amd64_transform.c 77.9 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
#include "debug.h"
Matthias Braun's avatar
Matthias Braun committed
11
#include "panic.h"
Matthias Braun's avatar
Matthias Braun committed
12
13
14
#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
#include "amd64_cconv.h"
31
#include "amd64_common_transform.h"
Matthias Braun's avatar
Matthias Braun committed
32
#include "amd64_new_nodes.h"
33
34
#include "amd64_nodes_attr.h"
#include "amd64_transform.h"
Matthias Braun's avatar
Matthias Braun committed
35
#include "../ia32/x86_address_mode.h"
36
37
38
39
40

#include "gen_amd64_regalloc_if.h"

DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)

41
42
43
44
45
46
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
47
static ir_mode         *mode_flags;
48
49
50
51
52
53
54
55
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;
56

Matthias Braun's avatar
Matthias Braun committed
57
static const arch_register_req_t amd64_requirement_gp = {
58
59
60
61
62
63
	.cls             = &amd64_reg_classes[CLASS_amd64_gp],
	.limited         = NULL,
	.type            = arch_register_req_type_normal,
	.other_same      = 0,
	.other_different = 0,
	.width           = 1,
64
65
66
};

static const arch_register_req_t amd64_requirement_flags = {
67
68
69
70
71
72
	.cls             = &amd64_reg_classes[CLASS_amd64_flags],
	.limited         = NULL,
	.type            = arch_register_req_type_normal,
	.other_same      = 0,
	.other_different = 0,
	.width           = 1,
73
74
75
};

static const arch_register_req_t amd64_requirement_xmm = {
76
77
78
79
80
81
	.cls             = &amd64_reg_classes[CLASS_amd64_xmm],
	.limited         = NULL,
	.type            = arch_register_req_type_normal,
	.other_same      = 0,
	.other_different = 0,
	.width           = 1,
Matthias Braun's avatar
Matthias Braun committed
82
83
};

Matthias Braun's avatar
Matthias Braun committed
84
85
86
#define BIT(x)    (1u << x)

static const arch_register_req_t amd64_requirement_gp_same_0 = {
87
88
89
90
91
92
93
	.cls             = &amd64_reg_classes[CLASS_amd64_gp],
	.limited         = NULL,
	.type            = arch_register_req_type_normal
	                   | arch_register_req_type_should_be_same,
	.other_same      = BIT(0),
	.other_different = 0,
	.width           = 1,
Matthias Braun's avatar
Matthias Braun committed
94
95
};

96
static const arch_register_req_t amd64_requirement_xmm_same_0 = {
97
98
99
100
101
102
103
	.cls             = &amd64_reg_classes[CLASS_amd64_xmm],
	.limited         = NULL,
	.type            = arch_register_req_type_normal
	                   | arch_register_req_type_should_be_same,
	.other_same      = BIT(0),
	.other_different = 0,
	.width           = 1,
104
105
};

Matthias Braun's avatar
Matthias Braun committed
106
static const arch_register_req_t amd64_requirement_gp_same_0_not_1 = {
107
108
109
110
111
112
113
114
	.cls             = &amd64_reg_classes[CLASS_amd64_gp],
	.limited         = NULL,
	.type            = arch_register_req_type_normal
	                   | arch_register_req_type_should_be_same
	                   | arch_register_req_type_must_be_different,
	.other_same      = BIT(0),
	.other_different = BIT(1),
	.width           = 1,
Matthias Braun's avatar
Matthias Braun committed
115
116
117
118
};

static const unsigned amd64_limited_gp_rcx [] = { BIT(REG_GP_RCX) };
static const arch_register_req_t amd64_requirement_rcx = {
119
120
121
122
123
124
	.cls             = &amd64_reg_classes[CLASS_amd64_gp],
	.limited         = amd64_limited_gp_rcx,
	.type            = arch_register_req_type_limited,
	.other_same      = 0,
	.other_different = 0,
	.width           = 1,
Matthias Braun's avatar
Matthias Braun committed
125
126
};

127
128
static const unsigned amd64_limited_gp_rax [] = { BIT(REG_GP_RAX) };
static const arch_register_req_t amd64_requirement_rax = {
129
130
131
132
133
134
	.cls             = &amd64_reg_classes[CLASS_amd64_gp],
	.limited         = amd64_limited_gp_rax,
	.type            = arch_register_req_type_limited,
	.other_same      = 0,
	.other_different = 0,
	.width           = 1,
135
136
};

137
138
static const unsigned amd64_limited_gp_rdx [] = { BIT(REG_GP_RDX) };
static const arch_register_req_t amd64_requirement_rdx = {
139
140
141
142
143
144
	.cls             = &amd64_reg_classes[CLASS_amd64_gp],
	.limited         = amd64_limited_gp_rdx,
	.type            = arch_register_req_type_limited,
	.other_same      = 0,
	.other_different = 0,
	.width           = 1,
145
146
};

Matthias Braun's avatar
Matthias Braun committed
147
148
149
150
151
152
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
153
154
155
	&arch_no_requirement,
};

156
157
158
159
160
static const arch_register_req_t *xmm_mem_reqs[] = {
	&amd64_requirement_xmm,
	&arch_no_requirement,
};

Matthias Braun's avatar
Matthias Braun committed
161
162
static const arch_register_req_t *reg_reg_mem_reqs[] = {
	&amd64_requirement_gp,
Matthias Braun's avatar
Matthias Braun committed
163
164
165
166
	&amd64_requirement_gp,
	&arch_no_requirement,
};

167
168
169
170
171
172
static const arch_register_req_t *xmm_reg_mem_reqs[] = {
	&amd64_requirement_xmm,
	&amd64_requirement_gp,
	&arch_no_requirement,
};

Matthias Braun's avatar
Matthias Braun committed
173
174
static const arch_register_req_t *reg_reg_reg_mem_reqs[] = {
	&amd64_requirement_gp,
Matthias Braun's avatar
Matthias Braun committed
175
176
177
178
179
	&amd64_requirement_gp,
	&amd64_requirement_gp,
	&arch_no_requirement,
};

180
181
182
183
184
185
186
static const arch_register_req_t *xmm_reg_reg_mem_reqs[] = {
	&amd64_requirement_xmm,
	&amd64_requirement_gp,
	&amd64_requirement_gp,
	&arch_no_requirement,
};

Tobias Rapp's avatar
Tobias Rapp committed
187
static const arch_register_req_t *reg_flags_reqs[] = {
188
189
190
191
	&amd64_requirement_gp,
	&amd64_requirement_flags,
};

Matthias Braun's avatar
Matthias Braun committed
192
193
static const arch_register_req_t *reg_reg_reqs[] = {
	&amd64_requirement_gp,
194
195
196
	&amd64_requirement_gp,
};

197
198
199
200
201
static const arch_register_req_t *rax_reg_reqs[] = {
	&amd64_requirement_rax,
	&amd64_requirement_gp,
};

202
203
204
205
206
207
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
208
209
210
211
static const arch_register_req_t *reg_reqs[] = {
	&amd64_requirement_gp,
};

212
213
214
215
static const arch_register_req_t *xmm_reqs[] = {
	&amd64_requirement_xmm,
};

Matthias Braun's avatar
Matthias Braun committed
216
217
218
219
220
static const arch_register_req_t *reg_rcx_reqs[] = {
	&amd64_requirement_gp,
	&amd64_requirement_rcx,
};

221
222
223
static const arch_register_req_t *no_reqs[] = {
};

224
225
226
227
228
static const arch_register_req_t *xmm_xmm_reqs[] = {
	&amd64_requirement_xmm,
	&amd64_requirement_xmm,
};

Matthias Braun's avatar
Matthias Braun committed
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
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)
272
{
Matthias Braun's avatar
Matthias Braun committed
273
274
275
276
277
278
	while (is_sameconv(node)) {
		if (get_irn_n_edges(node) > 1)
			break;
		node = get_Conv_op(node);
	}
	return node;
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
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);
	}
}
317

318
319
static ir_node *gen_Const(ir_node *node)
{
320
	ir_node  *block = be_transform_node(get_nodes_block(node));
321
	dbg_info *dbgi  = get_irn_dbg_info(node);
322
	ir_mode  *mode  = get_irn_mode(node);
323
	ir_tarval *tv = get_Const_tarval(node);
324
325
326

	if (!mode_needs_gp_reg(mode)) {
		if (tarval_is_null(tv)) {
327
			return new_bd_amd64_xXorp0(dbgi, block);
328
329
		}

330
		return create_float_const(dbgi, block, tv);
331
332
	}

333
334
	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
335
	return new_bd_amd64_MovImm(dbgi, block, imode, val, NULL);
336
337
}

Matthias Braun's avatar
Matthias Braun committed
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
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;
}

356
static ir_node *gen_Address(ir_node *node)
357
358
359
{
	ir_node   *block  = be_transform_node(get_nodes_block(node));
	dbg_info  *dbgi   = get_irn_dbg_info(node);
360
	ir_entity *entity = get_Address_entity(node);
361

Matthias Braun's avatar
Matthias Braun committed
362
363
	/* do we need RIP-relative addressing because of PIC? */
	reference_mode_t mode = need_relative_addressing(entity);
Matthias Braun's avatar
Matthias Braun committed
364
	if (mode == REFERENCE_DIRECT)
Matthias Braun's avatar
Matthias Braun committed
365
366
367
368
		return new_bd_amd64_MovImm(dbgi, block, INSN_MODE_64, 0, entity);

	amd64_addr_t addr;
	memset(&addr, 0, sizeof(addr));
369
	addr.base_input  = NO_INPUT;
Matthias Braun's avatar
Matthias Braun committed
370
371
	addr.index_input = NO_INPUT;
	addr.mem_input   = NO_INPUT;
Matthias Braun's avatar
Matthias Braun committed
372
373

	if (mode == REFERENCE_IP_RELATIVE) {
Matthias Braun's avatar
Matthias Braun committed
374
		addr.immediate.entity = entity;
375
376
		ir_node *lea = new_bd_amd64_Lea(dbgi, block, 0, NULL, INSN_MODE_64, addr);
		return new_r_Proj(lea, mode_gp, pn_amd64_Lea_res);
Matthias Braun's avatar
Matthias Braun committed
377
378
	} else {
		assert(mode == REFERENCE_GOT);
Matthias Braun's avatar
Matthias Braun committed
379
		addr.immediate.entity = new_got_entry_entity(entity);
380
381
		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
382
		return new_r_Proj(load, mode_gp, pn_amd64_Mov_res);
Matthias Braun's avatar
Matthias Braun committed
383
384
385
	}
}

Tobias Rapp's avatar
Tobias Rapp committed
386
387
388
389
390
391
392
393
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
394
typedef ir_node *(*construct_binop_func)(dbg_info *dbgi, ir_node *block,
Matthias Braun's avatar
Matthias Braun committed
395
	int arity, ir_node *in[], const amd64_binop_addr_attr_t *attr_init);
Matthias Braun's avatar
Matthias Braun committed
396

397
398
399
400
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
401
402
403
404
405
406
407
408
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
409
410
411
412
	amd64_binop_addr_attr_t     attr;
	ir_node                    *mem_proj;
	ir_node                    *in[4];
	int                         arity;
Matthias Braun's avatar
Matthias Braun committed
413
414
415
	const arch_register_req_t **reqs;
} amd64_args_t;

Matthias Braun's avatar
Matthias Braun committed
416
static bool match_immediate_32(amd64_imm32_t *imm, const ir_node *op,
417
418
                               bool can_match_ip_relative,
                               bool upper32_dont_care)
Matthias Braun's avatar
Matthias Braun committed
419
420
{
	assert(mode_needs_gp_reg(get_irn_mode(op)));
Matthias Braun's avatar
Matthias Braun committed
421
	assert(imm->offset == 0 && imm->entity == NULL);
Matthias Braun's avatar
Matthias Braun committed
422
423
424
425
426
427
428
429
	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;
430
431
432
433
434
		/** 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
435
436
437
438
439
440
		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
441
442
		return true;
	}
Matthias Braun's avatar
Matthias Braun committed
443
	/* TODO: SymConst, Add(SymConst, Const) ... */
Matthias Braun's avatar
Matthias Braun committed
444
445
446
447
448
	return false;
}

static ir_heights_t *heights;

449
450
451
452
453
454
455
456
457
static bool input_depends_on_load(ir_node *load, ir_node *input)
{
	ir_node *block = get_nodes_block(load);
	/* if the dependency is in another block, then we ignore it for now
	   as we only match address mode loads in the same block. */
	return get_nodes_block(input) == block
	    && heights_reachable_in_block(heights, input, load);
}

Tobias Rapp's avatar
Tobias Rapp committed
458
459
460
461
462
463
464
465
466
static void fix_node_mem_proj(ir_node *node, ir_node *mem_proj)
{
	if (mem_proj == NULL)
		return;

	ir_node *load = get_Proj_pred(mem_proj);
	be_set_transformed_node(load, node);
}

467
static ir_node *source_am_possible(ir_node *block, ir_node *node)
Matthias Braun's avatar
Matthias Braun committed
468
469
{
	if (!is_Proj(node))
470
		return NULL;
Matthias Braun's avatar
Matthias Braun committed
471
472
	ir_node *load = get_Proj_pred(node);
	if (!is_Load(load))
473
		return NULL;
Matthias Braun's avatar
Matthias Braun committed
474
475
	assert(get_Proj_proj(node) == pn_Load_res);
	if (get_nodes_block(load) != block)
476
		return NULL;
Matthias Braun's avatar
Matthias Braun committed
477
478
	/* make sure we are the only user */
	if (get_irn_n_edges(node) != 1)
479
		return NULL;
Matthias Braun's avatar
Matthias Braun committed
480
481
482
	/* ia32 backend claims this can happen, use an assert for now and see
	 * if we hit it :) */
	assert(!be_is_transformed(node));
483
	return load;
Matthias Braun's avatar
Matthias Braun committed
484
485
486
487
488
489
490
491
492
493
}

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);
}

Tobias Rapp's avatar
Tobias Rapp committed
494
static ir_node *create_sext(ir_node *block, ir_node *const node, ir_mode *mode)
495
496
497
{
	amd64_insn_mode_t insn_mode = get_insn_mode_from_mode(mode);
	dbg_info *const   dbgi      = get_irn_dbg_info(node);
Tobias Rapp's avatar
Tobias Rapp committed
498
499
	ir_node  *const   new_node  = be_transform_node(node);
	ir_node  *const   new_block = be_transform_node(block);
500
501
502
503
504
505

	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;
Tobias Rapp's avatar
Tobias Rapp committed
506
507
508
	ir_node *in[1]    = { new_node };
	ir_node *sext     = new_bd_amd64_Sar(dbgi, new_block, ARRAY_SIZE(in),
	                                     in, &attr);
509
510
511
512
513
514
515

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

	return sext;
}

Tobias Rapp's avatar
Tobias Rapp committed
516
static ir_node *create_zext(ir_node *block, ir_node *const node)
517
{
Tobias Rapp's avatar
Tobias Rapp committed
518
519
520
	dbg_info *const dbgi      = get_irn_dbg_info(node);
	ir_node  *const new_block = be_transform_node(block);
	ir_node  *const zero      = new_bd_amd64_Xor0(dbgi, new_block);
521
522
523
524
525

	arch_set_irn_register_reqs_in(zero, reg_reqs);
	return zero;
}

Tobias Rapp's avatar
Tobias Rapp committed
526
527
static bool use_address_matching(ir_mode *mode, match_flags_t flags,
                                 ir_node *block,
528
529
530
                                 ir_node *op1, ir_node *op2,
                                 ir_node **out_load, ir_node **out_op)
{
531
532
	if (! (flags & match_am))
		return false;
533

Tobias Rapp's avatar
Tobias Rapp committed
534
535
536
537
	unsigned mode_bits = get_mode_size_bits(mode);
	if (mode_bits == 8 || mode_bits == 16)
		return false;

538
539
540
	ir_node *load2 = source_am_possible(block, op2);
	if (load2 != NULL && !input_depends_on_load(load2, op1)) {
		(*out_load) = load2;
541
542
		(*out_op)   = op1;
		return true;
543
544
545
546
547
548
549
550
551
	}

	if (flags & match_commutative) {
		ir_node *load1 = source_am_possible(block, op1);
		if (load1 != NULL && !input_depends_on_load(load1, op2)) {
			(*out_load) = load1;
			(*out_op)   = op2;
			return true;
		}
552
553
554
555
	}
	return false;
}

556
557
static void perform_address_matching(ir_node *ptr, int *arity,
                                     ir_node **in, amd64_addr_t *addr)
558
559
560
{
	x86_address_t maddr;
	memset(&maddr, 0, sizeof(maddr));
561
	x86_create_address_mode(&maddr, ptr, x86_create_am_normal);
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576

	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;
	}
577
578
579
580
581
582
583
584
585
586
	if (maddr.frame_entity != NULL) {
		assert(maddr.entity == NULL);
		addr->immediate.entity = maddr.frame_entity;
		/* not supported yet */
		assert(!is_parameter_entity(maddr.frame_entity)
		       || get_entity_parameter_number(maddr.frame_entity)
		          != IR_VA_START_PARAMETER_NUMBER);
	} else {
		addr->immediate.entity = maddr.entity;
	}
587
588
589
590
	addr->immediate.offset = maddr.offset;
	addr->log_scale        = maddr.scale;
}

Matthias Braun's avatar
Matthias Braun committed
591
592
593
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
594
595
596
{
	memset(args, 0, sizeof(*args));

597
	bool use_am;
598
	bool use_xmm       = mode_is_float(mode);
Matthias Braun's avatar
Matthias Braun committed
599
	bool use_immediate = flags & match_immediate;
600
	bool mode_neutral  = flags & match_mode_neutral;
Matthias Braun's avatar
Matthias Braun committed
601

Matthias Braun's avatar
Matthias Braun committed
602
	args->attr.base.insn_mode = get_insn_mode_from_mode(mode);
Matthias Braun's avatar
Matthias Braun committed
603
604

	/* TODO: legalize phase */
605
	if (mode_neutral) {
Matthias Braun's avatar
Matthias Braun committed
606
607
608
609
610
611
612
613
614
		op1 = skip_downconv(op1);
		op2 = skip_downconv(op2);
	} else {
		/* TODO: extend inputs? */
		(void)needs_extension;
	}

	ir_node *load;
	ir_node *op;
615

Tobias Rapp's avatar
Tobias Rapp committed
616
	use_am = use_address_matching(mode, flags, block, op1, op2, &load, &op);
617

618
619
	if (use_immediate
	    && match_immediate_32(&args->attr.u.immediate, op2, false, mode_neutral)) {
620
		assert(!use_xmm && "Can't (yet) match binop with xmm immediate");
Matthias Braun's avatar
Matthias Braun committed
621
		/* fine, we found an immediate */
Matthias Braun's avatar
Matthias Braun committed
622
623
624
		args->attr.base.base.op_mode = AMD64_OP_REG_IMM;
		args->in[args->arity++]      = be_transform_node(op1);
		args->reqs                   = reg_reqs;
625
	} else if (use_am) {
Matthias Braun's avatar
Matthias Braun committed
626
627
628
629
		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;
630
		amd64_addr_t *addr     = &args->attr.base.addr;
Matthias Braun's avatar
Matthias Braun committed
631

632
633
634
		ir_node *ptr = get_Load_ptr(load);
		perform_address_matching(ptr, &(args->arity), args->in, addr);

635
		args->reqs = use_xmm ? xmm_mem_reqs : reg_mem_reqs;
636
		if (addr->base_input != NO_INPUT && addr->index_input != NO_INPUT) {
637
			args->reqs = use_xmm ? xmm_reg_reg_mem_reqs
638
			             : reg_reg_reg_mem_reqs;
639
		} else if (addr->base_input != NO_INPUT || addr->index_input != NO_INPUT) {
640
			args->reqs = use_xmm ? xmm_reg_mem_reqs
641
			             : reg_reg_mem_reqs;
642
643
644
645
646
		}
		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;
647

648
		args->mem_proj      = be_get_Proj_for_pn(load, pn_Load_M);
649
		args->attr.base.base.op_mode = AMD64_OP_ADDR_REG;
Matthias Braun's avatar
Matthias Braun committed
650
651
652
653
	} else {
		/* simply transform the arguments */
		args->in[args->arity++] = be_transform_node(op1);
		args->in[args->arity++] = be_transform_node(op2);
Matthias Braun's avatar
Matthias Braun committed
654
		args->attr.base.base.op_mode = AMD64_OP_REG_REG;
655

656
		args->reqs = use_xmm ? xmm_xmm_reqs : reg_reg_reqs;
Matthias Braun's avatar
Matthias Braun committed
657
658
659
660
661
662
663
664
665
	}
}

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
666
	match_binop(&args, block, mode, op1, op2, flags);
Matthias Braun's avatar
Matthias Braun committed
667
668
669
670

	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
671
	ir_node *new_node = func(dbgi, new_block, args.arity, args.in, &args.attr);
Matthias Braun's avatar
Matthias Braun committed
672
	arch_set_irn_register_reqs_in(new_node, args.reqs);
673

Tobias Rapp's avatar
Tobias Rapp committed
674
	fix_node_mem_proj(new_node, args.mem_proj);
Matthias Braun's avatar
Matthias Braun committed
675

676
677
678
	if (mode_is_float(mode)) {
		arch_set_irn_register_req_out(new_node, 0,
		                              &amd64_requirement_xmm_same_0);
Tobias Rapp's avatar
Tobias Rapp committed
679
		return new_r_Proj(new_node, mode_D, pn_amd64_xSubs_res);
680
681
682
683
684
	} else {
		arch_set_irn_register_req_out(new_node, 0,
		                              &amd64_requirement_gp_same_0);
		return new_r_Proj(new_node, mode_gp, pn_amd64_Sub_res);
	}
Matthias Braun's avatar
Matthias Braun committed
685
686
}

687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
/* 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);
	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));

Tobias Rapp's avatar
Tobias Rapp committed
728
	use_am = use_address_matching(mode, flags, block, op1, op2, &load, &op);
729

730
	ir_node *mem_proj = NULL;
731
732
733
734
735
	if (use_am) {
		ir_node *new_op    = be_transform_node(op);
		int      reg_input = arity++;
		in[reg_input]      = new_op;

736
737
738
739
740
741
		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;
742
		} else if (addr.base_input != NO_INPUT || addr.index_input != NO_INPUT) {
743
744
745
746
747
748
749
			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;
750
751
752
753
754
755
756
757

		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);
	}

758
	assert((size_t)arity <= ARRAY_SIZE(in));
759
760
761
762
763
	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);
764
765
766
	if (mem_proj != NULL) {
		be_set_transformed_node(load, new_node);
	}
767
768
769
	return new_node;
}

Matthias Braun's avatar
Matthias Braun committed
770
typedef ir_node *(*construct_shift_func)(dbg_info *dbgi, ir_node *block,
Matthias Braun's avatar
Matthias Braun committed
771
	int arity, ir_node *in[], const amd64_shift_attr_t *attr_init);
Matthias Braun's avatar
Matthias Braun committed
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786

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
787
		mode = get_mode_size_bits(mode) > 32 ? mode_gp : mode_Iu;
Matthias Braun's avatar
Matthias Braun committed
788
789
	} else {
		op1 = skip_sameconv(op1);
790
791
792

		/* Use 8/16bit operations instead of doing zext/upconv */
		in[arity++] = be_transform_node(op1);
Matthias Braun's avatar
Matthias Braun committed
793
794
795
796
797
798
	}

	/* 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);
799
		if (get_mode_arithmetic(get_irn_mode(op)) != irma_twos_complement)
Matthias Braun's avatar
Matthias Braun committed
800
801
802
803
			break;
		op2 = op;
	}

Matthias Braun's avatar
Matthias Braun committed
804
805
	amd64_shift_attr_t attr;
	memset(&attr, 0, sizeof(attr));
Matthias Braun's avatar
Matthias Braun committed
806
807
808
	const arch_register_req_t **reqs;
	const arch_register_req_t  *out_req0;
	if (is_Const(op2)) {
Matthias Braun's avatar
Matthias Braun committed
809
810
811
812
		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
813
	} else {
Matthias Braun's avatar
Matthias Braun committed
814
815
816
817
		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
818
	}
Matthias Braun's avatar
Matthias Braun committed
819
	attr.insn_mode = get_insn_mode_from_mode(mode);
Matthias Braun's avatar
Matthias Braun committed
820

Matthias Braun's avatar
Matthias Braun committed
821
822
823
824
	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
825
826
827
	arch_set_irn_register_reqs_in(new_node, reqs);
	arch_set_irn_register_req_out(new_node, 0, out_req0);
	return new_node;
828
829
}

830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
static ir_node *create_Lea_as_Add(ir_node *node, ir_node *op1, ir_node *op2)
{
	dbg_info *const dbgi = get_irn_dbg_info(node);
	ir_node  *block      = get_nodes_block(node);
	ir_node  *new_block  = be_transform_node(block);
	ir_mode *mode        = get_irn_mode(node);

	amd64_insn_mode_t insn_mode;
	if (get_mode_size_bits(mode) <= 32)
		insn_mode = INSN_MODE_32;
	else
		insn_mode = INSN_MODE_64;

	const arch_register_req_t **reqs;
	amd64_addr_t addr;
	memset(&addr, 0, sizeof(addr));

	ir_node *in[2];
	int arity = 0;

	if (match_immediate_32(&addr.immediate, op2, false, true)) {
		in[arity++]      = be_transform_node(op1);
		reqs             = reg_reqs;
		addr.index_input = NO_INPUT;
	} else {
		in[arity++]      = be_transform_node(op1);
		in[arity++]      = be_transform_node(op2);
		addr.index_input = 0;
		addr.base_input  = 1;
		reqs             = reg_reg_reqs;
	}

	ir_node *res = new_bd_amd64_Lea(dbgi, new_block, arity, in, insn_mode, addr);
	arch_set_irn_register_reqs_in(res, reqs);
864
	return new_r_Proj(res, mode_gp, pn_amd64_Lea_res);
865
866
}

Matthias Braun's avatar
Matthias Braun committed
867
868
static ir_node *gen_Add(ir_node *const node)
{
869
870
871
	match_flags_t flags = match_immediate | match_am | match_mode_neutral
	                      | match_commutative;

Matthias Braun's avatar
Matthias Braun committed
872
873
	ir_node *op1 = get_Add_left(node);
	ir_node *op2 = get_Add_right(node);
874
875
876
877
878

	ir_mode *mode  = get_irn_mode(node);
	ir_node *block = get_nodes_block(node);
	ir_node *load, *op;

879
	if (mode_is_float(mode)) {
880
		return gen_binop_am(node, op1, op2, new_bd_amd64_xAdds,
881
882
883
		                    match_commutative | match_am);
	}

884
885
886
887
888
889
890
891
	bool use_am = use_address_matching(mode, flags, block, op1, op2, &load, &op);

	ir_node *res;
	if (use_am)
		res = gen_binop_am(node, op1, op2, new_bd_amd64_Add, flags);
	else
		res = create_Lea_as_Add(node, op1, op2);

Matthias Braun's avatar
Matthias Braun committed
892
893
894
	x86_mark_non_am(node);
	return res;
}
895

Matthias Braun's avatar
Matthias Braun committed
896
static ir_node *gen_Sub(ir_node *const node)
897
{
Matthias Braun's avatar
Matthias Braun committed
898
899
	ir_node  *const op1     = get_Sub_left(node);
	ir_node  *const op2     = get_Sub_right(node);
900
	ir_mode  *const mode    = get_irn_mode(node);
901
902

	if (mode_is_float(mode)) {
903
		return gen_binop_am(node, op1, op2, new_bd_amd64_xSubs, match_am);
904
905
906
907
908
909
	} else {
		/* do not match AM yet until we have a sub->neg+add rule
		 * in amd64_finish */
		return gen_binop_am(node, op1, op2, new_bd_amd64_Sub,
		                    /* match_am | */ match_immediate);
	}
Matthias Braun's avatar
Matthias Braun committed
910
911
912
913
914
915
916
917
918
}

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);
919
920
}

Matthias Braun's avatar
Matthias Braun committed
921
922
923
924
925
926
927
928
929
930
931
932
933
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);
934
	return gen_binop_am(node, op1, op2, new_bd_amd64_Or,
Matthias Braun's avatar
Matthias Braun committed
935
936
937
938
939
940
	                    match_immediate | match_am | match_mode_neutral
	                    | match_commutative);
}

static ir_node *gen_Mul(ir_node *const node)
{
941
942
943
944
945
946
947
	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
948
949
950
		            gen_binop_rax(node, op1, op2, new_bd_amd64_IMul1Op,
		                          match_mode_neutral
		                          | match_commutative);
951
		return new_r_Proj(new_node, mode_gp, pn_amd64_IMul1Op_res_low);
Tobias Rapp's avatar
Tobias Rapp committed
952
953
954
	} else if (mode_is_float(mode)) {
		return gen_binop_am(node, op1, op2, new_bd_amd64_xMuls,
		                    match_commutative | match_am);
955
956
	} else {
		return gen_binop_am(node, op1, op2, new_bd_amd64_IMul,
Tobias Rapp's avatar
Tobias Rapp committed
957
958
		                    match_immediate | match_am
		                    | match_mode_neutral | match_commutative);
959
	}
Matthias Braun's avatar
Matthias Braun committed
960
961
}

962
963
static ir_node *gen_Mulh(ir_node *const node)
{
964
965
966
967
968
	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;

969
	if (mode_is_signed(mode)) {
970
971
972
		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
973
		return new_r_Proj(new_node, mode_gp, pn_amd64_IMul1Op_res_high);
974
975
	} else {
		new_node = gen_binop_rax(node, op1, op2, new_bd_amd64_Mul,
976
977
                         /* match_am TODO */
                         match_mode_neutral | match_commutative);
978
979
		return new_r_Proj(new_node, mode_gp, pn_amd64_Mul_res_high);
	}
980
981
}

Matthias Braun's avatar
Matthias Braun committed
982
983
984
985
986
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
987
	                       match_immediate | match_mode_neutral);
Matthias Braun's avatar
Matthias Braun committed
988
989
990
991
992
993
994
995
996
997
998
999
1000
}

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);
For faster browsing, not all history is shown. View entire blame