sparc_transform.c 64.3 KB
Newer Older
Hannes Rapp's avatar
Hannes Rapp committed
1
/*
2
 * Copyright (C) 1995-2010 University of Karlsruhe.  All right reserved.
Hannes Rapp's avatar
Hannes Rapp committed
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
 *
 * This file is part of libFirm.
 *
 * This file may be distributed and/or modified under the terms of the
 * GNU General Public License version 2 as published by the Free Software
 * Foundation and appearing in the file LICENSE.GPL included in the
 * packaging of this file.
 *
 * Licensees holding valid libFirm Professional Edition licenses may use
 * this file in accordance with the libFirm Commercial License.
 * Agreement provided with the Software.
 *
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE.
 */

/**
 * @file
 * @brief   code selection (transform FIRM into SPARC FIRM)
Michael Beck's avatar
Michael Beck committed
23
 * @version $Id$
Hannes Rapp's avatar
Hannes Rapp committed
24
25
26
 */
#include "config.h"

27
28
#include <stdint.h>

Hannes Rapp's avatar
Hannes Rapp committed
29
30
31
32
33
34
35
#include "irnode_t.h"
#include "irgraph_t.h"
#include "irmode_t.h"
#include "irgmod.h"
#include "iredges.h"
#include "ircons.h"
#include "irprintf.h"
36
#include "iroptimize.h"
Hannes Rapp's avatar
Hannes Rapp committed
37
38
39
40
#include "dbginfo.h"
#include "iropt_t.h"
#include "debug.h"
#include "error.h"
Matthias Braun's avatar
Matthias Braun committed
41
#include "util.h"
Hannes Rapp's avatar
Hannes Rapp committed
42
43
44
45
46

#include "../benode.h"
#include "../beirg.h"
#include "../beutil.h"
#include "../betranshlp.h"
47
#include "../beabihelper.h"
Hannes Rapp's avatar
Hannes Rapp committed
48
49
50
51
52
53
54
55
#include "bearch_sparc_t.h"

#include "sparc_nodes_attr.h"
#include "sparc_transform.h"
#include "sparc_new_nodes.h"
#include "gen_sparc_new_nodes.h"

#include "gen_sparc_regalloc_if.h"
56
#include "sparc_cconv.h"
Hannes Rapp's avatar
Hannes Rapp committed
57
58
59
60
61

#include <limits.h>

DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)

62
static beabi_helper_env_t    *abihelper;
63
64
static const arch_register_t *sp_reg = &sparc_registers[REG_SP];
static const arch_register_t *fp_reg = &sparc_registers[REG_FRAME_POINTER];
65
66
67
static calling_convention_t  *cconv  = NULL;
static ir_mode               *mode_gp;
static ir_mode               *mode_fp;
68
69
static ir_mode               *mode_fp2;
//static ir_mode               *mode_fp4;
70
static pmap                  *node_to_stack;
Hannes Rapp's avatar
Hannes Rapp committed
71
72
73
74
75
76

static inline int mode_needs_gp_reg(ir_mode *mode)
{
	return mode_is_int(mode) || mode_is_reference(mode);
}

77
78
79
/**
 * Create an And that will zero out upper bits.
 *
Michael Beck's avatar
Michael Beck committed
80
81
82
 * @param dbgi      debug info
 * @param block     the basic block
 * @param op        the original node
83
84
85
86
87
88
 * @param src_bits  number of lower bits that will remain
 */
static ir_node *gen_zero_extension(dbg_info *dbgi, ir_node *block, ir_node *op,
                                   int src_bits)
{
	if (src_bits == 8) {
89
		return new_bd_sparc_And_imm(dbgi, block, op, NULL, 0xFF);
90
	} else if (src_bits == 16) {
91
		ir_node *lshift = new_bd_sparc_Sll_imm(dbgi, block, op, NULL, 16);
92
		ir_node *rshift = new_bd_sparc_Srl_imm(dbgi, block, lshift, NULL, 16);
93
94
95
96
97
98
99
100
		return rshift;
	} else {
		panic("zero extension only supported for 8 and 16 bits");
	}
}

/**
 * Generate code for a sign extension.
Michael Beck's avatar
Michael Beck committed
101
102
103
104
105
 *
 * @param dbgi      debug info
 * @param block     the basic block
 * @param op        the original node
 * @param src_bits  number of lower bits that will remain
106
107
108
109
110
 */
static ir_node *gen_sign_extension(dbg_info *dbgi, ir_node *block, ir_node *op,
                                   int src_bits)
{
	int shift_width = 32 - src_bits;
111
112
	ir_node *lshift_node = new_bd_sparc_Sll_imm(dbgi, block, op, NULL, shift_width);
	ir_node *rshift_node = new_bd_sparc_Sra_imm(dbgi, block, lshift_node, NULL, shift_width);
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
	return rshift_node;
}

/**
 * returns true if it is assured, that the upper bits of a node are "clean"
 * which means for a 16 or 8 bit value, that the upper bits in the register
 * are 0 for unsigned and a copy of the last significant bit for signed
 * numbers.
 */
static bool upper_bits_clean(ir_node *transformed_node, ir_mode *mode)
{
	(void) transformed_node;
	(void) mode;
	/* TODO */
	return false;
}

Michael Beck's avatar
Michael Beck committed
130
131
132
133
134
135
136
137
/**
 * Extend a value to 32 bit signed/unsigned depending on its mode.
 *
 * @param dbgi      debug info
 * @param block     the basic block
 * @param op        the original node
 * @param orig_mode the original mode of op
 */
138
139
140
141
142
143
144
145
146
147
148
149
150
151
static ir_node *gen_extension(dbg_info *dbgi, ir_node *block, ir_node *op,
                              ir_mode *orig_mode)
{
	int bits = get_mode_size_bits(orig_mode);
	if (bits == 32)
		return op;

	if (mode_is_signed(orig_mode)) {
		return gen_sign_extension(dbgi, block, op, bits);
	} else {
		return gen_zero_extension(dbgi, block, op, bits);
	}
}

Hannes Rapp's avatar
Hannes Rapp committed
152
153
typedef enum {
	MATCH_NONE         = 0,
154
155
156
157
	MATCH_COMMUTATIVE  = 1U << 0, /**< commutative operation. */
	MATCH_MODE_NEUTRAL = 1U << 1, /**< the higher bits of the inputs don't
	                                   influence the significant lower bit at
	                                   all (for cases where mode < 32bit) */
Hannes Rapp's avatar
Hannes Rapp committed
158
} match_flags_t;
159
ENUM_BITSET(match_flags_t)
Hannes Rapp's avatar
Hannes Rapp committed
160
161

typedef ir_node* (*new_binop_reg_func) (dbg_info *dbgi, ir_node *block, ir_node *op1, ir_node *op2);
Hannes Rapp's avatar
Hannes Rapp committed
162
typedef ir_node* (*new_binop_fp_func) (dbg_info *dbgi, ir_node *block, ir_node *op1, ir_node *op2, ir_mode *mode);
163
typedef ir_node* (*new_binop_imm_func) (dbg_info *dbgi, ir_node *block, ir_node *op1, ir_entity *entity, int32_t immediate);
164
typedef ir_node* (*new_unop_fp_func) (dbg_info *dbgi, ir_node *block, ir_node *op1, ir_mode *mode);
Hannes Rapp's avatar
Hannes Rapp committed
165

166
167
168
169
170
static bool is_value_imm_encodeable(int32_t value)
{
	return -4096 <= value && value <= 4095;
}

Hannes Rapp's avatar
Hannes Rapp committed
171
/**
172
 * checks if a node's value can be encoded as a immediate
Hannes Rapp's avatar
Hannes Rapp committed
173
174
175
 */
static bool is_imm_encodeable(const ir_node *node)
{
176
	long value;
Hannes Rapp's avatar
Hannes Rapp committed
177
178
179
	if (!is_Const(node))
		return false;

180
	value = get_tarval_long(get_Const_tarval(node));
181
	return is_value_imm_encodeable(value);
Hannes Rapp's avatar
Hannes Rapp committed
182
183
}

184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
static bool needs_extension(ir_mode *mode)
{
	return get_mode_size_bits(mode) < get_mode_size_bits(mode_gp);
}

/**
 * Check, if a given node is a Down-Conv, ie. a integer Conv
 * from a mode with a mode with more bits to a mode with lesser bits.
 * Moreover, we return only true if the node has not more than 1 user.
 *
 * @param node   the node
 * @return non-zero if node is a Down-Conv
 */
static bool is_downconv(const ir_node *node)
{
	ir_mode *src_mode;
	ir_mode *dest_mode;

	if (!is_Conv(node))
		return false;

	src_mode  = get_irn_mode(get_Conv_op(node));
	dest_mode = get_irn_mode(node);
	return
		mode_needs_gp_reg(src_mode)  &&
		mode_needs_gp_reg(dest_mode) &&
		get_mode_size_bits(dest_mode) <= get_mode_size_bits(src_mode);
}

static ir_node *sparc_skip_downconv(ir_node *node)
{
	while (is_downconv(node)) {
		node = get_Conv_op(node);
	}
	return node;
}

Hannes Rapp's avatar
Hannes Rapp committed
221
222
223
/**
 * helper function for binop operations
 *
Michael Beck's avatar
Michael Beck committed
224
225
 * @param new_reg  register generation function ptr
 * @param new_imm  immediate generation function ptr
Hannes Rapp's avatar
Hannes Rapp committed
226
 */
Matthias Braun's avatar
Matthias Braun committed
227
228
229
230
231
static ir_node *gen_helper_binop_args(ir_node *node,
                                      ir_node *op1, ir_node *op2,
                                      match_flags_t flags,
                                      new_binop_reg_func new_reg,
                                      new_binop_imm_func new_imm)
Hannes Rapp's avatar
Hannes Rapp committed
232
{
233
234
	dbg_info *dbgi  = get_irn_dbg_info(node);
	ir_node  *block = be_transform_node(get_nodes_block(node));
Hannes Rapp's avatar
Hannes Rapp committed
235
236
	ir_node  *new_op1;
	ir_node  *new_op2;
237
238
239
240
241
242
243
244
245
	ir_mode  *mode1;
	ir_mode  *mode2;

	if (flags & MATCH_MODE_NEUTRAL) {
		op1 = sparc_skip_downconv(op1);
		op2 = sparc_skip_downconv(op2);
	}
	mode1 = get_irn_mode(op1);
	mode2 = get_irn_mode(op2);
Hannes Rapp's avatar
Hannes Rapp committed
246
247

	if (is_imm_encodeable(op2)) {
248
249
250
251
252
		ir_node *new_op1   = be_transform_node(op1);
		int32_t  immediate = get_tarval_long(get_Const_tarval(op2));
		if (! (flags & MATCH_MODE_NEUTRAL) && needs_extension(mode1)) {
			new_op1 = gen_extension(dbgi, block, new_op1, mode1);
		}
253
		return new_imm(dbgi, block, new_op1, NULL, immediate);
Hannes Rapp's avatar
Hannes Rapp committed
254
255
	}
	new_op2 = be_transform_node(op2);
256
257
258
	if (! (flags & MATCH_MODE_NEUTRAL) && needs_extension(mode2)) {
		new_op2 = gen_extension(dbgi, block, new_op2, mode2);
	}
Hannes Rapp's avatar
Hannes Rapp committed
259
260

	if ((flags & MATCH_COMMUTATIVE) && is_imm_encodeable(op1)) {
261
262
		int32_t immediate = get_tarval_long(get_Const_tarval(op1));
		return new_imm(dbgi, block, new_op2, NULL, immediate);
Hannes Rapp's avatar
Hannes Rapp committed
263
264
	}

265
266
267
268
	new_op1 = be_transform_node(op1);
	if (! (flags & MATCH_MODE_NEUTRAL) && needs_extension(mode1)) {
		new_op1 = gen_extension(dbgi, block, new_op1, mode1);
	}
Hannes Rapp's avatar
Hannes Rapp committed
269
270
271
	return new_reg(dbgi, block, new_op1, new_op2);
}

Matthias Braun's avatar
Matthias Braun committed
272
273
274
275
276
277
278
279
280
static ir_node *gen_helper_binop(ir_node *node, match_flags_t flags,
                                 new_binop_reg_func new_reg,
                                 new_binop_imm_func new_imm)
{
	ir_node *op1 = get_binop_left(node);
	ir_node *op2 = get_binop_right(node);
	return gen_helper_binop_args(node, op1, op2, flags, new_reg, new_imm);
}

Hannes Rapp's avatar
Hannes Rapp committed
281
282
283
/**
 * helper function for FP binop operations
 */
284
static ir_node *gen_helper_binfpop(ir_node *node, ir_mode *mode,
285
286
287
                                   new_binop_fp_func new_func_single,
                                   new_binop_fp_func new_func_double,
                                   new_binop_fp_func new_func_quad)
Hannes Rapp's avatar
Hannes Rapp committed
288
289
290
{
	ir_node  *block   = be_transform_node(get_nodes_block(node));
	ir_node  *op1     = get_binop_left(node);
291
	ir_node  *new_op1 = be_transform_node(op1);
Hannes Rapp's avatar
Hannes Rapp committed
292
	ir_node  *op2     = get_binop_right(node);
293
	ir_node  *new_op2 = be_transform_node(op2);
Hannes Rapp's avatar
Hannes Rapp committed
294
	dbg_info *dbgi    = get_irn_dbg_info(node);
295
296
297
298
299
300
301
302
303
304
305
306
307
	unsigned  bits    = get_mode_size_bits(mode);

	switch (bits) {
	case 32:
		return new_func_single(dbgi, block, new_op1, new_op2, mode);
	case 64:
		return new_func_double(dbgi, block, new_op1, new_op2, mode);
	case 128:
		return new_func_quad(dbgi, block, new_op1, new_op2, mode);
	default:
		break;
	}
	panic("unsupported mode %+F for float op", mode);
Hannes Rapp's avatar
Hannes Rapp committed
308
309
}

310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
static ir_node *gen_helper_unfpop(ir_node *node, ir_mode *mode,
                                  new_unop_fp_func new_func_single,
                                  new_unop_fp_func new_func_double,
                                  new_unop_fp_func new_func_quad)
{
	ir_node  *block   = be_transform_node(get_nodes_block(node));
	ir_node  *op1     = get_binop_left(node);
	ir_node  *new_op1 = be_transform_node(op1);
	dbg_info *dbgi    = get_irn_dbg_info(node);
	unsigned  bits    = get_mode_size_bits(mode);

	switch (bits) {
	case 32:
		return new_func_single(dbgi, block, new_op1, mode);
	case 64:
		return new_func_double(dbgi, block, new_op1, mode);
	case 128:
		return new_func_quad(dbgi, block, new_op1, mode);
	default:
		break;
	}
	panic("unsupported mode %+F for float op", mode);
}

334
335
static ir_node *get_g0(void)
{
336
	return be_prolog_get_reg_value(abihelper, &sparc_registers[REG_G0]);
337
338
}

339
typedef struct address_t {
340
341
	ir_node   *ptr;
	ir_node   *ptr2;
342
343
344
345
	ir_entity *entity;
	int32_t    offset;
} address_t;

346
347
348
349
/**
 * Match a load/store address
 */
static void match_address(ir_node *ptr, address_t *address, bool use_ptr2)
350
351
{
	ir_node   *base   = ptr;
352
	ir_node   *ptr2   = NULL;
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
	int32_t    offset = 0;
	ir_entity *entity = NULL;

	if (is_Add(base)) {
		ir_node *add_right = get_Add_right(base);
		if (is_Const(add_right)) {
			base    = get_Add_left(base);
			offset += get_tarval_long(get_Const_tarval(add_right));
		}
	}
	/* Note that we don't match sub(x, Const) or chains of adds/subs
	 * because this should all be normalized by now */

	/* we only use the symconst if we're the only user otherwise we probably
	 * won't save anything but produce multiple sethi+or combinations with
	 * just different offsets */
	if (is_SymConst(base) && get_irn_n_edges(base) == 1) {
		dbg_info *dbgi      = get_irn_dbg_info(ptr);
		ir_node  *block     = get_nodes_block(ptr);
		ir_node  *new_block = be_transform_node(block);
		entity = get_SymConst_entity(base);
		base   = new_bd_sparc_SetHi(dbgi, new_block, entity, offset);
375
376
377
	} else if (use_ptr2 && is_Add(base) && entity == NULL && offset == 0) {
		ptr2 = be_transform_node(get_Add_right(base));
		base = be_transform_node(get_Add_left(base));
378
379
380
381
382
383
384
385
386
	} else {
		if (is_value_imm_encodeable(offset)) {
			base = be_transform_node(base);
		} else {
			base   = be_transform_node(ptr);
			offset = 0;
		}
	}

387
388
	address->ptr    = base;
	address->ptr2   = ptr2;
389
390
391
392
	address->entity = entity;
	address->offset = offset;
}

Hannes Rapp's avatar
Hannes Rapp committed
393
394
395
396
397
398
399
400
/**
 * Creates an sparc Add.
 *
 * @param node   FIRM node
 * @return the created sparc Add node
 */
static ir_node *gen_Add(ir_node *node)
{
401
402
	ir_mode *mode = get_irn_mode(node);
	ir_node *right;
Hannes Rapp's avatar
Hannes Rapp committed
403

404
	if (mode_is_float(mode)) {
405
406
		return gen_helper_binfpop(node, mode, new_bd_sparc_fadd_s,
		                          new_bd_sparc_fadd_d, new_bd_sparc_fadd_q);
407
	}
Hannes Rapp's avatar
Hannes Rapp committed
408

409
	/* special case: + 0x1000 can be represented as - 0x1000 */
410
	right = get_Add_right(node);
411
	if (is_Const(right)) {
Matthias Braun's avatar
Matthias Braun committed
412
413
414
		ir_node   *left = get_Add_left(node);
		ir_tarval *tv;
		uint32_t   val;
415
416
		/* is this simple address arithmetic? then we can let the linker do
		 * the calculation. */
417
		if (is_SymConst(left) && get_irn_n_edges(left) == 1) {
418
419
420
421
			dbg_info *dbgi  = get_irn_dbg_info(node);
			ir_node  *block = be_transform_node(get_nodes_block(node));
			address_t address;

422
423
424
425
			/* the value of use_ptr2 shouldn't matter here */
			match_address(node, &address, false);
			assert(is_sparc_SetHi(address.ptr));
			return new_bd_sparc_Or_imm(dbgi, block, address.ptr,
426
427
428
429
430
			                           address.entity, address.offset);
		}

		tv  = get_Const_tarval(right);
		val = get_tarval_long(tv);
431
432
433
434
435
		if (val == 0x1000) {
			dbg_info *dbgi   = get_irn_dbg_info(node);
			ir_node  *block  = be_transform_node(get_nodes_block(node));
			ir_node  *op     = get_Add_left(node);
			ir_node  *new_op = be_transform_node(op);
436
			return new_bd_sparc_Sub_imm(dbgi, block, new_op, NULL, -0x1000);
437
438
439
		}
	}

440
441
	return gen_helper_binop(node, MATCH_COMMUTATIVE | MATCH_MODE_NEUTRAL,
	                        new_bd_sparc_Add_reg, new_bd_sparc_Add_imm);
Hannes Rapp's avatar
Hannes Rapp committed
442
443
444
445
446
447
448
449
450
451
}

/**
 * Creates an sparc Sub.
 *
 * @param node       FIRM node
 * @return the created sparc Sub node
 */
static ir_node *gen_Sub(ir_node *node)
{
Michael Beck's avatar
Michael Beck committed
452
	ir_mode *mode = get_irn_mode(node);
453
454

	if (mode_is_float(mode)) {
455
456
		return gen_helper_binfpop(node, mode, new_bd_sparc_fsub_s,
		                          new_bd_sparc_fsub_d, new_bd_sparc_fsub_q);
457
	}
Hannes Rapp's avatar
Hannes Rapp committed
458

459
	return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Sub_reg, new_bd_sparc_Sub_imm);
Hannes Rapp's avatar
Hannes Rapp committed
460
461
}

462
463
static ir_node *create_ldf(dbg_info *dbgi, ir_node *block, ir_node *ptr,
                           ir_node *mem, ir_mode *mode, ir_entity *entity,
464
                           long offset, bool is_frame_entity)
465
466
467
468
469
{
	unsigned bits = get_mode_size_bits(mode);
	assert(mode_is_float(mode));
	if (bits == 32) {
		return new_bd_sparc_Ldf_s(dbgi, block, ptr, mem, mode, entity,
470
		                          offset, is_frame_entity);
471
472
	} else if (bits == 64) {
		return new_bd_sparc_Ldf_d(dbgi, block, ptr, mem, mode, entity,
473
		                          offset, is_frame_entity);
474
475
476
	} else {
		assert(bits == 128);
		return new_bd_sparc_Ldf_q(dbgi, block, ptr, mem, mode, entity,
477
		                          offset, is_frame_entity);
478
479
480
	}
}

481
482
static ir_node *create_stf(dbg_info *dbgi, ir_node *block, ir_node *value,
                           ir_node *ptr, ir_node *mem, ir_mode *mode,
483
                           ir_entity *entity, long offset,
484
485
486
487
488
                           bool is_frame_entity)
{
	unsigned bits = get_mode_size_bits(mode);
	assert(mode_is_float(mode));
	if (bits == 32) {
489
		return new_bd_sparc_Stf_s(dbgi, block, value, ptr, mem, mode, entity,
490
		                          offset, is_frame_entity);
491
	} else if (bits == 64) {
492
		return new_bd_sparc_Stf_d(dbgi, block, value, ptr, mem, mode, entity,
493
		                          offset, is_frame_entity);
494
495
	} else {
		assert(bits == 128);
496
		return new_bd_sparc_Stf_q(dbgi, block, value, ptr, mem, mode, entity,
497
		                          offset, is_frame_entity);
498
499
500
	}
}

Hannes Rapp's avatar
Hannes Rapp committed
501
502
503
504
505
506
507
508
/**
 * Transforms a Load.
 *
 * @param node    the ir Load node
 * @return the created sparc Load node
 */
static ir_node *gen_Load(ir_node *node)
{
509
	dbg_info *dbgi     = get_irn_dbg_info(node);
Hannes Rapp's avatar
Hannes Rapp committed
510
511
512
513
514
515
	ir_mode  *mode     = get_Load_mode(node);
	ir_node  *block    = be_transform_node(get_nodes_block(node));
	ir_node  *ptr      = get_Load_ptr(node);
	ir_node  *mem      = get_Load_mem(node);
	ir_node  *new_mem  = be_transform_node(mem);
	ir_node  *new_load = NULL;
516
517
	address_t address;

518
	if (mode_is_float(mode)) {
519
520
		match_address(ptr, &address, false);
		new_load = create_ldf(dbgi, block, address.ptr, new_mem, mode,
521
		                      address.entity, address.offset, false);
522
	} else {
523
524
525
526
527
528
529
530
531
532
		match_address(ptr, &address, true);
		if (address.ptr2 != NULL) {
			assert(address.entity == NULL && address.offset == 0);
			new_load = new_bd_sparc_Ld_reg(dbgi, block, address.ptr,
			                               address.ptr2, new_mem, mode);
		} else {
			new_load = new_bd_sparc_Ld_imm(dbgi, block, address.ptr, new_mem,
			                               mode, address.entity, address.offset,
			                               false);
		}
533
	}
Hannes Rapp's avatar
Hannes Rapp committed
534
535
	set_irn_pinned(new_load, get_irn_pinned(node));

Hannes Rapp's avatar
Hannes Rapp committed
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
	return new_load;
}

/**
 * Transforms a Store.
 *
 * @param node    the ir Store node
 * @return the created sparc Store node
 */
static ir_node *gen_Store(ir_node *node)
{
	ir_node  *block    = be_transform_node(get_nodes_block(node));
	ir_node  *ptr      = get_Store_ptr(node);
	ir_node  *mem      = get_Store_mem(node);
	ir_node  *new_mem  = be_transform_node(mem);
	ir_node  *val      = get_Store_value(node);
	ir_node  *new_val  = be_transform_node(val);
	ir_mode  *mode     = get_irn_mode(val);
	dbg_info *dbgi     = get_irn_dbg_info(node);
555
556
557
	ir_node  *new_store = NULL;
	address_t address;

558
	if (mode_is_float(mode)) {
559
560
561
		/* TODO: variants with reg+reg address mode */
		match_address(ptr, &address, false);
		new_store = create_stf(dbgi, block, new_val, address.ptr, new_mem,
562
		                       mode, address.entity, address.offset, false);
563
	} else {
564
565
566
567
568
569
570
571
572
573
		match_address(ptr, &address, true);
		if (address.ptr2 != NULL) {
			assert(address.entity == NULL && address.offset == 0);
			new_store = new_bd_sparc_St_reg(dbgi, block, new_val, address.ptr,
			                                address.ptr2, new_mem, mode);
		} else {
			new_store = new_bd_sparc_St_imm(dbgi, block, new_val, address.ptr,
			                                new_mem, mode, address.entity,
			                                address.offset, false);
		}
574
575
	}
	set_irn_pinned(new_store, get_irn_pinned(node));
Hannes Rapp's avatar
Hannes Rapp committed
576
577
578
579

	return new_store;
}

580
581
/**
 * Creates an sparc Mul.
582
 * returns the lower 32bits of the 64bit multiply result
583
584
585
 *
 * @return the created sparc Mul node
 */
586
587
588
static ir_node *gen_Mul(ir_node *node)
{
	ir_mode *mode = get_irn_mode(node);
Hannes Rapp's avatar
Hannes Rapp committed
589
	if (mode_is_float(mode)) {
590
591
		return gen_helper_binfpop(node, mode, new_bd_sparc_fmul_s,
		                          new_bd_sparc_fmul_d, new_bd_sparc_fmul_q);
Hannes Rapp's avatar
Hannes Rapp committed
592
	}
593

594
	return gen_helper_binop(node, MATCH_COMMUTATIVE | MATCH_MODE_NEUTRAL,
595
	                        new_bd_sparc_Mul_reg, new_bd_sparc_Mul_imm);
596
597
598
599
600
601
602
603
}

/**
 * Creates an sparc Mulh.
 * Mulh returns the upper 32bits of a mul instruction
 *
 * @return the created sparc Mulh node
 */
604
605
static ir_node *gen_Mulh(ir_node *node)
{
Michael Beck's avatar
Michael Beck committed
606
	ir_mode *mode = get_irn_mode(node);
607
608
609
610
611
	ir_node *mul;

	if (mode_is_float(mode))
		panic("FP not supported yet");

612
	mul = gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_Mulh_reg, new_bd_sparc_Mulh_imm);
613
	return new_r_Proj(mul, mode_gp, pn_sparc_Mulh_low);
614
}
Hannes Rapp's avatar
Hannes Rapp committed
615

616
617
618
619
620
621
622
623
624
625
626
static ir_node *gen_sign_extension_value(ir_node *node)
{
	ir_node *block     = get_nodes_block(node);
	ir_node *new_block = be_transform_node(block);
	ir_node *new_node  = be_transform_node(node);
	/* TODO: we could do some shortcuts for some value types probably.
	 * (For constants or other cases where we know the sign bit in
	 *  advance) */
	return new_bd_sparc_Sra_imm(NULL, new_block, new_node, NULL, 31);
}

627
628
629
630
631
/**
 * Creates an sparc Div.
 *
 * @return the created sparc Div node
 */
632
633
static ir_node *gen_Div(ir_node *node)
{
634
635
636
637
638
639
640
641
	dbg_info *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_Div_resmode(node);
	ir_node  *left      = get_Div_left(node);
	ir_node  *left_low  = be_transform_node(left);
	ir_node  *right     = get_Div_right(node);
	ir_node  *res;
642

643
644
645
646
647
	if (mode_is_float(mode)) {
		return gen_helper_binfpop(node, mode, new_bd_sparc_fdiv_s,
								  new_bd_sparc_fdiv_d, new_bd_sparc_fdiv_q);
	}

648
	if (mode_is_signed(mode)) {
649
650
651
652
653
654
655
656
657
658
659
		ir_node *left_high = gen_sign_extension_value(left);

		if (is_imm_encodeable(right)) {
			int32_t immediate = get_tarval_long(get_Const_tarval(right));
			res = new_bd_sparc_SDiv_imm(dbgi, new_block, left_high, left_low,
			                            NULL, immediate);
		} else {
			ir_node *new_right = be_transform_node(right);
			res = new_bd_sparc_SDiv_reg(dbgi, new_block, left_high, left_low,
			                            new_right);
		}
660
	} else {
661
662
663
664
665
666
667
668
669
670
		ir_node *left_high = get_g0();
		if (is_imm_encodeable(right)) {
			int32_t immediate = get_tarval_long(get_Const_tarval(right));
			res = new_bd_sparc_UDiv_imm(dbgi, new_block, left_high, left_low,
			                            NULL, immediate);
		} else {
			ir_node *new_right = be_transform_node(right);
			res = new_bd_sparc_UDiv_reg(dbgi, new_block, left_high, left_low,
			                            new_right);
		}
671
	}
672

673
	return res;
674
675
}

676
#if 0
677
678
679
static ir_node *gen_Abs(ir_node *node)
{
	ir_mode *const mode = get_irn_mode(node);
680

681
	if (mode_is_float(mode)) {
682
683
		return gen_helper_unfpop(node, mode, new_bd_sparc_fabs_s,
		                         new_bd_sparc_fabs_d, new_bd_sparc_fabs_q);
684
685
686
687
688
	} else {
		ir_node  *const block  = be_transform_node(get_nodes_block(node));
		dbg_info *const dbgi   = get_irn_dbg_info(node);
		ir_node  *const op     = get_Abs_op(node);
		ir_node  *const new_op = be_transform_node(op);
689
		ir_node  *const sra    = new_bd_sparc_Sra_imm(dbgi, block, new_op, NULL, 31);
690
691
692
		ir_node  *const xor    = new_bd_sparc_Xor_reg(dbgi, block, new_op, sra);
		ir_node  *const sub    = new_bd_sparc_Sub_reg(dbgi, block, xor,    sra);
		return sub;
693
	}
694
}
695
#endif
696
697
698
699

/**
 * Transforms a Not node.
 *
Michael Beck's avatar
Michael Beck committed
700
 * @return the created sparc Not node
701
702
703
 */
static ir_node *gen_Not(ir_node *node)
{
Matthias Braun's avatar
Matthias Braun committed
704
705
	ir_node  *op     = get_Not_op(node);
	ir_node  *zero   = get_g0();
706
707
708
	dbg_info *dbgi   = get_irn_dbg_info(node);
	ir_node  *block  = be_transform_node(get_nodes_block(node));
	ir_node  *new_op = be_transform_node(op);
709

710
	/* Note: Not(Eor()) is normalize in firm localopts already so
Matthias Braun's avatar
Matthias Braun committed
711
712
713
	 * we don't match it for xnor here */

	/* Not can be represented with xnor 0, n */
714
	return new_bd_sparc_XNor_reg(dbgi, block, zero, new_op);
715
716
}

717
718
719
720
721
static ir_node *gen_helper_bitop(ir_node *node,
                                 new_binop_reg_func new_reg,
                                 new_binop_imm_func new_imm,
                                 new_binop_reg_func new_not_reg,
                                 new_binop_imm_func new_not_imm)
722
{
723
724
725
	ir_node *op1 = get_binop_left(node);
	ir_node *op2 = get_binop_right(node);
	if (is_Not(op1)) {
Matthias Braun's avatar
Matthias Braun committed
726
		return gen_helper_binop_args(node, op2, get_Not_op(op1),
727
728
		                             MATCH_MODE_NEUTRAL,
		                             new_not_reg, new_not_imm);
729
	}
730
731
732
733
	if (is_Not(op2)) {
		return gen_helper_binop_args(node, op1, get_Not_op(op2),
		                             MATCH_MODE_NEUTRAL,
		                             new_not_reg, new_not_imm);
734
	}
735
736
737
738
	return gen_helper_binop_args(node, op1, op2,
								 MATCH_MODE_NEUTRAL | MATCH_COMMUTATIVE,
								 new_reg, new_imm);
}
739

740
741
742
743
744
745
746
static ir_node *gen_And(ir_node *node)
{
	return gen_helper_bitop(node,
	                        new_bd_sparc_And_reg,
	                        new_bd_sparc_And_imm,
	                        new_bd_sparc_AndN_reg,
	                        new_bd_sparc_AndN_imm);
747
748
749
750
}

static ir_node *gen_Or(ir_node *node)
{
751
752
753
754
755
	return gen_helper_bitop(node,
	                        new_bd_sparc_Or_reg,
	                        new_bd_sparc_Or_imm,
	                        new_bd_sparc_OrN_reg,
	                        new_bd_sparc_OrN_imm);
756
757
}

758
static ir_node *gen_Eor(ir_node *node)
Hannes Rapp's avatar
Hannes Rapp committed
759
{
760
761
762
763
764
	return gen_helper_bitop(node,
	                        new_bd_sparc_Xor_reg,
	                        new_bd_sparc_Xor_imm,
	                        new_bd_sparc_XNor_reg,
	                        new_bd_sparc_XNor_imm);
Hannes Rapp's avatar
Hannes Rapp committed
765
766
}

767
768
static ir_node *gen_Shl(ir_node *node)
{
769
	return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Sll_reg, new_bd_sparc_Sll_imm);
770
771
772
773
}

static ir_node *gen_Shr(ir_node *node)
{
774
	return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Srl_reg, new_bd_sparc_Srl_imm);
775
}
Hannes Rapp's avatar
Hannes Rapp committed
776

777
static ir_node *gen_Shrs(ir_node *node)
778
{
779
	return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Sra_reg, new_bd_sparc_Sra_imm);
780
781
}

782
783
784
785
786
/**
 * Transforms a Minus node.
 */
static ir_node *gen_Minus(ir_node *node)
{
787
788
789
790
791
792
	ir_mode  *mode = get_irn_mode(node);
	ir_node  *op;
	ir_node  *block;
	ir_node  *new_op;
	ir_node  *zero;
	dbg_info *dbgi;
793
794

	if (mode_is_float(mode)) {
795
796
		return gen_helper_unfpop(node, mode, new_bd_sparc_fneg_s,
		                         new_bd_sparc_fneg_d, new_bd_sparc_fneg_q);
797
	}
798
799
800
801
802
803
	block  = be_transform_node(get_nodes_block(node));
	dbgi   = get_irn_dbg_info(node);
	op     = get_Minus_op(node);
	new_op = be_transform_node(op);
	zero   = get_g0();
	return new_bd_sparc_Sub_reg(dbgi, block, zero, new_op);
804
805
}

806
/**
Michael Beck's avatar
Michael Beck committed
807
 * Create an entity for a given (floating point) tarval
808
 */
Matthias Braun's avatar
Matthias Braun committed
809
static ir_entity *create_float_const_entity(ir_tarval *tv)
810
{
811
812
813
	const arch_env_t *arch_env = be_get_irg_arch_env(current_ir_graph);
	sparc_isa_t      *isa      = (sparc_isa_t*) arch_env;
	ir_entity        *entity   = (ir_entity*) pmap_get(isa->constants, tv);
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
	ir_initializer_t *initializer;
	ir_mode          *mode;
	ir_type          *type;
	ir_type          *glob;

	if (entity != NULL)
		return entity;

	mode   = get_tarval_mode(tv);
	type   = get_type_for_mode(mode);
	glob   = get_glob_type();
	entity = new_entity(glob, id_unique("C%u"), type);
	set_entity_visibility(entity, ir_visibility_private);
	add_entity_linkage(entity, IR_LINKAGE_CONSTANT);

	initializer = create_initializer_tarval(tv);
	set_entity_initializer(entity, initializer);

832
	pmap_insert(isa->constants, tv, entity);
833
834
835
	return entity;
}

836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
static ir_node *gen_float_const(dbg_info *dbgi, ir_node *block, ir_tarval *tv)
{
	ir_entity *entity = create_float_const_entity(tv);
	ir_node   *hi     = new_bd_sparc_SetHi(dbgi, block, entity, 0);
	ir_node   *mem    = new_r_NoMem(current_ir_graph);
	ir_mode   *mode   = get_tarval_mode(tv);
	ir_node   *new_op
		= create_ldf(dbgi, block, hi, mem, mode, entity, 0, false);
	ir_node   *proj   = new_Proj(new_op, mode, pn_sparc_Ldf_res);
	be_dep_on_frame(hi);

	set_irn_pinned(new_op, op_pin_state_floats);
	return proj;
}

851
852
static ir_node *gen_Const(ir_node *node)
{
Matthias Braun's avatar
Matthias Braun committed
853
854
855
	ir_node   *block = be_transform_node(get_nodes_block(node));
	ir_mode   *mode  = get_irn_mode(node);
	dbg_info  *dbgi  = get_irn_dbg_info(node);
856
	ir_tarval *tv    = get_Const_tarval(node);
Matthias Braun's avatar
Matthias Braun committed
857
	long       value;
Hannes Rapp's avatar
Hannes Rapp committed
858
859

	if (mode_is_float(mode)) {
860
		return gen_float_const(dbgi, block, tv);
Hannes Rapp's avatar
Hannes Rapp committed
861
	}
Hannes Rapp's avatar
Hannes Rapp committed
862

863
864
	value = get_tarval_long(tv);
	if (value == 0) {
865
		return get_g0();
866
	} else if (-4096 <= value && value <= 4095) {
867
		return new_bd_sparc_Or_imm(dbgi, block, get_g0(), NULL, value);
868
	} else {
869
		ir_node *hi = new_bd_sparc_SetHi(dbgi, block, NULL, value);
870
871
		be_dep_on_frame(hi);
		if ((value & 0x3ff) != 0) {
872
			return new_bd_sparc_Or_imm(dbgi, block, hi, NULL, value & 0x3ff);
873
874
875
		} else {
			return hi;
		}
876
	}
Hannes Rapp's avatar
Hannes Rapp committed
877
878
}

879
static ir_mode *get_cmp_mode(ir_node *b_value)
880
881
882
{
	ir_node *op;

883
	if (!is_Cmp(b_value))
884
		panic("can't determine cond signednes (no cmp)");
885
	op = get_Cmp_left(b_value);
886
	return get_irn_mode(op);
887
888
}

889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
static ir_node *make_address(dbg_info *dbgi, ir_node *block, ir_entity *entity,
                             int32_t offset)
{
	ir_node *hi  = new_bd_sparc_SetHi(dbgi, block, entity, offset);
	ir_node *low = new_bd_sparc_Or_imm(dbgi, block, hi, entity, offset);
	be_dep_on_frame(hi);
	return low;
}

static ir_node *gen_SwitchJmp(ir_node *node)
{
	dbg_info        *dbgi         = get_irn_dbg_info(node);
	ir_node         *block        = be_transform_node(get_nodes_block(node));
	ir_node         *selector     = get_Cond_selector(node);
	ir_node         *new_selector = be_transform_node(selector);
	long             default_pn   = get_Cond_default_proj(node);
	ir_entity       *entity;
	ir_node         *table_address;
	ir_node         *index;
	ir_node         *load;
	ir_node         *address;

	/* switch with smaller mode not implemented yet */
	assert(get_mode_size_bits(get_irn_mode(selector)) == 32);

	entity = new_entity(NULL, id_unique("TBL%u"), get_unknown_type());
	set_entity_visibility(entity, ir_visibility_private);
	add_entity_linkage(entity, IR_LINKAGE_CONSTANT);

	/* TODO: this code does not construct code to check for access
	 * out-of bounds of the jumptable yet. I think we should put this stuff
	 * into the switch_lowering phase to get some additional optimisations
	 * done. */

	/* construct base address */
924
	table_address = make_address(dbgi, block, entity, 0);
925
926
927
	/* scale index */
	index = new_bd_sparc_Sll_imm(dbgi, block, new_selector, NULL, 2);
	/* load from jumptable */
928
929
	load = new_bd_sparc_Ld_reg(dbgi, block, table_address, index,
	                           new_r_NoMem(current_ir_graph),
930
931
932
933
934
935
	                           mode_gp);
	address = new_r_Proj(load, mode_gp, pn_sparc_Ld_res);

	return new_bd_sparc_SwitchJmp(dbgi, block, address, default_pn, entity);
}

Hannes Rapp's avatar
Hannes Rapp committed
936
937
static ir_node *gen_Cond(ir_node *node)
{
938
939
940
941
942
943
944
945
	ir_node    *selector = get_Cond_selector(node);
	ir_mode    *mode     = get_irn_mode(selector);
	ir_mode    *cmp_mode;
	ir_node    *block;
	ir_node    *flag_node;
	bool        is_unsigned;
	ir_relation relation;
	dbg_info   *dbgi;
Hannes Rapp's avatar
Hannes Rapp committed
946
947
948

	// switch/case jumps
	if (mode != mode_b) {
949
		return gen_SwitchJmp(node);
Hannes Rapp's avatar
Hannes Rapp committed
950
951
952
	}

	// regular if/else jumps
953
	assert(is_Cmp(selector));
Hannes Rapp's avatar
Hannes Rapp committed
954

955
956
	cmp_mode = get_cmp_mode(selector);

957
958
959
	block       = be_transform_node(get_nodes_block(node));
	dbgi        = get_irn_dbg_info(node);
	flag_node   = be_transform_node(get_Proj_pred(selector));
960
	relation    = get_Cmp_relation(selector);
961
962
963
	is_unsigned = !mode_is_signed(cmp_mode);
	if (mode_is_float(cmp_mode)) {
		assert(!is_unsigned);
964
		return new_bd_sparc_fbfcc(dbgi, block, flag_node, relation);
965
	} else {
966
		return new_bd_sparc_Bicc(dbgi, block, flag_node, relation, is_unsigned);
967
	}
Hannes Rapp's avatar
Hannes Rapp committed
968
969
970
971
972
973
974
}

/**
 * transform Cmp
 */
static ir_node *gen_Cmp(ir_node *node)
{
975
976
977
	ir_node *op1      = get_Cmp_left(node);
	ir_node *op2      = get_Cmp_right(node);
	ir_mode *cmp_mode = get_irn_mode(op1);
Hannes Rapp's avatar
Hannes Rapp committed
978
979
	assert(get_irn_mode(op2) == cmp_mode);

980
	if (mode_is_float(cmp_mode)) {
981
982
983
984
985
		ir_node  *block   = be_transform_node(get_nodes_block(node));
		dbg_info *dbgi    = get_irn_dbg_info(node);
		ir_node  *new_op1 = be_transform_node(op1);
		ir_node  *new_op2 = be_transform_node(op2);
		unsigned  bits    = get_mode_size_bits(cmp_mode);
986
987
988
989
990
991
992
993
		if (bits == 32) {
			return new_bd_sparc_fcmp_s(dbgi, block, new_op1, new_op2, cmp_mode);
		} else if (bits == 64) {
			return new_bd_sparc_fcmp_d(dbgi, block, new_op1, new_op2, cmp_mode);
		} else {
			assert(bits == 128);
			return new_bd_sparc_fcmp_q(dbgi, block, new_op1, new_op2, cmp_mode);
		}
Hannes Rapp's avatar
Hannes Rapp committed
994
995
	}

996
997
998
999
1000
	/* when we compare a bitop like and,or,... with 0 then we can directly use
	 * the bitopcc variant.
	 * Currently we only do this when we're the only user of the node...
	 */
	if (is_Const(op2) && is_Const_null(op2) && get_irn_n_edges(op1) == 1) {
For faster browsing, not all history is shown. View entire blame