ia32_intrinsics.c 28 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.
 */

20
/**
Christian Würdig's avatar
Christian Würdig committed
21
22
23
24
25
 * @file
 * @brief       This file implements the mapping of 64Bit intrinsic
 *              functions to code or library calls.
 * @author      Michael Beck
 * @version     $Id$
26
 */
27
28
#include "config.h"

29
#include "iredges.h"
30
#include "irgmod.h"
31
32
33
34
#include "irop.h"
#include "irnode_t.h"
#include "ircons.h"
#include "irprog_t.h"
35
#include "lowering.h"
36
#include "array.h"
Matthias Braun's avatar
Matthias Braun committed
37
#include "error.h"
38

39
#include "ia32_new_nodes.h"
40
41
#include "bearch_ia32_t.h"
#include "gen_ia32_regalloc_if.h"
Matthias Braun's avatar
Matthias Braun committed
42
#include "begnuas.h"
43

44
45
46
/** The array of all intrinsics that must be mapped. */
static i_record *intrinsics;

47
/** An array to cache all entities. */
48
static ir_entity *i_ents[iro_Last + 1];
49

50
/*
51
52
53
54
 * Maps all intrinsic calls that the backend support
 * and map all instructions the backend did not support
 * to runtime calls.
 */
55
56
void ia32_handle_intrinsics(void)
{
Michael Beck's avatar
Michael Beck committed
57
58
59
	if (intrinsics && ARR_LEN(intrinsics) > 0) {
		lower_intrinsics(intrinsics, ARR_LEN(intrinsics), /*part_block_used=*/1);
	}
60
61
62
63
64
65
66
}

#define BINOP_Left_Low   0
#define BINOP_Left_High  1
#define BINOP_Right_Low  2
#define BINOP_Right_High 3

67
68
69
70
71
72
73
/**
 * Reroute edges from the pn_Call_T_result proj of a call.
 *
 * @param proj   the pn_Call_T_result Proj
 * @param l_res  the lower 32 bit result
 * @param h_res  the upper 32 bit result or NULL
 */
Matthias Braun's avatar
Matthias Braun committed
74
static void reroute_result(ir_node *proj, ir_node *l_res, ir_node *h_res)
75
{
76
77
78
79
80
81
82
	const ir_edge_t *edge, *next;

	foreach_out_edge_safe(proj, edge, next) {
		ir_node *proj = get_edge_src_irn(edge);
		long    pn    = get_Proj_proj(proj);

		if (pn == 0) {
Matthias Braun's avatar
Matthias Braun committed
83
			edges_reroute(proj, l_res);
84
		} else if (pn == 1 && h_res != NULL) {
Matthias Braun's avatar
Matthias Braun committed
85
			edges_reroute(proj, h_res);
86
87
88
89
90
91
		} else {
			panic("Unsupported Result-Proj from Call found");
		}
	}
}

92
93
/**
 * Replace a call be a tuple of l_res, h_res.
94
95
96
97
98
99
 *
 * @param call   the call node to replace
 * @param l_res  the lower 32 bit result
 * @param h_res  the upper 32 bit result or NULL
 * @param irg    the graph to replace on
 * @param block  the block to replace on (always the call block)
100
 */
101
102
static void resolve_call(ir_node *call, ir_node *l_res, ir_node *h_res, ir_graph *irg, ir_node *block)
{
103
	ir_node *jmp, *res, *in[2];
Christoph Mallon's avatar
Christoph Mallon committed
104
105
	ir_node *bad   = get_irg_bad(irg);
	ir_node *nomem = get_irg_no_mem(irg);
106
	int     old_cse;
107

108
109
110
111
112
113
	if (edges_activated(irg)) {
		/* use rerouting to prevent some warning in the backend */
		const ir_edge_t *edge, *next;

		foreach_out_edge_safe(call, edge, next) {
			ir_node *proj = get_edge_src_irn(edge);
114
			pn_Call pn    = (pn_Call)get_Proj_proj(proj);
115
116
117
118
119
120
121
122
123
124
125

			switch (pn) {
			case pn_Call_X_regular:
				/* Beware:
				 * We do not check here if this call really has exception and regular Proj's.
				 * new_r_Jmp might than be CSEd with the real exit jmp and then bad things happen
				 * (in movgen.c from 186.crafty for example).
				 * So be sure the newly created Jmp cannot CSE.
				 */
				old_cse = get_opt_cse();
				set_opt_cse(0);
126
				jmp = new_r_Jmp(block);
127
				set_opt_cse(old_cse);
Matthias Braun's avatar
Matthias Braun committed
128
				edges_reroute(proj, jmp);
129
130
131
132
				break;

			case pn_Call_X_except:
				/* should not happen here */
Matthias Braun's avatar
Matthias Braun committed
133
				edges_reroute(proj, bad);
134
				break;
135
			case pn_Call_M:
136
				/* should not happen here */
Matthias Braun's avatar
Matthias Braun committed
137
				edges_reroute(proj, nomem);
138
139
				break;
			case pn_Call_T_result:
Matthias Braun's avatar
Matthias Braun committed
140
				reroute_result(proj, l_res, h_res);
141
142
143
144
145
146
147
148
149
150
151
152
153
154
				break;
			default:
				panic("Wrong Proj from Call");
			}
			kill_node(proj);
		}
		kill_node(call);
	} else {
		/* no edges, build Tuple */
		if (h_res == NULL)
			res = l_res;
		else {
			in[0] = l_res;
			in[1] = h_res;
155
			res = new_r_Tuple(block, 2, in);
156
157
158
159
160
161
162
163
164
165
166
167
		}

		turn_into_tuple(call, pn_Call_max);
		/*
		 * Beware:
		 * We do not check here if this call really has exception and regular Proj's.
		 * new_r_Jmp might than be CSEd with the real exit jmp and then bad things happen
		 * (in movgen.c from 186.crafty for example).
		 * So be sure the newly created Jmp cannot CSE.
		 */
		old_cse = get_opt_cse();
		set_opt_cse(0);
168
		jmp = new_r_Jmp(block);
169
170
		set_opt_cse(old_cse);

171
		set_Tuple_pred(call, pn_Call_M,                nomem);
172
173
174
175
		set_Tuple_pred(call, pn_Call_X_regular,        jmp);
		set_Tuple_pred(call, pn_Call_X_except,         bad);
		set_Tuple_pred(call, pn_Call_T_result,         res);
	}
176
177
178
179
180
}

/**
 * Map an Add (a_l, a_h, b_l, b_h)
 */
181
182
static int map_Add(ir_node *call, void *ctx)
{
183
184
185
186
187
188
189
190
191
192
193
194
195
	dbg_info *dbg        = get_irn_dbg_info(call);
	ir_node  *block      = get_nodes_block(call);
	ir_node  **params    = get_Call_param_arr(call);
	ir_type  *method     = get_Call_type(call);
	ir_node  *a_l        = params[BINOP_Left_Low];
	ir_node  *a_h        = params[BINOP_Left_High];
	ir_node  *b_l        = params[BINOP_Right_Low];
	ir_node  *b_h        = params[BINOP_Right_High];
	ir_mode  *l_mode     = get_type_mode(get_method_res_type(method, 0));
	ir_mode  *h_mode     = get_type_mode(get_method_res_type(method, 1));
	ir_mode  *mode_flags = ia32_reg_classes[CLASS_ia32_flags].mode;
	ir_node  *add_low, *add_high, *flags;
	ir_node  *l_res, *h_res;
Matthias Braun's avatar
Matthias Braun committed
196
	(void) ctx;
197
198
199

	/* l_res = a_l + b_l */
	/* h_res = a_h + b_h + carry */
200

201
	add_low  = new_bd_ia32_l_Add(dbg, block, a_l, b_l, mode_T);
202
	flags    = new_r_Proj(add_low, mode_flags, pn_ia32_flags);
203
	add_high = new_bd_ia32_l_Adc(dbg, block, a_h, b_h, flags, h_mode);
204

205
	l_res = new_r_Proj(add_low, l_mode, pn_ia32_res);
206
	h_res = add_high;
207

208
	resolve_call(call, l_res, h_res, current_ir_graph, block);
209
210
211
212
213
214
	return 1;
}

/**
 * Map a Sub (a_l, a_h, b_l, b_h)
 */
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
static int map_Sub(ir_node *call, void *ctx)
{
	dbg_info *dbg        = get_irn_dbg_info(call);
	ir_node  *block      = get_nodes_block(call);
	ir_node  **params    = get_Call_param_arr(call);
	ir_type  *method     = get_Call_type(call);
	ir_node  *a_l        = params[BINOP_Left_Low];
	ir_node  *a_h        = params[BINOP_Left_High];
	ir_node  *b_l        = params[BINOP_Right_Low];
	ir_node  *b_h        = params[BINOP_Right_High];
	ir_mode  *l_mode     = get_type_mode(get_method_res_type(method, 0));
	ir_mode  *h_mode     = get_type_mode(get_method_res_type(method, 1));
	ir_mode  *mode_flags = ia32_reg_classes[CLASS_ia32_flags].mode;
	ir_node  *sub_low, *sub_high, *flags;
	ir_node  *l_res, *h_res;
Matthias Braun's avatar
Matthias Braun committed
230
	(void) ctx;
231
232

	/* l_res = a_l - b_l */
233
	/* h_res = a_h - b_h - carry */
234

235
	sub_low  = new_bd_ia32_l_Sub(dbg, block, a_l, b_l, mode_T);
236
	flags    = new_r_Proj(sub_low, mode_flags, pn_ia32_flags);
237
	sub_high = new_bd_ia32_l_Sbb(dbg, block, a_h, b_h, flags, h_mode);
238

239
	l_res = new_r_Proj(sub_low, l_mode, pn_ia32_res);
240
	h_res = sub_high;
241

242
	resolve_call(call, l_res, h_res, current_ir_graph, block);
243
244
245
	return 1;
}

246
247
248
/**
 * Map a Shl (a_l, a_h, count)
 */
249
250
static int map_Shl(ir_node *call, void *ctx)
{
251
252
253
254
255
256
257
258
259
	ir_graph *irg     = current_ir_graph;
	dbg_info *dbg     = get_irn_dbg_info(call);
	ir_node  *block   = get_nodes_block(call);
	ir_node  **params = get_Call_param_arr(call);
	ir_type  *method  = get_Call_type(call);
	ir_node  *a_l     = params[BINOP_Left_Low];
	ir_node  *a_h     = params[BINOP_Left_High];
	ir_node  *cnt     = params[BINOP_Right_Low];
	ir_mode  *l_mode  = get_type_mode(get_method_res_type(method, 0));
260
	ir_mode  *h_mode  = get_type_mode(get_method_res_type(method, 1));
Michael Beck's avatar
Michael Beck committed
261
262
	ir_mode  *c_mode;
	ir_node  *l_res, *h_res, *irn, *cond, *upper, *n_block, *l1, *l2, *h1, *h2, *in[2];
Matthias Braun's avatar
Matthias Braun committed
263
	(void) ctx;
264

Michael Beck's avatar
Michael Beck committed
265
266
	if (is_Const(cnt)) {
		/* the shift count is a const, create better code */
Matthias Braun's avatar
Matthias Braun committed
267
		ir_tarval *tv = get_Const_tarval(cnt);
Michael Beck's avatar
Michael Beck committed
268

269
270
		if (tarval_cmp(tv, new_tarval_from_long(32, l_mode))
				& (ir_relation_greater_equal)) {
Michael Beck's avatar
Michael Beck committed
271
272
			/* simplest case: shift only the lower bits. Note that there is no
			   need to reduce the constant here, this is done by the hardware.  */
273
274
			ir_node *conv = new_rd_Conv(dbg, block, a_l, h_mode);
			h_res = new_rd_Shl(dbg, block, conv, cnt, h_mode);
275
			l_res = new_rd_Const(dbg, irg, get_mode_null(l_mode));
Michael Beck's avatar
Michael Beck committed
276

277
278
		} else {
			/* h_res = SHLD a_h, a_l, cnt */
279
			h_res = new_bd_ia32_l_ShlD(dbg, block, a_h, a_l, cnt, h_mode);
280
281

			/* l_res = SHL a_l, cnt */
282
			l_res = new_bd_ia32_l_ShlDep(dbg, block, a_l, cnt, h_res, l_mode);
Michael Beck's avatar
Michael Beck committed
283
		}
284
285
286

		resolve_call(call, l_res, h_res, irg, block);
		return 1;
Michael Beck's avatar
Michael Beck committed
287
288
289
290
291
	}

	part_block(call);
	upper = get_nodes_block(call);

292
	/* h_res = SHLD a_h, a_l, cnt */
293
	h1 = new_bd_ia32_l_ShlD(dbg, upper, a_h, a_l, cnt, h_mode);
294
295

	/* l_res = SHL a_l, cnt */
296
	l1 = new_bd_ia32_l_ShlDep(dbg, upper, a_l, cnt, h1, l_mode);
Michael Beck's avatar
Michael Beck committed
297
298

	c_mode = get_irn_mode(cnt);
299
	irn    = new_r_Const_long(irg, c_mode, 32);
300
	irn    = new_rd_And(dbg, upper, cnt, irn, c_mode);
301
	irn    = new_rd_Cmp(dbg, upper, irn, new_r_Const(irg, get_mode_null(c_mode)), ir_relation_equal);
302
	cond   = new_rd_Cond(dbg, upper, irn);
Michael Beck's avatar
Michael Beck committed
303

304
305
	in[0]  = new_r_Proj(cond, mode_X, pn_Cond_true);
	in[1]  = new_r_Proj(cond, mode_X, pn_Cond_false);
Michael Beck's avatar
Michael Beck committed
306
307
308

	/* the block for cnt >= 32 */
	n_block = new_rd_Block(dbg, irg, 1, &in[1]);
309
	h2      = new_rd_Conv(dbg, n_block, l1, h_mode);
310
	l2      = new_r_Const(irg, get_mode_null(l_mode));
311
	in[1]   = new_r_Jmp(n_block);
Michael Beck's avatar
Michael Beck committed
312
313
314
315
316

	set_irn_in(block, 2, in);

	in[0] = l1;
	in[1] = l2;
317
	l_res = new_r_Phi(block, 2, in, l_mode);
Michael Beck's avatar
Michael Beck committed
318
	set_Block_phis(block, l_res);
Michael Beck's avatar
Michael Beck committed
319
320
321

	in[0] = h1;
	in[1] = h2;
322
	h_res = new_r_Phi(block, 2, in, h_mode);
Michael Beck's avatar
Michael Beck committed
323
324
	set_Phi_next(l_res, h_res);
	set_Phi_next(h_res, NULL);
Michael Beck's avatar
Michael Beck committed
325
326
327

	/* move it down */
	set_nodes_block(call, block);
328
329
	for (irn = (ir_node*)get_irn_link(call); irn != NULL;
	     irn = (ir_node*)get_irn_link(irn)) {
Michael Beck's avatar
Michael Beck committed
330
		set_nodes_block(irn, block);
331
	}
332
333
334
335
336
337
338
339

	resolve_call(call, l_res, h_res, irg, block);
	return 1;
}

/**
 * Map a Shr (a_l, a_h, count)
 */
340
341
static int map_Shr(ir_node *call, void *ctx)
{
342
343
344
345
346
347
348
349
350
	ir_graph *irg     = current_ir_graph;
	dbg_info *dbg     = get_irn_dbg_info(call);
	ir_node  *block   = get_nodes_block(call);
	ir_node  **params = get_Call_param_arr(call);
	ir_type  *method  = get_Call_type(call);
	ir_node  *a_l     = params[BINOP_Left_Low];
	ir_node  *a_h     = params[BINOP_Left_High];
	ir_node  *cnt     = params[BINOP_Right_Low];
	ir_mode  *l_mode  = get_type_mode(get_method_res_type(method, 0));
351
	ir_mode  *h_mode  = get_type_mode(get_method_res_type(method, 1));
Michael Beck's avatar
Michael Beck committed
352
353
	ir_mode  *c_mode;
	ir_node  *l_res, *h_res, *irn, *cond, *upper, *n_block, *l1, *l2, *h1, *h2, *in[2];
Matthias Braun's avatar
Matthias Braun committed
354
	(void) ctx;
355

Michael Beck's avatar
Michael Beck committed
356
357
	if (is_Const(cnt)) {
		/* the shift count is a const, create better code */
Matthias Braun's avatar
Matthias Braun committed
358
		ir_tarval *tv = get_Const_tarval(cnt);
Michael Beck's avatar
Michael Beck committed
359

360
		if (tarval_cmp(tv, new_tarval_from_long(32, l_mode)) & (ir_relation_greater_equal)) {
Michael Beck's avatar
Michael Beck committed
361
362
			/* simplest case: shift only the higher bits. Note that there is no
			   need to reduce the constant here, this is done by the hardware.  */
363
			ir_node *conv = new_rd_Conv(dbg, block, a_h, l_mode);
364
			h_res = new_rd_Const(dbg, irg, get_mode_null(h_mode));
365
			l_res = new_rd_Shr(dbg, block, conv, cnt, l_mode);
366
367
		} else {
			/* l_res = SHRD a_h:a_l, cnt */
368
			l_res = new_bd_ia32_l_ShrD(dbg, block, a_l, a_h, cnt, l_mode);
Michael Beck's avatar
Michael Beck committed
369

370
			/* h_res = SHR a_h, cnt */
371
			h_res = new_bd_ia32_l_ShrDep(dbg, block, a_h, cnt, l_res, h_mode);
Michael Beck's avatar
Michael Beck committed
372
		}
373
374
		resolve_call(call, l_res, h_res, irg, block);
		return 1;
Michael Beck's avatar
Michael Beck committed
375
376
377
378
379
	}

	part_block(call);
	upper = get_nodes_block(call);

380
	/* l_res = SHRD a_h:a_l, cnt */
381
	l1 = new_bd_ia32_l_ShrD(dbg, upper, a_l, a_h, cnt, l_mode);
382

383
	/* h_res = SHR a_h, cnt */
384
	h1 = new_bd_ia32_l_ShrDep(dbg, upper, a_h, cnt, l1, h_mode);
Michael Beck's avatar
Michael Beck committed
385
386

	c_mode = get_irn_mode(cnt);
387
	irn    = new_r_Const_long(irg, c_mode, 32);
388
	irn    = new_rd_And(dbg, upper, cnt, irn, c_mode);
389
	irn    = new_rd_Cmp(dbg, upper, irn, new_r_Const(irg, get_mode_null(c_mode)), ir_relation_equal);
390
	cond   = new_rd_Cond(dbg, upper, irn);
Michael Beck's avatar
Michael Beck committed
391

392
393
	in[0]  = new_r_Proj(cond, mode_X, pn_Cond_true);
	in[1]  = new_r_Proj(cond, mode_X, pn_Cond_false);
Michael Beck's avatar
Michael Beck committed
394
395
396

	/* the block for cnt >= 32 */
	n_block = new_rd_Block(dbg, irg, 1, &in[1]);
397
	l2      = new_rd_Conv(dbg, n_block, h1, l_mode);
398
	h2      = new_r_Const(irg, get_mode_null(h_mode));
399
	in[1]   = new_r_Jmp(n_block);
Michael Beck's avatar
Michael Beck committed
400
401
402
403
404

	set_irn_in(block, 2, in);

	in[0] = l1;
	in[1] = l2;
405
	l_res = new_r_Phi(block, 2, in, l_mode);
Michael Beck's avatar
Michael Beck committed
406
	set_Block_phis(block, l_res);
Michael Beck's avatar
Michael Beck committed
407
408
409

	in[0] = h1;
	in[1] = h2;
410
	h_res = new_r_Phi(block, 2, in, h_mode);
Michael Beck's avatar
Michael Beck committed
411
412
	set_Phi_next(l_res, h_res);
	set_Phi_next(h_res, NULL);
Michael Beck's avatar
Michael Beck committed
413
414
415

	/* move it down */
	set_nodes_block(call, block);
416
417
	for (irn = (ir_node*)get_irn_link(call); irn != NULL;
	     irn = (ir_node*)get_irn_link(irn)) {
Michael Beck's avatar
Michael Beck committed
418
		set_nodes_block(irn, block);
419
	}
420
421
422
423
424
425
426
427

	resolve_call(call, l_res, h_res, irg, block);
	return 1;
}

/**
 * Map a Shrs (a_l, a_h, count)
 */
428
429
static int map_Shrs(ir_node *call, void *ctx)
{
Michael Beck's avatar
Michael Beck committed
430
431
432
433
434
435
436
437
438
	ir_graph *irg     = current_ir_graph;
	dbg_info *dbg     = get_irn_dbg_info(call);
	ir_node  *block   = get_nodes_block(call);
	ir_node  **params = get_Call_param_arr(call);
	ir_type  *method  = get_Call_type(call);
	ir_node  *a_l     = params[BINOP_Left_Low];
	ir_node  *a_h     = params[BINOP_Left_High];
	ir_node  *cnt     = params[BINOP_Right_Low];
	ir_mode  *l_mode  = get_type_mode(get_method_res_type(method, 0));
439
	ir_mode  *h_mode  = get_type_mode(get_method_res_type(method, 1));
Michael Beck's avatar
Michael Beck committed
440
441
	ir_mode  *c_mode;
	ir_node  *l_res, *h_res, *irn, *cond, *upper, *n_block, *l1, *l2, *h1, *h2, *in[2];
Matthias Braun's avatar
Matthias Braun committed
442
	(void) ctx;
443

Michael Beck's avatar
Michael Beck committed
444
445
	if (is_Const(cnt)) {
		/* the shift count is a const, create better code */
Matthias Braun's avatar
Matthias Braun committed
446
		ir_tarval *tv = get_Const_tarval(cnt);
Michael Beck's avatar
Michael Beck committed
447

448
		if (tarval_cmp(tv, new_tarval_from_long(32, l_mode)) & (ir_relation_greater_equal)) {
Michael Beck's avatar
Michael Beck committed
449
450
			/* simplest case: shift only the higher bits. Note that there is no
			   need to reduce the constant here, this is done by the hardware.  */
451
			ir_node *conv    = new_rd_Conv(dbg, block, a_h, l_mode);
452
			ir_mode *c_mode  = get_irn_mode(cnt);
Michael Beck's avatar
Michael Beck committed
453

454
455
			h_res = new_rd_Shrs(dbg, block, a_h, new_r_Const_long(irg, c_mode, 31), h_mode);
			l_res = new_rd_Shrs(dbg, block, conv, cnt, l_mode);
456
457
		} else {
			/* l_res = SHRD a_h:a_l, cnt */
458
			l_res = new_bd_ia32_l_ShrD(dbg, block, a_l, a_h, cnt, l_mode);
Michael Beck's avatar
Michael Beck committed
459

460
			/* h_res = SAR a_h, cnt */
461
			h_res = new_bd_ia32_l_SarDep(dbg, block, a_h, cnt, l_res, h_mode);
Michael Beck's avatar
Michael Beck committed
462
		}
463
464
		resolve_call(call, l_res, h_res, irg, block);
		return 1;
Michael Beck's avatar
Michael Beck committed
465
466
467
468
469
	}

	part_block(call);
	upper = get_nodes_block(call);

470
	/* l_res = SHRD a_h:a_l, cnt */
471
	l1 = new_bd_ia32_l_ShrD(dbg, upper, a_l, a_h, cnt, l_mode);
472
473

	/* h_res = SAR a_h, cnt */
474
	h1 = new_bd_ia32_l_SarDep(dbg, upper, a_h, cnt, l1, h_mode);
Michael Beck's avatar
Michael Beck committed
475
476

	c_mode = get_irn_mode(cnt);
477
	irn    = new_r_Const_long(irg, c_mode, 32);
478
	irn    = new_rd_And(dbg, upper, cnt, irn, c_mode);
479
	irn    = new_rd_Cmp(dbg, upper, irn, new_r_Const(irg, get_mode_null(c_mode)), ir_relation_equal);
480
	cond   = new_rd_Cond(dbg, upper, irn);
Michael Beck's avatar
Michael Beck committed
481

482
483
	in[0]  = new_r_Proj(cond, mode_X, pn_Cond_true);
	in[1]  = new_r_Proj(cond, mode_X, pn_Cond_false);
Michael Beck's avatar
Michael Beck committed
484
485
486

	/* the block for cnt >= 32 */
	n_block = new_rd_Block(dbg, irg, 1, &in[1]);
487
488
489
	l2      = new_rd_Conv(dbg, n_block, h1, l_mode);
	h2      = new_rd_Shrs(dbg, n_block, a_h, new_r_Const_long(irg, c_mode, 31), h_mode);
	in[1]   = new_r_Jmp(n_block);
Michael Beck's avatar
Michael Beck committed
490
491
492
493
494

	set_irn_in(block, 2, in);

	in[0] = l1;
	in[1] = l2;
495
	l_res = new_r_Phi(block, 2, in, l_mode);
Michael Beck's avatar
Michael Beck committed
496
	set_Block_phis(block, l_res);
Michael Beck's avatar
Michael Beck committed
497
498
499

	in[0] = h1;
	in[1] = h2;
500
	h_res = new_r_Phi(block, 2, in, h_mode);
Michael Beck's avatar
Michael Beck committed
501
502
	set_Phi_next(l_res, h_res);
	set_Phi_next(h_res, NULL);
Michael Beck's avatar
Michael Beck committed
503
504
505

	/* move it down */
	set_nodes_block(call, block);
506
507
	for (irn = (ir_node*)get_irn_link(call); irn != NULL;
	     irn = (ir_node*)get_irn_link(irn)) {
Michael Beck's avatar
Michael Beck committed
508
		set_nodes_block(irn, block);
509
	}
510
511
512
513
514

	resolve_call(call, l_res, h_res, irg, block);
	return 1;
}

515
516
517
/**
 * Checks where node high is a sign extension of low.
 */
518
519
520
static int is_sign_extend(ir_node *low, ir_node *high)
{
	if (is_Shrs(high)) {
Matthias Braun's avatar
Matthias Braun committed
521
522
523
		ir_node   *high_l;
		ir_node   *high_r;
		ir_tarval *shift_count;
524
525
526
527
528
529
530
531
532
533
534
535
536

		high_r = get_Shrs_right(high);
		if (!is_Const(high_r)) return 0;

		shift_count = get_Const_tarval(high_r);
		if (!tarval_is_long(shift_count))       return 0;
		if (get_tarval_long(shift_count) != 31) return 0;

		high_l = get_Shrs_left(high);

		if (is_Conv(low)    && get_Conv_op(low)    == high_l) return 1;
		if (is_Conv(high_l) && get_Conv_op(high_l) == low)    return 1;
	} else if (is_Const(low) && is_Const(high)) {
Matthias Braun's avatar
Matthias Braun committed
537
538
		ir_tarval *tl = get_Const_tarval(low);
		ir_tarval *th = get_Const_tarval(high);
539
540
541
542
543
544
545
546
547
548
549
550

		if (tarval_is_long(th) && tarval_is_long(tl)) {
			long l = get_tarval_long(tl);
			long h = get_tarval_long(th);

			return (h == 0  && l >= 0) || (h == -1 && l <  0);
		}
	}

	return 0;
}

551
552
553
/**
 * Map a Mul (a_l, a_h, b_l, b_h)
 */
554
555
static int map_Mul(ir_node *call, void *ctx)
{
Michael Beck's avatar
Michael Beck committed
556
557
558
559
560
561
562
563
564
	dbg_info *dbg     = get_irn_dbg_info(call);
	ir_node  *block   = get_nodes_block(call);
	ir_node  **params = get_Call_param_arr(call);
	ir_type  *method  = get_Call_type(call);
	ir_node  *a_l     = params[BINOP_Left_Low];
	ir_node  *a_h     = params[BINOP_Left_High];
	ir_node  *b_l     = params[BINOP_Right_Low];
	ir_node  *b_h     = params[BINOP_Right_High];
	ir_mode  *l_mode  = get_type_mode(get_method_res_type(method, 0));
565
	ir_mode  *h_mode  = get_type_mode(get_method_res_type(method, 1));
566
	ir_node  *l_res, *h_res, *mul, *pEDX, *add;
Matthias Braun's avatar
Matthias Braun committed
567
	(void) ctx;
568
569
570
571
572
573
574
575
576
577

	/*
		EDX:EAX = a_l * b_l
		l_res   = EAX

		t1 = b_l * a_h
		t2 = t1 + EDX
		t3 = a_l * b_h
		h_res = t2 + t3
	*/
Michael Beck's avatar
Michael Beck committed
578

579
	/* handle the often used case of 32x32=64 mul */
580
	if (is_sign_extend(a_l, a_h) && is_sign_extend(b_l, b_h)) {
581
		mul   = new_bd_ia32_l_IMul(dbg, block, a_l, b_l);
582
583
		h_res = new_rd_Proj(dbg, mul, h_mode, pn_ia32_l_IMul_res_high);
		l_res = new_rd_Proj(dbg, mul, l_mode, pn_ia32_l_IMul_res_low);
584
585
586
	} else {
		/* note that zero extension is handled hare efficiently */
		mul   = new_bd_ia32_l_Mul(dbg, block, a_l, b_l);
587
588
		pEDX  = new_rd_Proj(dbg, mul, h_mode, pn_ia32_l_Mul_res_high);
		l_res = new_rd_Proj(dbg, mul, l_mode, pn_ia32_l_Mul_res_low);
589
590
591
592
593
594
595

		b_l   = new_rd_Conv(dbg, block, b_l, h_mode);
		mul   = new_rd_Mul( dbg, block, a_h, b_l, h_mode);
		add   = new_rd_Add( dbg, block, mul, pEDX, h_mode);
		a_l   = new_rd_Conv(dbg, block, a_l, h_mode);
		mul   = new_rd_Mul( dbg, block, a_l, b_h, h_mode);
		h_res = new_rd_Add( dbg, block, add, mul, h_mode);
596
	}
597
	resolve_call(call, l_res, h_res, current_ir_graph, block);
598
599
600
601

	return 1;
}

602
603
604
/**
 * Map a Minus (a_l, a_h)
 */
605
606
static int map_Minus(ir_node *call, void *ctx)
{
Michael Beck's avatar
Michael Beck committed
607
608
609
610
611
612
613
	dbg_info *dbg     = get_irn_dbg_info(call);
	ir_node  *block   = get_nodes_block(call);
	ir_node  **params = get_Call_param_arr(call);
	ir_type  *method  = get_Call_type(call);
	ir_node  *a_l     = params[BINOP_Left_Low];
	ir_node  *a_h     = params[BINOP_Left_High];
	ir_mode  *l_mode  = get_type_mode(get_method_res_type(method, 0));
614
	ir_mode  *h_mode  = get_type_mode(get_method_res_type(method, 1));
615
	ir_node  *l_res, *h_res, *res;
Matthias Braun's avatar
Matthias Braun committed
616
	(void) ctx;
617

618
	res   = new_bd_ia32_Minus64Bit(dbg, block, a_l, a_h);
619
620
	l_res = new_r_Proj(res, l_mode, pn_ia32_Minus64Bit_low_res);
	h_res = new_r_Proj(res, h_mode, pn_ia32_Minus64Bit_high_res);
621

622
	resolve_call(call, l_res, h_res, current_ir_graph, block);
623
624
625
626

	return 1;
}

627
#if 0
628
629
630
/**
 * Map a Abs (a_l, a_h)
 */
631
632
static int map_Abs(ir_node *call, void *ctx)
{
633
634
635
636
637
638
639
640
641
642
	dbg_info *dbg        = get_irn_dbg_info(call);
	ir_node  *block      = get_nodes_block(call);
	ir_node  **params    = get_Call_param_arr(call);
	ir_type  *method     = get_Call_type(call);
	ir_node  *a_l        = params[BINOP_Left_Low];
	ir_node  *a_h        = params[BINOP_Left_High];
	ir_mode  *l_mode     = get_type_mode(get_method_res_type(method, 0));
	ir_mode  *h_mode     = get_type_mode(get_method_res_type(method, 1));
	ir_mode  *mode_flags = ia32_reg_classes[CLASS_ia32_flags].mode;
	ir_node  *l_res, *h_res, *sign, *sub_l, *sub_h;
643
	ir_node  *sign_l;
644
645
	ir_node  *l_sub;
	ir_node  *flags;
Matthias Braun's avatar
Matthias Braun committed
646
	(void) ctx;
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661

	/*
		Code inspired by gcc output :) (although gcc doubles the
		operation for t1 as t2 and uses t1 for operations with low part
		and t2 for operations with high part which is actually unnecessary
		because t1 and t2 represent the same value)

		t1    = SHRS a_h, 31
		t2    = a_l ^ t1
		t3    = a_h ^ t1
		l_res = t2 - t1
		h_res = t3 - t1 - carry

	*/

Matthias Braun's avatar
Matthias Braun committed
662
	/* TODO: give a hint to the backend somehow to not create a cltd here... */
663
	sign   = new_rd_Shrs(dbg, block, a_h, new_r_Const_long(irg, l_mode, 31), h_mode);
664
665
666
	sign_l = new_rd_Conv(dbg, block, sign, l_mode);
	sub_l  = new_rd_Eor(dbg, block, a_l, sign_l, l_mode);
	sub_h  = new_rd_Eor(dbg, block, a_h, sign,   h_mode);
667

668
	l_sub  = new_bd_ia32_l_Sub(dbg, block, sub_l, sign_l, mode_T);
669
670
	l_res  = new_r_Proj(l_sub, l_mode,     pn_ia32_res);
	flags  = new_r_Proj(l_sub, mode_flags, pn_ia32_flags);
671
	h_res  = new_bd_ia32_l_Sbb(dbg, block, sub_h, sign, flags, h_mode);
672

673
	resolve_call(call, l_res, h_res, current_ir_graph, block);
674
675
676

	return 1;
}
677
#endif
678

679
#define ID(x) new_id_from_chars(x, sizeof(x)-1)
Christian Würdig's avatar
Christian Würdig committed
680

Matthias Braun's avatar
Matthias Braun committed
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
static ir_entity *create_compiler_lib_entity(const char *name, ir_type *type)
{
	ir_type   *glob   = get_glob_type();
	ident     *id     = new_id_from_str(name);
	ir_entity *entity;

	/* Hack: we need to know the type of runtime library we use. Strictly
	   speaking it's not the same as the object-file-format. But in practice
	   the following should be enough */
	if (be_gas_object_file_format == OBJECT_FILE_FORMAT_MACH_O
			|| be_gas_object_file_format == OBJECT_FILE_FORMAT_COFF) {
		id = id_mangle3("___", id, "");
	} else {
		id = id_mangle3("__", id, "");
	}
	entity = new_entity(glob, id, type);
	set_entity_visibility(entity, ir_visibility_local);
	set_entity_ld_ident(entity, id);
	return entity;
}

702
/**
703
 * Maps a Div. Change into a library call.
704
 */
Matthias Braun's avatar
Matthias Braun committed
705
706
static int map_Div(ir_node *call, void *ctx)
{
707
	ia32_intrinsic_env_t *env = (ia32_intrinsic_env_t*)ctx;
Michael Beck's avatar
Michael Beck committed
708
	ir_type   *method    = get_Call_type(call);
709
	ir_mode   *h_mode    = get_type_mode(get_method_res_type(method, 1));
710
711
	ir_node   *ptr;
	ir_entity *ent;
Matthias Braun's avatar
Matthias Braun committed
712
	ir_graph  *irg = get_irn_irg(call);
713
	symconst_symbol sym;
714

715
	if (mode_is_signed(h_mode)) {
716
717
718
		/* 64bit signed Division */
		ent = env->divdi3;
		if (ent == NULL) {
Matthias Braun's avatar
Matthias Braun committed
719
			ent = env->divdi3 = create_compiler_lib_entity("divdi3", method);
720
721
		}
	} else {
722
		/* 64bit unsigned Division */
723
724
725
		ent = env->udivdi3;
		if (ent == NULL) {
			/* create library entity */
Matthias Braun's avatar
Matthias Braun committed
726
			ent = env->udivdi3 = create_compiler_lib_entity("udivdi3", method);
727
		}
728
	}
Matthias Braun's avatar
Matthias Braun committed
729

730
	ptr = get_Call_ptr(call);
Matthias Braun's avatar
Matthias Braun committed
731
732
733
734
	sym.entity_p = ent;
	ptr = new_r_SymConst(irg, get_irn_mode(ptr), sym, symconst_addr_ent);
	set_Call_ptr(call, ptr);

735
736
737
	return 1;
}

738
739
740
/**
 * Maps a Mod. Change into a library call
 */
741
742
static int map_Mod(ir_node *call, void *ctx)
{
743
	ia32_intrinsic_env_t *env = (ia32_intrinsic_env_t*)ctx;
744
	ir_type   *method    = get_Call_type(call);
745
	ir_mode   *h_mode    = get_type_mode(get_method_res_type(method, 1));
746
747
	ir_node   *ptr;
	ir_entity *ent;
Matthias Braun's avatar
Matthias Braun committed
748
	ir_graph  *irg = get_irn_irg(call);
749
750
	symconst_symbol sym;

751
	if (mode_is_signed(h_mode)) {
752
753
754
755
		/* 64bit signed Modulo */
		ent = env->moddi3;
		if (ent == NULL) {
			/* create library entity */
Matthias Braun's avatar
Matthias Braun committed
756
			ent = env->moddi3 = create_compiler_lib_entity("moddi3", method);
757
758
759
760
761
762
		}
	} else {
		/* 64bit signed Modulo */
		ent = env->umoddi3;
		if (ent == NULL) {
			/* create library entity */
Matthias Braun's avatar
Matthias Braun committed
763
			ent = env->umoddi3 = create_compiler_lib_entity("umoddi3", method);
764
765
		}
	}
Matthias Braun's avatar
Matthias Braun committed
766

767
	ptr = get_Call_ptr(call);
Matthias Braun's avatar
Matthias Braun committed
768
769
770
771
	sym.entity_p = ent;
	ptr = new_r_SymConst(irg, get_irn_mode(ptr), sym, symconst_addr_ent);
	set_Call_ptr(call, ptr);

772
	return 1;
773
774
775
}

/**
776
 * Maps a Conv.
777
 */
778
779
static int map_Conv(ir_node *call, void *ctx)
{
Matthias Braun's avatar
Matthias Braun committed
780
781
782
783
784
785
786
787
	ir_graph  *irg     = current_ir_graph;
	dbg_info  *dbg     = get_irn_dbg_info(call);
	ir_node   *block   = get_nodes_block(call);
	ir_node   **params = get_Call_param_arr(call);
	ir_type   *method  = get_Call_type(call);
	int       n        = get_Call_n_params(call);
	ir_node   *l_res, *h_res;
	(void) ctx;
788
789

	if (n == 1) {
790
791
		ir_node *float_to_ll;

792
793
794
795
796
797
798
		/* We have a Conv float -> long long here */
		ir_node *a_f        = params[0];
		ir_mode *l_res_mode = get_type_mode(get_method_res_type(method, 0));
		ir_mode *h_res_mode = get_type_mode(get_method_res_type(method, 1));

		assert(mode_is_float(get_irn_mode(a_f)) && "unexpected Conv call");

799
800
801
802
		if (mode_is_signed(h_res_mode)) {
			/* convert from float to signed 64bit */
			float_to_ll = new_bd_ia32_l_FloattoLL(dbg, block, a_f);

803
804
805
			l_res = new_r_Proj(float_to_ll, l_res_mode,
			                   pn_ia32_l_FloattoLL_res_low);
			h_res = new_r_Proj(float_to_ll, h_res_mode,
806
807
808
							   pn_ia32_l_FloattoLL_res_high);
		} else {
			/* convert from float to signed 64bit */
Matthias Braun's avatar
Matthias Braun committed
809
810
811
812
813
814
815
			ir_mode   *flt_mode = get_irn_mode(a_f);
			ir_tarval *flt_tv   = new_tarval_from_str("9223372036854775808", 19, flt_mode);
			ir_node   *flt_corr = new_r_Const(irg, flt_tv);
			ir_node   *lower_blk = block;
			ir_node   *upper_blk;
			ir_node   *cmp, *proj, *cond, *blk, *int_phi, *flt_phi;
			ir_node   *in[2];
816
817
818
819

			part_block(call);
			upper_blk = get_nodes_block(call);

820
821
			cmp   = new_rd_Cmp(dbg, upper_blk, a_f, flt_corr, ir_relation_less);
			cond  = new_rd_Cond(dbg, upper_blk, cmp);
822
823
			in[0] = new_r_Proj(cond, mode_X, pn_Cond_true);
			in[1] = new_r_Proj(cond, mode_X, pn_Cond_false);
824
			blk   = new_r_Block(irg, 1, &in[1]);
825
			in[1] = new_r_Jmp(blk);
826
827
828
829

			set_irn_in(lower_blk, 2, in);

			/* create to Phis */
830
831
			in[0] = new_r_Const(irg, get_mode_null(h_res_mode));
			in[1] = new_r_Const_long(irg, h_res_mode, 0x80000000);
832

833
			int_phi = new_r_Phi(lower_blk, 2, in, h_res_mode);
834
835

			in[0] = a_f;
836
			in[1] = new_rd_Sub(dbg, upper_blk, a_f, flt_corr, flt_mode);
837

838
			flt_phi = new_r_Phi(lower_blk, 2, in, flt_mode);
839

840
			/* fix Phi links for next part_block() */
841
842
843
			set_Block_phis(lower_blk, int_phi);
			set_Phi_next(int_phi, flt_phi);
			set_Phi_next(flt_phi, NULL);
844
845
846

			float_to_ll = new_bd_ia32_l_FloattoLL(dbg, lower_blk, flt_phi);

847
			l_res = new_r_Proj(float_to_ll, l_res_mode,
848
							   pn_ia32_l_FloattoLL_res_low);
849
			h_res = new_r_Proj(float_to_ll, h_res_mode,
850
851
							   pn_ia32_l_FloattoLL_res_high);

852
			h_res = new_rd_Add(dbg, lower_blk, h_res, int_phi, h_res_mode);
853
854
855
856

			/* move the call and its Proj's to the lower block */
			set_nodes_block(call, lower_blk);

857
858
			for (proj = (ir_node*)get_irn_link(call); proj != NULL;
			     proj = (ir_node*)get_irn_link(proj)) {
859
				set_nodes_block(proj, lower_blk);
860
			}
861
862
			block = lower_blk;
		}
863
864
		/* lower the call */
		resolve_call(call, l_res, h_res, irg, block);
865
866
867
	} else if (n == 2) {
		ir_node *ll_to_float;

868
869
870
871
872
		/* We have a Conv long long -> float here */
		ir_node *a_l       = params[BINOP_Left_Low];
		ir_node *a_h       = params[BINOP_Left_High];
		ir_mode *fres_mode = get_type_mode(get_method_res_type(method, 0));

Matthias Braun's avatar
Matthias Braun committed
873
874
		assert(! mode_is_float(get_irn_mode(a_l))
				&& ! mode_is_float(get_irn_mode(a_h)));
875

876
		ll_to_float = new_bd_ia32_l_LLtoFloat(dbg, block, a_h, a_l, fres_mode);
877
878

		/* lower the call */
879
880
881
		resolve_call(call, ll_to_float, NULL, irg, block);
	} else {
		panic("unexpected Conv call %+F", call);
882
883
884
885
886
	}

	return 1;
}

887
/* Ia32 implementation of intrinsic mapping. */
888
889
890
ir_entity *ia32_create_intrinsic_fkt(ir_type *method, const ir_op *op,
                                     const ir_mode *imode, const ir_mode *omode,
                                     void *context)
891
892
{
	i_record      elt;
893
	ir_entity     **ent = NULL;
894
895
896
897
898
899
900
901
902
903
904
905
906
907
	i_mapper_func mapper;

	if (! intrinsics)
		intrinsics = NEW_ARR_F(i_record, 0);

	switch (get_op_code(op)) {
	case iro_Add:
		ent    = &i_ents[iro_Add];
		mapper = map_Add;
		break;
	case iro_Sub:
		ent    = &i_ents[iro_Sub];
		mapper = map_Sub;
		break;
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
	case iro_Shl:
		ent    = &i_ents[iro_Shl];
		mapper = map_Shl;
		break;
	case iro_Shr:
		ent    = &i_ents[iro_Shr];
		mapper = map_Shr;
		break;
	case iro_Shrs:
		ent    = &i_ents[iro_Shrs];
		mapper = map_Shrs;
		break;
	case iro_Mul:
		ent    = &i_ents[iro_Mul];
		mapper = map_Mul;
		break;
924
925
926
927
	case iro_Minus:
		ent    = &i_ents[iro_Minus];
		mapper = map_Minus;
		break;
928
929
930
931
932
933
934
935
936
937
938
939
	case iro_Div:
		ent    = &i_ents[iro_Div];
		mapper = map_Div;
		break;
	case iro_Mod:
		ent    = &i_ents[iro_Mod];
		mapper = map_Mod;
		break;
	case iro_Conv:
		ent    = &i_ents[iro_Conv];
		mapper = map_Conv;
		break;
940
	default:
Christian Würdig's avatar
Christian Würdig committed
941
		fprintf(stderr, "FIXME: unhandled op for ia32 intrinsic function %s\n", get_id_str(op->name));
942
943
944
945
946
947
		return def_create_intrinsic_fkt(method, op, imode, omode, context);
	}

	if (ent && ! *ent) {
#define IDENT(s)  new_id_from_chars(s, sizeof(s)-1)

948
		ident *id = id_mangle(IDENT("L"), get_op_ident(op));
949
		*ent = new_entity(get_glob_type(), id, method);
950
		set_entity_visibility(*ent, ir_visibility_private);
951
952
953
954
955
	}

	elt.i_call.kind     = INTRINSIC_CALL;
	elt.i_call.i_ent    = *ent;
	elt.i_call.i_mapper = mapper;
956
	elt.i_call.ctx      = context;
957
958
959
	elt.i_call.link     = NULL;

	ARR_APP1(i_record, intrinsics, elt);
Sebastian Hack's avatar
Sebastian Hack committed
960
	return *ent;
961
}