braun committed
765
766
767
768
769
770
771
772
773
}

static ir_node *gen_And(ir_node *const node)
{
	ir_node *op1 = get_And_left(node);
	ir_node *op2 = get_And_right(node);
	return gen_binop_am(node, op1, op2, new_bd_amd64_And,
	                    match_immediate | match_am | match_mode_neutral
	                    | match_commutative);
774
775
}

Matthias Braun's avatar
Matthias Braun committed
776
777
778
779
780
781
782
783
784
785
786
787
788
static ir_node *gen_Eor(ir_node *const node)
{
	ir_node *op1 = get_Eor_left(node);
	ir_node *op2 = get_Eor_right(node);
	return gen_binop_am(node, op1, op2, new_bd_amd64_Xor,
	                    match_immediate | match_am | match_mode_neutral
	                    | match_commutative);
}

static ir_node *gen_Or(ir_node *const node)
{
	ir_node *op1 = get_Or_left(node);
	ir_node *op2 = get_Or_right(node);
789
	return gen_binop_am(node, op1, op2, new_bd_amd64_Or,
Matthias Braun's avatar
Matthias Braun committed
790
791
792
793
794
795
	                    match_immediate | match_am | match_mode_neutral
	                    | match_commutative);
}

static ir_node *gen_Mul(ir_node *const node)
{
796
797
798
799
800
801
802
	ir_node *op1  = get_Mul_left(node);
	ir_node *op2  = get_Mul_right(node);
	ir_mode *mode = get_irn_mode(node);

	if (get_mode_size_bits(mode) < 16) {
		/* imulb only supports rax - reg form */
		ir_node *new_node =
Tobias Rapp's avatar
Tobias Rapp committed
803
804
805
		            gen_binop_rax(node, op1, op2, new_bd_amd64_IMul1Op,
		                          match_mode_neutral
		                          | match_commutative);
806
807
808
		return new_r_Proj(new_node, mode_gp, pn_amd64_IMul1Op_res_low);
	} else {
		return gen_binop_am(node, op1, op2, new_bd_amd64_IMul,
Tobias Rapp's avatar
Tobias Rapp committed
809
810
		                    match_immediate | match_am
		                    | match_mode_neutral | match_commutative);
811
	}
Matthias Braun's avatar
Matthias Braun committed
812
813
}

814
815
static ir_node *gen_Mulh(ir_node *const node)
{
816
817
818
819
820
821
822
823
824
	ir_node *op1  = get_Mulh_left(node);
	ir_node *op2  = get_Mulh_right(node);
	ir_mode *mode = get_irn_mode(op1);
	ir_node *new_node;

	if(mode_is_signed(mode)) {
		new_node = gen_binop_rax(node, op1, op2, new_bd_amd64_IMul1Op,
                        /* match_am TODO */
                        match_mode_neutral | match_commutative);
Tobias Rapp's avatar
Tobias Rapp committed
825
		return new_r_Proj(new_node, mode_gp, pn_amd64_IMul1Op_res_high);
826
827
	} else {
		new_node = gen_binop_rax(node, op1, op2, new_bd_amd64_Mul,
828
829
                         /* match_am TODO */
                         match_mode_neutral | match_commutative);
830
831
		return new_r_Proj(new_node, mode_gp, pn_amd64_Mul_res_high);
	}
832
833
}

Matthias Braun's avatar
Matthias Braun committed
834
835
836
837
838
static ir_node *gen_Shl(ir_node *const node)
{
	ir_node *op1 = get_Shl_left(node);
	ir_node *op2 = get_Shl_right(node);
	return gen_shift_binop(node, op1, op2, new_bd_amd64_Shl,
Matthias Braun's avatar
Matthias Braun committed
839
	                       match_immediate | match_mode_neutral);
Matthias Braun's avatar
Matthias Braun committed
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
}

static ir_node *gen_Shr(ir_node *const node)
{
	ir_node *op1 = get_Shr_left(node);
	ir_node *op2 = get_Shr_right(node);
	return gen_shift_binop(node, op1, op2, new_bd_amd64_Shr,
	                       match_immediate);
}

static ir_node *gen_Shrs(ir_node *const node)
{
	ir_node *op1 = get_Shrs_left(node);
	ir_node *op2 = get_Shrs_right(node);
	return gen_shift_binop(node, op1, op2, new_bd_amd64_Sar,
	                       match_immediate);
}
Robin Redeker's avatar
Robin Redeker committed
857

Matthias Braun's avatar
Matthias Braun committed
858
static ir_node *create_div(ir_node *const node, ir_mode *const mode,
859
                           ir_node *const op1, ir_node *const op2)
Matthias Braun's avatar
Matthias Braun committed
860
861
862
863
864
{
	dbg_info *const dbgi    = get_irn_dbg_info(node);
	ir_node  *const block   = be_transform_node(get_nodes_block(node));
	amd64_insn_mode_t insn_mode
		= get_mode_size_bits(mode) > 32 ? INSN_MODE_64 : INSN_MODE_32;
865

Matthias Braun's avatar
Matthias Braun committed
866
	ir_node *res;
867
868
869
	ir_node *in[3];
	int      arity = 0;
	const arch_register_req_t **reqs;
Tobias Rapp's avatar
Tobias Rapp committed
870

871
	amd64_op_mode_t op_mode;
Tobias Rapp's avatar
Tobias Rapp committed
872
873
874
875
876
	amd64_addr_t    addr;
	memset(&addr, 0, sizeof(addr));

	gen_binop_rax_reg(op1, op2, in, &arity, &op_mode, &reqs);
	reqs = rax_reg_rdx_reqs;
877

Matthias Braun's avatar
Matthias Braun committed
878
	if (mode_is_signed(mode)) {
879
		/* Sign extend RAX to RDX */
880
		in[arity++] = create_sext(be_transform_node(op1), mode);
Matthias Braun's avatar
Matthias Braun committed
881

882
883
		res = new_bd_amd64_IDiv(dbgi, block, arity, in, insn_mode,
                                op_mode, addr);
Matthias Braun's avatar
Matthias Braun committed
884
	} else {
885
886
		/* Zero extend to register RDX */
		in[arity++] = create_zext(node);
887

888
889
		res = new_bd_amd64_Div(dbgi, block, arity, in, insn_mode,
                               op_mode, addr);
Matthias Braun's avatar
Matthias Braun committed
890
	}
891
892

	arch_set_irn_register_reqs_in(res, reqs);
Matthias Braun's avatar
Matthias Braun committed
893
894
895
896
897
898
899
900
901
902
	return res;
}

static ir_node *gen_Div(ir_node *const node)
{
	ir_mode *const mode = get_Div_resmode(node);
	if (!mode_needs_gp_reg(mode))
		panic("amd64: float div NIY");
	ir_node *const op1 = get_Div_left(node);
	ir_node *const op2 = get_Div_right(node);
903
	return create_div(node, mode, op1, op2);
Matthias Braun's avatar
Matthias Braun committed
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
}

static ir_node *gen_Proj_Div(ir_node *const node)
{
	ir_node *pred     = get_Proj_pred(node);
	ir_node *new_pred = be_transform_node(pred);
	long     pn       = get_Proj_proj(node);

	assert((long)pn_amd64_Div_M == (long)pn_amd64_IDiv_M);
	assert((long)pn_amd64_Div_res_div == (long)pn_amd64_IDiv_res_div);
	switch((pn_Div)pn) {
	case pn_Div_M:
		return new_r_Proj(new_pred, mode_M, pn_amd64_Div_M);
	case pn_Div_res:
		return new_r_Proj(new_pred, mode_gp, pn_amd64_Div_res_div);
	case pn_Div_X_except:
	case pn_Div_X_regular:
		panic("amd64 exception NIY");
	}
	panic("invalid Div Proj");
}

static ir_node *gen_Mod(ir_node *const node)
{
	ir_mode *const mode = get_Mod_resmode(node);
	ir_node *const op1  = get_Mod_left(node);
	ir_node *const op2  = get_Mod_right(node);
	assert(mode_needs_gp_reg(mode));
932
	return create_div(node, mode, op1, op2);
Matthias Braun's avatar
Matthias Braun committed
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
}

static ir_node *gen_Proj_Mod(ir_node *const node)
{
	ir_node *pred     = get_Proj_pred(node);
	ir_node *new_pred = be_transform_node(pred);
	long     pn       = get_Proj_proj(node);

	assert((long)pn_amd64_Div_M == (long)pn_amd64_IDiv_M);
	assert((long)pn_amd64_Div_res_mod == (long)pn_amd64_IDiv_res_mod);
	switch((pn_Mod)pn) {
	case pn_Mod_M:
		return new_r_Proj(new_pred, mode_M, pn_amd64_Div_M);
	case pn_Mod_res:
		return new_r_Proj(new_pred, mode_gp, pn_amd64_Div_res_mod);
	case pn_Mod_X_except:
	case pn_Mod_X_regular:
		panic("amd64 exception NIY");
	}
	panic("invalid Mod Proj");
}

Matthias Braun's avatar
Matthias Braun committed
955
956
957
typedef ir_node* (*unop_constructor)(dbg_info*,ir_node*block,ir_node*op,amd64_insn_mode_t insn_mode);

static ir_node *gen_unop(ir_node *const node, int op_pos, unop_constructor gen)
958
{
959
960
	dbg_info *const dbgi   = get_irn_dbg_info(node);
	ir_node  *const block  = be_transform_node(get_nodes_block(node));
961
	ir_node  *const op     = get_irn_n(node, op_pos);
962
	ir_node  *const new_op = be_transform_node(op);
Matthias Braun's avatar
Matthias Braun committed
963
	ir_mode  *const mode   = get_irn_mode(node);
964

Matthias Braun's avatar
Matthias Braun committed
965
966
967
	amd64_insn_mode_t insn_mode
		= get_mode_size_bits(mode) > 32 ? INSN_MODE_64 : INSN_MODE_32;
	return gen(dbgi, block, new_op, insn_mode);
968
969
}

970
971
972
973
static ir_node *gen_Minus(ir_node *const node)
{
	return gen_unop(node, n_Minus_op, &new_bd_amd64_Neg);
}
Matthias Braun's avatar
Matthias Braun committed
974
static ir_node *gen_Not(ir_node *const node)
975
976
977
{
	return gen_unop(node, n_Not_op, &new_bd_amd64_Not);
}
978

979
980
static ir_node *gen_Sel(ir_node *const node)
{
981
982
983
984
985
986
987
	ir_node   *block     = get_nodes_block(node);
	ir_node   *new_block = be_transform_node(block);
	dbg_info  *dbgi      = get_irn_dbg_info(node);
	ir_node   *ptr       = get_Sel_ptr(node);
	ir_graph  *irg       = get_irn_irg(node);
	ir_node   *base      = get_frame_base(irg);
	ir_entity *entity    = get_Sel_entity(node);
988
989
990
991
	if (!is_Proj(ptr) || !is_Start(get_Proj_pred(ptr)))
		panic("Sel not lowered");
	if (get_Sel_n_indexs(node) > 0)
		panic("array Sel not lowered %+F", node);
992
993
994
	if (is_parameter_entity(entity) &&
	    get_entity_parameter_number(entity) == IR_VA_START_PARAMETER_NUMBER)
	    panic("va_start NIY");
Matthias Braun's avatar
Matthias Braun committed
995
996
997
998
	amd64_addr_t addr;
	memset(&addr, 0, sizeof(addr));
	addr.base_input  = 0;
	addr.index_input = NO_INPUT;
999
	addr.immediate.entity = entity;
1000
1001
	ir_node *in[] = { base };
	ir_node *res = new_bd_amd64_Lea(dbgi, new_block, ARRAY_SIZE(in), in,
Matthias Braun's avatar
Matthias Braun committed
1002
	                                INSN_MODE_64, addr);
Matthias Braun's avatar
Matthias Braun committed
1003
	arch_set_irn_register_reqs_in(res, reg_reqs);
1004
	return res;
1005
1006
}

1007
1008
static ir_node *gen_IJmp(ir_node *node)
{
1009
1010
1011
1012
	dbg_info *dbgi      = get_irn_dbg_info(node);
	ir_node  *block     = get_nodes_block(node);
	ir_node  *new_block = be_transform_node(block);
	ir_node  *op        = get_IJmp_target(node);
yb9976's avatar
yb9976 committed
1013
	assert(get_irn_mode(op) == mode_P);
1014
1015

	int arity = 0;
1016
	ir_node *in[3];
1017
1018
1019
	amd64_addr_t addr;
	memset(&addr, 0, sizeof(addr));

1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
	const arch_register_req_t **reqs;
	amd64_op_mode_t             op_mode;
	ir_node                    *mem_proj = NULL;
	if (match_immediate_32(&addr.immediate, op, true, false)) {
		// TODO: do we need a must_match_ip_relative in match_immediate_32
		op_mode = AMD64_OP_UNOP_IMM32;
		arity   = 0;
		reqs    = no_reqs;
	} else if (source_am_possible(block, op, NULL)) {
		ir_node *load     = get_Proj_pred(op);
		ir_node *load_ptr = get_Load_ptr(load);
		mem_proj          = be_get_Proj_for_pn(load, pn_Load_M);

		perform_address_matching(load_ptr, &arity, in, &addr);
		assert((size_t)arity < ARRAY_SIZE(in));

		reqs = mem_reqs;
		if (addr.base_input != NO_INPUT && addr.index_input != NO_INPUT) {
			reqs = reg_reg_mem_reqs;
		} else if(addr.base_input != NO_INPUT || addr.index_input != NO_INPUT) {
			reqs = reg_mem_reqs;
		}
		ir_node *load_mem = get_Load_mem(load);
		ir_node *new_mem  = be_transform_node(load_mem);
Tobias Rapp's avatar
Tobias Rapp committed
1044
1045
1046
		int mem_input     = arity++;
		in[mem_input]     = new_mem;
		addr.mem_input    = mem_input;
1047

1048
		op_mode = AMD64_OP_UNOP_ADDR;
1049
	} else {
1050
1051
1052
1053
1054
1055
		op_mode          = AMD64_OP_UNOP_REG;
		arity            = 1;
		in[0]            = be_transform_node(op);
		addr.base_input  = NO_INPUT;
		addr.index_input = NO_INPUT;
		reqs             = reg_reqs;
1056
1057
	}

1058
	ir_node *jmp = new_bd_amd64_IJmp(dbgi, new_block, arity, in,
1059
	                                 INSN_MODE_64, op_mode, addr);
1060
1061

	arch_set_irn_register_reqs_in(jmp, reqs);
1062
1063
1064
1065
1066
1067
1068
	if (mem_proj != NULL) {
		ir_node *load = get_Proj_pred(mem_proj);
		be_set_transformed_node(load, jmp);
	}

	ir_node *proj_X = new_r_Proj(jmp, mode_X, pn_amd64_IJmp_X);
	return proj_X;
1069
1070
}

1071
1072
1073
1074
1075
1076
1077
1078
1079
static ir_node *gen_Jmp(ir_node *node)
{
	ir_node  *block     = get_nodes_block(node);
	ir_node  *new_block = be_transform_node(block);
	dbg_info *dbgi      = get_irn_dbg_info(node);

	return new_bd_amd64_Jmp(dbgi, new_block);
}

1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
static ir_node *gen_Switch(ir_node *node)
{
	ir_graph *irg       = get_irn_irg(node);
	ir_node  *new_block = be_transform_node(get_nodes_block(node));
	ir_node  *sel       = get_Switch_selector(node);
	dbg_info *dbgi      = get_irn_dbg_info(node);
	ir_node  *new_sel   = be_transform_node(sel);
	const ir_switch_table *table  = get_Switch_table(node);
	unsigned               n_outs = get_Switch_n_outs(node);

Matthias Braun's avatar
Matthias Braun committed
1090
1091
	ir_type   *const utype  = get_unknown_type();
	ir_entity *const entity = new_entity(utype, id_unique("TBL%u"), utype);
1092
1093
1094
1095
1096
1097
1098
1099
1100
	set_entity_visibility(entity, ir_visibility_private);
	add_entity_linkage(entity, IR_LINKAGE_CONSTANT);

	table = ir_switch_table_duplicate(irg, table);

	ir_node *out = new_bd_amd64_SwitchJmp(dbgi, new_block, new_sel, n_outs, table, entity);
	return out;
}

1101
1102
1103
1104
static void make_start_out(reg_info_t *const info, struct obstack *const obst,
                           ir_node *const start, size_t const offset,
                           arch_register_t const *const reg,
                           arch_register_req_type_t const flags)
1105
{
1106
1107
1108
1109
1110
1111
1112
	info->offset = offset;
	info->irn    = NULL;
	arch_register_req_t const *const req
		= be_create_reg_req(obst, reg, arch_register_req_type_ignore | flags);
	arch_set_irn_register_req_out(start, offset, req);
	arch_set_irn_register_out(start, offset, reg);
}
1113

1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
static ir_node *gen_Start(ir_node *node)
{
	ir_graph  *irg           = get_irn_irg(node);
	ir_entity *entity        = get_irg_entity(irg);
	ir_type   *function_type = get_entity_type(entity);
	ir_node   *block         = get_nodes_block(node);
	ir_node   *new_block     = be_transform_node(block);
	dbg_info  *dbgi          = get_irn_dbg_info(node);
	struct obstack *obst     = be_get_be_obst(irg);

	amd64_cconv_t const *const cconv = current_cconv;

	/* start building list of start constraints */

	/* calculate number of outputs */
	size_t n_outs = 2; /* memory, rsp */
	if (!cconv->omit_fp)
		++n_outs; /* rbp */
	/* function parameters */
	n_outs += cconv->n_param_regs;
	size_t n_callee_saves
		= rbitset_popcount(cconv->callee_saves, N_AMD64_REGISTERS);
	n_outs += n_callee_saves;

	ir_node *start = new_bd_amd64_Start(dbgi, new_block, n_outs);

	size_t o = 0;

	/* first output is memory */
	start_mem.offset = o;
	start_mem.irn    = NULL;
	arch_set_irn_register_req_out(start, o, arch_no_register_req);
	++o;

	/* the stack pointer */
	make_start_out(&start_sp, obst, start, o++, &amd64_registers[REG_RSP],
	               arch_register_req_type_produces_sp);

	if (!cconv->omit_fp) {
		make_start_out(&start_fp, obst, start, o++, &amd64_registers[REG_RBP],
		               arch_register_req_type_none);
	}

	/* function parameters in registers */
	start_params_offset = o;
	for (size_t i = 0; i < get_method_n_params(function_type); ++i) {
		const reg_or_stackslot_t *param = &current_cconv->parameters[i];
		const arch_register_t    *reg   = param->reg;
		if (reg != NULL) {
			arch_set_irn_register_req_out(start, o, reg->single_req);
			arch_set_irn_register_out(start, o, reg);
			++o;
		}
	}

	/* callee saves */
	start_callee_saves_offset = o;
	for (size_t i = 0; i < N_AMD64_REGISTERS; ++i) {
		if (!rbitset_is_set(cconv->callee_saves, i))
			continue;
		const arch_register_t *reg = &amd64_registers[i];
		arch_set_irn_register_req_out(start, o, reg->single_req);
		arch_set_irn_register_out(start, o, reg);
		++o;
	}
	assert(n_outs == o);

	return start;
}

static ir_node *gen_Proj_Start(ir_node *node)
{
	ir_graph *irg       = get_irn_irg(node);
	ir_node  *block     = get_nodes_block(node);
	ir_node  *new_block = be_transform_node(block);
	long      pn        = get_Proj_proj(node);
	be_transform_node(get_Proj_pred(node));

	switch ((pn_Start)pn) {
	case pn_Start_X_initial_exec:
		return new_bd_amd64_Jmp(NULL, new_block);
	case pn_Start_M:
		return get_initial_mem(irg);
	case pn_Start_T_args:
		return new_r_Bad(irg, mode_T);
	case pn_Start_P_frame_base:
		return get_frame_base(irg);
	}
	panic("Unexpected Start Proj: %ld\n", pn);
}

static ir_node *get_stack_pointer_for(ir_node *node)
{
	/* get predecessor in stack_order list */
	ir_node *stack_pred = be_get_stack_pred(stackorder, node);
	if (stack_pred == NULL) {
		/* first stack user in the current block. We can simply use the
		 * initial sp_proj for it */
		ir_graph *irg = get_irn_irg(node);
		return get_initial_sp(irg);
	}

	be_transform_node(stack_pred);
	ir_node *stack = pmap_get(ir_node, node_to_stack, stack_pred);
	if (stack == NULL) {
		return get_stack_pointer_for(stack_pred);
	}

	return stack;
}

static ir_node *gen_Return(ir_node *node)
{
	ir_node  *block     = get_nodes_block(node);
	ir_graph *irg       = get_irn_irg(node);
	ir_node  *new_block = be_transform_node(block);
	dbg_info *dbgi      = get_irn_dbg_info(node);
	ir_node  *mem       = get_Return_mem(node);
	ir_node  *new_mem   = be_transform_node(mem);
	ir_node  *sp        = get_stack_pointer_for(node);
	size_t    n_res     = get_Return_n_ress(node);
	struct obstack *be_obst = be_get_be_obst(irg);
	amd64_cconv_t  *cconv   = current_cconv;

	/* estimate number of return values */
	size_t n_ins = 2 + n_res; /* memory + stackpointer, return values */
	size_t n_callee_saves
		= rbitset_popcount(cconv->callee_saves, N_AMD64_REGISTERS);
	n_ins += n_callee_saves;

	const arch_register_req_t **reqs
		= OALLOCN(be_obst, const arch_register_req_t*, n_ins);
	ir_node **in = ALLOCAN(ir_node*, n_ins);
	size_t    p  = 0;

	in[p]   = new_mem;
	reqs[p] = arch_no_register_req;
	++p;

	in[p]   = sp;
	reqs[p] = amd64_registers[REG_RSP].single_req;
	++p;

	/* result values */
	for (size_t i = 0; i < n_res; ++i) {
		ir_node                  *res_value     = get_Return_res(node, i);
		ir_node                  *new_res_value = be_transform_node(res_value);
		const reg_or_stackslot_t *slot          = &current_cconv->results[i];
		in[p]   = new_res_value;
		reqs[p] = slot->req;
		++p;
	}
	/* callee saves */
	ir_node *start = get_irg_start(irg);
	long start_pn = start_callee_saves_offset;
	for (size_t i = 0; i < N_AMD64_REGISTERS; ++i) {
		if (!rbitset_is_set(cconv->callee_saves, i))
			continue;
		const arch_register_t *reg    = &amd64_registers[i];
		ir_mode               *mode  = reg->reg_class->mode;
		ir_node               *value = new_r_Proj(start, mode, start_pn++);
		in[p]   = value;
		reqs[p] = reg->single_req;
		++p;
	}
	assert(p == n_ins);

	ir_node *returnn = new_bd_amd64_Return(dbgi, new_block, n_ins, in);
	arch_set_irn_register_reqs_in(returnn, reqs);

	return returnn;
}

static ir_node *gen_Call(ir_node *node)
{
	ir_node         *callee       = get_Call_ptr(node);
	ir_node         *block        = get_nodes_block(node);
	ir_node         *new_block    = be_transform_node(block);
	dbg_info        *dbgi         = get_irn_dbg_info(node);
	ir_node         *mem          = get_Call_mem(node);
	ir_node         *new_mem      = be_transform_node(mem);
	ir_type         *type         = get_Call_type(node);
	size_t           n_params     = get_Call_n_params(node);
	size_t           n_ress       = get_method_n_ress(type);
	/* max inputs: memory, callee, register arguments */
	ir_node        **sync_ins     = ALLOCAN(ir_node*, n_params);
	ir_graph        *irg          = get_irn_irg(node);
	struct obstack  *obst         = be_get_be_obst(irg);
	amd64_cconv_t   *cconv
		= amd64_decide_calling_convention(type, NULL);
	size_t           n_param_regs = cconv->n_param_regs;
Matthias Braun's avatar
Matthias Braun committed
1305
1306
	/* param-regs + mem + stackpointer + callee(2) + n_sse_regs */
	unsigned         max_inputs   = 5 + n_param_regs;
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
	ir_node        **in           = ALLOCAN(ir_node*, max_inputs);
	const arch_register_req_t **in_req
		= OALLOCNZ(obst, const arch_register_req_t*, max_inputs);
	int              in_arity     = 0;
	int              sync_arity   = 0;
	ir_node         *new_frame    = get_stack_pointer_for(node);

	assert(n_params == get_method_n_params(type));

	/* construct arguments */

	/* memory input */
	in_req[in_arity] = arch_no_register_req;
	int mem_pos      = in_arity;
	++in_arity;

	/* stack pointer input */
	/* construct an IncSP -> we have to always be sure that the stack is
	 * aligned even if we don't push arguments on it */
	const arch_register_t *sp_reg = &amd64_registers[REG_RSP];
Tobias Rapp's avatar
Tobias Rapp committed
1327
	ir_node *incsp = create_IncSP(sp_reg, new_block, new_frame,
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
	                              cconv->param_stack_size, 1);
	in_req[in_arity] = sp_reg->single_req;
	in[in_arity]     = incsp;
	++in_arity;

	/* vararg calls need the number of SSE registers used */
	if (get_method_variadicity(type) == variadicity_variadic) {
		ir_node *zero = new_bd_amd64_Xor0(NULL, block);
		in_req[in_arity] = amd64_registers[REG_RAX].single_req;
		in[in_arity] = zero;
		++in_arity;
	}

	/* parameters */
	for (size_t p = 0; p < n_params; ++p) {
yb9976's avatar
yb9976 committed
1343
1344
1345
		ir_node                  *value = get_Call_param(node, p);
		const reg_or_stackslot_t *param = &cconv->parameters[p];
		assert(mode_needs_gp_reg(get_type_mode(get_method_param_type(type, p))));
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356

		ir_node *new_value = be_transform_node(value);

		/* put value into registers */
		if (param->reg != NULL) {
			in[in_arity]     = new_value;
			in_req[in_arity] = param->reg->single_req;
			++in_arity;
			continue;
		}
		/* we need a store if we're here */
Matthias Braun's avatar
Matthias Braun committed
1357
1358
		amd64_binop_addr_attr_t attr;
		memset(&attr, 0, sizeof(attr));
1359
		attr.base.base.op_mode          = AMD64_OP_ADDR_REG;
1360
1361
1362
1363
		attr.base.addr.immediate.offset = param->offset;
		attr.base.addr.base_input       = 1;
		attr.base.addr.index_input      = NO_INPUT;
		attr.base.insn_mode             = INSN_MODE_64;
Matthias Braun's avatar
Matthias Braun committed
1364
1365
		ir_node *in[] = { new_value, incsp, new_mem };
		ir_node *store = new_bd_amd64_Store(dbgi, new_block, ARRAY_SIZE(in), in,
Matthias Braun's avatar
Matthias Braun committed
1366
		                                    &attr);
1367
		arch_set_irn_register_reqs_in(store, reg_reg_mem_reqs);
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
		set_irn_pinned(store, op_pin_state_floats);
		sync_ins[sync_arity++] = store;
	}

	/* construct memory input */
	if (sync_arity == 0) {
		in[mem_pos] = new_mem;
	} else if (sync_arity == 1) {
		in[mem_pos] = sync_ins[0];
	} else {
1378
		in[mem_pos] = new_r_Sync(new_block, sync_arity, sync_ins);
1379
1380
	}

Matthias Braun's avatar
Matthias Braun committed
1381
1382
	/* match callee */
	amd64_addr_t addr;
Matthias Braun's avatar
Matthias Braun committed
1383
	memset(&addr, 0, sizeof(addr));
Matthias Braun's avatar
Matthias Braun committed
1384
1385
	addr.mem_input = NO_INPUT;
	amd64_op_mode_t op_mode;
1386
1387
1388

	ir_node *mem_proj = NULL;

1389
	if (match_immediate_32(&addr.immediate, callee, true, true)) {
1390
		op_mode = AMD64_OP_UNOP_IMM32;
Matthias Braun's avatar
Matthias Braun committed
1391
	} else if (source_am_possible(block, callee, NULL)) {
1392
1393
1394
1395
1396
1397
1398
1399
		ir_node *load     = get_Proj_pred(callee);
		ir_node *load_ptr = get_Load_ptr(load);
		mem_proj = be_get_Proj_for_pn(load, pn_Load_M);

		perform_address_matching(load_ptr, &in_arity, in, &addr);

		if (addr.base_input != NO_INPUT) {
			in_req[addr.base_input] = &amd64_requirement_gp;
Matthias Braun's avatar
Matthias Braun committed
1400
		}
1401
1402
1403

		if (addr.index_input != NO_INPUT) {
			in_req[addr.index_input] = &amd64_requirement_gp;
Matthias Braun's avatar
Matthias Braun committed
1404
		}
1405
1406
1407
1408
1409
1410

		ir_node *load_mem = get_Load_mem(load);
		ir_node *new_mem  = be_transform_node(load_mem);
		in[mem_pos]       = new_mem;
		addr.mem_input    = mem_pos;

1411
		op_mode = AMD64_OP_UNOP_ADDR;
Matthias Braun's avatar
Matthias Braun committed
1412
	} else {
Matthias Braun's avatar
Matthias Braun committed
1413
		int base_input     = in_arity++;
Matthias Braun's avatar
Matthias Braun committed
1414
		in[base_input]     = be_transform_node(callee);
Matthias Braun's avatar
Matthias Braun committed
1415
		in_req[base_input] = &amd64_requirement_gp;
Matthias Braun's avatar
Matthias Braun committed
1416
1417
		addr.base_input    = base_input;
		addr.index_input   = NO_INPUT;
1418
		op_mode            = AMD64_OP_UNOP_REG;
Matthias Braun's avatar
Matthias Braun committed
1419
1420
	}

1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
	assert(in_arity <= (int)max_inputs);

	/* outputs:
	 *  - memory
	 *  - results
	 *  - caller saves
	 */
	int n_caller_saves
		= rbitset_popcount(cconv->caller_saves, N_AMD64_REGISTERS);
	int out_arity = 1 + cconv->n_reg_results + n_caller_saves;

	/* create call node */
Matthias Braun's avatar
Matthias Braun committed
1433
1434
	ir_node *call = new_bd_amd64_Call(dbgi, new_block, in_arity, in, out_arity,
	                                  op_mode, addr);
1435
1436
	arch_set_irn_register_reqs_in(call, in_req);

1437
1438
1439
1440
1441
	if(mem_proj != NULL) {
		ir_node *load = get_Proj_pred(mem_proj);
		be_set_transformed_node(load, call);
	}

1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
	/* create output register reqs */
	int o = 0;
	arch_set_irn_register_req_out(call, o++, arch_no_register_req);
	/* add register requirements for the result regs */
	for (size_t r = 0; r < n_ress; ++r) {
		const reg_or_stackslot_t  *result_info = &cconv->results[r];
		const arch_register_req_t *req         = result_info->req;
		if (req != NULL) {
			arch_set_irn_register_req_out(call, o++, req);
		}
	}
	const unsigned *allocatable_regs = be_birg_from_irg(irg)->allocatable_regs;
	for (size_t i = 0; i < N_AMD64_REGISTERS; ++i) {
		if (!rbitset_is_set(cconv->caller_saves, i))
			continue;
		const arch_register_t *reg = &amd64_registers[i];
		arch_set_irn_register_req_out(call, o, reg->single_req);
		if (!rbitset_is_set(allocatable_regs, reg->global_index))
			arch_set_irn_register_out(call, o, reg);
		++o;
	}
	assert(o == out_arity);

	/* copy pinned attribute */
	set_irn_pinned(call, get_irn_pinned(node));

	/* IncSP to destroy the call stackframe */
Tobias Rapp's avatar
Tobias Rapp committed
1469
	incsp = create_IncSP(sp_reg, new_block, incsp, -cconv->param_stack_size, 0);
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488