1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
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
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
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
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
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
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
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
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
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
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
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
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
1162
1163
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
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
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
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
|
/* Graphite polyhedral representation.
Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
Contributed by Sebastian Pop <sebastian.pop@amd.com> and
Tobias Grosser <grosser@fim.uni-passau.de>.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_GRAPHITE_POLY_H
#define GCC_GRAPHITE_POLY_H
typedef struct poly_dr *poly_dr_p;
DEF_VEC_P(poly_dr_p);
DEF_VEC_ALLOC_P (poly_dr_p, heap);
typedef struct poly_bb *poly_bb_p;
DEF_VEC_P(poly_bb_p);
DEF_VEC_ALLOC_P (poly_bb_p, heap);
typedef struct scop *scop_p;
DEF_VEC_P(scop_p);
DEF_VEC_ALLOC_P (scop_p, heap);
typedef unsigned graphite_dim_t;
static inline graphite_dim_t pbb_dim_iter_domain (const struct poly_bb *);
static inline graphite_dim_t pbb_nb_params (const struct poly_bb *);
static inline graphite_dim_t scop_nb_params (scop_p);
/* A data reference can write or read some memory or we
just know it may write some memory. */
enum poly_dr_type
{
PDR_READ,
/* PDR_MAY_READs are represented using PDR_READS. This does not
limit the expressiveness. */
PDR_WRITE,
PDR_MAY_WRITE
};
struct poly_dr
{
/* An identifier for this PDR. */
int id;
/* The number of data refs identical to this one in the PBB. */
int nb_refs;
/* A pointer to compiler's data reference description. */
void *compiler_dr;
/* A pointer to the PBB that contains this data reference. */
poly_bb_p pbb;
enum poly_dr_type type;
/* The access polyhedron contains the polyhedral space this data
reference will access.
The polyhedron contains these dimensions:
- The alias set (a):
Every memory access is classified in at least one alias set.
- The subscripts (s_0, ..., s_n):
The memory is accessed using zero or more subscript dimensions.
- The iteration domain (variables and parameters)
Do not hardcode the dimensions. Use the following accessor functions:
- pdr_alias_set_dim
- pdr_subscript_dim
- pdr_iterator_dim
- pdr_parameter_dim
Example:
| int A[1335][123];
| int *p = malloc ();
|
| k = ...
| for i
| {
| if (unknown_function ())
| p = A;
| ... = p[?][?];
| for j
| A[i][j+k] = m;
| }
The data access A[i][j+k] in alias set "5" is described like this:
| i j k a s0 s1 1
| 0 0 0 1 0 0 -5 = 0
|-1 0 0 0 1 0 0 = 0
| 0 -1 -1 0 0 1 0 = 0
| 0 0 0 0 1 0 0 >= 0 # The last four lines describe the
| 0 0 0 0 0 1 0 >= 0 # array size.
| 0 0 0 0 -1 0 1335 >= 0
| 0 0 0 0 0 -1 123 >= 0
The pointer "*p" in alias set "5" and "7" is described as a union of
polyhedron:
| i k a s0 1
| 0 0 1 0 -5 = 0
| 0 0 0 1 0 >= 0
"or"
| i k a s0 1
| 0 0 1 0 -7 = 0
| 0 0 0 1 0 >= 0
"*p" accesses all of the object allocated with 'malloc'.
The scalar data access "m" is represented as an array with zero subscript
dimensions.
| i j k a 1
| 0 0 0 -1 15 = 0
The difference between the graphite internal format for access data and
the OpenSop format is in the order of columns.
Instead of having:
| i j k a s0 s1 1
| 0 0 0 1 0 0 -5 = 0
|-1 0 0 0 1 0 0 = 0
| 0 -1 -1 0 0 1 0 = 0
| 0 0 0 0 1 0 0 >= 0 # The last four lines describe the
| 0 0 0 0 0 1 0 >= 0 # array size.
| 0 0 0 0 -1 0 1335 >= 0
| 0 0 0 0 0 -1 123 >= 0
In OpenScop we have:
| a s0 s1 i j k 1
| 1 0 0 0 0 0 -5 = 0
| 0 1 0 -1 0 0 0 = 0
| 0 0 1 0 -1 -1 0 = 0
| 0 1 0 0 0 0 0 >= 0 # The last four lines describe the
| 0 0 1 0 0 0 0 >= 0 # array size.
| 0 -1 0 0 0 0 1335 >= 0
| 0 0 -1 0 0 0 123 >= 0
The OpenScop access function is printed as follows:
| 1 # The number of disjunct components in a union of access functions.
| R C O I L P # Described bellow.
| a s0 s1 i j k 1
| 1 0 0 0 0 0 -5 = 0
| 0 1 0 -1 0 0 0 = 0
| 0 0 1 0 -1 -1 0 = 0
| 0 1 0 0 0 0 0 >= 0 # The last four lines describe the
| 0 0 1 0 0 0 0 >= 0 # array size.
| 0 -1 0 0 0 0 1335 >= 0
| 0 0 -1 0 0 0 123 >= 0
Where:
- R: Number of rows.
- C: Number of columns.
- O: Number of output dimensions = alias set + number of subscripts.
- I: Number of input dimensions (iterators).
- L: Number of local (existentially quantified) dimensions.
- P: Number of parameters.
In the example, the vector "R C O I L P" is "7 7 3 2 0 1". */
isl_map *accesses;
isl_set *extent;
/* Data reference's base object set number, we must assure 2 pdrs are in the
same base object set before dependency checking. */
int dr_base_object_set;
/* The number of subscripts. */
graphite_dim_t nb_subscripts;
};
#define PDR_ID(PDR) (PDR->id)
#define PDR_NB_REFS(PDR) (PDR->nb_refs)
#define PDR_CDR(PDR) (PDR->compiler_dr)
#define PDR_PBB(PDR) (PDR->pbb)
#define PDR_TYPE(PDR) (PDR->type)
#define PDR_ACCESSES(PDR) (NULL)
#define PDR_BASE_OBJECT_SET(PDR) (PDR->dr_base_object_set)
#define PDR_NB_SUBSCRIPTS(PDR) (PDR->nb_subscripts)
void new_poly_dr (poly_bb_p, int, enum poly_dr_type, void *,
graphite_dim_t, isl_map *, isl_set *);
void free_poly_dr (poly_dr_p);
void debug_pdr (poly_dr_p, int);
void print_pdr (FILE *, poly_dr_p, int);
static inline scop_p pdr_scop (poly_dr_p pdr);
/* The dimension of the iteration domain of the scop of PDR. */
static inline graphite_dim_t
pdr_dim_iter_domain (poly_dr_p pdr)
{
return pbb_dim_iter_domain (PDR_PBB (pdr));
}
/* The number of parameters of the scop of PDR. */
static inline graphite_dim_t
pdr_nb_params (poly_dr_p pdr)
{
return scop_nb_params (pdr_scop (pdr));
}
/* The dimension of the alias set in PDR. */
static inline graphite_dim_t
pdr_alias_set_dim (poly_dr_p pdr)
{
poly_bb_p pbb = PDR_PBB (pdr);
return pbb_dim_iter_domain (pbb) + pbb_nb_params (pbb);
}
/* The dimension in PDR containing subscript S. */
static inline graphite_dim_t
pdr_subscript_dim (poly_dr_p pdr, graphite_dim_t s)
{
poly_bb_p pbb = PDR_PBB (pdr);
return pbb_dim_iter_domain (pbb) + pbb_nb_params (pbb) + 1 + s;
}
/* The dimension in PDR containing the loop iterator ITER. */
static inline graphite_dim_t
pdr_iterator_dim (poly_dr_p pdr ATTRIBUTE_UNUSED, graphite_dim_t iter)
{
return iter;
}
/* The dimension in PDR containing parameter PARAM. */
static inline graphite_dim_t
pdr_parameter_dim (poly_dr_p pdr, graphite_dim_t param)
{
poly_bb_p pbb = PDR_PBB (pdr);
return pbb_dim_iter_domain (pbb) + param;
}
/* Returns true when PDR is a "read". */
static inline bool
pdr_read_p (poly_dr_p pdr)
{
return PDR_TYPE (pdr) == PDR_READ;
}
/* Returns true when PDR is a "write". */
static inline bool
pdr_write_p (poly_dr_p pdr)
{
return PDR_TYPE (pdr) == PDR_WRITE;
}
/* Returns true when PDR is a "may write". */
static inline bool
pdr_may_write_p (poly_dr_p pdr)
{
return PDR_TYPE (pdr) == PDR_MAY_WRITE;
}
/* Return true when PDR1 and PDR2 are similar data accesses: they have
the same base array, and the same access functions. */
static inline bool
same_pdr_p (poly_dr_p pdr1, poly_dr_p pdr2)
{
return PDR_NB_SUBSCRIPTS (pdr1) == PDR_NB_SUBSCRIPTS (pdr2)
&& PDR_BASE_OBJECT_SET (pdr1) == PDR_BASE_OBJECT_SET (pdr2);
}
typedef struct poly_scattering *poly_scattering_p;
struct poly_scattering
{
/* The number of local variables. */
int nb_local_variables;
/* The number of scattering dimensions. */
int nb_scattering;
};
/* POLY_BB represents a blackbox in the polyhedral model. */
struct poly_bb
{
/* Pointer to a basic block or a statement in the compiler. */
void *black_box;
/* Pointer to the SCOP containing this PBB. */
scop_p scop;
/* The iteration domain of this bb. The layout of this polyhedron
is I|G with I the iteration domain, G the context parameters.
Example:
for (i = a - 7*b + 8; i <= 3*a + 13*b + 20; i++)
for (j = 2; j <= 2*i + 5; j++)
for (k = 0; k <= 5; k++)
S (i,j,k)
Loop iterators: i, j, k
Parameters: a, b
| i >= a - 7b + 8
| i <= 3a + 13b + 20
| j >= 2
| j <= 2i + 5
| k >= 0
| k <= 5
The number of variables in the DOMAIN may change and is not
related to the number of loops in the original code. */
isl_set *domain;
/* The data references we access. */
VEC (poly_dr_p, heap) *drs;
/* The original scattering. */
poly_scattering_p _original;
isl_map *schedule;
/* The transformed scattering. */
poly_scattering_p _transformed;
isl_map *transformed;
/* A copy of the transformed scattering. */
poly_scattering_p _saved;
isl_map *saved;
/* True when this PBB contains only a reduction statement. */
bool is_reduction;
};
#define PBB_BLACK_BOX(PBB) ((gimple_bb_p) PBB->black_box)
#define PBB_SCOP(PBB) (PBB->scop)
#define PBB_DOMAIN(PBB) (NULL)
#define PBB_DRS(PBB) (PBB->drs)
#define PBB_ORIGINAL(PBB) (PBB->_original)
#define PBB_ORIGINAL_SCATTERING(PBB) (NULL)
#define PBB_TRANSFORMED(PBB) (PBB->_transformed)
#define PBB_TRANSFORMED_SCATTERING(PBB) (NULL)
#define PBB_SAVED(PBB) (PBB->_saved)
/* XXX isl if we ever need local vars in the scatter, we can't use the
out dimension of transformed to count the scatterting transform dimension.
*/
#define PBB_NB_LOCAL_VARIABLES(PBB) (0)
#define PBB_NB_SCATTERING_TRANSFORM(PBB) (isl_map_n_out (PBB->transformed))
#define PBB_IS_REDUCTION(PBB) (PBB->is_reduction)
extern poly_bb_p new_poly_bb (scop_p, void *);
extern void free_poly_bb (poly_bb_p);
extern void debug_loop_vec (poly_bb_p);
extern void schedule_to_scattering (poly_bb_p, int);
extern void print_pbb_domain (FILE *, poly_bb_p, int);
extern void print_pbb (FILE *, poly_bb_p, int);
extern void print_scop_context (FILE *, scop_p, int);
extern void print_scop (FILE *, scop_p, int);
extern void print_cloog (FILE *, scop_p, int);
extern void debug_pbb_domain (poly_bb_p, int);
extern void debug_pbb (poly_bb_p, int);
extern void print_pdrs (FILE *, poly_bb_p, int);
extern void debug_pdrs (poly_bb_p, int);
extern void debug_scop_context (scop_p, int);
extern void debug_scop (scop_p, int);
extern void debug_cloog (scop_p, int);
extern void print_scop_params (FILE *, scop_p, int);
extern void debug_scop_params (scop_p, int);
extern void print_iteration_domain (FILE *, poly_bb_p, int);
extern void print_iteration_domains (FILE *, scop_p, int);
extern void debug_iteration_domain (poly_bb_p, int);
extern void debug_iteration_domains (scop_p, int);
extern void print_isl_set (FILE *, isl_set *);
extern void print_isl_map (FILE *, isl_map *);
extern void print_isl_aff (FILE *, isl_aff *);
extern void print_isl_constraint (FILE *, isl_constraint *);
extern void debug_isl_set (isl_set *);
extern void debug_isl_map (isl_map *);
extern void debug_isl_aff (isl_aff *);
extern void debug_isl_constraint (isl_constraint *);
extern int scop_do_interchange (scop_p);
extern int scop_do_strip_mine (scop_p, int);
extern bool scop_do_block (scop_p);
extern bool flatten_all_loops (scop_p);
extern void pbb_number_of_iterations_at_time (poly_bb_p, graphite_dim_t, mpz_t);
extern void debug_gmp_value (mpz_t);
/* Return the number of write data references in PBB. */
static inline int
number_of_write_pdrs (poly_bb_p pbb)
{
int res = 0;
int i;
poly_dr_p pdr;
for (i = 0; VEC_iterate (poly_dr_p, PBB_DRS (pbb), i, pdr); i++)
if (PDR_TYPE (pdr) == PDR_WRITE)
res++;
return res;
}
/* Returns a gimple_bb from BB. */
static inline gimple_bb_p
gbb_from_bb (basic_block bb)
{
return (gimple_bb_p) bb->aux;
}
/* The poly_bb of the BB. */
static inline poly_bb_p
pbb_from_bb (basic_block bb)
{
return GBB_PBB (gbb_from_bb (bb));
}
/* The basic block of the PBB. */
static inline basic_block
pbb_bb (poly_bb_p pbb)
{
return GBB_BB (PBB_BLACK_BOX (pbb));
}
/* The index of the PBB. */
static inline int
pbb_index (poly_bb_p pbb)
{
return pbb_bb (pbb)->index;
}
/* The loop of the PBB. */
static inline loop_p
pbb_loop (poly_bb_p pbb)
{
return gbb_loop (PBB_BLACK_BOX (pbb));
}
/* The scop that contains the PDR. */
static inline scop_p
pdr_scop (poly_dr_p pdr)
{
return PBB_SCOP (PDR_PBB (pdr));
}
/* Set black box of PBB to BLACKBOX. */
static inline void
pbb_set_black_box (poly_bb_p pbb, void *black_box)
{
pbb->black_box = black_box;
}
/* The number of loops around PBB: the dimension of the iteration
domain. */
static inline graphite_dim_t
pbb_dim_iter_domain (const struct poly_bb *pbb)
{
return isl_set_dim (pbb->domain, isl_dim_set);
}
/* The number of params defined in PBB. */
static inline graphite_dim_t
pbb_nb_params (const struct poly_bb *pbb)
{
scop_p scop = PBB_SCOP (pbb);
return scop_nb_params (scop);
}
/* The number of scattering dimensions in the SCATTERING polyhedron
of a PBB for a given SCOP. */
static inline graphite_dim_t
pbb_nb_scattering_orig (const struct poly_bb *pbb)
{
return 2 * pbb_dim_iter_domain (pbb) + 1;
}
/* The number of scattering dimensions in PBB. */
static inline graphite_dim_t
pbb_nb_scattering_transform (const struct poly_bb *pbb)
{
return PBB_NB_SCATTERING_TRANSFORM (pbb);
}
/* The number of dynamic scattering dimensions in PBB. */
static inline graphite_dim_t
pbb_nb_dynamic_scattering_transform (const struct poly_bb *pbb)
{
/* This function requires the 2d + 1 scattering format to be
invariant during all transformations. */
gcc_assert (PBB_NB_SCATTERING_TRANSFORM (pbb) % 2);
return PBB_NB_SCATTERING_TRANSFORM (pbb) / 2;
}
/* Returns the number of local variables used in the transformed
scattering polyhedron of PBB. */
static inline graphite_dim_t
pbb_nb_local_vars (const struct poly_bb *pbb ATTRIBUTE_UNUSED)
{
/* For now we do not have any local variables, as we do not do strip
mining for example. */
return PBB_NB_LOCAL_VARIABLES (pbb);
}
/* The dimension in the domain of PBB containing the iterator ITER. */
static inline graphite_dim_t
pbb_iterator_dim (poly_bb_p pbb ATTRIBUTE_UNUSED, graphite_dim_t iter)
{
return iter;
}
/* The dimension in the domain of PBB containing the iterator ITER. */
static inline graphite_dim_t
pbb_parameter_dim (poly_bb_p pbb, graphite_dim_t param)
{
return param
+ pbb_dim_iter_domain (pbb);
}
/* The dimension in the original scattering polyhedron of PBB
containing the scattering iterator SCATTER. */
static inline graphite_dim_t
psco_scattering_dim (poly_bb_p pbb ATTRIBUTE_UNUSED, graphite_dim_t scatter)
{
gcc_assert (scatter < pbb_nb_scattering_orig (pbb));
return scatter;
}
/* The dimension in the transformed scattering polyhedron of PBB
containing the scattering iterator SCATTER. */
static inline graphite_dim_t
psct_scattering_dim (poly_bb_p pbb ATTRIBUTE_UNUSED, graphite_dim_t scatter)
{
gcc_assert (scatter <= pbb_nb_scattering_transform (pbb));
return scatter;
}
/* The dimension in the transformed scattering polyhedron of PBB of
the local variable LV. */
static inline graphite_dim_t
psct_local_var_dim (poly_bb_p pbb, graphite_dim_t lv)
{
gcc_assert (lv <= pbb_nb_local_vars (pbb));
return lv + pbb_nb_scattering_transform (pbb);
}
/* The dimension in the original scattering polyhedron of PBB
containing the loop iterator ITER. */
static inline graphite_dim_t
psco_iterator_dim (poly_bb_p pbb, graphite_dim_t iter)
{
gcc_assert (iter < pbb_dim_iter_domain (pbb));
return iter + pbb_nb_scattering_orig (pbb);
}
/* The dimension in the transformed scattering polyhedron of PBB
containing the loop iterator ITER. */
static inline graphite_dim_t
psct_iterator_dim (poly_bb_p pbb, graphite_dim_t iter)
{
gcc_assert (iter < pbb_dim_iter_domain (pbb));
return iter
+ pbb_nb_scattering_transform (pbb)
+ pbb_nb_local_vars (pbb);
}
/* The dimension in the original scattering polyhedron of PBB
containing parameter PARAM. */
static inline graphite_dim_t
psco_parameter_dim (poly_bb_p pbb, graphite_dim_t param)
{
gcc_assert (param < pbb_nb_params (pbb));
return param
+ pbb_nb_scattering_orig (pbb)
+ pbb_dim_iter_domain (pbb);
}
/* The dimension in the transformed scattering polyhedron of PBB
containing parameter PARAM. */
static inline graphite_dim_t
psct_parameter_dim (poly_bb_p pbb, graphite_dim_t param)
{
gcc_assert (param < pbb_nb_params (pbb));
return param
+ pbb_nb_scattering_transform (pbb)
+ pbb_nb_local_vars (pbb)
+ pbb_dim_iter_domain (pbb);
}
/* The scattering dimension of PBB corresponding to the dynamic level
LEVEL. */
static inline graphite_dim_t
psct_dynamic_dim (poly_bb_p pbb, graphite_dim_t level)
{
graphite_dim_t result = 1 + 2 * level;
gcc_assert (result < pbb_nb_scattering_transform (pbb));
return result;
}
/* The scattering dimension of PBB corresponding to the static
sequence of the loop level LEVEL. */
static inline graphite_dim_t
psct_static_dim (poly_bb_p pbb, graphite_dim_t level)
{
graphite_dim_t result = 2 * level;
gcc_assert (result < pbb_nb_scattering_transform (pbb));
return result;
}
/* Adds to the transformed scattering polyhedron of PBB a new local
variable and returns its index. */
static inline graphite_dim_t
psct_add_local_variable (poly_bb_p pbb ATTRIBUTE_UNUSED)
{
gcc_unreachable ();
return 0;
}
typedef struct lst *lst_p;
DEF_VEC_P(lst_p);
DEF_VEC_ALLOC_P (lst_p, heap);
/* Loops and Statements Tree. */
struct lst {
/* LOOP_P is true when an LST node is a loop. */
bool loop_p;
/* A pointer to the loop that contains this node. */
lst_p loop_father;
/* The sum of all the memory strides for an LST loop. */
mpz_t memory_strides;
/* Loop nodes contain a sequence SEQ of LST nodes, statements
contain a pointer to their polyhedral representation PBB. */
union {
poly_bb_p pbb;
VEC (lst_p, heap) *seq;
} node;
};
#define LST_LOOP_P(LST) ((LST)->loop_p)
#define LST_LOOP_FATHER(LST) ((LST)->loop_father)
#define LST_PBB(LST) ((LST)->node.pbb)
#define LST_SEQ(LST) ((LST)->node.seq)
#define LST_LOOP_MEMORY_STRIDES(LST) ((LST)->memory_strides)
void scop_to_lst (scop_p);
void print_lst (FILE *, lst_p, int);
void debug_lst (lst_p);
void dot_lst (lst_p);
/* Creates a new LST loop with SEQ. */
static inline lst_p
new_lst_loop (VEC (lst_p, heap) *seq)
{
lst_p lst = XNEW (struct lst);
int i;
lst_p l;
LST_LOOP_P (lst) = true;
LST_SEQ (lst) = seq;
LST_LOOP_FATHER (lst) = NULL;
mpz_init (LST_LOOP_MEMORY_STRIDES (lst));
mpz_set_si (LST_LOOP_MEMORY_STRIDES (lst), -1);
for (i = 0; VEC_iterate (lst_p, seq, i, l); i++)
LST_LOOP_FATHER (l) = lst;
return lst;
}
/* Creates a new LST statement with PBB. */
static inline lst_p
new_lst_stmt (poly_bb_p pbb)
{
lst_p lst = XNEW (struct lst);
LST_LOOP_P (lst) = false;
LST_PBB (lst) = pbb;
LST_LOOP_FATHER (lst) = NULL;
return lst;
}
/* Frees the memory used by LST. */
static inline void
free_lst (lst_p lst)
{
if (!lst)
return;
if (LST_LOOP_P (lst))
{
int i;
lst_p l;
for (i = 0; VEC_iterate (lst_p, LST_SEQ (lst), i, l); i++)
free_lst (l);
mpz_clear (LST_LOOP_MEMORY_STRIDES (lst));
VEC_free (lst_p, heap, LST_SEQ (lst));
}
free (lst);
}
/* Returns a copy of LST. */
static inline lst_p
copy_lst (lst_p lst)
{
if (!lst)
return NULL;
if (LST_LOOP_P (lst))
{
int i;
lst_p l;
VEC (lst_p, heap) *seq = VEC_alloc (lst_p, heap, 5);
for (i = 0; VEC_iterate (lst_p, LST_SEQ (lst), i, l); i++)
VEC_safe_push (lst_p, heap, seq, copy_lst (l));
return new_lst_loop (seq);
}
return new_lst_stmt (LST_PBB (lst));
}
/* Adds a new loop under the loop LST. */
static inline void
lst_add_loop_under_loop (lst_p lst)
{
VEC (lst_p, heap) *seq = VEC_alloc (lst_p, heap, 1);
lst_p l = new_lst_loop (LST_SEQ (lst));
gcc_assert (LST_LOOP_P (lst));
LST_LOOP_FATHER (l) = lst;
VEC_quick_push (lst_p, seq, l);
LST_SEQ (lst) = seq;
}
/* Returns the loop depth of LST. */
static inline int
lst_depth (lst_p lst)
{
if (!lst)
return -2;
/* The depth of the outermost "fake" loop is -1. This outermost
loop does not have a loop father and it is just a container, as
in the loop representation of GCC. */
if (!LST_LOOP_FATHER (lst))
return -1;
return lst_depth (LST_LOOP_FATHER (lst)) + 1;
}
/* Returns the Dewey number for LST. */
static inline int
lst_dewey_number (lst_p lst)
{
int i;
lst_p l;
if (!lst)
return -1;
if (!LST_LOOP_FATHER (lst))
return 0;
FOR_EACH_VEC_ELT (lst_p, LST_SEQ (LST_LOOP_FATHER (lst)), i, l)
if (l == lst)
return i;
return -1;
}
/* Returns the Dewey number of LST at depth DEPTH. */
static inline int
lst_dewey_number_at_depth (lst_p lst, int depth)
{
gcc_assert (lst && depth >= 0 && lst_depth (lst) <= depth);
if (lst_depth (lst) == depth)
return lst_dewey_number (lst);
return lst_dewey_number_at_depth (LST_LOOP_FATHER (lst), depth);
}
/* Returns the predecessor of LST in the sequence of its loop father.
Returns NULL if LST is the first statement in the sequence. */
static inline lst_p
lst_pred (lst_p lst)
{
int dewey;
lst_p father;
if (!lst || !LST_LOOP_FATHER (lst))
return NULL;
dewey = lst_dewey_number (lst);
if (dewey == 0)
return NULL;
father = LST_LOOP_FATHER (lst);
return VEC_index (lst_p, LST_SEQ (father), dewey - 1);
}
/* Returns the successor of LST in the sequence of its loop father.
Returns NULL if there is none. */
static inline lst_p
lst_succ (lst_p lst)
{
int dewey;
lst_p father;
if (!lst || !LST_LOOP_FATHER (lst))
return NULL;
dewey = lst_dewey_number (lst);
father = LST_LOOP_FATHER (lst);
if (VEC_length (lst_p, LST_SEQ (father)) == (unsigned) dewey + 1)
return NULL;
return VEC_index (lst_p, LST_SEQ (father), dewey + 1);
}
/* Return the LST node corresponding to PBB. */
static inline lst_p
lst_find_pbb (lst_p lst, poly_bb_p pbb)
{
int i;
lst_p l;
if (!lst)
return NULL;
if (!LST_LOOP_P (lst))
return (pbb == LST_PBB (lst)) ? lst : NULL;
for (i = 0; VEC_iterate (lst_p, LST_SEQ (lst), i, l); i++)
{
lst_p res = lst_find_pbb (l, pbb);
if (res)
return res;
}
return NULL;
}
/* Return the LST node corresponding to the loop around STMT at depth
LOOP_DEPTH. */
static inline lst_p
find_lst_loop (lst_p stmt, int loop_depth)
{
lst_p loop = LST_LOOP_FATHER (stmt);
gcc_assert (loop_depth >= 0);
while (loop_depth < lst_depth (loop))
loop = LST_LOOP_FATHER (loop);
return loop;
}
/* Return the first LST representing a PBB statement in LST. */
static inline lst_p
lst_find_first_pbb (lst_p lst)
{
int i;
lst_p l;
if (!lst)
return NULL;
if (!LST_LOOP_P (lst))
return lst;
for (i = 0; VEC_iterate (lst_p, LST_SEQ (lst), i, l); i++)
{
lst_p res = lst_find_first_pbb (l);
if (res)
return res;
}
return NULL;
}
/* Returns true when LST is a loop that does not contain
statements. */
static inline bool
lst_empty_p (lst_p lst)
{
return !lst_find_first_pbb (lst);
}
/* Return the last LST representing a PBB statement in LST. */
static inline lst_p
lst_find_last_pbb (lst_p lst)
{
int i;
lst_p l, res = NULL;
if (!lst)
return NULL;
if (!LST_LOOP_P (lst))
return lst;
for (i = 0; VEC_iterate (lst_p, LST_SEQ (lst), i, l); i++)
{
lst_p last = lst_find_last_pbb (l);
if (last)
res = last;
}
gcc_assert (res);
return res;
}
/* Returns true if LOOP contains LST, in other words, if LST is nested
in LOOP. */
static inline bool
lst_contains_p (lst_p loop, lst_p lst)
{
if (!loop || !lst || !LST_LOOP_P (loop))
return false;
if (loop == lst)
return true;
return lst_contains_p (loop, LST_LOOP_FATHER (lst));
}
/* Returns true if LOOP contains PBB, in other words, if PBB is nested
in LOOP. */
static inline bool
lst_contains_pbb (lst_p loop, poly_bb_p pbb)
{
return lst_find_pbb (loop, pbb) ? true : false;
}
/* Creates a loop nest of depth NB_LOOPS containing LST. */
static inline lst_p
lst_create_nest (int nb_loops, lst_p lst)
{
lst_p res, loop;
VEC (lst_p, heap) *seq;
if (nb_loops == 0)
return lst;
seq = VEC_alloc (lst_p, heap, 1);
loop = lst_create_nest (nb_loops - 1, lst);
VEC_quick_push (lst_p, seq, loop);
res = new_lst_loop (seq);
LST_LOOP_FATHER (loop) = res;
return res;
}
/* Removes LST from the sequence of statements of its loop father. */
static inline void
lst_remove_from_sequence (lst_p lst)
{
lst_p father = LST_LOOP_FATHER (lst);
int dewey = lst_dewey_number (lst);
gcc_assert (lst && father && dewey >= 0);
VEC_ordered_remove (lst_p, LST_SEQ (father), dewey);
LST_LOOP_FATHER (lst) = NULL;
}
/* Removes the loop LST and inline its body in the father loop. */
static inline void
lst_remove_loop_and_inline_stmts_in_loop_father (lst_p lst)
{
lst_p l, father = LST_LOOP_FATHER (lst);
int i, dewey = lst_dewey_number (lst);
gcc_assert (lst && father && dewey >= 0);
VEC_ordered_remove (lst_p, LST_SEQ (father), dewey);
LST_LOOP_FATHER (lst) = NULL;
FOR_EACH_VEC_ELT (lst_p, LST_SEQ (lst), i, l)
{
VEC_safe_insert (lst_p, heap, LST_SEQ (father), dewey + i, l);
LST_LOOP_FATHER (l) = father;
}
}
/* Sets NITER to the upper bound approximation of the number of
iterations of loop LST. */
static inline void
lst_niter_for_loop (lst_p lst, mpz_t niter)
{
int depth = lst_depth (lst);
poly_bb_p pbb = LST_PBB (lst_find_first_pbb (lst));
gcc_assert (LST_LOOP_P (lst));
pbb_number_of_iterations_at_time (pbb, psct_dynamic_dim (pbb, depth), niter);
}
/* Updates the scattering of PBB to be at the DEWEY number in the loop
at depth LEVEL. */
static inline void
pbb_update_scattering (poly_bb_p pbb, graphite_dim_t level, int dewey)
{
graphite_dim_t sched = psct_static_dim (pbb, level);
isl_space *d = isl_map_get_space (pbb->transformed);
isl_space *d1 = isl_space_range (d);
unsigned i, n = isl_space_dim (d1, isl_dim_out);
isl_space *d2 = isl_space_add_dims (d1, isl_dim_in, n);
isl_map *x = isl_map_universe (d2);
x = isl_map_fix_si (x, isl_dim_out, sched, dewey);
for (i = 0; i < n; i++)
if (i != sched)
x = isl_map_equate (x, isl_dim_in, i, isl_dim_out, i);
pbb->transformed = isl_map_apply_range (pbb->transformed, x);
}
/* Updates the scattering of all the PBBs under LST to be at the DEWEY
number in the loop at depth LEVEL. */
static inline void
lst_update_scattering_under (lst_p lst, int level, int dewey)
{
int i;
lst_p l;
gcc_assert (lst && level >= 0 && dewey >= 0);
if (LST_LOOP_P (lst))
for (i = 0; VEC_iterate (lst_p, LST_SEQ (lst), i, l); i++)
lst_update_scattering_under (l, level, dewey);
else
pbb_update_scattering (LST_PBB (lst), level, dewey);
}
/* Updates the all the scattering levels of all the PBBs under
LST. */
static inline void
lst_update_scattering (lst_p lst)
{
int i;
lst_p l;
if (!lst)
return;
if (LST_LOOP_FATHER (lst))
{
lst_p father = LST_LOOP_FATHER (lst);
int dewey = lst_dewey_number (lst);
int level = lst_depth (lst);
gcc_assert (lst && father && dewey >= 0 && level >= 0);
for (i = dewey; VEC_iterate (lst_p, LST_SEQ (father), i, l); i++)
lst_update_scattering_under (l, level, i);
}
if (LST_LOOP_P (lst))
for (i = 0; VEC_iterate (lst_p, LST_SEQ (lst), i, l); i++)
lst_update_scattering (l);
}
/* Inserts LST1 before LST2 if BEFORE is true; inserts LST1 after LST2
if BEFORE is false. */
static inline void
lst_insert_in_sequence (lst_p lst1, lst_p lst2, bool before)
{
lst_p father;
int dewey;
/* Do not insert empty loops. */
if (!lst1 || lst_empty_p (lst1))
return;
father = LST_LOOP_FATHER (lst2);
dewey = lst_dewey_number (lst2);
gcc_assert (lst2 && father && dewey >= 0);
VEC_safe_insert (lst_p, heap, LST_SEQ (father), before ? dewey : dewey + 1,
lst1);
LST_LOOP_FATHER (lst1) = father;
}
/* Replaces LST1 with LST2. */
static inline void
lst_replace (lst_p lst1, lst_p lst2)
{
lst_p father;
int dewey;
if (!lst2 || lst_empty_p (lst2))
return;
father = LST_LOOP_FATHER (lst1);
dewey = lst_dewey_number (lst1);
LST_LOOP_FATHER (lst2) = father;
VEC_replace (lst_p, LST_SEQ (father), dewey, lst2);
}
/* Returns a copy of ROOT where LST has been replaced by a copy of the
LSTs A B C in this sequence. */
static inline lst_p
lst_substitute_3 (lst_p root, lst_p lst, lst_p a, lst_p b, lst_p c)
{
int i;
lst_p l;
VEC (lst_p, heap) *seq;
if (!root)
return NULL;
gcc_assert (lst && root != lst);
if (!LST_LOOP_P (root))
return new_lst_stmt (LST_PBB (root));
seq = VEC_alloc (lst_p, heap, 5);
for (i = 0; VEC_iterate (lst_p, LST_SEQ (root), i, l); i++)
if (l != lst)
VEC_safe_push (lst_p, heap, seq, lst_substitute_3 (l, lst, a, b, c));
else
{
if (!lst_empty_p (a))
VEC_safe_push (lst_p, heap, seq, copy_lst (a));
if (!lst_empty_p (b))
VEC_safe_push (lst_p, heap, seq, copy_lst (b));
if (!lst_empty_p (c))
VEC_safe_push (lst_p, heap, seq, copy_lst (c));
}
return new_lst_loop (seq);
}
/* Moves LST before LOOP if BEFORE is true, and after the LOOP if
BEFORE is false. */
static inline void
lst_distribute_lst (lst_p loop, lst_p lst, bool before)
{
int loop_depth = lst_depth (loop);
int depth = lst_depth (lst);
int nb_loops = depth - loop_depth;
gcc_assert (lst && loop && LST_LOOP_P (loop) && nb_loops > 0);
lst_remove_from_sequence (lst);
lst_insert_in_sequence (lst_create_nest (nb_loops, lst), loop, before);
}
/* Removes from LOOP all the statements before/after and including PBB
if BEFORE is true/false. Returns the negation of BEFORE when the
statement PBB has been found. */
static inline bool
lst_remove_all_before_including_pbb (lst_p loop, poly_bb_p pbb, bool before)
{
int i;
lst_p l;
if (!loop || !LST_LOOP_P (loop))
return before;
for (i = 0; VEC_iterate (lst_p, LST_SEQ (loop), i, l);)
if (LST_LOOP_P (l))
{
before = lst_remove_all_before_including_pbb (l, pbb, before);
if (VEC_length (lst_p, LST_SEQ (l)) == 0)
{
VEC_ordered_remove (lst_p, LST_SEQ (loop), i);
free_lst (l);
}
else
i++;
}
else
{
if (before)
{
if (LST_PBB (l) == pbb)
before = false;
VEC_ordered_remove (lst_p, LST_SEQ (loop), i);
free_lst (l);
}
else if (LST_PBB (l) == pbb)
{
before = true;
VEC_ordered_remove (lst_p, LST_SEQ (loop), i);
free_lst (l);
}
else
i++;
}
return before;
}
/* Removes from LOOP all the statements before/after and excluding PBB
if BEFORE is true/false; Returns the negation of BEFORE when the
statement PBB has been found. */
static inline bool
lst_remove_all_before_excluding_pbb (lst_p loop, poly_bb_p pbb, bool before)
{
int i;
lst_p l;
if (!loop || !LST_LOOP_P (loop))
return before;
for (i = 0; VEC_iterate (lst_p, LST_SEQ (loop), i, l);)
if (LST_LOOP_P (l))
{
before = lst_remove_all_before_excluding_pbb (l, pbb, before);
if (VEC_length (lst_p, LST_SEQ (l)) == 0)
{
VEC_ordered_remove (lst_p, LST_SEQ (loop), i);
free_lst (l);
continue;
}
i++;
}
else
{
if (before && LST_PBB (l) != pbb)
{
VEC_ordered_remove (lst_p, LST_SEQ (loop), i);
free_lst (l);
continue;
}
i++;
if (LST_PBB (l) == pbb)
before = before ? false : true;
}
return before;
}
/* A SCOP is a Static Control Part of the program, simple enough to be
represented in polyhedral form. */
struct scop
{
/* A SCOP is defined as a SESE region. */
void *region;
/* Number of parameters in SCoP. */
graphite_dim_t nb_params;
/* All the basic blocks in this scop that contain memory references
and that will be represented as statements in the polyhedral
representation. */
VEC (poly_bb_p, heap) *bbs;
/* Original, transformed and saved schedules. */
lst_p original_schedule, transformed_schedule, saved_schedule;
/* The context describes known restrictions concerning the parameters
and relations in between the parameters.
void f (int8_t a, uint_16_t b) {
c = 2 a + b;
...
}
Here we can add these restrictions to the context:
-128 >= a >= 127
0 >= b >= 65,535
c = 2a + b */
isl_set *context;
/* The context used internally by ISL. */
isl_ctx *ctx;
/* The original dependence relations:
RAW are read after write dependences,
WAR are write after read dependences,
WAW are write after write dependences. */
isl_union_map *must_raw, *may_raw, *must_raw_no_source, *may_raw_no_source,
*must_war, *may_war, *must_war_no_source, *may_war_no_source,
*must_waw, *may_waw, *must_waw_no_source, *may_waw_no_source;
/* A hashtable of the data dependence relations for the original
scattering. */
htab_t original_pddrs;
/* True when the scop has been converted to its polyhedral
representation. */
bool poly_scop_p;
};
#define SCOP_BBS(S) (S->bbs)
#define SCOP_REGION(S) ((sese) S->region)
#define SCOP_CONTEXT(S) (NULL)
#define SCOP_ORIGINAL_PDDRS(S) (S->original_pddrs)
#define SCOP_ORIGINAL_SCHEDULE(S) (S->original_schedule)
#define SCOP_TRANSFORMED_SCHEDULE(S) (S->transformed_schedule)
#define SCOP_SAVED_SCHEDULE(S) (S->saved_schedule)
#define POLY_SCOP_P(S) (S->poly_scop_p)
extern scop_p new_scop (void *);
extern void free_scop (scop_p);
extern void free_scops (VEC (scop_p, heap) *);
extern void print_generated_program (FILE *, scop_p);
extern void debug_generated_program (scop_p);
extern void print_scattering_function (FILE *, poly_bb_p, int);
extern void print_scattering_functions (FILE *, scop_p, int);
extern void debug_scattering_function (poly_bb_p, int);
extern void debug_scattering_functions (scop_p, int);
extern int scop_max_loop_depth (scop_p);
extern int unify_scattering_dimensions (scop_p);
extern bool apply_poly_transforms (scop_p);
extern bool graphite_legal_transform (scop_p);
extern void cloog_checksum (scop_p);
/* Set the region of SCOP to REGION. */
static inline void
scop_set_region (scop_p scop, void *region)
{
scop->region = region;
}
/* Returns the number of parameters for SCOP. */
static inline graphite_dim_t
scop_nb_params (scop_p scop)
{
return scop->nb_params;
}
/* Set the number of params of SCOP to NB_PARAMS. */
static inline void
scop_set_nb_params (scop_p scop, graphite_dim_t nb_params)
{
scop->nb_params = nb_params;
}
/* Allocates a new empty poly_scattering structure. */
static inline poly_scattering_p
poly_scattering_new (void)
{
poly_scattering_p res = XNEW (struct poly_scattering);
res->nb_local_variables = 0;
res->nb_scattering = 0;
return res;
}
/* Free a poly_scattering structure. */
static inline void
poly_scattering_free (poly_scattering_p s)
{
free (s);
}
/* Copies S and return a new scattering. */
static inline poly_scattering_p
poly_scattering_copy (poly_scattering_p s)
{
poly_scattering_p res = poly_scattering_new ();
res->nb_local_variables = s->nb_local_variables;
res->nb_scattering = s->nb_scattering;
return res;
}
/* Saves the transformed scattering of PBB. */
static inline void
store_scattering_pbb (poly_bb_p pbb)
{
isl_map_free (pbb->saved);
pbb->saved = isl_map_copy (pbb->transformed);
}
/* Stores the SCOP_TRANSFORMED_SCHEDULE to SCOP_SAVED_SCHEDULE. */
static inline void
store_lst_schedule (scop_p scop)
{
if (SCOP_SAVED_SCHEDULE (scop))
free_lst (SCOP_SAVED_SCHEDULE (scop));
SCOP_SAVED_SCHEDULE (scop) = copy_lst (SCOP_TRANSFORMED_SCHEDULE (scop));
}
/* Restores the SCOP_TRANSFORMED_SCHEDULE from SCOP_SAVED_SCHEDULE. */
static inline void
restore_lst_schedule (scop_p scop)
{
if (SCOP_TRANSFORMED_SCHEDULE (scop))
free_lst (SCOP_TRANSFORMED_SCHEDULE (scop));
SCOP_TRANSFORMED_SCHEDULE (scop) = copy_lst (SCOP_SAVED_SCHEDULE (scop));
}
/* Saves the scattering for all the pbbs in the SCOP. */
static inline void
store_scattering (scop_p scop)
{
int i;
poly_bb_p pbb;
for (i = 0; VEC_iterate (poly_bb_p, SCOP_BBS (scop), i, pbb); i++)
store_scattering_pbb (pbb);
store_lst_schedule (scop);
}
/* Restores the scattering of PBB. */
static inline void
restore_scattering_pbb (poly_bb_p pbb)
{
gcc_assert (pbb->saved);
isl_map_free (pbb->transformed);
pbb->transformed = isl_map_copy (pbb->saved);
}
/* Restores the scattering for all the pbbs in the SCOP. */
static inline void
restore_scattering (scop_p scop)
{
int i;
poly_bb_p pbb;
for (i = 0; VEC_iterate (poly_bb_p, SCOP_BBS (scop), i, pbb); i++)
restore_scattering_pbb (pbb);
restore_lst_schedule (scop);
}
bool graphite_legal_transform (scop_p);
poly_bb_p find_pbb_via_hash (htab_t, basic_block);
bool loop_is_parallel_p (loop_p, htab_t, int);
scop_p get_loop_body_pbbs (loop_p, htab_t, VEC (poly_bb_p, heap) **);
isl_map *reverse_loop_at_level (poly_bb_p, int);
isl_union_map *reverse_loop_for_pbbs (scop_p, VEC (poly_bb_p, heap) *, int);
__isl_give isl_union_map *extend_schedule (__isl_take isl_union_map *);
#endif
|