lower_dw.c 73 KB
Newer Older
Christian Würdig's avatar
Christian Würdig committed
1
/*
Michael Beck's avatar
Michael Beck committed
2
 * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
Christian Würdig's avatar
Christian Würdig committed
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 *
 * 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.
 */

Michael Beck's avatar
Michael Beck committed
20
21
22
23
24
25
/**
 * @file
 * @brief   Lower Double word operations, ie 64bit -> 32bit, 32bit -> 16bit etc.
 * @date    8.10.2004
 * @author  Michael Beck
 * @version $Id$
26
 */
Matthias Braun's avatar
Matthias Braun committed
27
#include "config.h"
28

29
#include <string.h>
30
#include <stdlib.h>
31
32
#include <assert.h>

33
#include "error.h"
34
#include "lowering.h"
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
#include "irnode_t.h"
#include "irgraph_t.h"
#include "irmode_t.h"
#include "iropt_t.h"
#include "irgmod.h"
#include "tv_t.h"
#include "dbginfo_t.h"
#include "iropt_dbg.h"
#include "irflag_t.h"
#include "firmstat.h"
#include "irgwalk.h"
#include "ircons.h"
#include "irflag.h"
#include "irtools.h"
#include "debug.h"
#include "set.h"
#include "pmap.h"
#include "pdeq.h"
Christian Würdig's avatar
Christian Würdig committed
53
#include "irdump.h"
54
#include "array_t.h"
55

Michael Beck's avatar
Michael Beck committed
56
57
58
59
/** A map from mode to a primitive type. */
static pmap *prim_types;

/** A map from (op, imode, omode) to Intrinsic functions entities. */
60
61
static set *intrinsic_fkt;

Michael Beck's avatar
Michael Beck committed
62
63
64
/** A map from (imode, omode) to conv function types. */
static set *conv_types;

65
66
67
68
/** A map from a method type to its lowered type. */
static pmap *lowered_type;

/** The types for the binop and unop intrinsics. */
Christian Würdig's avatar
Christian Würdig committed
69
static ir_type *binop_tp_u, *binop_tp_s, *unop_tp_u, *unop_tp_s, *shiftop_tp_u, *shiftop_tp_s, *tp_s, *tp_u;
70
71
72
73
74

/** the debug handle */
DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)

/**
Michael Beck's avatar
Michael Beck committed
75
 * An entry in the (op, imode, omode) -> entity map.
76
77
78
 */
typedef struct _op_mode_entry {
	const ir_op   *op;    /**< the op */
Michael Beck's avatar
Michael Beck committed
79
80
	const ir_mode *imode; /**< the input mode */
	const ir_mode *omode; /**< the output mode */
81
	ir_entity     *ent;   /**< the associated entity of this (op, imode, omode) triple */
82
83
} op_mode_entry_t;

Michael Beck's avatar
Michael Beck committed
84
85
86
87
88
89
90
91
92
/**
 * An entry in the (imode, omode) -> tp map.
 */
typedef struct _conv_tp_entry {
	const ir_mode *imode; /**< the input mode */
	const ir_mode *omode; /**< the output mode */
	ir_type       *mtd;   /**< the associated method type of this (imode, omode) pair */
} conv_tp_entry_t;

93
94
95
96
97
/**
 * Every double word node will be replaced,
 * we need some store to hold the replacement:
 */
typedef struct _node_entry_t {
98
99
	ir_node *low_word;    /**< the low word */
	ir_node *high_word;   /**< the high word */
100
101
102
} node_entry_t;

enum lower_flags {
103
104
	MUST_BE_LOWERED = 1,  /**< graph must be lowered */
	CF_CHANGED      = 2,  /**< control flow was changed */
105
106
107
108
109
110
111
112
};

/**
 * The lower environment.
 */
typedef struct _lower_env_t {
	node_entry_t **entries;       /**< entries per node */
	struct obstack obst;          /**< an obstack holding the temporary data */
Michael Beck's avatar
BugFix:    
Michael Beck committed
113
114
	tarval   *tv_mode_bytes;      /**< a tarval containing the number of bytes in the lowered modes */
	tarval   *tv_mode_bits;       /**< a tarval containing the number of bits in the lowered modes */
115
116
117
118
119
120
121
	pdeq     *waitq;              /**< a wait queue of all nodes that must be handled later */
	pmap     *proj_2_block;       /**< a map from ProjX to its destination blocks */
	const lwrdw_param_t *params;  /**< transformation parameter */
	unsigned flags;               /**< some flags */
	int      n_entries;           /**< number of entries */
} lower_env_t;

Michael Beck's avatar
Michael Beck committed
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
/**
 * Get a primitive mode for a mode.
 */
static ir_type *get_primitive_type(ir_mode *mode) {
	pmap_entry *entry = pmap_find(prim_types, mode);
	ir_type *tp;
	char buf[64];

	if (entry)
		return entry->value;

	snprintf(buf, sizeof(buf), "_prim_%s", get_mode_name(mode));
	tp = new_type_primitive(new_id_from_str(buf), mode);

	pmap_insert(prim_types, mode, tp);
	return tp;
138
}  /* get_primitive_type */
Michael Beck's avatar
Michael Beck committed
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167

/**
 * Create a method type for a Conv emulation from imode to omode.
 */
static ir_type *get_conv_type(ir_mode *imode, ir_mode *omode, lower_env_t *env) {
	conv_tp_entry_t key, *entry;
	ir_type *mtd;

	key.imode = imode;
	key.omode = omode;
	key.mtd   = NULL;

	entry = set_insert(conv_types, &key, sizeof(key), HASH_PTR(imode) ^ HASH_PTR(omode));
	if (! entry->mtd) {
		int n_param = 1, n_res = 1;
		char buf[64];

		if (imode == env->params->high_signed || imode == env->params->high_unsigned)
			n_param = 2;
		if (omode == env->params->high_signed || omode == env->params->high_unsigned)
			n_res = 2;

		/* create a new one */
		snprintf(buf, sizeof(buf), "LConv%s%s", get_mode_name(imode), get_mode_name(omode));
		mtd = new_type_method(new_id_from_str(buf), n_param, n_res);

		/* set param types and result types */
		n_param = 0;
		if (imode == env->params->high_signed) {
168
			set_method_param_type(mtd, n_param++, tp_u);
Michael Beck's avatar
Michael Beck committed
169
			set_method_param_type(mtd, n_param++, tp_s);
Michael Beck's avatar
BugFix:    
Michael Beck committed
170
		} else if (imode == env->params->high_unsigned) {
Michael Beck's avatar
Michael Beck committed
171
172
			set_method_param_type(mtd, n_param++, tp_u);
			set_method_param_type(mtd, n_param++, tp_u);
Michael Beck's avatar
BugFix:    
Michael Beck committed
173
		} else {
Michael Beck's avatar
Michael Beck committed
174
175
			ir_type *tp = get_primitive_type(imode);
			set_method_param_type(mtd, n_param++, tp);
Michael Beck's avatar
BugFix:    
Michael Beck committed
176
		}  /* if */
Michael Beck's avatar
Michael Beck committed
177
178
179

		n_res = 0;
		if (omode == env->params->high_signed) {
180
			set_method_res_type(mtd, n_res++, tp_u);
Michael Beck's avatar
Michael Beck committed
181
			set_method_res_type(mtd, n_res++, tp_s);
Michael Beck's avatar
BugFix:    
Michael Beck committed
182
		} else if (omode == env->params->high_unsigned) {
Michael Beck's avatar
Michael Beck committed
183
184
			set_method_res_type(mtd, n_res++, tp_u);
			set_method_res_type(mtd, n_res++, tp_u);
Michael Beck's avatar
BugFix:    
Michael Beck committed
185
		} else {
Michael Beck's avatar
Michael Beck committed
186
187
			ir_type *tp = get_primitive_type(omode);
			set_method_res_type(mtd, n_res++, tp);
Michael Beck's avatar
BugFix:    
Michael Beck committed
188
		}  /* if */
Michael Beck's avatar
Michael Beck committed
189
		entry->mtd = mtd;
Michael Beck's avatar
BugFix:    
Michael Beck committed
190
	} else {
Michael Beck's avatar
Michael Beck committed
191
		mtd = entry->mtd;
Michael Beck's avatar
BugFix:    
Michael Beck committed
192
	}  /* if */
Michael Beck's avatar
Michael Beck committed
193
	return mtd;
194
}  /* get_conv_type */
Michael Beck's avatar
Michael Beck committed
195

196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
/**
 * Add an additional control flow input to a block.
 * Patch all Phi nodes. The new Phi inputs are copied from
 * old input number nr.
 */
static void add_block_cf_input_nr(ir_node *block, int nr, ir_node *cf)
{
	int i, arity = get_irn_arity(block);
	ir_node **in, *phi;

	assert(nr < arity);

	NEW_ARR_A(ir_node *, in, arity + 1);
	for (i = 0; i < arity; ++i)
		in[i] = get_irn_n(block, i);
	in[i] = cf;

	set_irn_in(block, i + 1, in);

215
	for (phi = get_Block_phis(block); phi != NULL; phi = get_Phi_next(phi)) {
216
217
218
219
		for (i = 0; i < arity; ++i)
			in[i] = get_irn_n(phi, i);
		in[i] = in[nr];
		set_irn_in(phi, i + 1, in);
Michael Beck's avatar
BugFix:    
Michael Beck committed
220
	}  /* for */
221
}  /* add_block_cf_input_nr */
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236

/**
 * Add an additional control flow input to a block.
 * Patch all Phi nodes. The new Phi inputs are copied from
 * old input from cf tmpl.
 */
static void add_block_cf_input(ir_node *block, ir_node *tmpl, ir_node *cf)
{
	int i, arity = get_irn_arity(block);
	int nr = 0;

	for (i = 0; i < arity; ++i) {
		if (get_irn_n(block, i) == tmpl) {
			nr = i;
			break;
Michael Beck's avatar
BugFix:    
Michael Beck committed
237
238
		}  /* if */
	}  /* for */
239
240
	assert(i < arity);
	add_block_cf_input_nr(block, nr, cf);
241
}  /* add_block_cf_input */
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262

/**
 * Return the "operational" mode of a Firm node.
 */
static ir_mode *get_irn_op_mode(ir_node *node)
{
	switch (get_irn_opcode(node)) {
	case iro_Load:
		return get_Load_mode(node);
	case iro_Store:
		return get_irn_mode(get_Store_value(node));
	case iro_DivMod:
		return get_irn_mode(get_DivMod_left(node));
	case iro_Div:
		return get_irn_mode(get_Div_left(node));
	case iro_Mod:
		return get_irn_mode(get_Mod_left(node));
	case iro_Cmp:
		return get_irn_mode(get_Cmp_left(node));
	default:
		return get_irn_mode(node);
Michael Beck's avatar
BugFix:    
Michael Beck committed
263
	}  /* switch */
264
}  /* get_irn_op_mode */
265
266

/**
267
 * Walker, prepare the node links.
268
269
270
271
272
273
 */
static void prepare_links(ir_node *node, void *env)
{
	lower_env_t  *lenv = env;
	ir_mode      *mode = get_irn_op_mode(node);
	node_entry_t *link;
Michael Beck's avatar
Michael Beck committed
274
	int          i, idx;
275
276
277
278
279
280
281
282

	if (mode == lenv->params->high_signed ||
		mode == lenv->params->high_unsigned) {
		/* ok, found a node that will be lowered */
		link = obstack_alloc(&lenv->obst, sizeof(*link));

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

Michael Beck's avatar
Michael Beck committed
283
284
285
286
287
288
289
290
291
292
293
		idx = get_irn_idx(node);
		if (idx >= lenv->n_entries) {
			/* enlarge: this happens only for Rotl nodes which is RARELY */
			int old = lenv->n_entries;
			int n_idx = idx + (idx >> 3);

			ARR_RESIZE(node_entry_t *, lenv->entries, n_idx);
			memset(&lenv->entries[old], 0, (n_idx - old) * sizeof(lenv->entries[0]));
			lenv->n_entries = n_idx;
		}
		lenv->entries[idx] = link;
294
		lenv->flags |= MUST_BE_LOWERED;
295
	} else if (is_Conv(node)) {
296
297
298
299
300
301
		/* Conv nodes have two modes */
		ir_node *pred = get_Conv_op(node);
		mode = get_irn_mode(pred);

		if (mode == lenv->params->high_signed ||
			mode == lenv->params->high_unsigned) {
Michael Beck's avatar
BugFix:    
Michael Beck committed
302
			/* must lower this node either but don't need a link */
303
			lenv->flags |= MUST_BE_LOWERED;
Michael Beck's avatar
BugFix:    
Michael Beck committed
304
		}  /* if */
305
		return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
306
	}  /* if */
307
308
309
310
311
312
313
314

	if (is_Proj(node)) {
		/* link all Proj nodes to its predecessor:
		   Note that Tuple Proj's and its Projs are linked either. */
		ir_node *pred = get_Proj_pred(node);

		set_irn_link(node, get_irn_link(pred));
		set_irn_link(pred, node);
Michael Beck's avatar
BugFix:    
Michael Beck committed
315
	} else if (is_Phi(node)) {
316
317
		/* link all Phi nodes to its block */
		ir_node *block = get_nodes_block(node);
318
		add_Block_phi(block, node);
Michael Beck's avatar
BugFix:    
Michael Beck committed
319
	} else if (is_Block(node)) {
320
321
322
323
324
325
		/* fill the Proj -> Block map */
		for (i = get_Block_n_cfgpreds(node) - 1; i >= 0; --i) {
			ir_node *pred = get_Block_cfgpred(node, i);

			if (is_Proj(pred))
				pmap_insert(lenv->proj_2_block, pred, node);
Michael Beck's avatar
BugFix:    
Michael Beck committed
326
327
		}  /* for */
	}  /* if */
328
}  /* prepare_links */
329
330
331
332
333
334
335
336
337

/**
 * Translate a Constant: create two.
 */
static void lower_Const(ir_node *node, ir_mode *mode, lower_env_t *env) {
	tarval   *tv, *tv_l, *tv_h;
	ir_node  *low, *high;
	dbg_info *dbg = get_irn_dbg_info(node);
	int      idx;
338
	ir_graph *irg = current_ir_graph;
339
	ir_mode  *low_mode = env->params->low_unsigned;
340
341
342

	tv   = get_Const_tarval(node);

343
	tv_l = tarval_convert_to(tv, low_mode);
344
	low  = new_rd_Const(dbg, irg, tv_l);
345

Michael Beck's avatar
BugFix:    
Michael Beck committed
346
	tv_h = tarval_convert_to(tarval_shrs(tv, env->tv_mode_bits), mode);
347
	high = new_rd_Const(dbg, irg, tv_h);
348
349
350
351
352

	idx = get_irn_idx(node);
	assert(idx < env->n_entries);
	env->entries[idx]->low_word  = low;
	env->entries[idx]->high_word = high;
353
}  /* lower_Const */
354
355
356
357
358

/**
 * Translate a Load: create two.
 */
static void lower_Load(ir_node *node, ir_mode *mode, lower_env_t *env) {
359
	ir_mode  *low_mode = env->params->low_unsigned;
360
361
362
363
364
365
366
367
368
369
370
	ir_graph *irg = current_ir_graph;
	ir_node  *adr = get_Load_ptr(node);
	ir_node  *mem = get_Load_mem(node);
	ir_node  *low, *high, *proj;
	dbg_info *dbg;
	ir_node  *block = get_nodes_block(node);
	int      idx;

	if (env->params->little_endian) {
		low  = adr;
		high = new_r_Add(irg, block, adr,
371
			new_r_Const(irg, env->tv_mode_bytes),
372
			get_irn_mode(adr));
Michael Beck's avatar
BugFix:    
Michael Beck committed
373
	} else {
374
		low  = new_r_Add(irg, block, adr,
375
			new_r_Const(irg, env->tv_mode_bytes),
376
377
			get_irn_mode(adr));
		high = adr;
Michael Beck's avatar
BugFix:    
Michael Beck committed
378
	}  /* if */
379
380
381

	/* create two loads */
	dbg  = get_irn_dbg_info(node);
382
	low  = new_rd_Load(dbg, irg, block, mem,  low,  low_mode);
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
	proj = new_r_Proj(irg, block, low, mode_M, pn_Load_M);
	high = new_rd_Load(dbg, irg, block, proj, high, mode);

	set_Load_volatility(low,  get_Load_volatility(node));
	set_Load_volatility(high, get_Load_volatility(node));

	idx = get_irn_idx(node);
	assert(idx < env->n_entries);
	env->entries[idx]->low_word  = low;
	env->entries[idx]->high_word = high;

	for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
		idx = get_irn_idx(proj);

		switch (get_Proj_proj(proj)) {
		case pn_Load_M:         /* Memory result. */
			/* put it to the second one */
			set_Proj_pred(proj, high);
			break;
		case pn_Load_X_except:  /* Execution result if exception occurred. */
			/* put it to the first one */
			set_Proj_pred(proj, low);
			break;
		case pn_Load_res:       /* Result of load operation. */
			assert(idx < env->n_entries);
408
409
			env->entries[idx]->low_word  = new_r_Proj(irg, block, low,  low_mode, pn_Load_res);
			env->entries[idx]->high_word = new_r_Proj(irg, block, high, mode,     pn_Load_res);
410
411
412
			break;
		default:
			assert(0 && "unexpected Proj number");
Michael Beck's avatar
BugFix:    
Michael Beck committed
413
		}  /* switch */
414
415
416
		/* mark this proj: we have handled it already, otherwise we might fall into
		 * out new nodes. */
		mark_irn_visited(proj);
Michael Beck's avatar
BugFix:    
Michael Beck committed
417
	}  /* for */
418
}  /* lower_Load */
419
420
421
422
423
424
425
426
427
428
429

/**
 * Translate a Store: create two.
 */
static void lower_Store(ir_node *node, ir_mode *mode, lower_env_t *env) {
	ir_graph *irg;
	ir_node  *block, *adr, *mem;
	ir_node  *low, *high, *irn, *proj;
	dbg_info *dbg;
	int      idx;
	node_entry_t *entry;
Matthias Braun's avatar
Matthias Braun committed
430
431
	(void) node;
	(void) mode;
432
433
434
435
436
437
438
439
440

	irn = get_Store_value(node);
	entry = env->entries[get_irn_idx(irn)];
	assert(entry);

	if (! entry->low_word) {
		/* not ready yet, wait */
		pdeq_putr(env->waitq, node);
		return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
441
	}  /* if */
442
443
444
445
446
447
448
449
450

	irg = current_ir_graph;
	adr = get_Store_ptr(node);
	mem = get_Store_mem(node);
	block = get_nodes_block(node);

	if (env->params->little_endian) {
		low  = adr;
		high = new_r_Add(irg, block, adr,
451
			new_r_Const(irg, env->tv_mode_bytes),
452
			get_irn_mode(adr));
Michael Beck's avatar
BugFix:    
Michael Beck committed
453
	} else {
454
		low  = new_r_Add(irg, block, adr,
455
			new_r_Const(irg, env->tv_mode_bytes),
456
457
			get_irn_mode(adr));
		high = adr;
Michael Beck's avatar
BugFix:    
Michael Beck committed
458
	}  /* if */
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487

	/* create two Stores */
	dbg = get_irn_dbg_info(node);
	low  = new_rd_Store(dbg, irg, block, mem, low,  entry->low_word);
	proj = new_r_Proj(irg, block, low, mode_M, pn_Store_M);
	high = new_rd_Store(dbg, irg, block, proj, high, entry->high_word);

	set_Store_volatility(low,  get_Store_volatility(node));
	set_Store_volatility(high, get_Store_volatility(node));

	idx = get_irn_idx(node);
	assert(idx < env->n_entries);
	env->entries[idx]->low_word  = low;
	env->entries[idx]->high_word = high;

	for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
		idx = get_irn_idx(proj);

		switch (get_Proj_proj(proj)) {
		case pn_Store_M:         /* Memory result. */
			/* put it to the second one */
			set_Proj_pred(proj, high);
			break;
		case pn_Store_X_except:  /* Execution result if exception occurred. */
			/* put it to the first one */
			set_Proj_pred(proj, low);
			break;
		default:
			assert(0 && "unexpected Proj number");
Michael Beck's avatar
BugFix:    
Michael Beck committed
488
		}  /* switch */
489
490
491
		/* mark this proj: we have handled it already, otherwise we might fall into
		 * out new nodes. */
		mark_irn_visited(proj);
Michael Beck's avatar
BugFix:    
Michael Beck committed
492
	}  /* for */
493
}  /* lower_Store */
494
495
496

/**
 * Return a node containing the address of the intrinsic emulation function.
Michael Beck's avatar
Michael Beck committed
497
498
499
500
501
502
503
 *
 * @param method  the method type of the emulation function
 * @param op      the emulated ir_op
 * @param imode   the input mode of the emulated opcode
 * @param omode   the output mode of the emulated opcode
 * @param block   where the new mode is created
 * @param env     the lower environment
504
 */
Michael Beck's avatar
Michael Beck committed
505
506
507
static ir_node *get_intrinsic_address(ir_type *method, ir_op *op,
                                      ir_mode *imode, ir_mode *omode,
                                      ir_node *block, lower_env_t *env) {
508
	symconst_symbol sym;
509
	ir_entity *ent;
510
511
	op_mode_entry_t key, *entry;

Michael Beck's avatar
Michael Beck committed
512
513
514
515
	key.op    = op;
	key.imode = imode;
	key.omode = omode;
	key.ent   = NULL;
516

Michael Beck's avatar
Michael Beck committed
517
518
	entry = set_insert(intrinsic_fkt, &key, sizeof(key),
				HASH_PTR(op) ^ HASH_PTR(imode) ^ (HASH_PTR(omode) << 8));
519
520
	if (! entry->ent) {
		/* create a new one */
Michael Beck's avatar
Michael Beck committed
521
		ent = env->params->create_intrinsic(method, op, imode, omode, env->params->ctx);
522
523
524

		assert(ent && "Intrinsic creator must return an entity");
		entry->ent = ent;
Michael Beck's avatar
BugFix:    
Michael Beck committed
525
	} else {
526
		ent = entry->ent;
Michael Beck's avatar
BugFix:    
Michael Beck committed
527
	}  /* if */
528
	sym.entity_p = ent;
529
	return new_r_SymConst(current_ir_graph, block, mode_P_code, sym, symconst_addr_ent);
530
}  /* get_intrinsic_address */
531
532
533
534
535
536
537
538
539

/**
 * Translate a Div.
 *
 * Create an intrinsic Call.
 */
static void lower_Div(ir_node *node, ir_mode *mode, lower_env_t *env) {
	ir_node  *block, *irn, *call, *proj;
	ir_node  *in[4];
Michael Beck's avatar
Michael Beck committed
540
	ir_mode  *opmode;
541
542
543
	dbg_info *dbg;
	ir_type  *mtp;
	int      idx;
544
	ir_graph *irg;
545
546
547
548
549
550
551
552
553
554
	node_entry_t *entry;

	irn   = get_Div_left(node);
	entry = env->entries[get_irn_idx(irn)];
	assert(entry);

	if (! entry->low_word) {
		/* not ready yet, wait */
		pdeq_putr(env->waitq, node);
		return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
555
	}  /* if */
556
557
558
559
560
561
562
563
564
565
566
567

	in[0] = entry->low_word;
	in[1] = entry->high_word;

	irn   = get_Div_right(node);
	entry = env->entries[get_irn_idx(irn)];
	assert(entry);

	if (! entry->low_word) {
		/* not ready yet, wait */
		pdeq_putr(env->waitq, node);
		return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
568
	}  /* if */
569
570
571
572

	in[2] = entry->low_word;
	in[3] = entry->high_word;

573
	dbg   = get_irn_dbg_info(node);
574
	block = get_nodes_block(node);
575
	irg   = current_ir_graph;
576
577

	mtp = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
Michael Beck's avatar
Michael Beck committed
578
579
	opmode = get_irn_op_mode(node);
	irn = get_intrinsic_address(mtp, get_irn_op(node), opmode, opmode, block, env);
580
	call = new_rd_Call(dbg, irg, block, get_Div_mem(node),
581
582
		irn, 4, in, mtp);
	set_irn_pinned(call, get_irn_pinned(node));
583
	irn = new_r_Proj(irg, block, call, mode_T, pn_Call_T_result);
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599

	for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
		switch (get_Proj_proj(proj)) {
		case pn_Div_M:         /* Memory result. */
			/* reroute to the call */
			set_Proj_pred(proj, call);
			set_Proj_proj(proj, pn_Call_M_except);
			break;
		case pn_Div_X_except:  /* Execution result if exception occurred. */
			/* reroute to the call */
			set_Proj_pred(proj, call);
			set_Proj_proj(proj, pn_Call_X_except);
			break;
		case pn_Div_res:       /* Result of computation. */
			idx = get_irn_idx(proj);
			assert(idx < env->n_entries);
600
601
			env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, irn, env->params->low_unsigned, 0);
			env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, irn, mode,                      1);
602
603
604
			break;
		default:
			assert(0 && "unexpected Proj number");
Michael Beck's avatar
BugFix:    
Michael Beck committed
605
		}  /* switch */
606
607
608
		/* mark this proj: we have handled it already, otherwise we might fall into
		 * out new nodes. */
		mark_irn_visited(proj);
Michael Beck's avatar
BugFix:    
Michael Beck committed
609
	}  /* for */
610
}  /* lower_Div */
611
612
613
614
615
616
617
618
619

/**
 * Translate a Mod.
 *
 * Create an intrinsic Call.
 */
static void lower_Mod(ir_node *node, ir_mode *mode, lower_env_t *env) {
	ir_node  *block, *proj, *irn, *call;
	ir_node  *in[4];
Michael Beck's avatar
Michael Beck committed
620
	ir_mode  *opmode;
621
622
623
	dbg_info *dbg;
	ir_type  *mtp;
	int      idx;
624
	ir_graph *irg;
625
626
627
628
629
630
631
632
633
634
	node_entry_t *entry;

	irn   = get_Mod_left(node);
	entry = env->entries[get_irn_idx(irn)];
	assert(entry);

	if (! entry->low_word) {
		/* not ready yet, wait */
		pdeq_putr(env->waitq, node);
		return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
635
	}  /* if */
636
637
638
639
640
641
642
643
644
645
646
647

	in[0] = entry->low_word;
	in[1] = entry->high_word;

	irn   = get_Mod_right(node);
	entry = env->entries[get_irn_idx(irn)];
	assert(entry);

	if (! entry->low_word) {
		/* not ready yet, wait */
		pdeq_putr(env->waitq, node);
		return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
648
	}  /* if */
649
650
651
652

	in[2] = entry->low_word;
	in[3] = entry->high_word;

653
	dbg   = get_irn_dbg_info(node);
654
	block = get_nodes_block(node);
655
	irg   = current_ir_graph;
656
657

	mtp = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
Michael Beck's avatar
Michael Beck committed
658
659
	opmode = get_irn_op_mode(node);
	irn = get_intrinsic_address(mtp, get_irn_op(node), opmode, opmode, block, env);
660
	call = new_rd_Call(dbg, irg, block, get_Mod_mem(node),
661
662
		irn, 4, in, mtp);
	set_irn_pinned(call, get_irn_pinned(node));
663
	irn = new_r_Proj(irg, block, call, mode_T, pn_Call_T_result);
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679

	for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
		switch (get_Proj_proj(proj)) {
		case pn_Mod_M:         /* Memory result. */
			/* reroute to the call */
			set_Proj_pred(proj, call);
			set_Proj_proj(proj, pn_Call_M_except);
			break;
		case pn_Mod_X_except:  /* Execution result if exception occurred. */
			/* reroute to the call */
			set_Proj_pred(proj, call);
			set_Proj_proj(proj, pn_Call_X_except);
			break;
		case pn_Mod_res:       /* Result of computation. */
			idx = get_irn_idx(proj);
			assert(idx < env->n_entries);
680
681
			env->entries[idx]->low_word  = new_r_Proj(irg, block, irn, env->params->low_unsigned, 0);
			env->entries[idx]->high_word = new_r_Proj(irg, block, irn, mode,                      1);
682
683
684
			break;
		default:
			assert(0 && "unexpected Proj number");
Michael Beck's avatar
BugFix:    
Michael Beck committed
685
		}  /* switch */
686
687
688
		/* mark this proj: we have handled it already, otherwise we might fall into
		 * out new nodes. */
		mark_irn_visited(proj);
Michael Beck's avatar
BugFix:    
Michael Beck committed
689
	}  /* for */
690
}  /* lower_Mod */
691
692
693
694
695
696
697

/**
 * Translate a DivMod.
 *
 * Create two intrinsic Calls.
 */
static void lower_DivMod(ir_node *node, ir_mode *mode, lower_env_t *env) {
Matthias Braun's avatar
Matthias Braun committed
698
699
700
	ir_node  *block, *proj, *irn, *mem, *callDiv, *callMod;
	ir_node  *resDiv = NULL;
	ir_node  *resMod = NULL;
701
	ir_node  *in[4];
Michael Beck's avatar
Michael Beck committed
702
	ir_mode  *opmode;
703
704
705
706
707
	dbg_info *dbg;
	ir_type  *mtp;
	int      idx;
	node_entry_t *entry;
	unsigned flags = 0;
708
	ir_graph *irg;
709
710
711
712
713
714
715

	/* check if both results are needed */
	for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
		switch (get_Proj_proj(proj)) {
		case pn_DivMod_res_div: flags |= 1; break;
		case pn_DivMod_res_mod: flags |= 2; break;
		default: break;
Michael Beck's avatar
BugFix:    
Michael Beck committed
716
717
		}  /* switch */
	}  /* for */
718
719
720
721
722
723
724
725
726

	irn   = get_DivMod_left(node);
	entry = env->entries[get_irn_idx(irn)];
	assert(entry);

	if (! entry->low_word) {
		/* not ready yet, wait */
		pdeq_putr(env->waitq, node);
		return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
727
	}  /* if */
728
729
730
731
732
733
734
735
736
737
738
739

	in[0] = entry->low_word;
	in[1] = entry->high_word;

	irn   = get_DivMod_right(node);
	entry = env->entries[get_irn_idx(irn)];
	assert(entry);

	if (! entry->low_word) {
		/* not ready yet, wait */
		pdeq_putr(env->waitq, node);
		return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
740
	}  /* if */
741
742
743
744

	in[2] = entry->low_word;
	in[3] = entry->high_word;

745
	dbg   = get_irn_dbg_info(node);
746
	block = get_nodes_block(node);
747
	irg   = current_ir_graph;
748
749
750
751
752
753

	mem = get_DivMod_mem(node);

	callDiv = callMod = NULL;
	mtp = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
	if (flags & 1) {
Michael Beck's avatar
Michael Beck committed
754
755
		opmode = get_irn_op_mode(node);
		irn = get_intrinsic_address(mtp, op_Div, opmode, opmode, block, env);
756
		callDiv = new_rd_Call(dbg, irg, block, mem,
757
758
			irn, 4, in, mtp);
		set_irn_pinned(callDiv, get_irn_pinned(node));
759
		resDiv = new_r_Proj(irg, block, callDiv, mode_T, pn_Call_T_result);
Michael Beck's avatar
BugFix:    
Michael Beck committed
760
	}  /* if */
761
762
	if (flags & 2) {
		if (flags & 1)
763
			mem = new_r_Proj(irg, block, callDiv, mode_M, pn_Call_M);
Michael Beck's avatar
Michael Beck committed
764
765
		opmode = get_irn_op_mode(node);
		irn = get_intrinsic_address(mtp, op_Mod, opmode, opmode, block, env);
766
		callMod = new_rd_Call(dbg, irg, block, mem,
767
768
			irn, 4, in, mtp);
		set_irn_pinned(callMod, get_irn_pinned(node));
769
		resMod = new_r_Proj(irg, block, callMod, mode_T, pn_Call_T_result);
Michael Beck's avatar
BugFix:    
Michael Beck committed
770
	}  /* if */
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786

	for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
		switch (get_Proj_proj(proj)) {
		case pn_DivMod_M:         /* Memory result. */
			/* reroute to the first call */
			set_Proj_pred(proj, callDiv ? callDiv : (callMod ? callMod : mem));
			set_Proj_proj(proj, pn_Call_M_except);
			break;
		case pn_DivMod_X_except:  /* Execution result if exception occurred. */
			/* reroute to the first call */
			set_Proj_pred(proj, callDiv ? callDiv : (callMod ? callMod : mem));
			set_Proj_proj(proj, pn_Call_X_except);
			break;
		case pn_DivMod_res_div:   /* Result of Div. */
			idx = get_irn_idx(proj);
			assert(idx < env->n_entries);
787
788
			env->entries[idx]->low_word  = new_r_Proj(irg, block, resDiv, env->params->low_unsigned, 0);
			env->entries[idx]->high_word = new_r_Proj(irg, block, resDiv, mode,                      1);
789
790
791
			break;
		case pn_DivMod_res_mod:   /* Result of Mod. */
			idx = get_irn_idx(proj);
792
793
			env->entries[idx]->low_word  = new_r_Proj(irg, block, resMod, env->params->low_unsigned, 0);
			env->entries[idx]->high_word = new_r_Proj(irg, block, resMod, mode,                      1);
794
795
796
			break;
		default:
			assert(0 && "unexpected Proj number");
Michael Beck's avatar
BugFix:    
Michael Beck committed
797
		}  /* switch */
798
799
800
		/* mark this proj: we have handled it already, otherwise we might fall into
		 * out new nodes. */
		mark_irn_visited(proj);
Michael Beck's avatar
BugFix:    
Michael Beck committed
801
	}  /* for */
802
}  /* lower_DivMod */
803
804
805
806
807
808
809
810
811
812
813
814

/**
 * Translate a Binop.
 *
 * Create an intrinsic Call.
 */
static void lower_Binop(ir_node *node, ir_mode *mode, lower_env_t *env) {
	ir_node  *block, *irn;
	ir_node  *in[4];
	dbg_info *dbg;
	ir_type  *mtp;
	int      idx;
815
	ir_graph *irg;
816
817
818
819
820
821
822
823
824
825
	node_entry_t *entry;

	irn   = get_binop_left(node);
	entry = env->entries[get_irn_idx(irn)];
	assert(entry);

	if (! entry->low_word) {
		/* not ready yet, wait */
		pdeq_putr(env->waitq, node);
		return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
826
	}  /* if */
827
828
829
830
831
832
833
834
835
836
837
838

	in[0] = entry->low_word;
	in[1] = entry->high_word;

	irn   = get_binop_right(node);
	entry = env->entries[get_irn_idx(irn)];
	assert(entry);

	if (! entry->low_word) {
		/* not ready yet, wait */
		pdeq_putr(env->waitq, node);
		return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
839
	}  /* if */
840
841
842
843

	in[2] = entry->low_word;
	in[3] = entry->high_word;

844
	dbg   = get_irn_dbg_info(node);
845
	block = get_nodes_block(node);
846
	irg   = current_ir_graph;
847
848

	mtp = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
Michael Beck's avatar
Michael Beck committed
849
	irn = get_intrinsic_address(mtp, get_irn_op(node), mode, mode, block, env);
850
	irn = new_rd_Call(dbg, irg, block, get_irg_no_mem(current_ir_graph),
851
852
		irn, 4, in, mtp);
	set_irn_pinned(irn, get_irn_pinned(node));
853
	irn = new_r_Proj(irg, block, irn, mode_T, pn_Call_T_result);
854
855
856

	idx = get_irn_idx(node);
	assert(idx < env->n_entries);
857
858
	env->entries[idx]->low_word  = new_r_Proj(irg, block, irn, env->params->low_unsigned, 0);
	env->entries[idx]->high_word = new_r_Proj(irg, block, irn, mode,                      1);
859
}  /* lower_Binop */
860

Christian Würdig's avatar
Christian Würdig committed
861
862
863
864
865
866
867
868
869
870
871
/**
 * Translate a Shiftop.
 *
 * Create an intrinsic Call.
 */
static void lower_Shiftop(ir_node *node, ir_mode *mode, lower_env_t *env) {
	ir_node  *block, *irn;
	ir_node  *in[3];
	dbg_info *dbg;
	ir_type  *mtp;
	int      idx;
872
	ir_graph *irg;
Christian Würdig's avatar
Christian Würdig committed
873
874
875
876
877
878
879
880
881
882
	node_entry_t *entry;

	irn   = get_binop_left(node);
	entry = env->entries[get_irn_idx(irn)];
	assert(entry);

	if (! entry->low_word) {
		/* not ready yet, wait */
		pdeq_putr(env->waitq, node);
		return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
883
	}  /* if */
Christian Würdig's avatar
Christian Würdig committed
884
885
886
887
888
889
890
891
892

	in[0] = entry->low_word;
	in[1] = entry->high_word;

	/* The shift count is always mode_Iu in firm, so there is no need for lowering */
	in[2] = get_binop_right(node);

	dbg   = get_irn_dbg_info(node);
	block = get_nodes_block(node);
893
	irg  = current_ir_graph;
Christian Würdig's avatar
Christian Würdig committed
894
895
896

	mtp = mode_is_signed(mode) ? shiftop_tp_s : shiftop_tp_u;
	irn = get_intrinsic_address(mtp, get_irn_op(node), mode, mode, block, env);
897
	irn = new_rd_Call(dbg, irg, block, get_irg_no_mem(current_ir_graph),
Christian Würdig's avatar
Christian Würdig committed
898
899
		irn, 3, in, mtp);
	set_irn_pinned(irn, get_irn_pinned(node));
900
	irn = new_r_Proj(irg, block, irn, mode_T, pn_Call_T_result);
Christian Würdig's avatar
Christian Würdig committed
901
902
903

	idx = get_irn_idx(node);
	assert(idx < env->n_entries);
904
905
	env->entries[idx]->low_word  = new_r_Proj(irg, block, irn, env->params->low_unsigned, 0);
	env->entries[idx]->high_word = new_r_Proj(irg, block, irn, mode,                      1);
906
}  /* lower_Shiftop */
Christian Würdig's avatar
Christian Würdig committed
907

Michael Beck's avatar
Michael Beck committed
908
909
910
911
/**
 * Translate a Shr and handle special cases.
 */
static void lower_Shr(ir_node *node, ir_mode *mode, lower_env_t *env) {
912
913
	ir_node  *right = get_Shr_right(node);
	ir_graph *irg = current_ir_graph;
Michael Beck's avatar
Michael Beck committed
914
915
916
917
918

	if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
		tarval *tv = get_Const_tarval(right);

		if (tarval_is_long(tv) &&
919
		    get_tarval_long(tv) >= (long)get_mode_size_bits(mode)) {
Michael Beck's avatar
Michael Beck committed
920
921
			ir_node *block = get_nodes_block(node);
			ir_node *left = get_Shr_left(node);
922
923
			ir_node *c;
			long shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
Michael Beck's avatar
Michael Beck committed
924
925
926
927
928
			int idx = get_irn_idx(left);

			left = env->entries[idx]->high_word;
			idx = get_irn_idx(node);

929
			if (shf_cnt > 0) {
930
				c = new_r_Const_long(irg, env->params->low_unsigned, shf_cnt);
931
				env->entries[idx]->low_word = new_r_Shr(irg, block, left, c, mode);
Michael Beck's avatar
BugFix:    
Michael Beck committed
932
			} else {
933
				env->entries[idx]->low_word = left;
Michael Beck's avatar
BugFix:    
Michael Beck committed
934
			}  /* if */
935
			env->entries[idx]->high_word = new_r_Const(irg, get_mode_null(mode));
Michael Beck's avatar
Michael Beck committed
936
937

			return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
938
939
		}  /* if */
	}  /* if */
Michael Beck's avatar
Michael Beck committed
940
	lower_Shiftop(node, mode, env);
941
}  /* lower_Shr */
Michael Beck's avatar
Michael Beck committed
942
943
944
945
946

/**
 * Translate a Shl and handle special cases.
 */
static void lower_Shl(ir_node *node, ir_mode *mode, lower_env_t *env) {
947
948
	ir_node  *right = get_Shl_right(node);
	ir_graph *irg = current_ir_graph;
Michael Beck's avatar
Michael Beck committed
949
950
951
952
953

	if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
		tarval *tv = get_Const_tarval(right);

		if (tarval_is_long(tv) &&
954
		    get_tarval_long(tv) >= (long)get_mode_size_bits(mode)) {
955
			ir_mode *mode_l;
Michael Beck's avatar
Michael Beck committed
956
957
			ir_node *block = get_nodes_block(node);
			ir_node *left = get_Shl_left(node);
958
959
			ir_node *c;
			long shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
Michael Beck's avatar
Michael Beck committed
960
961
			int idx = get_irn_idx(left);

962
			left = new_r_Conv(irg, block, env->entries[idx]->low_word, mode);
Michael Beck's avatar
Michael Beck committed
963
964
			idx = get_irn_idx(node);

965
			mode_l = env->params->low_unsigned;
966
			if (shf_cnt > 0) {
967
				c = new_r_Const_long(irg, mode_l, shf_cnt);
968
				env->entries[idx]->high_word = new_r_Shl(irg, block, left, c, mode);
Michael Beck's avatar
BugFix:    
Michael Beck committed
969
			} else {
970
				env->entries[idx]->high_word = left;
Michael Beck's avatar
BugFix:    
Michael Beck committed
971
			}  /* if */
972
			env->entries[idx]->low_word  = new_r_Const(irg, get_mode_null(mode_l));
Michael Beck's avatar
Michael Beck committed
973
974

			return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
975
976
		}  /* if */
	}  /* if */
Michael Beck's avatar
Michael Beck committed
977
	lower_Shiftop(node, mode, env);
978
}  /* lower_Shl */
Michael Beck's avatar
Michael Beck committed
979
980
981
982
983

/**
 * Translate a Shrs and handle special cases.
 */
static void lower_Shrs(ir_node *node, ir_mode *mode, lower_env_t *env) {
984
985
	ir_node  *right = get_Shrs_right(node);
	ir_graph *irg = current_ir_graph;
Michael Beck's avatar
Michael Beck committed
986
987
988
989
990

	if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
		tarval *tv = get_Const_tarval(right);

		if (tarval_is_long(tv) &&
991
		    get_tarval_long(tv) >= (long)get_mode_size_bits(mode)) {
992
993
994
995
			ir_node *block   = get_nodes_block(node);
			ir_node *left    = get_Shrs_left(node);
			long     shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
			int      idx     = get_irn_idx(left);
996
			ir_mode *mode_l;
997
			ir_node *low;
Michael Beck's avatar
Michael Beck committed
998
999
1000
1001
1002
			ir_node *c;

			left = env->entries[idx]->high_word;
			idx = get_irn_idx(node);

1003
			mode_l = env->params->low_unsigned;
1004
			if (shf_cnt > 0) {
1005
				c   = new_r_Const_long(irg, mode_l, shf_cnt);
1006
				low = new_r_Shrs(irg, block, left, c, mode);
Michael Beck's avatar
BugFix:    
Michael Beck committed
1007
			} else {
1008
				low = left;
Michael Beck's avatar
BugFix:    
Michael Beck committed
1009
			}  /* if */
1010
1011
			/* low word is expected to have mode_l */
			env->entries[idx]->low_word = new_r_Conv(irg, block, low, mode_l);
1012

1013
			c = new_r_Const_long(irg, mode_l, get_mode_size_bits(mode) - 1);
1014
			env->entries[idx]->high_word = new_r_Shrs(irg, block, left, c, mode);
Michael Beck's avatar
Michael Beck committed
1015
1016

			return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
1017
1018
		}  /* if */
	}  /* if */
Michael Beck's avatar
Michael Beck committed
1019
	lower_Shiftop(node, mode, env);
1020
}  /* lower_Shrs */
Michael Beck's avatar
Michael Beck committed
1021
1022

/**
Michael Beck's avatar
Michael Beck committed
1023
 * Rebuild Rotl nodes into Or(Shl, Shr) and prepare all nodes.
Michael Beck's avatar
Michael Beck committed
1024
 */
Michael Beck's avatar
Michael Beck committed
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
static void prepare_links_and_handle_rotl(ir_node *node, void *env) {
	lower_env_t *lenv = env;

	if (is_Rotl(node)) {
		ir_mode *mode = get_irn_op_mode(node);
			if (mode == lenv->params->high_signed ||
			    mode == lenv->params->high_unsigned) {
				ir_node  *right = get_Rotl_right(node);
				ir_node  *left, *shl, *shr, *or, *block, *sub, *c;
				ir_mode  *omode, *rmode;
				ir_graph *irg;
				dbg_info *dbg;
				optimization_state_t state;

				if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
					tarval *tv = get_Const_tarval(right);

					if (tarval_is_long(tv) &&
					    get_tarval_long(tv) == (long)get_mode_size_bits(mode)) {
						/* will be optimized in lower_Rotl() */
						return;
					}
				}

				/* replace the Rotl(x,y) by an Or(Shl(x,y), Shr(x,64-y)) and lower those */
				dbg   = get_irn_dbg_info(node);
				omode = get_irn_mode(node);
				left  = get_Rotl_left(node);
				irg   = current_ir_graph;
				block = get_nodes_block(node);
				shl   = new_rd_Shl(dbg, irg, block, left, right, omode);
				rmode = get_irn_mode(right);
				c     = new_Const_long(rmode, get_mode_size_bits(omode));
				sub   = new_rd_Sub(dbg, irg, block, c, right, rmode);
				shr   = new_rd_Shr(dbg, irg, block, left, sub, omode);

				/* optimization must be switched off here, or we will get the Rotl back */
				save_optimization_state(&state);
				set_opt_algebraic_simplification(0);
				or = new_rd_Or(dbg, irg, block, shl, shr, omode);
				restore_optimization_state(&state);

				exchange(node, or);

				/* do lowering on the new nodes */
				prepare_links(shl, env);
				prepare_links(c, env);
				prepare_links(sub, env);
				prepare_links(shr, env);
				prepare_links(or, env);
			}
	} else {
		prepare_links(node, env);
	}
}
Michael Beck's avatar
Michael Beck committed
1080

Michael Beck's avatar
Michael Beck committed
1081
1082
1083
1084
1085
1086
1087
1088
/**
 * Translate a special case Rotl(x, sizeof(w)).
 */
static void lower_Rotl(ir_node *node, ir_mode *mode, lower_env_t *env) {
	ir_node *right = get_Rotl_right(node);
	ir_node *left = get_Rotl_left(node);
	ir_node *h, *l;
	int idx = get_irn_idx(left);
Matthias Braun's avatar
Matthias Braun committed
1089
1090
	(void) right;
	(void) mode;
Michael Beck's avatar
Michael Beck committed
1091

Michael Beck's avatar
Michael Beck committed
1092
1093
1094
	assert(get_mode_arithmetic(mode) == irma_twos_complement &&
	       is_Const(right) && tarval_is_long(get_Const_tarval(right)) &&
	       get_tarval_long(get_Const_tarval(right)) == (long)get_mode_size_bits(mode));
Michael Beck's avatar
Michael Beck committed
1095

Michael Beck's avatar
Michael Beck committed
1096
1097
1098
	l = env->entries[idx]->low_word;
	h = env->entries[idx]->high_word;
	idx = get_irn_idx(node);
Michael Beck's avatar
Michael Beck committed
1099

Michael Beck's avatar
Michael Beck committed
1100
1101
1102
	env->entries[idx]->low_word  = h;
	env->entries[idx]->high_word = l;
}  /* lower_Rotl */
1103

1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
/**
 * Translate an Unop.
 *
 * Create an intrinsic Call.
 */
static void lower_Unop(ir_node *node, ir_mode *mode, lower_env_t *env) {
	ir_node  *block, *irn;
	ir_node  *in[2];
	dbg_info *dbg;
	ir_type  *mtp;
	int      idx;
1115
	ir_graph *irg;
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
	node_entry_t *entry;

	irn   = get_unop_op(node);
	entry = env->entries[get_irn_idx(irn)];
	assert(entry);

	if (! entry->low_word) {
		/* not ready yet, wait */
		pdeq_putr(env->waitq, node);
		return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
1126
	}  /* if */
1127
1128
1129
1130

	in[0] = entry->low_word;
	in[1] = entry->high_word;

1131
	dbg   = get_irn_dbg_info(node);
1132
	block = get_nodes_block(node);
1133
	irg   = current_ir_graph;
1134
1135

	mtp = mode_is_signed(mode) ? unop_tp_s : unop_tp_u;
Michael Beck's avatar
Michael Beck committed
1136
	irn = get_intrinsic_address(mtp, get_irn_op(node), mode, mode, block, env);
1137
	irn = new_rd_Call(dbg, irg, block, get_irg_no_mem(current_ir_graph),
1138
1139
		irn, 2, in, mtp);
	set_irn_pinned(irn, get_irn_pinned(node));
1140
	irn = new_r_Proj(irg, block, irn, mode_T, pn_Call_T_result);
1141
1142
1143

	idx = get_irn_idx(node);
	assert(idx < env->n_entries);
1144
1145
	env->entries[idx]->low_word  = new_r_Proj(irg, block, irn, env->params->low_unsigned, 0);
	env->entries[idx]->high_word = new_r_Proj(irg, block, irn, mode,                      1);
1146
}  /* lower_Unop */
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158

/**
 * Translate a logical Binop.
 *
 * Create two logical Binops.
 */
static void lower_Binop_logical(ir_node *node, ir_mode *mode, lower_env_t *env,
								ir_node *(*constr_rd)(dbg_info *db, ir_graph *irg, ir_node *block, ir_node *op1, ir_node *op2, ir_mode *mode) ) {
	ir_node  *block, *irn;
	ir_node  *lop_l, *lop_h, *rop_l, *rop_h;
	dbg_info *dbg;
	int      idx;
1159
	ir_graph *irg;
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
	node_entry_t *entry;

	irn   = get_binop_left(node);
	entry = env->entries[get_irn_idx(irn)];
	assert(entry);

	if (! entry->low_word) {
		/* not ready yet, wait */
		pdeq_putr(env->waitq, node);
		return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
1170
	}  /* if */
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182

	lop_l = entry->low_word;
	lop_h = entry->high_word;

	irn   = get_binop_right(node);
	entry = env->entries[get_irn_idx(irn)];
	assert(entry);

	if (! entry->low_word) {
		/* not ready yet, wait */
		pdeq_putr(env->waitq, node);
		return;
Michael Beck's avatar
BugFix:    
Michael Beck committed
1183
	}  /* if */
1184
1185
1186
1187
1188
1189
1190
1191
1192

	rop_l = entry->low_word;
	rop_h = entry->high_word;

	dbg = get_irn_dbg_info(node);
	block = get_nodes_block(node);

	idx = get_irn_idx(node);
	assert(idx < env->n_entries);
1193
	irg = current_ir_graph;
1194
	env->entries[idx]->low_word  = constr_rd(dbg, irg, block, lop_l, rop_l, env->params->low_unsigned);
1195
1196
	env->entries[idx]->high_word = constr_rd(dbg, irg, block, lop_h, rop_h, mode);
}  /* lower_Binop_logical */
Michael Beck's avatar