sparc_transform.c 58.5 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
41
42
43
44
45
#include "dbginfo.h"
#include "iropt_t.h"
#include "debug.h"
#include "error.h"

#include "../benode.h"
#include "../beirg.h"
#include "../beutil.h"
#include "../betranshlp.h"
46
#include "../beabihelper.h"
Hannes Rapp's avatar
Hannes Rapp committed
47
48
49
50
51
52
53
54
#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"
55
#include "sparc_cconv.h"
Hannes Rapp's avatar
Hannes Rapp committed
56
57
58
59
60

#include <limits.h>

DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)

61
62
63
64
65
66
67
static sparc_code_gen_t      *env_cg;
static beabi_helper_env_t    *abihelper;
static const arch_register_t *sp_reg = &sparc_gp_regs[REG_SP];
static const arch_register_t *fp_reg = &sparc_gp_regs[REG_FRAME_POINTER];
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
92
		ir_node *lshift = new_bd_sparc_Sll_imm(dbgi, block, op, NULL, 16);
		ir_node *rshift = new_bd_sparc_Slr_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,
Michael Beck's avatar
Michael Beck committed
154
	MATCH_COMMUTATIVE  = 1 << 0, /**< commutative operation. */
Hannes Rapp's avatar
Hannes Rapp committed
155
156
157
} match_flags_t;

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
158
typedef ir_node* (*new_binop_fp_func) (dbg_info *dbgi, ir_node *block, ir_node *op1, ir_node *op2, ir_mode *mode);
159
typedef ir_node* (*new_binop_imm_func) (dbg_info *dbgi, ir_node *block, ir_node *op1, ir_entity *entity, int32_t immediate);
160
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
161

162
163
164
165
166
static bool is_value_imm_encodeable(int32_t value)
{
	return -4096 <= value && value <= 4095;
}

Hannes Rapp's avatar
Hannes Rapp committed
167
/**
168
 * checks if a node's value can be encoded as a immediate
Hannes Rapp's avatar
Hannes Rapp committed
169
170
171
 */
static bool is_imm_encodeable(const ir_node *node)
{
172
	long value;
Hannes Rapp's avatar
Hannes Rapp committed
173
174
175
	if (!is_Const(node))
		return false;

176
	value = get_tarval_long(get_Const_tarval(node));
177
	return is_value_imm_encodeable(value);
Hannes Rapp's avatar
Hannes Rapp committed
178
179
180
181
182
}

/**
 * helper function for binop operations
 *
Michael Beck's avatar
Michael Beck committed
183
184
 * @param new_reg  register generation function ptr
 * @param new_imm  immediate generation function ptr
Hannes Rapp's avatar
Hannes Rapp committed
185
 */
Matthias Braun's avatar
Matthias Braun committed
186
187
188
189
190
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
191
{
Matthias Braun's avatar
Matthias Braun committed
192
	dbg_info *dbgi    = get_irn_dbg_info(node);
Hannes Rapp's avatar
Hannes Rapp committed
193
194
195
196
197
198
	ir_node  *block   = be_transform_node(get_nodes_block(node));
	ir_node  *new_op1;
	ir_node  *new_op2;

	if (is_imm_encodeable(op2)) {
		ir_node *new_op1 = be_transform_node(op1);
199
200
		int32_t immediate = get_tarval_long(get_Const_tarval(op2));
		return new_imm(dbgi, block, new_op1, NULL, immediate);
Hannes Rapp's avatar
Hannes Rapp committed
201
202
203
204
	}
	new_op2 = be_transform_node(op2);

	if ((flags & MATCH_COMMUTATIVE) && is_imm_encodeable(op1)) {
205
206
		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
207
208
209
210
211
212
	}
	new_op1 = be_transform_node(op1);

	return new_reg(dbgi, block, new_op1, new_op2);
}

Matthias Braun's avatar
Matthias Braun committed
213
214
215
216
217
218
219
220
221
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
222
223
224
/**
 * helper function for FP binop operations
 */
225
static ir_node *gen_helper_binfpop(ir_node *node, ir_mode *mode,
226
227
228
                                   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
229
230
231
{
	ir_node  *block   = be_transform_node(get_nodes_block(node));
	ir_node  *op1     = get_binop_left(node);
232
	ir_node  *new_op1 = be_transform_node(op1);
Hannes Rapp's avatar
Hannes Rapp committed
233
	ir_node  *op2     = get_binop_right(node);
234
	ir_node  *new_op2 = be_transform_node(op2);
Hannes Rapp's avatar
Hannes Rapp committed
235
	dbg_info *dbgi    = get_irn_dbg_info(node);
236
237
238
239
240
241
242
243
244
245
246
247
248
	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
249
250
}

251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
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);
}

275
276
277
278
279
static ir_node *get_g0(void)
{
	return be_prolog_get_reg_value(abihelper, &sparc_gp_regs[REG_G0]);
}

280
typedef struct address_t {
281
282
	ir_node   *ptr;
	ir_node   *ptr2;
283
284
285
286
	ir_entity *entity;
	int32_t    offset;
} address_t;

287
288
289
290
/**
 * Match a load/store address
 */
static void match_address(ir_node *ptr, address_t *address, bool use_ptr2)
291
292
{
	ir_node   *base   = ptr;
293
	ir_node   *ptr2   = NULL;
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
	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);
316
317
318
	} 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));
319
320
321
322
323
324
325
326
327
	} else {
		if (is_value_imm_encodeable(offset)) {
			base = be_transform_node(base);
		} else {
			base   = be_transform_node(ptr);
			offset = 0;
		}
	}

328
329
	address->ptr    = base;
	address->ptr2   = ptr2;
330
331
332
333
	address->entity = entity;
	address->offset = offset;
}

Hannes Rapp's avatar
Hannes Rapp committed
334
335
336
337
338
339
340
341
/**
 * Creates an sparc Add.
 *
 * @param node   FIRM node
 * @return the created sparc Add node
 */
static ir_node *gen_Add(ir_node *node)
{
342
343
	ir_mode *mode = get_irn_mode(node);
	ir_node *right;
Hannes Rapp's avatar
Hannes Rapp committed
344

345
	if (mode_is_float(mode)) {
346
347
		return gen_helper_binfpop(node, mode, new_bd_sparc_fadd_s,
		                          new_bd_sparc_fadd_d, new_bd_sparc_fadd_q);
348
	}
Hannes Rapp's avatar
Hannes Rapp committed
349

350
	/* special case: + 0x1000 can be represented as - 0x1000 */
351
	right = get_Add_right(node);
352
	if (is_Const(right)) {
353
354
355
356
357
358
359
360
361
362
		tarval  *tv;
		uint32_t val;
		ir_node *left = get_Add_left(node);
		/* is this simple address arithmetic? then we can let the linker do
		 * the calculation. */
		if (is_SymConst(left)) {
			dbg_info *dbgi  = get_irn_dbg_info(node);
			ir_node  *block = be_transform_node(get_nodes_block(node));
			address_t address;

363
364
365
366
			/* 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,
367
368
369
370
371
			                           address.entity, address.offset);
		}

		tv  = get_Const_tarval(right);
		val = get_tarval_long(tv);
372
373
374
375
376
		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);
377
			return new_bd_sparc_Sub_imm(dbgi, block, new_op, NULL, -0x1000);
378
379
380
		}
	}

381
382
	return gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_Add_reg,
	                        new_bd_sparc_Add_imm);
Hannes Rapp's avatar
Hannes Rapp committed
383
384
385
386
387
388
389
390
391
392
}

/**
 * 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
393
	ir_mode *mode = get_irn_mode(node);
394
395

	if (mode_is_float(mode)) {
396
397
		return gen_helper_binfpop(node, mode, new_bd_sparc_fsub_s,
		                          new_bd_sparc_fsub_d, new_bd_sparc_fsub_q);
398
	}
Hannes Rapp's avatar
Hannes Rapp committed
399

400
	return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Sub_reg, new_bd_sparc_Sub_imm);
Hannes Rapp's avatar
Hannes Rapp committed
401
402
}

403
404
static ir_node *create_ldf(dbg_info *dbgi, ir_node *block, ir_node *ptr,
                           ir_node *mem, ir_mode *mode, ir_entity *entity,
405
                           long offset, bool is_frame_entity)
406
407
408
409
410
{
	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,
411
		                          offset, is_frame_entity);
412
413
	} else if (bits == 64) {
		return new_bd_sparc_Ldf_d(dbgi, block, ptr, mem, mode, entity,
414
		                          offset, is_frame_entity);
415
416
417
	} else {
		assert(bits == 128);
		return new_bd_sparc_Ldf_q(dbgi, block, ptr, mem, mode, entity,
418
		                          offset, is_frame_entity);
419
420
421
	}
}

422
423
static ir_node *create_stf(dbg_info *dbgi, ir_node *block, ir_node *value,
                           ir_node *ptr, ir_node *mem, ir_mode *mode,
424
                           ir_entity *entity, long offset,
425
426
427
428
429
                           bool is_frame_entity)
{
	unsigned bits = get_mode_size_bits(mode);
	assert(mode_is_float(mode));
	if (bits == 32) {
430
		return new_bd_sparc_Stf_s(dbgi, block, value, ptr, mem, mode, entity,
431
		                          offset, is_frame_entity);
432
	} else if (bits == 64) {
433
		return new_bd_sparc_Stf_d(dbgi, block, value, ptr, mem, mode, entity,
434
		                          offset, is_frame_entity);
435
436
	} else {
		assert(bits == 128);
437
		return new_bd_sparc_Stf_q(dbgi, block, value, ptr, mem, mode, entity,
438
		                          offset, is_frame_entity);
439
440
441
	}
}

Hannes Rapp's avatar
Hannes Rapp committed
442
443
444
445
446
447
448
449
/**
 * Transforms a Load.
 *
 * @param node    the ir Load node
 * @return the created sparc Load node
 */
static ir_node *gen_Load(ir_node *node)
{
450
	dbg_info *dbgi     = get_irn_dbg_info(node);
Hannes Rapp's avatar
Hannes Rapp committed
451
452
453
454
455
456
	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;
457
458
	address_t address;

459
	if (mode_is_float(mode)) {
460
461
		match_address(ptr, &address, false);
		new_load = create_ldf(dbgi, block, address.ptr, new_mem, mode,
462
		                      address.entity, address.offset, false);
463
	} else {
464
465
466
467
468
469
470
471
472
473
		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);
		}
474
	}
Hannes Rapp's avatar
Hannes Rapp committed
475
476
	set_irn_pinned(new_load, get_irn_pinned(node));

Hannes Rapp's avatar
Hannes Rapp committed
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
	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);
496
497
498
	ir_node  *new_store = NULL;
	address_t address;

499
	if (mode_is_float(mode)) {
500
501
502
		/* TODO: variants with reg+reg address mode */
		match_address(ptr, &address, false);
		new_store = create_stf(dbgi, block, new_val, address.ptr, new_mem,
503
		                       mode, address.entity, address.offset, false);
504
	} else {
505
506
507
508
509
510
511
512
513
514
		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);
		}
515
516
	}
	set_irn_pinned(new_store, get_irn_pinned(node));
Hannes Rapp's avatar
Hannes Rapp committed
517
518
519
520

	return new_store;
}

521
522
/**
 * Creates an sparc Mul.
523
 * returns the lower 32bits of the 64bit multiply result
524
525
526
 *
 * @return the created sparc Mul node
 */
527
528
529
static ir_node *gen_Mul(ir_node *node)
{
	ir_mode *mode = get_irn_mode(node);
Hannes Rapp's avatar
Hannes Rapp committed
530
	if (mode_is_float(mode)) {
531
532
		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
533
	}
534
535

	assert(mode_is_data(mode));
536
	return gen_helper_binop(node, MATCH_COMMUTATIVE,
537
	                        new_bd_sparc_Mul_reg, new_bd_sparc_Mul_imm);
538
539
540
541
542
543
544
545
}

/**
 * Creates an sparc Mulh.
 * Mulh returns the upper 32bits of a mul instruction
 *
 * @return the created sparc Mulh node
 */
546
547
static ir_node *gen_Mulh(ir_node *node)
{
Michael Beck's avatar
Michael Beck committed
548
	ir_mode *mode = get_irn_mode(node);
549
550
551
552
553
554
555
556
	ir_node *mul;
	ir_node *proj_res_hi;

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


	assert(mode_is_data(mode));
557
	mul = gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_Mulh_reg, new_bd_sparc_Mulh_imm);
Hannes Rapp's avatar
Hannes Rapp committed
558
	//arch_irn_add_flags(mul, arch_irn_flags_modify_flags);
Michael Beck's avatar
Michael Beck committed
559
	proj_res_hi = new_r_Proj(mul, mode_gp, pn_sparc_Mulh_low);
560
	return proj_res_hi;
561
}
Hannes Rapp's avatar
Hannes Rapp committed
562

563
564
565
566
567
568
569
570
571
572
573
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);
}

574
575
576
577
578
/**
 * Creates an sparc Div.
 *
 * @return the created sparc Div node
 */
579
580
static ir_node *gen_Div(ir_node *node)
{
581
582
583
584
585
586
587
588
	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;
589

590
	assert(!mode_is_float(mode));
591
	if (mode_is_signed(mode)) {
592
593
594
595
596
597
598
599
600
601
602
		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);
		}
603
	} else {
604
605
606
607
608
609
610
611
612
613
		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);
		}
614
	}
615

616
	return res;
617
618
}

619
620
621
622
static ir_node *gen_Quot(ir_node *node)
{
	ir_mode *mode = get_Quot_resmode(node);
	assert(mode_is_float(mode));
623
624
	return gen_helper_binfpop(node, mode, new_bd_sparc_fdiv_s,
	                          new_bd_sparc_fdiv_d, new_bd_sparc_fdiv_q);
625
}
626

627
628
629
static ir_node *gen_Abs(ir_node *node)
{
	ir_mode *const mode = get_irn_mode(node);
630

631
	if (mode_is_float(mode)) {
632
633
		return gen_helper_unfpop(node, mode, new_bd_sparc_fabs_s,
		                         new_bd_sparc_fabs_d, new_bd_sparc_fabs_q);
634
635
636
637
638
	} 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);
639
		ir_node  *const sra    = new_bd_sparc_Sra_imm(dbgi, block, new_op, NULL, 31);
640
641
642
		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;
643
	}
644
645
646
647
648
}

/**
 * Transforms a Not node.
 *
Michael Beck's avatar
Michael Beck committed
649
 * @return the created sparc Not node
650
651
652
 */
static ir_node *gen_Not(ir_node *node)
{
Matthias Braun's avatar
Matthias Braun committed
653
654
	ir_node  *op     = get_Not_op(node);
	ir_node  *zero   = get_g0();
655
656
657
	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);
658

Matthias Braun's avatar
Matthias Braun committed
659
660
661
662
	/* Note: Not(Eor()) is normalize in firm locatopts already so
	 * we don't match it for xnor here */

	/* Not can be represented with xnor 0, n */
663
	return new_bd_sparc_XNor_reg(dbgi, block, zero, new_op);
664
665
}

666
667
static ir_node *gen_And(ir_node *node)
{
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
	ir_node *left  = get_And_left(node);
	ir_node *right = get_And_right(node);

	if (is_Not(right)) {
		ir_node *not_op = get_Not_op(right);
		return gen_helper_binop_args(node, left, not_op, MATCH_NONE,
		                             new_bd_sparc_AndN_reg,
		                             new_bd_sparc_AndN_imm);
	}
	if (is_Not(left)) {
		ir_node *not_op = get_Not_op(left);
		return gen_helper_binop_args(node, right, not_op, MATCH_NONE,
		                             new_bd_sparc_AndN_reg,
		                             new_bd_sparc_AndN_imm);
	}

	return gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_And_reg,
	                        new_bd_sparc_And_imm);
686
687
688
689
}

static ir_node *gen_Or(ir_node *node)
{
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
	ir_node *left  = get_Or_left(node);
	ir_node *right = get_Or_right(node);

	if (is_Not(right)) {
		ir_node *not_op = get_Not_op(right);
		return gen_helper_binop_args(node, left, not_op, MATCH_NONE,
		                             new_bd_sparc_OrN_reg,
		                             new_bd_sparc_OrN_imm);
	}
	if (is_Not(left)) {
		ir_node *not_op = get_Not_op(left);
		return gen_helper_binop_args(node, right, not_op, MATCH_NONE,
		                             new_bd_sparc_OrN_reg,
		                             new_bd_sparc_OrN_imm);
	}

	return gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_Or_reg,
	                        new_bd_sparc_Or_imm);
708
709
}

710
static ir_node *gen_Eor(ir_node *node)
Hannes Rapp's avatar
Hannes Rapp committed
711
{
Matthias Braun's avatar
Matthias Braun committed
712
713
714
715
716
717
718
719
720
	ir_node *left  = get_Eor_left(node);
	ir_node *right = get_Eor_right(node);

	if (is_Not(right)) {
		ir_node *not_op = get_Not_op(right);
		return gen_helper_binop_args(node, left, not_op, MATCH_COMMUTATIVE,
		                             new_bd_sparc_XNor_reg,
		                             new_bd_sparc_XNor_imm);
	}
721
722
723
724
725
726
727
	if (is_Not(left)) {
		ir_node *not_op = get_Not_op(left);
		return gen_helper_binop_args(node, not_op, right,
		                             MATCH_COMMUTATIVE | MATCH_MODE_NEUTRAL,
		                             new_bd_sparc_XNor_reg,
		                             new_bd_sparc_XNor_imm);
	}
Matthias Braun's avatar
Matthias Braun committed
728
729
730

	return gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_Xor_reg,
	                        new_bd_sparc_Xor_imm);
Hannes Rapp's avatar
Hannes Rapp committed
731
732
}

733
734
static ir_node *gen_Shl(ir_node *node)
{
735
	return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Sll_reg, new_bd_sparc_Sll_imm);
736
737
738
739
}

static ir_node *gen_Shr(ir_node *node)
{
740
	return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Slr_reg, new_bd_sparc_Slr_imm);
741
}
Hannes Rapp's avatar
Hannes Rapp committed
742

743
static ir_node *gen_Shrs(ir_node *node)
744
{
745
	return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Sra_reg, new_bd_sparc_Sra_imm);
746
747
}

748
749
750
751
752
/**
 * Transforms a Minus node.
 */
static ir_node *gen_Minus(ir_node *node)
{
753
754
755
756
757
758
	ir_mode  *mode = get_irn_mode(node);
	ir_node  *op;
	ir_node  *block;
	ir_node  *new_op;
	ir_node  *zero;
	dbg_info *dbgi;
759
760

	if (mode_is_float(mode)) {
761
762
		return gen_helper_unfpop(node, mode, new_bd_sparc_fneg_s,
		                         new_bd_sparc_fneg_d, new_bd_sparc_fneg_q);
763
	}
764
765
766
767
768
769
	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);
770
771
}

772
/**
Michael Beck's avatar
Michael Beck committed
773
 * Create an entity for a given (floating point) tarval
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
 */
static ir_entity *create_float_const_entity(tarval *tv)
{
	ir_entity        *entity = (ir_entity*) pmap_get(env_cg->constants, tv);
	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);

	pmap_insert(env_cg->constants, tv, entity);
	return entity;
}

800
801
static ir_node *gen_Const(ir_node *node)
{
802
803
804
805
806
	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);
	tarval   *tv;
	long      value;
Hannes Rapp's avatar
Hannes Rapp committed
807
808

	if (mode_is_float(mode)) {
809
810
		tarval    *tv     = get_Const_tarval(node);
		ir_entity *entity = create_float_const_entity(tv);
811
		ir_node   *hi     = new_bd_sparc_SetHi(dbgi, block, entity, 0);
812
813
		ir_node   *mem    = new_NoMem();
		ir_node   *new_op
814
			= create_ldf(dbgi, block, hi, mem, mode, entity, 0, false);
815
		ir_node   *proj   = new_Proj(new_op, mode, pn_sparc_Ldf_res);
816
		be_dep_on_frame(hi);
817
818

		set_irn_pinned(new_op, op_pin_state_floats);
819
		return proj;
Hannes Rapp's avatar
Hannes Rapp committed
820
	}
Hannes Rapp's avatar
Hannes Rapp committed
821

822
823
824
	tv    = get_Const_tarval(node);
	value = get_tarval_long(tv);
	if (value == 0) {
825
		return get_g0();
826
	} else if (-4096 <= value && value <= 4095) {
827
		return new_bd_sparc_Or_imm(dbgi, block, get_g0(), NULL, value);
828
	} else {
829
		ir_node *hi = new_bd_sparc_SetHi(dbgi, block, NULL, value);
830
831
		be_dep_on_frame(hi);
		if ((value & 0x3ff) != 0) {
832
			return new_bd_sparc_Or_imm(dbgi, block, hi, NULL, value & 0x3ff);
833
834
835
		} else {
			return hi;
		}
836
	}
Hannes Rapp's avatar
Hannes Rapp committed
837
838
}

839
static ir_mode *get_cmp_mode(ir_node *b_value)
840
841
842
843
844
845
846
847
848
849
{
	ir_node *pred;
	ir_node *op;

	if (!is_Proj(b_value))
		panic("can't determine cond signednes");
	pred = get_Proj_pred(b_value);
	if (!is_Cmp(pred))
		panic("can't determine cond signednes (no cmp)");
	op = get_Cmp_left(pred);
850
	return get_irn_mode(op);
851
852
}

Hannes Rapp's avatar
Hannes Rapp committed
853
854
855
856
857
858
859
/**
 * Transform Cond nodes
 */
static ir_node *gen_Cond(ir_node *node)
{
	ir_node  *selector = get_Cond_selector(node);
	ir_mode  *mode     = get_irn_mode(selector);
860
	ir_mode  *cmp_mode;
Hannes Rapp's avatar
Hannes Rapp committed
861
862
	ir_node  *block;
	ir_node  *flag_node;
863
864
	bool      is_unsigned;
	pn_Cmp    pnc;
Hannes Rapp's avatar
Hannes Rapp committed
865
866
867
868
	dbg_info *dbgi;

	// switch/case jumps
	if (mode != mode_b) {
869
		panic("SwitchJump not implemented yet");
Hannes Rapp's avatar
Hannes Rapp committed
870
871
872
873
	}

	// regular if/else jumps
	assert(is_Proj(selector));
874
	assert(is_Cmp(get_Proj_pred(selector)));
Hannes Rapp's avatar
Hannes Rapp committed
875

876
877
	cmp_mode = get_cmp_mode(selector);

878
879
880
881
	block       = be_transform_node(get_nodes_block(node));
	dbgi        = get_irn_dbg_info(node);
	flag_node   = be_transform_node(get_Proj_pred(selector));
	pnc         = get_Proj_proj(selector);
882
883
884
885
886
887
888
	is_unsigned = !mode_is_signed(cmp_mode);
	if (mode_is_float(cmp_mode)) {
		assert(!is_unsigned);
		return new_bd_sparc_fbfcc(dbgi, block, flag_node, pnc);
	} else {
		return new_bd_sparc_Bicc(dbgi, block, flag_node, pnc, is_unsigned);
	}
Hannes Rapp's avatar
Hannes Rapp committed
889
890
891
892
893
894
895
896
897
898
899
900
}

/**
 * transform Cmp
 */
static ir_node *gen_Cmp(ir_node *node)
{
	ir_node  *block    = be_transform_node(get_nodes_block(node));
	ir_node  *op1      = get_Cmp_left(node);
	ir_node  *op2      = get_Cmp_right(node);
	ir_mode  *cmp_mode = get_irn_mode(op1);
	dbg_info *dbgi     = get_irn_dbg_info(node);
901
902
	ir_node  *new_op1  = be_transform_node(op1);
	ir_node  *new_op2  = be_transform_node(op2);
Hannes Rapp's avatar
Hannes Rapp committed
903
904
	assert(get_irn_mode(op2) == cmp_mode);

905
	if (mode_is_float(cmp_mode)) {
906
907
908
909
910
911
912
913
914
		unsigned bits = get_mode_size_bits(cmp_mode);
		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
915
916
917
	}

	/* integer compare */
918
919
	new_op1 = gen_extension(dbgi, block, new_op1, cmp_mode);
	new_op2 = gen_extension(dbgi, block, new_op2, cmp_mode);
920
	return new_bd_sparc_Cmp_reg(dbgi, block, new_op1, new_op2);
Hannes Rapp's avatar
Hannes Rapp committed
921
922
923
924
925
926
927
}

/**
 * Transforms a SymConst node.
 */
static ir_node *gen_SymConst(ir_node *node)
{
928
929
930
931
932
933
934
	ir_entity *entity    = get_SymConst_entity(node);
	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   *hi        = new_bd_sparc_SetHi(dbgi, new_block, entity, 0);
	ir_node   *low       = new_bd_sparc_Or_imm(dbgi, new_block, hi, entity, 0);
	be_dep_on_frame(hi);
Hannes Rapp's avatar
Hannes Rapp committed
935

936
	return low;
Hannes Rapp's avatar
Hannes Rapp committed
937
938
}

939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
static ir_node *create_fftof(dbg_info *dbgi, ir_node *block, ir_node *op,
                             ir_mode *src_mode, ir_mode *dst_mode)
{
	unsigned src_bits = get_mode_size_bits(src_mode);
	unsigned dst_bits = get_mode_size_bits(dst_mode);
	if (src_bits == 32) {
		if (dst_bits == 64) {
			return new_bd_sparc_fftof_s_d(dbgi, block, op, src_mode, dst_mode);
		} else {
			assert(dst_bits == 128);
			return new_bd_sparc_fftof_s_q(dbgi, block, op, src_mode, dst_mode);
		}
	} else if (src_bits == 64) {
		if (dst_bits == 32) {
			return new_bd_sparc_fftof_d_s(dbgi, block, op, src_mode, dst_mode);
		} else {
			assert(dst_bits == 128);
			return new_bd_sparc_fftof_d_q(dbgi, block, op, src_mode, dst_mode);
		}
	} else {
		assert(src_bits == 128);
		if (dst_bits == 32) {
			return new_bd_sparc_fftof_q_s(dbgi, block, op, src_mode, dst_mode);
		} else {
			assert(dst_bits == 64);
			return new_bd_sparc_fftof_q_d(dbgi, block, op, src_mode, dst_mode);
		}
	}
}

static ir_node *create_ftoi(dbg_info *dbgi, ir_node *block, ir_node *op,
                            ir_mode *src_mode)
{
	unsigned bits = get_mode_size_bits(src_mode);
	if (bits == 32) {
		return new_bd_sparc_fftoi_s(dbgi, block, op, src_mode);
	} else if (bits == 64) {
		return new_bd_sparc_fftoi_d(dbgi, block, op, src_mode);
	} else {
		assert(bits == 128);
		return new_bd_sparc_fftoi_q(dbgi, block, op, src_mode);
	}
}

static ir_node *create_itof(dbg_info *dbgi, ir_node *block, ir_node *op,
                            ir_mode *dst_mode)
{
	unsigned bits = get_mode_size_bits(dst_mode);
	if (bits == 32) {
		return new_bd_sparc_fitof_s(dbgi, block, op, dst_mode);
	} else if (bits == 64) {
		return new_bd_sparc_fitof_d(dbgi, block, op, dst_mode);
	} else {
		assert(bits == 128);
		return new_bd_sparc_fitof_q(dbgi, block, op, dst_mode);
	}
}

Hannes Rapp's avatar
Hannes Rapp committed
997
998
999
1000
/**
 * Transforms a Conv node.
 *
 */
1001
1002
static ir_node *gen_Conv(ir_node *node)
{
Hannes Rapp's avatar
Hannes Rapp committed
1003
1004
1005
1006
1007
1008
1009
	ir_node  *block    = be_transform_node(get_nodes_block(node));
	ir_node  *op       = get_Conv_op(node);
	ir_node  *new_op   = be_transform_node(op);
	ir_mode  *src_mode = get_irn_mode(op);
	ir_mode  *dst_mode = get_irn_mode(node);
	dbg_info *dbg      = get_irn_dbg_info(node);

Hannes Rapp's avatar
Hannes Rapp committed
1010
1011
1012
	int src_bits = get_mode_size_bits(src_mode);
	int dst_bits = get_mode_size_bits(dst_mode);

Hannes Rapp's avatar
Hannes Rapp committed
1013
1014
1015
1016
	if (src_mode == dst_mode)
		return new_op;

	if (mode_is_float(src_mode) || mode_is_float(dst_mode)) {
Hannes Rapp's avatar
Hannes Rapp committed
1017
1018
1019
1020
		assert((src_bits <= 64 && dst_bits <= 64) && "quad FP not implemented");

		if (mode_is_float(src_mode)) {
			if (mode_is_float(dst_mode)) {
Michael Beck's avatar
Michael Beck committed
1021
				/* float -> float conv */
1022
				return create_fftof(dbg, block, new_op, src_mode, dst_mode);
Hannes Rapp's avatar
Hannes Rapp committed
1023
			} else {
Michael Beck's avatar
Michael Beck committed
1024
				/* float -> int conv */
1025
1026
				if (!mode_is_signed(dst_mode))
					panic("float to unsigned not implemented yet");
1027
				return create_ftoi(dbg, block, new_op, src_mode);
Hannes Rapp's avatar
Hannes Rapp committed
1028
1029
			}
		} else {
Michael Beck's avatar
Michael Beck committed
1030
			/* int -> float conv */
1031
1032
			if (!mode_is_signed(src_mode))
				panic("unsigned to float not implemented yet");
1033
			return create_itof(dbg, block, new_op, dst_mode);
Hannes Rapp's avatar
Hannes Rapp committed
1034
		}
Hannes Rapp's avatar
Hannes Rapp committed
1035
1036
1037
1038
1039
	} else { /* complete in gp registers */
		int min_bits;
		ir_mode *min_mode;

		if (src_bits == dst_bits) {
Michael Beck's avatar
Michael Beck committed
1040
			/* kill unnecessary conv */
Hannes Rapp's avatar
Hannes Rapp committed
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
			return new_op;
		}

		if (src_bits < dst_bits) {
			min_bits = src_bits;
			min_mode = src_mode;
		} else {
			min_bits = dst_bits;
			min_mode = dst_mode;
		}

		if (upper_bits_clean(new_op, min_mode)) {
			return new_op;
		}

		if (mode_is_signed(min_mode)) {
			return gen_sign_extension(dbg, block, new_op, min_bits);
		} else {
			return gen_zero_extension(dbg, block, new_op, min_bits);
		}
	}
}

1064
1065
1066
1067
1068
1069
1070
1071
1072
static ir_node *gen_Unknown(ir_node *node)
{
	/* just produce a 0 */
	ir_mode *mode = get_irn_mode(node);
	if (mode_is_float(mode)) {
		panic("FP not implemented");
		be_dep_on_frame(node);
		return node;
	} else if (mode_needs_gp_reg(mode)) {
1073
		return get_g0();
1074
1075
1076
1077
1078
	}

	panic("Unexpected Unknown mode");
}

1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
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
/**
 * Produces the type which sits between the stack args and the locals on the
 * stack.
 */
static ir_type *sparc_get_between_type(void)
{
	static ir_type *between_type = NULL;

	if (between_type == NULL) {
		between_type = new_type_class(new_id_from_str("sparc_between_type"));
		set_type_size_bytes(between_type, SPARC_MIN_STACKSIZE);
	}

	return between_type;
}

static void create_stacklayout(ir_graph *irg)
{
	ir_entity         *entity        = get_irg_entity(irg);
	ir_type           *function_type = get_entity_type(entity);
	be_stack_layout_t *layout        = be_get_irg_stack_layout(irg);
	ir_type           *arg_type;
	int                p;
	int                n_params;

	/* calling conventions must be decided by now */
	assert(cconv != NULL);

	/* construct argument type */
	arg_type = new_type_struct(id_mangle_u(get_entity_ident(entity), new_id_from_chars("arg_type", 8)));
	n_params = get_method_n_params(function_type);
	for (p = 0; p < n_params; ++p) {
		reg_or_stackslot_t *param = &cconv->parameters[p];
		char                buf[128];
		ident              *id;

		if (param->type == NULL)
			continue;

		snprintf(buf, sizeof(buf), "param_%d", p);
		id            = new_id_from_str(buf);
		param->entity = new_entity(arg_type, id, param->type);
		set_entity_offset(param->entity, param->offset);
	}

	memset(layout, 0, sizeof(*layout));

	layout->frame_type     = get_irg_frame_type(irg);
	layout->between_type   = sparc_get_between_type();
	layout->arg_type       = arg_type;
	layout->initial_offset = 0;
	layout->initial_bias   = 0;
	layout->stack_dir      = -1;
	layout->sp_relative    = false;

	assert(N_FRAME_TYPES == 3);
	layout->order[0] = layout->frame_type;
	layout->order[1] = layout->between_type;
	layout->order[2] = layout->arg_type;
}

/**
 * transform the start node to the prolog code + initial barrier
 */
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);
	ir_node   *mem;
	ir_node   *start;
	ir_node   *sp;
	ir_node   *fp;
	ir_node   *barrier;
	ir_node   *save;
	int        i;

	/* stackpointer is important at function prolog */
	be_prolog_add_reg(abihelper, sp_reg,
			arch_register_req_type_produces_sp | arch_register_req_type_ignore);
1162
1163
	be_prolog_add_reg(abihelper, &sparc_gp_regs[REG_G0],
	        arch_register_req_type_ignore);
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
	/* function parameters in registers */
	for (i = 0; i < get_method_n_params(function_type); ++i) {
		const reg_or_stackslot_t *param = &cconv->parameters[i];
		if (param->reg0 != NULL)
			be_prolog_add_reg(abihelper, param->reg0, 0);
		if (param->reg1 != NULL)
			be_prolog_add_reg(abihelper, param->reg1, 0);
	}

	start = be_prolog_create_start(abihelper, dbgi, new_block);

	mem  = be_prolog_get_memory(abihelper);
	sp   = be_prolog_get_reg_value(abihelper, sp_reg);
	save = new_bd_sparc_Save(NULL, block, sp, mem, SPARC_MIN_STACKSIZE);
	fp   = new_r_Proj(save, mode_gp, pn_sparc_Save_frame);
	sp   = new_r_Proj(save, mode_gp, pn_sparc_Save_stack);
	mem  = new_r_Proj(save, mode_M, pn_sparc_Save_mem);
	arch_set_irn_register(fp, fp_reg);
	arch_set_irn_register(sp, sp_reg);

	be_prolog_add_reg(abihelper, fp_reg, arch_register_req_type_ignore);
	be_prolog_set_reg_value(abihelper, fp_reg, fp);

	sp = be_new_IncSP(sp_reg, new_block, sp, BE_STACK_FRAME_SIZE_EXPAND, 0);
	be_prolog_set_reg_value(abihelper, sp_reg, sp);
	be_prolog_set_memory(abihelper, mem);

	barrier = be_prolog_create_barrier(abihelper, new_block);

	return barrier;
}

static ir_node *get_stack_pointer_for(ir_node *node)
{
	/* get predecessor in stack_order list */
	ir_node *stack_pred = be_get_stack_pred(abihelper, node);
	ir_node *stack_pred_transformed;
	ir_node *stack;

	if (stack_pred == NULL) {
		/* first stack user in the current block. We can simply use the
		 * initial sp_proj for it */
		ir_node *sp_proj = be_prolog_get_reg_value(abihelper, sp_reg);
		return sp_proj;
	}

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

	return stack;
}

/**
 * transform a Return node into epilogue code + return statement
 */
static ir_node *gen_Return(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);
	ir_node  *mem            = get_Return_mem(node);
	ir_node  *new_mem        = be_transform_node(mem);
	ir_node  *sp_proj        = get_stack_pointer_for(node);
	int       n_res          = get_Return_n_ress(node);
	ir_node  *bereturn;
	ir_node  *incsp;
	int       i;

	be_epilog_begin(abihelper);
	be_epilog_set_memory(abihelper, new_mem);
	/* connect stack pointer with initial stack pointer. fix_stack phase
	   will later serialize all stack pointer adjusting nodes */
	be_epilog_add_reg(abihelper, sp_reg,
			arch_register_req_type_produces_sp | arch_register_req_type_ignore,
			sp_proj);

	/* result values */
	for (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          = &cconv->results[i];
		const arch_register_t    *reg           = slot->reg0;
		assert(slot->reg1 == NULL);
		be_epilog_add_reg(abihelper, reg, 0, new_res_value);
	}

	/* create the barrier before the epilog code */
	be_epilog_create_barrier(abihelper, new_block);

	/* epilog code: an incsp */
	sp_proj = be_epilog_get_reg_value(abihelper, sp_reg);
	incsp   = be_new_IncSP(sp_reg, new_block, sp_proj,
	                       BE_STACK_FRAME_SIZE_SHRINK, 0);
	be_epilog_set_reg_value(abihelper, sp_reg, incsp);

	bereturn = be_epilog_create_return(abihelper, dbgi, new_block);

	return bereturn;
}

static ir_node *bitcast_int_to_float(dbg_info *dbgi, ir_node *block,
1268
                                     ir_node *value0, ir_node *value1)
1269
1270
{
	ir_graph *irg   = current_ir_graph;
1271
	ir_node  *sp    = get_irg_frame(irg);
1272
	ir_node  *nomem = new_NoMem();
1273
1274
	ir_node  *st    = new_bd_sparc_St_imm(dbgi, block, value0, sp, nomem,
	                                      mode_gp, NULL, 0, true);
1275
	ir_mode  *mode;
1276
	ir_node  *ldf;
1277
	ir_node  *mem;
1278
1279
	set_irn_pinned(st, op_pin_state_floats);

1280
	if (value1 != NULL) {
1281
1282
		ir_node *st1 = new_bd_sparc_St_imm(dbgi, block, value1, sp, nomem,
		                                   mode_gp, NULL, 4, true);
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
		ir_node *in[2] = { st, st1 };
		ir_node *sync  = new_r_Sync(block, 2, in);
		set_irn_pinned(st1, op_pin_state_floats);
		mem  = sync;
		mode = mode_fp2;
	} else {
		mem  = st;
		mode = mode_fp;
	}

1293
	ldf = create_ldf(dbgi, block, sp, mem, mode, NULL, 0, true);
1294
1295
	set_irn_pinned(ldf, op_pin_state_floats);

1296
	return new_Proj(ldf, mode, pn_sparc_Ldf_res);
1297
1298
}

1299
1300
1301
static void bitcast_float_to_int(dbg_info *dbgi, ir_node *block,
                                 ir_node *node, ir_mode *float_mode,
                                 ir_node **result)
1302
1303
1304
1305
{
	ir_graph *irg   = current_ir_graph;
	ir_node  *stack = get_irg_frame(irg);
	ir_node  *nomem = new_NoMem();
1306
	ir_node  *stf   = create_stf(dbgi, block, node, stack, nomem, float_mode,
1307
	                             NULL, 0, true);
1308
	int       bits  = get_mode_size_bits(float_mode);
1309
1310
1311
	ir_node  *ld;
	set_irn_pinned(stf, op_pin_state_floats);

1312
	ld = new_bd_sparc_Ld_imm(dbgi, block, stack, stf, mode_gp, NULL, 0, true);
1313
	set_irn_pinned(ld, op_pin_state_floats);
1314
	result[0] = new_Proj(ld, mode_gp, pn_sparc_Ld_res);
1315

1316
	if (bits == 64) {
1317
1318
		ir_node *ld2 = new_bd_sparc_Ld_imm(dbgi, block, stack, stf, mode_gp,
		                                   NULL, 4, true);
1319
1320
1321
1322
1323
1324
1325
1326
1327
		set_irn_pinned(ld, op_pin_state_floats);
		result[1] = new_Proj(ld2, mode_gp, pn_sparc_Ld_res);

		arch_irn_add_flags(ld, sparc_arch_irn_flag_needs_64bit_spillslot);
		arch_irn_add_flags(ld2, sparc_arch_irn_flag_needs_64bit_spillslot);
	} else {
		assert(bits == 32);
		result[1] = NULL;
	}
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369