forked from graphitemaster/gmqcc
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathir.cpp
4094 lines (3612 loc) · 127 KB
/
ir.cpp
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
#include <stdlib.h>
#include <string.h>
#include "gmqcc.h"
#include "ir.h"
/***********************************************************************
* Type sizes used at multiple points in the IR codegen
*/
const char *type_name[TYPE_COUNT] = {
"void",
"string",
"float",
"vector",
"entity",
"field",
"function",
"pointer",
"integer",
"variant",
"struct",
"union",
"array",
"nil",
"<no-expression>"
};
static size_t type_sizeof_[TYPE_COUNT] = {
1, /* TYPE_VOID */
1, /* TYPE_STRING */
1, /* TYPE_FLOAT */
3, /* TYPE_VECTOR */
1, /* TYPE_ENTITY */
1, /* TYPE_FIELD */
1, /* TYPE_FUNCTION */
1, /* TYPE_POINTER */
1, /* TYPE_INTEGER */
3, /* TYPE_VARIANT */
0, /* TYPE_STRUCT */
0, /* TYPE_UNION */
0, /* TYPE_ARRAY */
0, /* TYPE_NIL */
0, /* TYPE_NOESPR */
};
const uint16_t type_store_instr[TYPE_COUNT] = {
INSTR_STORE_F, /* should use I when having integer support */
INSTR_STORE_S,
INSTR_STORE_F,
INSTR_STORE_V,
INSTR_STORE_ENT,
INSTR_STORE_FLD,
INSTR_STORE_FNC,
INSTR_STORE_ENT, /* should use I */
#if 0
INSTR_STORE_I, /* integer type */
#else
INSTR_STORE_F,
#endif
INSTR_STORE_V, /* variant, should never be accessed */
VINSTR_END, /* struct */
VINSTR_END, /* union */
VINSTR_END, /* array */
VINSTR_END, /* nil */
VINSTR_END, /* noexpr */
};
const uint16_t field_store_instr[TYPE_COUNT] = {
INSTR_STORE_FLD,
INSTR_STORE_FLD,
INSTR_STORE_FLD,
INSTR_STORE_V,
INSTR_STORE_FLD,
INSTR_STORE_FLD,
INSTR_STORE_FLD,
INSTR_STORE_FLD,
#if 0
INSTR_STORE_FLD, /* integer type */
#else
INSTR_STORE_FLD,
#endif
INSTR_STORE_V, /* variant, should never be accessed */
VINSTR_END, /* struct */
VINSTR_END, /* union */
VINSTR_END, /* array */
VINSTR_END, /* nil */
VINSTR_END, /* noexpr */
};
const uint16_t type_storep_instr[TYPE_COUNT] = {
INSTR_STOREP_F, /* should use I when having integer support */
INSTR_STOREP_S,
INSTR_STOREP_F,
INSTR_STOREP_V,
INSTR_STOREP_ENT,
INSTR_STOREP_FLD,
INSTR_STOREP_FNC,
INSTR_STOREP_ENT, /* should use I */
#if 0
INSTR_STOREP_ENT, /* integer type */
#else
INSTR_STOREP_F,
#endif
INSTR_STOREP_V, /* variant, should never be accessed */
VINSTR_END, /* struct */
VINSTR_END, /* union */
VINSTR_END, /* array */
VINSTR_END, /* nil */
VINSTR_END, /* noexpr */
};
const uint16_t type_eq_instr[TYPE_COUNT] = {
INSTR_EQ_F, /* should use I when having integer support */
INSTR_EQ_S,
INSTR_EQ_F,
INSTR_EQ_V,
INSTR_EQ_E,
INSTR_EQ_E, /* FLD has no comparison */
INSTR_EQ_FNC,
INSTR_EQ_E, /* should use I */
#if 0
INSTR_EQ_I,
#else
INSTR_EQ_F,
#endif
INSTR_EQ_V, /* variant, should never be accessed */
VINSTR_END, /* struct */
VINSTR_END, /* union */
VINSTR_END, /* array */
VINSTR_END, /* nil */
VINSTR_END, /* noexpr */
};
const uint16_t type_ne_instr[TYPE_COUNT] = {
INSTR_NE_F, /* should use I when having integer support */
INSTR_NE_S,
INSTR_NE_F,
INSTR_NE_V,
INSTR_NE_E,
INSTR_NE_E, /* FLD has no comparison */
INSTR_NE_FNC,
INSTR_NE_E, /* should use I */
#if 0
INSTR_NE_I,
#else
INSTR_NE_F,
#endif
INSTR_NE_V, /* variant, should never be accessed */
VINSTR_END, /* struct */
VINSTR_END, /* union */
VINSTR_END, /* array */
VINSTR_END, /* nil */
VINSTR_END, /* noexpr */
};
const uint16_t type_not_instr[TYPE_COUNT] = {
INSTR_NOT_F, /* should use I when having integer support */
VINSTR_END, /* not to be used, depends on string related -f flags */
INSTR_NOT_F,
INSTR_NOT_V,
INSTR_NOT_ENT,
INSTR_NOT_ENT,
INSTR_NOT_FNC,
INSTR_NOT_ENT, /* should use I */
#if 0
INSTR_NOT_I, /* integer type */
#else
INSTR_NOT_F,
#endif
INSTR_NOT_V, /* variant, should never be accessed */
VINSTR_END, /* struct */
VINSTR_END, /* union */
VINSTR_END, /* array */
VINSTR_END, /* nil */
VINSTR_END, /* noexpr */
};
/* protos */
static void ir_function_dump(ir_function*, char *ind, int (*oprintf)(const char*,...));
static ir_value* ir_block_create_general_instr(ir_block *self, lex_ctx_t, const char *label,
int op, ir_value *a, ir_value *b, qc_type outype);
static bool GMQCC_WARN ir_block_create_store(ir_block*, lex_ctx_t, ir_value *target, ir_value *what);
static void ir_block_dump(ir_block*, char *ind, int (*oprintf)(const char*,...));
static bool ir_instr_op(ir_instr*, int op, ir_value *value, bool writing);
static void ir_instr_dump(ir_instr* in, char *ind, int (*oprintf)(const char*,...));
/* error functions */
static void irerror(lex_ctx_t ctx, const char *msg, ...)
{
va_list ap;
va_start(ap, msg);
con_cvprintmsg(ctx, LVL_ERROR, "internal error", msg, ap);
va_end(ap);
}
static bool GMQCC_WARN irwarning(lex_ctx_t ctx, int warntype, const char *fmt, ...)
{
bool r;
va_list ap;
va_start(ap, fmt);
r = vcompile_warning(ctx, warntype, fmt, ap);
va_end(ap);
return r;
}
/***********************************************************************
* Vector utility functions
*/
static bool GMQCC_WARN vec_ir_value_find(std::vector<ir_value *> &vec, const ir_value *what, size_t *idx)
{
for (auto &it : vec) {
if (it != what)
continue;
if (idx)
*idx = &it - &vec[0];
return true;
}
return false;
}
static bool GMQCC_WARN vec_ir_block_find(std::vector<ir_block *> &vec, ir_block *what, size_t *idx)
{
for (auto &it : vec) {
if (it != what)
continue;
if (idx)
*idx = &it - &vec[0];
return true;
}
return false;
}
static bool GMQCC_WARN vec_ir_instr_find(std::vector<ir_instr *> &vec, ir_instr *what, size_t *idx)
{
for (auto &it : vec) {
if (it != what)
continue;
if (idx)
*idx = &it - &vec[0];
return true;
}
return false;
}
/***********************************************************************
* IR Builder
*/
static void ir_block_delete_quick(ir_block* self);
static void ir_instr_delete_quick(ir_instr *self);
static void ir_function_delete_quick(ir_function *self);
ir_builder::ir_builder(const std::string& modulename)
: m_name(modulename),
m_code(new code_t)
{
m_htglobals = util_htnew(IR_HT_SIZE);
m_htfields = util_htnew(IR_HT_SIZE);
m_htfunctions = util_htnew(IR_HT_SIZE);
m_nil = new ir_value("nil", store_value, TYPE_NIL);
m_nil->m_cvq = CV_CONST;
for (size_t i = 0; i != IR_MAX_VINSTR_TEMPS; ++i) {
/* we write to them, but they're not supposed to be used outside the IR, so
* let's not allow the generation of ir_instrs which use these.
* So it's a constant noexpr.
*/
m_vinstr_temp[i] = new ir_value("vinstr_temp", store_value, TYPE_NOEXPR);
m_vinstr_temp[i]->m_cvq = CV_CONST;
}
}
ir_builder::~ir_builder()
{
util_htdel(m_htglobals);
util_htdel(m_htfields);
util_htdel(m_htfunctions);
for (auto& f : m_functions)
ir_function_delete_quick(f.release());
m_functions.clear(); // delete them now before deleting the rest:
delete m_nil;
for (size_t i = 0; i != IR_MAX_VINSTR_TEMPS; ++i) {
delete m_vinstr_temp[i];
}
m_extparams.clear();
m_extparam_protos.clear();
}
ir_function* ir_builder::createFunction(const std::string& name, qc_type outtype)
{
ir_function *fn = (ir_function*)util_htget(m_htfunctions, name.c_str());
if (fn)
return nullptr;
fn = new ir_function(this, outtype);
fn->m_name = name;
m_functions.emplace_back(fn);
util_htset(m_htfunctions, name.c_str(), fn);
fn->m_value = createGlobal(fn->m_name, TYPE_FUNCTION);
if (!fn->m_value) {
delete fn;
return nullptr;
}
fn->m_value->m_hasvalue = true;
fn->m_value->m_outtype = outtype;
fn->m_value->m_constval.vfunc = fn;
fn->m_value->m_context = fn->m_context;
return fn;
}
ir_value* ir_builder::createGlobal(const std::string& name, qc_type vtype)
{
ir_value *ve;
if (name[0] != '#')
{
ve = (ir_value*)util_htget(m_htglobals, name.c_str());
if (ve) {
return nullptr;
}
}
ve = new ir_value(std::string(name), store_global, vtype);
m_globals.emplace_back(ve);
util_htset(m_htglobals, name.c_str(), ve);
return ve;
}
ir_value* ir_builder::get_va_count()
{
if (m_reserved_va_count)
return m_reserved_va_count;
return (m_reserved_va_count = createGlobal("reserved:va_count", TYPE_FLOAT));
}
ir_value* ir_builder::createField(const std::string& name, qc_type vtype)
{
ir_value *ve = (ir_value*)util_htget(m_htfields, name.c_str());
if (ve) {
return nullptr;
}
ve = new ir_value(std::string(name), store_global, TYPE_FIELD);
ve->m_fieldtype = vtype;
m_fields.emplace_back(ve);
util_htset(m_htfields, name.c_str(), ve);
return ve;
}
/***********************************************************************
*IR Function
*/
static bool ir_function_naive_phi(ir_function*);
static void ir_function_enumerate(ir_function*);
static bool ir_function_calculate_liferanges(ir_function*);
static bool ir_function_allocate_locals(ir_function*);
ir_function::ir_function(ir_builder* owner_, qc_type outtype_)
: m_owner(owner_),
m_name("<@unnamed>"),
m_outtype(outtype_)
{
m_context.file = "<@no context>";
m_context.line = 0;
}
ir_function::~ir_function()
{
}
static void ir_function_delete_quick(ir_function *self)
{
for (auto& b : self->m_blocks)
ir_block_delete_quick(b.release());
delete self;
}
static void ir_function_collect_value(ir_function *self, ir_value *v)
{
self->m_values.emplace_back(v);
}
ir_block* ir_function_create_block(lex_ctx_t ctx, ir_function *self, const char *label)
{
ir_block* bn = new ir_block(self, label ? std::string(label) : std::string());
bn->m_context = ctx;
self->m_blocks.emplace_back(bn);
if ((self->m_flags & IR_FLAG_BLOCK_COVERAGE) && self->m_owner->m_coverage_func)
(void)ir_block_create_call(bn, ctx, nullptr, self->m_owner->m_coverage_func, false);
return bn;
}
static bool instr_is_operation(uint16_t op)
{
return ( (op >= INSTR_MUL_F && op <= INSTR_GT) ||
(op >= INSTR_LOAD_F && op <= INSTR_LOAD_FNC) ||
(op == INSTR_ADDRESS) ||
(op >= INSTR_NOT_F && op <= INSTR_NOT_FNC) ||
(op >= INSTR_AND && op <= INSTR_BITOR) ||
(op >= INSTR_CALL0 && op <= INSTR_CALL8) ||
(op >= VINSTR_BITAND_V && op <= VINSTR_NEG_V) );
}
static bool ir_function_pass_peephole(ir_function *self)
{
for (auto& bp : self->m_blocks) {
ir_block *block = bp.get();
for (size_t i = 0; i < block->m_instr.size(); ++i) {
ir_instr *inst;
inst = block->m_instr[i];
if (i >= 1 &&
(inst->m_opcode >= INSTR_STORE_F &&
inst->m_opcode <= INSTR_STORE_FNC))
{
ir_instr *store;
ir_instr *oper;
ir_value *value;
store = inst;
oper = block->m_instr[i-1];
if (!instr_is_operation(oper->m_opcode))
continue;
/* Don't change semantics of MUL_VF in engines where these may not alias. */
if (OPTS_FLAG(LEGACY_VECTOR_MATHS)) {
if (oper->m_opcode == INSTR_MUL_VF && oper->_m_ops[2]->m_memberof == oper->_m_ops[1])
continue;
if (oper->m_opcode == INSTR_MUL_FV && oper->_m_ops[1]->m_memberof == oper->_m_ops[2])
continue;
}
value = oper->_m_ops[0];
/* only do it for SSA values */
if (value->m_store != store_value)
continue;
/* don't optimize out the temp if it's used later again */
if (value->m_reads.size() != 1)
continue;
/* The very next store must use this value */
if (value->m_reads[0] != store)
continue;
/* And of course the store must _read_ from it, so it's in
* OP 1 */
if (store->_m_ops[1] != value)
continue;
++opts_optimizationcount[OPTIM_PEEPHOLE];
(void)!ir_instr_op(oper, 0, store->_m_ops[0], true);
block->m_instr.erase(block->m_instr.begin() + i);
delete store;
}
else if (inst->m_opcode == VINSTR_COND)
{
/* COND on a value resulting from a NOT could
* remove the NOT and swap its operands
*/
while (true) {
ir_block *tmp;
size_t inotid;
ir_instr *inot;
ir_value *value;
value = inst->_m_ops[0];
if (value->m_store != store_value || value->m_reads.size() != 1 || value->m_reads[0] != inst)
break;
inot = value->m_writes[0];
if (inot->_m_ops[0] != value ||
inot->m_opcode < INSTR_NOT_F ||
inot->m_opcode > INSTR_NOT_FNC ||
inot->m_opcode == INSTR_NOT_V || /* can't do these */
inot->m_opcode == INSTR_NOT_S)
{
break;
}
/* count */
++opts_optimizationcount[OPTIM_PEEPHOLE];
/* change operand */
(void)!ir_instr_op(inst, 0, inot->_m_ops[1], false);
/* remove NOT */
tmp = inot->m_owner;
for (inotid = 0; inotid < tmp->m_instr.size(); ++inotid) {
if (tmp->m_instr[inotid] == inot)
break;
}
if (inotid >= tmp->m_instr.size()) {
compile_error(inst->m_context, "sanity-check failed: failed to find instruction to optimize out");
return false;
}
tmp->m_instr.erase(tmp->m_instr.begin() + inotid);
delete inot;
/* swap ontrue/onfalse */
tmp = inst->m_bops[0];
inst->m_bops[0] = inst->m_bops[1];
inst->m_bops[1] = tmp;
}
continue;
}
}
}
return true;
}
static bool ir_function_pass_tailrecursion(ir_function *self)
{
size_t p;
for (auto& bp : self->m_blocks) {
ir_block *block = bp.get();
ir_value *funcval;
ir_instr *ret, *call, *store = nullptr;
if (!block->m_final || block->m_instr.size() < 2)
continue;
ret = block->m_instr.back();
if (ret->m_opcode != INSTR_DONE && ret->m_opcode != INSTR_RETURN)
continue;
call = block->m_instr[block->m_instr.size()-2];
if (call->m_opcode >= INSTR_STORE_F && call->m_opcode <= INSTR_STORE_FNC) {
/* account for the unoptimized
* CALL
* STORE %return, %tmp
* RETURN %tmp
* version
*/
if (block->m_instr.size() < 3)
continue;
store = call;
call = block->m_instr[block->m_instr.size()-3];
}
if (call->m_opcode < INSTR_CALL0 || call->m_opcode > INSTR_CALL8)
continue;
if (store) {
/* optimize out the STORE */
if (ret->_m_ops[0] &&
ret->_m_ops[0] == store->_m_ops[0] &&
store->_m_ops[1] == call->_m_ops[0])
{
++opts_optimizationcount[OPTIM_PEEPHOLE];
call->_m_ops[0] = store->_m_ops[0];
block->m_instr.erase(block->m_instr.end()-2);
delete store;
}
else
continue;
}
if (!call->_m_ops[0])
continue;
funcval = call->_m_ops[1];
if (!funcval)
continue;
if (funcval->m_vtype != TYPE_FUNCTION || funcval->m_constval.vfunc != self)
continue;
/* now we have a CALL and a RET, check if it's a tailcall */
if (ret->_m_ops[0] && call->_m_ops[0] != ret->_m_ops[0])
continue;
++opts_optimizationcount[OPTIM_TAIL_RECURSION];
block->m_instr.erase(block->m_instr.end()-2, block->m_instr.end());
block->m_final = false; /* open it back up */
/* emite parameter-stores */
for (p = 0; p < call->m_params.size(); ++p) {
/* assert(call->params_count <= self->locals_count); */
if (!ir_block_create_store(block, call->m_context, self->m_locals[p].get(), call->m_params[p])) {
irerror(call->m_context, "failed to create tailcall store instruction for parameter %i", (int)p);
return false;
}
}
if (!ir_block_create_jump(block, call->m_context, self->m_blocks[0].get())) {
irerror(call->m_context, "failed to create tailcall jump");
return false;
}
delete call;
delete ret;
}
return true;
}
bool ir_function_finalize(ir_function *self)
{
if (self->m_builtin)
return true;
for (auto& lp : self->m_locals) {
ir_value *v = lp.get();
if (v->m_reads.empty() && v->m_writes.size() && !(v->m_flags & IR_FLAG_NOREF)) {
// if it's a vector check to ensure all it's members are unused before
// claiming it's unused, otherwise skip the vector entierly
if (v->m_vtype == TYPE_VECTOR)
{
size_t mask = (1 << 3) - 1, bits = 0;
for (size_t i = 0; i < 3; i++)
if (!v->m_members[i] || (v->m_members[i]->m_reads.empty()
&& v->m_members[i]->m_writes.size()))
bits |= (1 << i);
// all components are unused so just report the vector
if (bits == mask && irwarning(v->m_context, WARN_UNUSED_VARIABLE,
"unused variable: `%s`", v->m_name.c_str()))
return false;
else if (bits != mask)
// individual components are unused so mention them
for (size_t i = 0; i < 3; i++)
if ((bits & (1 << i))
&& irwarning(v->m_context, WARN_UNUSED_COMPONENT,
"unused vector component: `%s.%c`", v->m_name.c_str(), "xyz"[i]))
return false;
}
// just a standard variable
else if (irwarning(v->m_context, WARN_UNUSED_VARIABLE,
"unused variable: `%s`", v->m_name.c_str())) return false;
}
}
if (OPTS_OPTIMIZATION(OPTIM_PEEPHOLE)) {
if (!ir_function_pass_peephole(self)) {
irerror(self->m_context, "generic optimization pass broke something in `%s`", self->m_name.c_str());
return false;
}
}
if (OPTS_OPTIMIZATION(OPTIM_TAIL_RECURSION)) {
if (!ir_function_pass_tailrecursion(self)) {
irerror(self->m_context, "tail-recursion optimization pass broke something in `%s`", self->m_name.c_str());
return false;
}
}
if (!ir_function_naive_phi(self)) {
irerror(self->m_context, "internal error: ir_function_naive_phi failed");
return false;
}
for (auto& lp : self->m_locals) {
ir_value *v = lp.get();
if (v->m_vtype == TYPE_VECTOR ||
(v->m_vtype == TYPE_FIELD && v->m_outtype == TYPE_VECTOR))
{
v->vectorMember(0);
v->vectorMember(1);
v->vectorMember(2);
}
}
for (auto& vp : self->m_values) {
ir_value *v = vp.get();
if (v->m_vtype == TYPE_VECTOR ||
(v->m_vtype == TYPE_FIELD && v->m_outtype == TYPE_VECTOR))
{
v->vectorMember(0);
v->vectorMember(1);
v->vectorMember(2);
}
}
ir_function_enumerate(self);
if (!ir_function_calculate_liferanges(self))
return false;
if (!ir_function_allocate_locals(self))
return false;
return true;
}
ir_value* ir_function_create_local(ir_function *self, const std::string& name, qc_type vtype, bool param)
{
ir_value *ve;
if (param &&
!self->m_locals.empty() &&
self->m_locals.back()->m_store != store_param)
{
irerror(self->m_context, "cannot add parameters after adding locals");
return nullptr;
}
ve = new ir_value(std::string(name), (param ? store_param : store_local), vtype);
if (param)
ve->m_locked = true;
self->m_locals.emplace_back(ve);
return ve;
}
/***********************************************************************
*IR Block
*/
ir_block::ir_block(ir_function* owner, const std::string& name)
: m_owner(owner),
m_label(name)
{
m_context.file = "<@no context>";
m_context.line = 0;
}
ir_block::~ir_block()
{
for (auto &i : m_instr)
delete i;
}
static void ir_block_delete_quick(ir_block* self)
{
for (auto &i : self->m_instr)
ir_instr_delete_quick(i);
self->m_instr.clear();
delete self;
}
/***********************************************************************
*IR Instructions
*/
ir_instr::ir_instr(lex_ctx_t ctx, ir_block* owner_, int op)
: m_opcode(op),
m_context(ctx),
m_owner(owner_)
{
}
ir_instr::~ir_instr()
{
// The following calls can only delete from
// vectors, we still want to delete this instruction
// so ignore the return value. Since with the warn_unused_result attribute
// gcc doesn't care about an explicit: (void)foo(); to ignore the result,
// I have to improvise here and use if(foo());
for (auto &it : m_phi) {
size_t idx;
if (vec_ir_instr_find(it.value->m_writes, this, &idx))
it.value->m_writes.erase(it.value->m_writes.begin() + idx);
if (vec_ir_instr_find(it.value->m_reads, this, &idx))
it.value->m_reads.erase(it.value->m_reads.begin() + idx);
}
for (auto &it : m_params) {
size_t idx;
if (vec_ir_instr_find(it->m_writes, this, &idx))
it->m_writes.erase(it->m_writes.begin() + idx);
if (vec_ir_instr_find(it->m_reads, this, &idx))
it->m_reads.erase(it->m_reads.begin() + idx);
}
(void)!ir_instr_op(this, 0, nullptr, false);
(void)!ir_instr_op(this, 1, nullptr, false);
(void)!ir_instr_op(this, 2, nullptr, false);
}
static void ir_instr_delete_quick(ir_instr *self)
{
self->m_phi.clear();
self->m_params.clear();
self->_m_ops[0] = nullptr;
self->_m_ops[1] = nullptr;
self->_m_ops[2] = nullptr;
delete self;
}
static bool ir_instr_op(ir_instr *self, int op, ir_value *v, bool writing)
{
if (v && v->m_vtype == TYPE_NOEXPR) {
irerror(self->m_context, "tried to use a NOEXPR value");
return false;
}
if (self->_m_ops[op]) {
size_t idx;
if (writing && vec_ir_instr_find(self->_m_ops[op]->m_writes, self, &idx))
self->_m_ops[op]->m_writes.erase(self->_m_ops[op]->m_writes.begin() + idx);
else if (vec_ir_instr_find(self->_m_ops[op]->m_reads, self, &idx))
self->_m_ops[op]->m_reads.erase(self->_m_ops[op]->m_reads.begin() + idx);
}
if (v) {
if (writing)
v->m_writes.push_back(self);
else
v->m_reads.push_back(self);
}
self->_m_ops[op] = v;
return true;
}
/***********************************************************************
*IR Value
*/
void ir_value::setCodeAddress(int32_t gaddr)
{
m_code.globaladdr = gaddr;
if (m_members[0]) m_members[0]->m_code.globaladdr = gaddr;
if (m_members[1]) m_members[1]->m_code.globaladdr = gaddr;
if (m_members[2]) m_members[2]->m_code.globaladdr = gaddr;
}
int32_t ir_value::codeAddress() const
{
if (m_store == store_return)
return OFS_RETURN + m_code.addroffset;
return m_code.globaladdr + m_code.addroffset;
}
ir_value::ir_value(std::string&& name_, store_type store_, qc_type vtype_)
: m_name(move(name_))
, m_vtype(vtype_)
, m_store(store_)
{
m_fieldtype = TYPE_VOID;
m_outtype = TYPE_VOID;
m_flags = 0;
m_cvq = CV_NONE;
m_hasvalue = false;
m_context.file = "<@no context>";
m_context.line = 0;
memset(&m_constval, 0, sizeof(m_constval));
memset(&m_code, 0, sizeof(m_code));
m_members[0] = nullptr;
m_members[1] = nullptr;
m_members[2] = nullptr;
m_memberof = nullptr;
m_unique_life = false;
m_locked = false;
m_callparam = false;
}
ir_value::ir_value(ir_function *owner, std::string&& name, store_type storetype, qc_type vtype)
: ir_value(move(name), storetype, vtype)
{
ir_function_collect_value(owner, this);
}
ir_value::~ir_value()
{
size_t i;
if (m_hasvalue) {
if (m_vtype == TYPE_STRING)
mem_d((void*)m_constval.vstring);
}
if (!(m_flags & IR_FLAG_SPLIT_VECTOR)) {
for (i = 0; i < 3; ++i) {
if (m_members[i])
delete m_members[i];
}
}
}
/* helper function */
ir_value* ir_builder::literalFloat(float value, bool add_to_list) {
ir_value *v = new ir_value("#IMMEDIATE", store_global, TYPE_FLOAT);
v->m_flags |= IR_FLAG_ERASABLE;
v->m_hasvalue = true;
v->m_cvq = CV_CONST;
v->m_constval.vfloat = value;
m_globals.emplace_back(v);
if (add_to_list)
m_const_floats.emplace_back(v);
return v;
}
ir_value* ir_value::vectorMember(unsigned int member)
{
std::string name;
ir_value *m;
if (member >= 3)
return nullptr;
if (m_members[member])
return m_members[member];
if (!m_name.empty()) {
char member_name[3] = { '_', char('x' + member), 0 };
name = m_name + member_name;
}
if (m_vtype == TYPE_VECTOR)
{
m = new ir_value(move(name), m_store, TYPE_FLOAT);
if (!m)
return nullptr;
m->m_context = m_context;
m_members[member] = m;
m->m_code.addroffset = member;
}
else if (m_vtype == TYPE_FIELD)
{
if (m_fieldtype != TYPE_VECTOR)
return nullptr;
m = new ir_value(move(name), m_store, TYPE_FIELD);
if (!m)
return nullptr;
m->m_fieldtype = TYPE_FLOAT;
m->m_context = m_context;
m_members[member] = m;
m->m_code.addroffset = member;
}
else
{
irerror(m_context, "invalid member access on %s", m_name.c_str());
return nullptr;
}
m->m_memberof = this;
return m;
}
size_t ir_value::size() const {
if (m_vtype == TYPE_FIELD && m_fieldtype == TYPE_VECTOR)
return type_sizeof_[TYPE_VECTOR];
return type_sizeof_[m_vtype];
}
bool ir_value::setFloat(float f)
{
if (m_vtype != TYPE_FLOAT)
return false;
m_constval.vfloat = f;
m_hasvalue = true;
return true;
}
bool ir_value::setFunc(int f)
{
if (m_vtype != TYPE_FUNCTION)
return false;
m_constval.vint = f;
m_hasvalue = true;
return true;
}
bool ir_value::setVector(vec3_t v)
{
if (m_vtype != TYPE_VECTOR)
return false;
m_constval.vvec = v;
m_hasvalue = true;
return true;
}
bool ir_value::setField(ir_value *fld)
{
if (m_vtype != TYPE_FIELD)
return false;
m_constval.vpointer = fld;
m_hasvalue = true;
return true;
}
bool ir_value::setString(const char *str)