1 //===- Record.cpp - Record implementation ---------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // Implement the tablegen record classes.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "Record.h"
15 #include "Error.h"
16 #include "llvm/Support/DataTypes.h"
17 #include "llvm/Support/Format.h"
18 #include "llvm/ADT/StringExtras.h"
19
20 using namespace llvm;
21
22 //===----------------------------------------------------------------------===//
23 // Type implementations
24 //===----------------------------------------------------------------------===//
25
26 BitRecTy BitRecTy::Shared;
27 IntRecTy IntRecTy::Shared;
28 StringRecTy StringRecTy::Shared;
29 CodeRecTy CodeRecTy::Shared;
30 DagRecTy DagRecTy::Shared;
31
dump() const32 void RecTy::dump() const { print(errs()); }
33
getListTy()34 ListRecTy *RecTy::getListTy() {
35 if (!ListTy)
36 ListTy = new ListRecTy(this);
37 return ListTy;
38 }
39
convertValue(BitsInit * BI)40 Init *BitRecTy::convertValue(BitsInit *BI) {
41 if (BI->getNumBits() != 1) return 0; // Only accept if just one bit!
42 return BI->getBit(0);
43 }
44
baseClassOf(const BitsRecTy * RHS) const45 bool BitRecTy::baseClassOf(const BitsRecTy *RHS) const {
46 return RHS->getNumBits() == 1;
47 }
48
convertValue(IntInit * II)49 Init *BitRecTy::convertValue(IntInit *II) {
50 int64_t Val = II->getValue();
51 if (Val != 0 && Val != 1) return 0; // Only accept 0 or 1 for a bit!
52
53 return new BitInit(Val != 0);
54 }
55
convertValue(TypedInit * VI)56 Init *BitRecTy::convertValue(TypedInit *VI) {
57 if (dynamic_cast<BitRecTy*>(VI->getType()))
58 return VI; // Accept variable if it is already of bit type!
59 return 0;
60 }
61
get(unsigned Sz)62 BitsRecTy *BitsRecTy::get(unsigned Sz) {
63 static std::vector<BitsRecTy*> Shared;
64 if (Sz >= Shared.size())
65 Shared.resize(Sz + 1);
66 BitsRecTy *&Ty = Shared[Sz];
67 if (!Ty)
68 Ty = new BitsRecTy(Sz);
69 return Ty;
70 }
71
getAsString() const72 std::string BitsRecTy::getAsString() const {
73 return "bits<" + utostr(Size) + ">";
74 }
75
convertValue(UnsetInit * UI)76 Init *BitsRecTy::convertValue(UnsetInit *UI) {
77 BitsInit *Ret = new BitsInit(Size);
78
79 for (unsigned i = 0; i != Size; ++i)
80 Ret->setBit(i, new UnsetInit());
81 return Ret;
82 }
83
convertValue(BitInit * UI)84 Init *BitsRecTy::convertValue(BitInit *UI) {
85 if (Size != 1) return 0; // Can only convert single bit.
86 BitsInit *Ret = new BitsInit(1);
87 Ret->setBit(0, UI);
88 return Ret;
89 }
90
91 /// canFitInBitfield - Return true if the number of bits is large enough to hold
92 /// the integer value.
canFitInBitfield(int64_t Value,unsigned NumBits)93 static bool canFitInBitfield(int64_t Value, unsigned NumBits) {
94 // For example, with NumBits == 4, we permit Values from [-7 .. 15].
95 return (NumBits >= sizeof(Value) * 8) ||
96 (Value >> NumBits == 0) || (Value >> (NumBits-1) == -1);
97 }
98
99 /// convertValue from Int initializer to bits type: Split the integer up into the
100 /// appropriate bits.
101 ///
convertValue(IntInit * II)102 Init *BitsRecTy::convertValue(IntInit *II) {
103 int64_t Value = II->getValue();
104 // Make sure this bitfield is large enough to hold the integer value.
105 if (!canFitInBitfield(Value, Size))
106 return 0;
107
108 BitsInit *Ret = new BitsInit(Size);
109 for (unsigned i = 0; i != Size; ++i)
110 Ret->setBit(i, new BitInit(Value & (1LL << i)));
111
112 return Ret;
113 }
114
convertValue(BitsInit * BI)115 Init *BitsRecTy::convertValue(BitsInit *BI) {
116 // If the number of bits is right, return it. Otherwise we need to expand or
117 // truncate.
118 if (BI->getNumBits() == Size) return BI;
119 return 0;
120 }
121
convertValue(TypedInit * VI)122 Init *BitsRecTy::convertValue(TypedInit *VI) {
123 if (BitsRecTy *BRT = dynamic_cast<BitsRecTy*>(VI->getType()))
124 if (BRT->Size == Size) {
125 BitsInit *Ret = new BitsInit(Size);
126 for (unsigned i = 0; i != Size; ++i)
127 Ret->setBit(i, new VarBitInit(VI, i));
128 return Ret;
129 }
130
131 if (Size == 1 && dynamic_cast<BitRecTy*>(VI->getType())) {
132 BitsInit *Ret = new BitsInit(1);
133 Ret->setBit(0, VI);
134 return Ret;
135 }
136
137 if (TernOpInit *Tern = dynamic_cast<TernOpInit*>(VI)) {
138 if (Tern->getOpcode() == TernOpInit::IF) {
139 Init *LHS = Tern->getLHS();
140 Init *MHS = Tern->getMHS();
141 Init *RHS = Tern->getRHS();
142
143 IntInit *MHSi = dynamic_cast<IntInit*>(MHS);
144 IntInit *RHSi = dynamic_cast<IntInit*>(RHS);
145
146 if (MHSi && RHSi) {
147 int64_t MHSVal = MHSi->getValue();
148 int64_t RHSVal = RHSi->getValue();
149
150 if (canFitInBitfield(MHSVal, Size) && canFitInBitfield(RHSVal, Size)) {
151 BitsInit *Ret = new BitsInit(Size);
152
153 for (unsigned i = 0; i != Size; ++i)
154 Ret->setBit(i, new TernOpInit(TernOpInit::IF, LHS,
155 new IntInit((MHSVal & (1LL << i)) ? 1 : 0),
156 new IntInit((RHSVal & (1LL << i)) ? 1 : 0),
157 VI->getType()));
158
159 return Ret;
160 }
161 } else {
162 BitsInit *MHSbs = dynamic_cast<BitsInit*>(MHS);
163 BitsInit *RHSbs = dynamic_cast<BitsInit*>(RHS);
164
165 if (MHSbs && RHSbs) {
166 BitsInit *Ret = new BitsInit(Size);
167
168 for (unsigned i = 0; i != Size; ++i)
169 Ret->setBit(i, new TernOpInit(TernOpInit::IF, LHS,
170 MHSbs->getBit(i),
171 RHSbs->getBit(i),
172 VI->getType()));
173
174 return Ret;
175 }
176 }
177 }
178 }
179
180 return 0;
181 }
182
convertValue(BitInit * BI)183 Init *IntRecTy::convertValue(BitInit *BI) {
184 return new IntInit(BI->getValue());
185 }
186
convertValue(BitsInit * BI)187 Init *IntRecTy::convertValue(BitsInit *BI) {
188 int64_t Result = 0;
189 for (unsigned i = 0, e = BI->getNumBits(); i != e; ++i)
190 if (BitInit *Bit = dynamic_cast<BitInit*>(BI->getBit(i))) {
191 Result |= Bit->getValue() << i;
192 } else {
193 return 0;
194 }
195 return new IntInit(Result);
196 }
197
convertValue(TypedInit * TI)198 Init *IntRecTy::convertValue(TypedInit *TI) {
199 if (TI->getType()->typeIsConvertibleTo(this))
200 return TI; // Accept variable if already of the right type!
201 return 0;
202 }
203
convertValue(UnOpInit * BO)204 Init *StringRecTy::convertValue(UnOpInit *BO) {
205 if (BO->getOpcode() == UnOpInit::CAST) {
206 Init *L = BO->getOperand()->convertInitializerTo(this);
207 if (L == 0) return 0;
208 if (L != BO->getOperand())
209 return new UnOpInit(UnOpInit::CAST, L, new StringRecTy);
210 return BO;
211 }
212
213 return convertValue((TypedInit*)BO);
214 }
215
convertValue(BinOpInit * BO)216 Init *StringRecTy::convertValue(BinOpInit *BO) {
217 if (BO->getOpcode() == BinOpInit::STRCONCAT) {
218 Init *L = BO->getLHS()->convertInitializerTo(this);
219 Init *R = BO->getRHS()->convertInitializerTo(this);
220 if (L == 0 || R == 0) return 0;
221 if (L != BO->getLHS() || R != BO->getRHS())
222 return new BinOpInit(BinOpInit::STRCONCAT, L, R, new StringRecTy);
223 return BO;
224 }
225
226 return convertValue((TypedInit*)BO);
227 }
228
229
convertValue(TypedInit * TI)230 Init *StringRecTy::convertValue(TypedInit *TI) {
231 if (dynamic_cast<StringRecTy*>(TI->getType()))
232 return TI; // Accept variable if already of the right type!
233 return 0;
234 }
235
getAsString() const236 std::string ListRecTy::getAsString() const {
237 return "list<" + Ty->getAsString() + ">";
238 }
239
convertValue(ListInit * LI)240 Init *ListRecTy::convertValue(ListInit *LI) {
241 std::vector<Init*> Elements;
242
243 // Verify that all of the elements of the list are subclasses of the
244 // appropriate class!
245 for (unsigned i = 0, e = LI->getSize(); i != e; ++i)
246 if (Init *CI = LI->getElement(i)->convertInitializerTo(Ty))
247 Elements.push_back(CI);
248 else
249 return 0;
250
251 ListRecTy *LType = dynamic_cast<ListRecTy*>(LI->getType());
252 if (LType == 0) {
253 return 0;
254 }
255
256 return new ListInit(Elements, this);
257 }
258
convertValue(TypedInit * TI)259 Init *ListRecTy::convertValue(TypedInit *TI) {
260 // Ensure that TI is compatible with our class.
261 if (ListRecTy *LRT = dynamic_cast<ListRecTy*>(TI->getType()))
262 if (LRT->getElementType()->typeIsConvertibleTo(getElementType()))
263 return TI;
264 return 0;
265 }
266
convertValue(TypedInit * TI)267 Init *CodeRecTy::convertValue(TypedInit *TI) {
268 if (TI->getType()->typeIsConvertibleTo(this))
269 return TI;
270 return 0;
271 }
272
convertValue(TypedInit * TI)273 Init *DagRecTy::convertValue(TypedInit *TI) {
274 if (TI->getType()->typeIsConvertibleTo(this))
275 return TI;
276 return 0;
277 }
278
convertValue(UnOpInit * BO)279 Init *DagRecTy::convertValue(UnOpInit *BO) {
280 if (BO->getOpcode() == UnOpInit::CAST) {
281 Init *L = BO->getOperand()->convertInitializerTo(this);
282 if (L == 0) return 0;
283 if (L != BO->getOperand())
284 return new UnOpInit(UnOpInit::CAST, L, new DagRecTy);
285 return BO;
286 }
287 return 0;
288 }
289
convertValue(BinOpInit * BO)290 Init *DagRecTy::convertValue(BinOpInit *BO) {
291 if (BO->getOpcode() == BinOpInit::CONCAT) {
292 Init *L = BO->getLHS()->convertInitializerTo(this);
293 Init *R = BO->getRHS()->convertInitializerTo(this);
294 if (L == 0 || R == 0) return 0;
295 if (L != BO->getLHS() || R != BO->getRHS())
296 return new BinOpInit(BinOpInit::CONCAT, L, R, new DagRecTy);
297 return BO;
298 }
299 return 0;
300 }
301
get(Record * R)302 RecordRecTy *RecordRecTy::get(Record *R) {
303 return &dynamic_cast<RecordRecTy&>(*R->getDefInit()->getType());
304 }
305
getAsString() const306 std::string RecordRecTy::getAsString() const {
307 return Rec->getName();
308 }
309
convertValue(DefInit * DI)310 Init *RecordRecTy::convertValue(DefInit *DI) {
311 // Ensure that DI is a subclass of Rec.
312 if (!DI->getDef()->isSubClassOf(Rec))
313 return 0;
314 return DI;
315 }
316
convertValue(TypedInit * TI)317 Init *RecordRecTy::convertValue(TypedInit *TI) {
318 // Ensure that TI is compatible with Rec.
319 if (RecordRecTy *RRT = dynamic_cast<RecordRecTy*>(TI->getType()))
320 if (RRT->getRecord()->isSubClassOf(getRecord()) ||
321 RRT->getRecord() == getRecord())
322 return TI;
323 return 0;
324 }
325
baseClassOf(const RecordRecTy * RHS) const326 bool RecordRecTy::baseClassOf(const RecordRecTy *RHS) const {
327 if (Rec == RHS->getRecord() || RHS->getRecord()->isSubClassOf(Rec))
328 return true;
329
330 const std::vector<Record*> &SC = Rec->getSuperClasses();
331 for (unsigned i = 0, e = SC.size(); i != e; ++i)
332 if (RHS->getRecord()->isSubClassOf(SC[i]))
333 return true;
334
335 return false;
336 }
337
338
339 /// resolveTypes - Find a common type that T1 and T2 convert to.
340 /// Return 0 if no such type exists.
341 ///
resolveTypes(RecTy * T1,RecTy * T2)342 RecTy *llvm::resolveTypes(RecTy *T1, RecTy *T2) {
343 if (!T1->typeIsConvertibleTo(T2)) {
344 if (!T2->typeIsConvertibleTo(T1)) {
345 // If one is a Record type, check superclasses
346 RecordRecTy *RecTy1 = dynamic_cast<RecordRecTy*>(T1);
347 if (RecTy1) {
348 // See if T2 inherits from a type T1 also inherits from
349 const std::vector<Record *> &T1SuperClasses =
350 RecTy1->getRecord()->getSuperClasses();
351 for(std::vector<Record *>::const_iterator i = T1SuperClasses.begin(),
352 iend = T1SuperClasses.end();
353 i != iend;
354 ++i) {
355 RecordRecTy *SuperRecTy1 = RecordRecTy::get(*i);
356 RecTy *NewType1 = resolveTypes(SuperRecTy1, T2);
357 if (NewType1 != 0) {
358 if (NewType1 != SuperRecTy1) {
359 delete SuperRecTy1;
360 }
361 return NewType1;
362 }
363 }
364 }
365 RecordRecTy *RecTy2 = dynamic_cast<RecordRecTy*>(T2);
366 if (RecTy2) {
367 // See if T1 inherits from a type T2 also inherits from
368 const std::vector<Record *> &T2SuperClasses =
369 RecTy2->getRecord()->getSuperClasses();
370 for (std::vector<Record *>::const_iterator i = T2SuperClasses.begin(),
371 iend = T2SuperClasses.end();
372 i != iend;
373 ++i) {
374 RecordRecTy *SuperRecTy2 = RecordRecTy::get(*i);
375 RecTy *NewType2 = resolveTypes(T1, SuperRecTy2);
376 if (NewType2 != 0) {
377 if (NewType2 != SuperRecTy2) {
378 delete SuperRecTy2;
379 }
380 return NewType2;
381 }
382 }
383 }
384 return 0;
385 }
386 return T2;
387 }
388 return T1;
389 }
390
391
392 //===----------------------------------------------------------------------===//
393 // Initializer implementations
394 //===----------------------------------------------------------------------===//
395
dump() const396 void Init::dump() const { return print(errs()); }
397
convertInitializerBitRange(const std::vector<unsigned> & Bits)398 Init *BitsInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) {
399 BitsInit *BI = new BitsInit(Bits.size());
400 for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
401 if (Bits[i] >= getNumBits()) {
402 delete BI;
403 return 0;
404 }
405 BI->setBit(i, getBit(Bits[i]));
406 }
407 return BI;
408 }
409
getAsString() const410 std::string BitsInit::getAsString() const {
411 std::string Result = "{ ";
412 for (unsigned i = 0, e = getNumBits(); i != e; ++i) {
413 if (i) Result += ", ";
414 if (Init *Bit = getBit(e-i-1))
415 Result += Bit->getAsString();
416 else
417 Result += "*";
418 }
419 return Result + " }";
420 }
421
422 // resolveReferences - If there are any field references that refer to fields
423 // that have been filled in, we can propagate the values now.
424 //
resolveReferences(Record & R,const RecordVal * RV)425 Init *BitsInit::resolveReferences(Record &R, const RecordVal *RV) {
426 bool Changed = false;
427 BitsInit *New = new BitsInit(getNumBits());
428
429 for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
430 Init *B;
431 Init *CurBit = getBit(i);
432
433 do {
434 B = CurBit;
435 CurBit = CurBit->resolveReferences(R, RV);
436 Changed |= B != CurBit;
437 } while (B != CurBit);
438 New->setBit(i, CurBit);
439 }
440
441 if (Changed)
442 return New;
443 delete New;
444 return this;
445 }
446
getAsString() const447 std::string IntInit::getAsString() const {
448 return itostr(Value);
449 }
450
convertInitializerBitRange(const std::vector<unsigned> & Bits)451 Init *IntInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) {
452 BitsInit *BI = new BitsInit(Bits.size());
453
454 for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
455 if (Bits[i] >= 64) {
456 delete BI;
457 return 0;
458 }
459 BI->setBit(i, new BitInit(Value & (INT64_C(1) << Bits[i])));
460 }
461 return BI;
462 }
463
convertInitListSlice(const std::vector<unsigned> & Elements)464 Init *ListInit::convertInitListSlice(const std::vector<unsigned> &Elements) {
465 std::vector<Init*> Vals;
466 for (unsigned i = 0, e = Elements.size(); i != e; ++i) {
467 if (Elements[i] >= getSize())
468 return 0;
469 Vals.push_back(getElement(Elements[i]));
470 }
471 return new ListInit(Vals, getType());
472 }
473
getElementAsRecord(unsigned i) const474 Record *ListInit::getElementAsRecord(unsigned i) const {
475 assert(i < Values.size() && "List element index out of range!");
476 DefInit *DI = dynamic_cast<DefInit*>(Values[i]);
477 if (DI == 0) throw "Expected record in list!";
478 return DI->getDef();
479 }
480
resolveReferences(Record & R,const RecordVal * RV)481 Init *ListInit::resolveReferences(Record &R, const RecordVal *RV) {
482 std::vector<Init*> Resolved;
483 Resolved.reserve(getSize());
484 bool Changed = false;
485
486 for (unsigned i = 0, e = getSize(); i != e; ++i) {
487 Init *E;
488 Init *CurElt = getElement(i);
489
490 do {
491 E = CurElt;
492 CurElt = CurElt->resolveReferences(R, RV);
493 Changed |= E != CurElt;
494 } while (E != CurElt);
495 Resolved.push_back(E);
496 }
497
498 if (Changed)
499 return new ListInit(Resolved, getType());
500 return this;
501 }
502
resolveListElementReference(Record & R,const RecordVal * IRV,unsigned Elt)503 Init *ListInit::resolveListElementReference(Record &R, const RecordVal *IRV,
504 unsigned Elt) {
505 if (Elt >= getSize())
506 return 0; // Out of range reference.
507 Init *E = getElement(Elt);
508 // If the element is set to some value, or if we are resolving a reference
509 // to a specific variable and that variable is explicitly unset, then
510 // replace the VarListElementInit with it.
511 if (IRV || !dynamic_cast<UnsetInit*>(E))
512 return E;
513 return 0;
514 }
515
getAsString() const516 std::string ListInit::getAsString() const {
517 std::string Result = "[";
518 for (unsigned i = 0, e = Values.size(); i != e; ++i) {
519 if (i) Result += ", ";
520 Result += Values[i]->getAsString();
521 }
522 return Result + "]";
523 }
524
resolveBitReference(Record & R,const RecordVal * IRV,unsigned Bit)525 Init *OpInit::resolveBitReference(Record &R, const RecordVal *IRV,
526 unsigned Bit) {
527 Init *Folded = Fold(&R, 0);
528
529 if (Folded != this) {
530 TypedInit *Typed = dynamic_cast<TypedInit *>(Folded);
531 if (Typed) {
532 return Typed->resolveBitReference(R, IRV, Bit);
533 }
534 }
535
536 return 0;
537 }
538
resolveListElementReference(Record & R,const RecordVal * IRV,unsigned Elt)539 Init *OpInit::resolveListElementReference(Record &R, const RecordVal *IRV,
540 unsigned Elt) {
541 Init *Folded = Fold(&R, 0);
542
543 if (Folded != this) {
544 TypedInit *Typed = dynamic_cast<TypedInit *>(Folded);
545 if (Typed) {
546 return Typed->resolveListElementReference(R, IRV, Elt);
547 }
548 }
549
550 return 0;
551 }
552
Fold(Record * CurRec,MultiClass * CurMultiClass)553 Init *UnOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) {
554 switch (getOpcode()) {
555 default: assert(0 && "Unknown unop");
556 case CAST: {
557 if (getType()->getAsString() == "string") {
558 StringInit *LHSs = dynamic_cast<StringInit*>(LHS);
559 if (LHSs) {
560 return LHSs;
561 }
562
563 DefInit *LHSd = dynamic_cast<DefInit*>(LHS);
564 if (LHSd) {
565 return new StringInit(LHSd->getDef()->getName());
566 }
567 } else {
568 StringInit *LHSs = dynamic_cast<StringInit*>(LHS);
569 if (LHSs) {
570 std::string Name = LHSs->getValue();
571
572 // From TGParser::ParseIDValue
573 if (CurRec) {
574 if (const RecordVal *RV = CurRec->getValue(Name)) {
575 if (RV->getType() != getType())
576 throw "type mismatch in cast";
577 return new VarInit(Name, RV->getType());
578 }
579
580 std::string TemplateArgName = CurRec->getName()+":"+Name;
581 if (CurRec->isTemplateArg(TemplateArgName)) {
582 const RecordVal *RV = CurRec->getValue(TemplateArgName);
583 assert(RV && "Template arg doesn't exist??");
584
585 if (RV->getType() != getType())
586 throw "type mismatch in cast";
587
588 return new VarInit(TemplateArgName, RV->getType());
589 }
590 }
591
592 if (CurMultiClass) {
593 std::string MCName = CurMultiClass->Rec.getName()+"::"+Name;
594 if (CurMultiClass->Rec.isTemplateArg(MCName)) {
595 const RecordVal *RV = CurMultiClass->Rec.getValue(MCName);
596 assert(RV && "Template arg doesn't exist??");
597
598 if (RV->getType() != getType())
599 throw "type mismatch in cast";
600
601 return new VarInit(MCName, RV->getType());
602 }
603 }
604
605 if (Record *D = (CurRec->getRecords()).getDef(Name))
606 return DefInit::get(D);
607
608 throw TGError(CurRec->getLoc(), "Undefined reference:'" + Name + "'\n");
609 }
610 }
611 break;
612 }
613 case HEAD: {
614 ListInit *LHSl = dynamic_cast<ListInit*>(LHS);
615 if (LHSl) {
616 if (LHSl->getSize() == 0) {
617 assert(0 && "Empty list in car");
618 return 0;
619 }
620 return LHSl->getElement(0);
621 }
622 break;
623 }
624 case TAIL: {
625 ListInit *LHSl = dynamic_cast<ListInit*>(LHS);
626 if (LHSl) {
627 if (LHSl->getSize() == 0) {
628 assert(0 && "Empty list in cdr");
629 return 0;
630 }
631 ListInit *Result = new ListInit(LHSl->begin()+1, LHSl->end(),
632 LHSl->getType());
633 return Result;
634 }
635 break;
636 }
637 case EMPTY: {
638 ListInit *LHSl = dynamic_cast<ListInit*>(LHS);
639 if (LHSl) {
640 if (LHSl->getSize() == 0) {
641 return new IntInit(1);
642 } else {
643 return new IntInit(0);
644 }
645 }
646 StringInit *LHSs = dynamic_cast<StringInit*>(LHS);
647 if (LHSs) {
648 if (LHSs->getValue().empty()) {
649 return new IntInit(1);
650 } else {
651 return new IntInit(0);
652 }
653 }
654
655 break;
656 }
657 }
658 return this;
659 }
660
resolveReferences(Record & R,const RecordVal * RV)661 Init *UnOpInit::resolveReferences(Record &R, const RecordVal *RV) {
662 Init *lhs = LHS->resolveReferences(R, RV);
663
664 if (LHS != lhs)
665 return (new UnOpInit(getOpcode(), lhs, getType()))->Fold(&R, 0);
666 return Fold(&R, 0);
667 }
668
getAsString() const669 std::string UnOpInit::getAsString() const {
670 std::string Result;
671 switch (Opc) {
672 case CAST: Result = "!cast<" + getType()->getAsString() + ">"; break;
673 case HEAD: Result = "!head"; break;
674 case TAIL: Result = "!tail"; break;
675 case EMPTY: Result = "!empty"; break;
676 }
677 return Result + "(" + LHS->getAsString() + ")";
678 }
679
Fold(Record * CurRec,MultiClass * CurMultiClass)680 Init *BinOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) {
681 switch (getOpcode()) {
682 default: assert(0 && "Unknown binop");
683 case CONCAT: {
684 DagInit *LHSs = dynamic_cast<DagInit*>(LHS);
685 DagInit *RHSs = dynamic_cast<DagInit*>(RHS);
686 if (LHSs && RHSs) {
687 DefInit *LOp = dynamic_cast<DefInit*>(LHSs->getOperator());
688 DefInit *ROp = dynamic_cast<DefInit*>(RHSs->getOperator());
689 if (LOp == 0 || ROp == 0 || LOp->getDef() != ROp->getDef())
690 throw "Concated Dag operators do not match!";
691 std::vector<Init*> Args;
692 std::vector<std::string> ArgNames;
693 for (unsigned i = 0, e = LHSs->getNumArgs(); i != e; ++i) {
694 Args.push_back(LHSs->getArg(i));
695 ArgNames.push_back(LHSs->getArgName(i));
696 }
697 for (unsigned i = 0, e = RHSs->getNumArgs(); i != e; ++i) {
698 Args.push_back(RHSs->getArg(i));
699 ArgNames.push_back(RHSs->getArgName(i));
700 }
701 return new DagInit(LHSs->getOperator(), "", Args, ArgNames);
702 }
703 break;
704 }
705 case STRCONCAT: {
706 StringInit *LHSs = dynamic_cast<StringInit*>(LHS);
707 StringInit *RHSs = dynamic_cast<StringInit*>(RHS);
708 if (LHSs && RHSs)
709 return new StringInit(LHSs->getValue() + RHSs->getValue());
710 break;
711 }
712 case EQ: {
713 // try to fold eq comparison for 'bit' and 'int', otherwise fallback
714 // to string objects.
715 IntInit* L =
716 dynamic_cast<IntInit*>(LHS->convertInitializerTo(IntRecTy::get()));
717 IntInit* R =
718 dynamic_cast<IntInit*>(RHS->convertInitializerTo(IntRecTy::get()));
719
720 if (L && R)
721 return new IntInit(L->getValue() == R->getValue());
722
723 StringInit *LHSs = dynamic_cast<StringInit*>(LHS);
724 StringInit *RHSs = dynamic_cast<StringInit*>(RHS);
725
726 // Make sure we've resolved
727 if (LHSs && RHSs)
728 return new IntInit(LHSs->getValue() == RHSs->getValue());
729
730 break;
731 }
732 case SHL:
733 case SRA:
734 case SRL: {
735 IntInit *LHSi = dynamic_cast<IntInit*>(LHS);
736 IntInit *RHSi = dynamic_cast<IntInit*>(RHS);
737 if (LHSi && RHSi) {
738 int64_t LHSv = LHSi->getValue(), RHSv = RHSi->getValue();
739 int64_t Result;
740 switch (getOpcode()) {
741 default: assert(0 && "Bad opcode!");
742 case SHL: Result = LHSv << RHSv; break;
743 case SRA: Result = LHSv >> RHSv; break;
744 case SRL: Result = (uint64_t)LHSv >> (uint64_t)RHSv; break;
745 }
746 return new IntInit(Result);
747 }
748 break;
749 }
750 }
751 return this;
752 }
753
resolveReferences(Record & R,const RecordVal * RV)754 Init *BinOpInit::resolveReferences(Record &R, const RecordVal *RV) {
755 Init *lhs = LHS->resolveReferences(R, RV);
756 Init *rhs = RHS->resolveReferences(R, RV);
757
758 if (LHS != lhs || RHS != rhs)
759 return (new BinOpInit(getOpcode(), lhs, rhs, getType()))->Fold(&R, 0);
760 return Fold(&R, 0);
761 }
762
getAsString() const763 std::string BinOpInit::getAsString() const {
764 std::string Result;
765 switch (Opc) {
766 case CONCAT: Result = "!con"; break;
767 case SHL: Result = "!shl"; break;
768 case SRA: Result = "!sra"; break;
769 case SRL: Result = "!srl"; break;
770 case EQ: Result = "!eq"; break;
771 case STRCONCAT: Result = "!strconcat"; break;
772 }
773 return Result + "(" + LHS->getAsString() + ", " + RHS->getAsString() + ")";
774 }
775
776 static Init *ForeachHelper(Init *LHS, Init *MHS, Init *RHS, RecTy *Type,
777 Record *CurRec, MultiClass *CurMultiClass);
778
EvaluateOperation(OpInit * RHSo,Init * LHS,Init * Arg,RecTy * Type,Record * CurRec,MultiClass * CurMultiClass)779 static Init *EvaluateOperation(OpInit *RHSo, Init *LHS, Init *Arg,
780 RecTy *Type, Record *CurRec,
781 MultiClass *CurMultiClass) {
782 std::vector<Init *> NewOperands;
783
784 TypedInit *TArg = dynamic_cast<TypedInit*>(Arg);
785
786 // If this is a dag, recurse
787 if (TArg && TArg->getType()->getAsString() == "dag") {
788 Init *Result = ForeachHelper(LHS, Arg, RHSo, Type,
789 CurRec, CurMultiClass);
790 if (Result != 0) {
791 return Result;
792 } else {
793 return 0;
794 }
795 }
796
797 for (int i = 0; i < RHSo->getNumOperands(); ++i) {
798 OpInit *RHSoo = dynamic_cast<OpInit*>(RHSo->getOperand(i));
799
800 if (RHSoo) {
801 Init *Result = EvaluateOperation(RHSoo, LHS, Arg,
802 Type, CurRec, CurMultiClass);
803 if (Result != 0) {
804 NewOperands.push_back(Result);
805 } else {
806 NewOperands.push_back(Arg);
807 }
808 } else if (LHS->getAsString() == RHSo->getOperand(i)->getAsString()) {
809 NewOperands.push_back(Arg);
810 } else {
811 NewOperands.push_back(RHSo->getOperand(i));
812 }
813 }
814
815 // Now run the operator and use its result as the new leaf
816 OpInit *NewOp = RHSo->clone(NewOperands);
817 Init *NewVal = NewOp->Fold(CurRec, CurMultiClass);
818 if (NewVal != NewOp) {
819 delete NewOp;
820 return NewVal;
821 }
822 return 0;
823 }
824
ForeachHelper(Init * LHS,Init * MHS,Init * RHS,RecTy * Type,Record * CurRec,MultiClass * CurMultiClass)825 static Init *ForeachHelper(Init *LHS, Init *MHS, Init *RHS, RecTy *Type,
826 Record *CurRec, MultiClass *CurMultiClass) {
827 DagInit *MHSd = dynamic_cast<DagInit*>(MHS);
828 ListInit *MHSl = dynamic_cast<ListInit*>(MHS);
829
830 DagRecTy *DagType = dynamic_cast<DagRecTy*>(Type);
831 ListRecTy *ListType = dynamic_cast<ListRecTy*>(Type);
832
833 OpInit *RHSo = dynamic_cast<OpInit*>(RHS);
834
835 if (!RHSo) {
836 throw TGError(CurRec->getLoc(), "!foreach requires an operator\n");
837 }
838
839 TypedInit *LHSt = dynamic_cast<TypedInit*>(LHS);
840
841 if (!LHSt) {
842 throw TGError(CurRec->getLoc(), "!foreach requires typed variable\n");
843 }
844
845 if ((MHSd && DagType) || (MHSl && ListType)) {
846 if (MHSd) {
847 Init *Val = MHSd->getOperator();
848 Init *Result = EvaluateOperation(RHSo, LHS, Val,
849 Type, CurRec, CurMultiClass);
850 if (Result != 0) {
851 Val = Result;
852 }
853
854 std::vector<std::pair<Init *, std::string> > args;
855 for (unsigned int i = 0; i < MHSd->getNumArgs(); ++i) {
856 Init *Arg;
857 std::string ArgName;
858 Arg = MHSd->getArg(i);
859 ArgName = MHSd->getArgName(i);
860
861 // Process args
862 Init *Result = EvaluateOperation(RHSo, LHS, Arg, Type,
863 CurRec, CurMultiClass);
864 if (Result != 0) {
865 Arg = Result;
866 }
867
868 // TODO: Process arg names
869 args.push_back(std::make_pair(Arg, ArgName));
870 }
871
872 return new DagInit(Val, "", args);
873 }
874 if (MHSl) {
875 std::vector<Init *> NewOperands;
876 std::vector<Init *> NewList(MHSl->begin(), MHSl->end());
877
878 for (ListInit::iterator li = NewList.begin(),
879 liend = NewList.end();
880 li != liend;
881 ++li) {
882 Init *Item = *li;
883 NewOperands.clear();
884 for(int i = 0; i < RHSo->getNumOperands(); ++i) {
885 // First, replace the foreach variable with the list item
886 if (LHS->getAsString() == RHSo->getOperand(i)->getAsString()) {
887 NewOperands.push_back(Item);
888 } else {
889 NewOperands.push_back(RHSo->getOperand(i));
890 }
891 }
892
893 // Now run the operator and use its result as the new list item
894 OpInit *NewOp = RHSo->clone(NewOperands);
895 Init *NewItem = NewOp->Fold(CurRec, CurMultiClass);
896 if (NewItem != NewOp) {
897 *li = NewItem;
898 delete NewOp;
899 }
900 }
901 return new ListInit(NewList, MHSl->getType());
902 }
903 }
904 return 0;
905 }
906
Fold(Record * CurRec,MultiClass * CurMultiClass)907 Init *TernOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) {
908 switch (getOpcode()) {
909 default: assert(0 && "Unknown binop");
910 case SUBST: {
911 DefInit *LHSd = dynamic_cast<DefInit*>(LHS);
912 VarInit *LHSv = dynamic_cast<VarInit*>(LHS);
913 StringInit *LHSs = dynamic_cast<StringInit*>(LHS);
914
915 DefInit *MHSd = dynamic_cast<DefInit*>(MHS);
916 VarInit *MHSv = dynamic_cast<VarInit*>(MHS);
917 StringInit *MHSs = dynamic_cast<StringInit*>(MHS);
918
919 DefInit *RHSd = dynamic_cast<DefInit*>(RHS);
920 VarInit *RHSv = dynamic_cast<VarInit*>(RHS);
921 StringInit *RHSs = dynamic_cast<StringInit*>(RHS);
922
923 if ((LHSd && MHSd && RHSd)
924 || (LHSv && MHSv && RHSv)
925 || (LHSs && MHSs && RHSs)) {
926 if (RHSd) {
927 Record *Val = RHSd->getDef();
928 if (LHSd->getAsString() == RHSd->getAsString()) {
929 Val = MHSd->getDef();
930 }
931 return DefInit::get(Val);
932 }
933 if (RHSv) {
934 std::string Val = RHSv->getName();
935 if (LHSv->getAsString() == RHSv->getAsString()) {
936 Val = MHSv->getName();
937 }
938 return new VarInit(Val, getType());
939 }
940 if (RHSs) {
941 std::string Val = RHSs->getValue();
942
943 std::string::size_type found;
944 std::string::size_type idx = 0;
945 do {
946 found = Val.find(LHSs->getValue(), idx);
947 if (found != std::string::npos) {
948 Val.replace(found, LHSs->getValue().size(), MHSs->getValue());
949 }
950 idx = found + MHSs->getValue().size();
951 } while (found != std::string::npos);
952
953 return new StringInit(Val);
954 }
955 }
956 break;
957 }
958
959 case FOREACH: {
960 Init *Result = ForeachHelper(LHS, MHS, RHS, getType(),
961 CurRec, CurMultiClass);
962 if (Result != 0) {
963 return Result;
964 }
965 break;
966 }
967
968 case IF: {
969 IntInit *LHSi = dynamic_cast<IntInit*>(LHS);
970 if (Init *I = LHS->convertInitializerTo(IntRecTy::get()))
971 LHSi = dynamic_cast<IntInit*>(I);
972 if (LHSi) {
973 if (LHSi->getValue()) {
974 return MHS;
975 } else {
976 return RHS;
977 }
978 }
979 break;
980 }
981 }
982
983 return this;
984 }
985
resolveReferences(Record & R,const RecordVal * RV)986 Init *TernOpInit::resolveReferences(Record &R, const RecordVal *RV) {
987 Init *lhs = LHS->resolveReferences(R, RV);
988
989 if (Opc == IF && lhs != LHS) {
990 IntInit *Value = dynamic_cast<IntInit*>(lhs);
991 if (Init *I = lhs->convertInitializerTo(IntRecTy::get()))
992 Value = dynamic_cast<IntInit*>(I);
993 if (Value != 0) {
994 // Short-circuit
995 if (Value->getValue()) {
996 Init *mhs = MHS->resolveReferences(R, RV);
997 return (new TernOpInit(getOpcode(), lhs, mhs,
998 RHS, getType()))->Fold(&R, 0);
999 } else {
1000 Init *rhs = RHS->resolveReferences(R, RV);
1001 return (new TernOpInit(getOpcode(), lhs, MHS,
1002 rhs, getType()))->Fold(&R, 0);
1003 }
1004 }
1005 }
1006
1007 Init *mhs = MHS->resolveReferences(R, RV);
1008 Init *rhs = RHS->resolveReferences(R, RV);
1009
1010 if (LHS != lhs || MHS != mhs || RHS != rhs)
1011 return (new TernOpInit(getOpcode(), lhs, mhs, rhs, getType()))->Fold(&R, 0);
1012 return Fold(&R, 0);
1013 }
1014
getAsString() const1015 std::string TernOpInit::getAsString() const {
1016 std::string Result;
1017 switch (Opc) {
1018 case SUBST: Result = "!subst"; break;
1019 case FOREACH: Result = "!foreach"; break;
1020 case IF: Result = "!if"; break;
1021 }
1022 return Result + "(" + LHS->getAsString() + ", " + MHS->getAsString() + ", "
1023 + RHS->getAsString() + ")";
1024 }
1025
getFieldType(const std::string & FieldName) const1026 RecTy *TypedInit::getFieldType(const std::string &FieldName) const {
1027 RecordRecTy *RecordType = dynamic_cast<RecordRecTy *>(getType());
1028 if (RecordType) {
1029 RecordVal *Field = RecordType->getRecord()->getValue(FieldName);
1030 if (Field) {
1031 return Field->getType();
1032 }
1033 }
1034 return 0;
1035 }
1036
convertInitializerBitRange(const std::vector<unsigned> & Bits)1037 Init *TypedInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) {
1038 BitsRecTy *T = dynamic_cast<BitsRecTy*>(getType());
1039 if (T == 0) return 0; // Cannot subscript a non-bits variable.
1040 unsigned NumBits = T->getNumBits();
1041
1042 BitsInit *BI = new BitsInit(Bits.size());
1043 for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
1044 if (Bits[i] >= NumBits) {
1045 delete BI;
1046 return 0;
1047 }
1048 BI->setBit(i, new VarBitInit(this, Bits[i]));
1049 }
1050 return BI;
1051 }
1052
convertInitListSlice(const std::vector<unsigned> & Elements)1053 Init *TypedInit::convertInitListSlice(const std::vector<unsigned> &Elements) {
1054 ListRecTy *T = dynamic_cast<ListRecTy*>(getType());
1055 if (T == 0) return 0; // Cannot subscript a non-list variable.
1056
1057 if (Elements.size() == 1)
1058 return new VarListElementInit(this, Elements[0]);
1059
1060 std::vector<Init*> ListInits;
1061 ListInits.reserve(Elements.size());
1062 for (unsigned i = 0, e = Elements.size(); i != e; ++i)
1063 ListInits.push_back(new VarListElementInit(this, Elements[i]));
1064 return new ListInit(ListInits, T);
1065 }
1066
1067
resolveBitReference(Record & R,const RecordVal * IRV,unsigned Bit)1068 Init *VarInit::resolveBitReference(Record &R, const RecordVal *IRV,
1069 unsigned Bit) {
1070 if (R.isTemplateArg(getName())) return 0;
1071 if (IRV && IRV->getName() != getName()) return 0;
1072
1073 RecordVal *RV = R.getValue(getName());
1074 assert(RV && "Reference to a non-existent variable?");
1075 assert(dynamic_cast<BitsInit*>(RV->getValue()));
1076 BitsInit *BI = (BitsInit*)RV->getValue();
1077
1078 assert(Bit < BI->getNumBits() && "Bit reference out of range!");
1079 Init *B = BI->getBit(Bit);
1080
1081 // If the bit is set to some value, or if we are resolving a reference to a
1082 // specific variable and that variable is explicitly unset, then replace the
1083 // VarBitInit with it.
1084 if (IRV || !dynamic_cast<UnsetInit*>(B))
1085 return B;
1086 return 0;
1087 }
1088
resolveListElementReference(Record & R,const RecordVal * IRV,unsigned Elt)1089 Init *VarInit::resolveListElementReference(Record &R, const RecordVal *IRV,
1090 unsigned Elt) {
1091 if (R.isTemplateArg(getName())) return 0;
1092 if (IRV && IRV->getName() != getName()) return 0;
1093
1094 RecordVal *RV = R.getValue(getName());
1095 assert(RV && "Reference to a non-existent variable?");
1096 ListInit *LI = dynamic_cast<ListInit*>(RV->getValue());
1097 if (!LI) {
1098 VarInit *VI = dynamic_cast<VarInit*>(RV->getValue());
1099 assert(VI && "Invalid list element!");
1100 return new VarListElementInit(VI, Elt);
1101 }
1102
1103 if (Elt >= LI->getSize())
1104 return 0; // Out of range reference.
1105 Init *E = LI->getElement(Elt);
1106 // If the element is set to some value, or if we are resolving a reference
1107 // to a specific variable and that variable is explicitly unset, then
1108 // replace the VarListElementInit with it.
1109 if (IRV || !dynamic_cast<UnsetInit*>(E))
1110 return E;
1111 return 0;
1112 }
1113
1114
getFieldType(const std::string & FieldName) const1115 RecTy *VarInit::getFieldType(const std::string &FieldName) const {
1116 if (RecordRecTy *RTy = dynamic_cast<RecordRecTy*>(getType()))
1117 if (const RecordVal *RV = RTy->getRecord()->getValue(FieldName))
1118 return RV->getType();
1119 return 0;
1120 }
1121
getFieldInit(Record & R,const RecordVal * RV,const std::string & FieldName) const1122 Init *VarInit::getFieldInit(Record &R, const RecordVal *RV,
1123 const std::string &FieldName) const {
1124 if (dynamic_cast<RecordRecTy*>(getType()))
1125 if (const RecordVal *Val = R.getValue(VarName)) {
1126 if (RV != Val && (RV || dynamic_cast<UnsetInit*>(Val->getValue())))
1127 return 0;
1128 Init *TheInit = Val->getValue();
1129 assert(TheInit != this && "Infinite loop detected!");
1130 if (Init *I = TheInit->getFieldInit(R, RV, FieldName))
1131 return I;
1132 else
1133 return 0;
1134 }
1135 return 0;
1136 }
1137
1138 /// resolveReferences - This method is used by classes that refer to other
1139 /// variables which may not be defined at the time the expression is formed.
1140 /// If a value is set for the variable later, this method will be called on
1141 /// users of the value to allow the value to propagate out.
1142 ///
resolveReferences(Record & R,const RecordVal * RV)1143 Init *VarInit::resolveReferences(Record &R, const RecordVal *RV) {
1144 if (RecordVal *Val = R.getValue(VarName))
1145 if (RV == Val || (RV == 0 && !dynamic_cast<UnsetInit*>(Val->getValue())))
1146 return Val->getValue();
1147 return this;
1148 }
1149
getAsString() const1150 std::string VarBitInit::getAsString() const {
1151 return TI->getAsString() + "{" + utostr(Bit) + "}";
1152 }
1153
resolveReferences(Record & R,const RecordVal * RV)1154 Init *VarBitInit::resolveReferences(Record &R, const RecordVal *RV) {
1155 if (Init *I = getVariable()->resolveBitReference(R, RV, getBitNum()))
1156 return I;
1157 return this;
1158 }
1159
getAsString() const1160 std::string VarListElementInit::getAsString() const {
1161 return TI->getAsString() + "[" + utostr(Element) + "]";
1162 }
1163
resolveReferences(Record & R,const RecordVal * RV)1164 Init *VarListElementInit::resolveReferences(Record &R, const RecordVal *RV) {
1165 if (Init *I = getVariable()->resolveListElementReference(R, RV,
1166 getElementNum()))
1167 return I;
1168 return this;
1169 }
1170
resolveBitReference(Record & R,const RecordVal * RV,unsigned Bit)1171 Init *VarListElementInit::resolveBitReference(Record &R, const RecordVal *RV,
1172 unsigned Bit) {
1173 // FIXME: This should be implemented, to support references like:
1174 // bit B = AA[0]{1};
1175 return 0;
1176 }
1177
1178 Init *VarListElementInit::
resolveListElementReference(Record & R,const RecordVal * RV,unsigned Elt)1179 resolveListElementReference(Record &R, const RecordVal *RV, unsigned Elt) {
1180 // FIXME: This should be implemented, to support references like:
1181 // int B = AA[0][1];
1182 return 0;
1183 }
1184
get(Record * R)1185 DefInit *DefInit::get(Record *R) {
1186 return R->getDefInit();
1187 }
1188
getFieldType(const std::string & FieldName) const1189 RecTy *DefInit::getFieldType(const std::string &FieldName) const {
1190 if (const RecordVal *RV = Def->getValue(FieldName))
1191 return RV->getType();
1192 return 0;
1193 }
1194
getFieldInit(Record & R,const RecordVal * RV,const std::string & FieldName) const1195 Init *DefInit::getFieldInit(Record &R, const RecordVal *RV,
1196 const std::string &FieldName) const {
1197 return Def->getValue(FieldName)->getValue();
1198 }
1199
1200
getAsString() const1201 std::string DefInit::getAsString() const {
1202 return Def->getName();
1203 }
1204
resolveBitReference(Record & R,const RecordVal * RV,unsigned Bit)1205 Init *FieldInit::resolveBitReference(Record &R, const RecordVal *RV,
1206 unsigned Bit) {
1207 if (Init *BitsVal = Rec->getFieldInit(R, RV, FieldName))
1208 if (BitsInit *BI = dynamic_cast<BitsInit*>(BitsVal)) {
1209 assert(Bit < BI->getNumBits() && "Bit reference out of range!");
1210 Init *B = BI->getBit(Bit);
1211
1212 if (dynamic_cast<BitInit*>(B)) // If the bit is set.
1213 return B; // Replace the VarBitInit with it.
1214 }
1215 return 0;
1216 }
1217
resolveListElementReference(Record & R,const RecordVal * RV,unsigned Elt)1218 Init *FieldInit::resolveListElementReference(Record &R, const RecordVal *RV,
1219 unsigned Elt) {
1220 if (Init *ListVal = Rec->getFieldInit(R, RV, FieldName))
1221 if (ListInit *LI = dynamic_cast<ListInit*>(ListVal)) {
1222 if (Elt >= LI->getSize()) return 0;
1223 Init *E = LI->getElement(Elt);
1224
1225 // If the element is set to some value, or if we are resolving a
1226 // reference to a specific variable and that variable is explicitly
1227 // unset, then replace the VarListElementInit with it.
1228 if (RV || !dynamic_cast<UnsetInit*>(E))
1229 return E;
1230 }
1231 return 0;
1232 }
1233
resolveReferences(Record & R,const RecordVal * RV)1234 Init *FieldInit::resolveReferences(Record &R, const RecordVal *RV) {
1235 Init *NewRec = RV ? Rec->resolveReferences(R, RV) : Rec;
1236
1237 Init *BitsVal = NewRec->getFieldInit(R, RV, FieldName);
1238 if (BitsVal) {
1239 Init *BVR = BitsVal->resolveReferences(R, RV);
1240 return BVR->isComplete() ? BVR : this;
1241 }
1242
1243 if (NewRec != Rec) {
1244 return new FieldInit(NewRec, FieldName);
1245 }
1246 return this;
1247 }
1248
resolveReferences(Record & R,const RecordVal * RV)1249 Init *DagInit::resolveReferences(Record &R, const RecordVal *RV) {
1250 std::vector<Init*> NewArgs;
1251 for (unsigned i = 0, e = Args.size(); i != e; ++i)
1252 NewArgs.push_back(Args[i]->resolveReferences(R, RV));
1253
1254 Init *Op = Val->resolveReferences(R, RV);
1255
1256 if (Args != NewArgs || Op != Val)
1257 return new DagInit(Op, ValName, NewArgs, ArgNames);
1258
1259 return this;
1260 }
1261
1262
getAsString() const1263 std::string DagInit::getAsString() const {
1264 std::string Result = "(" + Val->getAsString();
1265 if (!ValName.empty())
1266 Result += ":" + ValName;
1267 if (Args.size()) {
1268 Result += " " + Args[0]->getAsString();
1269 if (!ArgNames[0].empty()) Result += ":$" + ArgNames[0];
1270 for (unsigned i = 1, e = Args.size(); i != e; ++i) {
1271 Result += ", " + Args[i]->getAsString();
1272 if (!ArgNames[i].empty()) Result += ":$" + ArgNames[i];
1273 }
1274 }
1275 return Result + ")";
1276 }
1277
1278
1279 //===----------------------------------------------------------------------===//
1280 // Other implementations
1281 //===----------------------------------------------------------------------===//
1282
RecordVal(const std::string & N,RecTy * T,unsigned P)1283 RecordVal::RecordVal(const std::string &N, RecTy *T, unsigned P)
1284 : Name(N), Ty(T), Prefix(P) {
1285 Value = Ty->convertValue(new UnsetInit());
1286 assert(Value && "Cannot create unset value for current type!");
1287 }
1288
dump() const1289 void RecordVal::dump() const { errs() << *this; }
1290
print(raw_ostream & OS,bool PrintSem) const1291 void RecordVal::print(raw_ostream &OS, bool PrintSem) const {
1292 if (getPrefix()) OS << "field ";
1293 OS << *getType() << " " << getName();
1294
1295 if (getValue())
1296 OS << " = " << *getValue();
1297
1298 if (PrintSem) OS << ";\n";
1299 }
1300
1301 unsigned Record::LastID = 0;
1302
getDefInit()1303 DefInit *Record::getDefInit() {
1304 if (!TheInit)
1305 TheInit = new DefInit(this, new RecordRecTy(this));
1306 return TheInit;
1307 }
1308
setName(const std::string & Name)1309 void Record::setName(const std::string &Name) {
1310 if (TrackedRecords.getDef(getName()) == this) {
1311 TrackedRecords.removeDef(getName());
1312 this->Name = Name;
1313 TrackedRecords.addDef(this);
1314 } else {
1315 TrackedRecords.removeClass(getName());
1316 this->Name = Name;
1317 TrackedRecords.addClass(this);
1318 }
1319 }
1320
1321 /// resolveReferencesTo - If anything in this record refers to RV, replace the
1322 /// reference to RV with the RHS of RV. If RV is null, we resolve all possible
1323 /// references.
resolveReferencesTo(const RecordVal * RV)1324 void Record::resolveReferencesTo(const RecordVal *RV) {
1325 for (unsigned i = 0, e = Values.size(); i != e; ++i) {
1326 if (Init *V = Values[i].getValue())
1327 Values[i].setValue(V->resolveReferences(*this, RV));
1328 }
1329 }
1330
dump() const1331 void Record::dump() const { errs() << *this; }
1332
operator <<(raw_ostream & OS,const Record & R)1333 raw_ostream &llvm::operator<<(raw_ostream &OS, const Record &R) {
1334 OS << R.getName();
1335
1336 const std::vector<std::string> &TArgs = R.getTemplateArgs();
1337 if (!TArgs.empty()) {
1338 OS << "<";
1339 for (unsigned i = 0, e = TArgs.size(); i != e; ++i) {
1340 if (i) OS << ", ";
1341 const RecordVal *RV = R.getValue(TArgs[i]);
1342 assert(RV && "Template argument record not found??");
1343 RV->print(OS, false);
1344 }
1345 OS << ">";
1346 }
1347
1348 OS << " {";
1349 const std::vector<Record*> &SC = R.getSuperClasses();
1350 if (!SC.empty()) {
1351 OS << "\t//";
1352 for (unsigned i = 0, e = SC.size(); i != e; ++i)
1353 OS << " " << SC[i]->getName();
1354 }
1355 OS << "\n";
1356
1357 const std::vector<RecordVal> &Vals = R.getValues();
1358 for (unsigned i = 0, e = Vals.size(); i != e; ++i)
1359 if (Vals[i].getPrefix() && !R.isTemplateArg(Vals[i].getName()))
1360 OS << Vals[i];
1361 for (unsigned i = 0, e = Vals.size(); i != e; ++i)
1362 if (!Vals[i].getPrefix() && !R.isTemplateArg(Vals[i].getName()))
1363 OS << Vals[i];
1364
1365 return OS << "}\n";
1366 }
1367
1368 /// getValueInit - Return the initializer for a value with the specified name,
1369 /// or throw an exception if the field does not exist.
1370 ///
getValueInit(StringRef FieldName) const1371 Init *Record::getValueInit(StringRef FieldName) const {
1372 const RecordVal *R = getValue(FieldName);
1373 if (R == 0 || R->getValue() == 0)
1374 throw "Record `" + getName() + "' does not have a field named `" +
1375 FieldName.str() + "'!\n";
1376 return R->getValue();
1377 }
1378
1379
1380 /// getValueAsString - This method looks up the specified field and returns its
1381 /// value as a string, throwing an exception if the field does not exist or if
1382 /// the value is not a string.
1383 ///
getValueAsString(StringRef FieldName) const1384 std::string Record::getValueAsString(StringRef FieldName) const {
1385 const RecordVal *R = getValue(FieldName);
1386 if (R == 0 || R->getValue() == 0)
1387 throw "Record `" + getName() + "' does not have a field named `" +
1388 FieldName.str() + "'!\n";
1389
1390 if (const StringInit *SI = dynamic_cast<const StringInit*>(R->getValue()))
1391 return SI->getValue();
1392 throw "Record `" + getName() + "', field `" + FieldName.str() +
1393 "' does not have a string initializer!";
1394 }
1395
1396 /// getValueAsBitsInit - This method looks up the specified field and returns
1397 /// its value as a BitsInit, throwing an exception if the field does not exist
1398 /// or if the value is not the right type.
1399 ///
getValueAsBitsInit(StringRef FieldName) const1400 BitsInit *Record::getValueAsBitsInit(StringRef FieldName) const {
1401 const RecordVal *R = getValue(FieldName);
1402 if (R == 0 || R->getValue() == 0)
1403 throw "Record `" + getName() + "' does not have a field named `" +
1404 FieldName.str() + "'!\n";
1405
1406 if (BitsInit *BI = dynamic_cast<BitsInit*>(R->getValue()))
1407 return BI;
1408 throw "Record `" + getName() + "', field `" + FieldName.str() +
1409 "' does not have a BitsInit initializer!";
1410 }
1411
1412 /// getValueAsListInit - This method looks up the specified field and returns
1413 /// its value as a ListInit, throwing an exception if the field does not exist
1414 /// or if the value is not the right type.
1415 ///
getValueAsListInit(StringRef FieldName) const1416 ListInit *Record::getValueAsListInit(StringRef FieldName) const {
1417 const RecordVal *R = getValue(FieldName);
1418 if (R == 0 || R->getValue() == 0)
1419 throw "Record `" + getName() + "' does not have a field named `" +
1420 FieldName.str() + "'!\n";
1421
1422 if (ListInit *LI = dynamic_cast<ListInit*>(R->getValue()))
1423 return LI;
1424 throw "Record `" + getName() + "', field `" + FieldName.str() +
1425 "' does not have a list initializer!";
1426 }
1427
1428 /// getValueAsListOfDefs - This method looks up the specified field and returns
1429 /// its value as a vector of records, throwing an exception if the field does
1430 /// not exist or if the value is not the right type.
1431 ///
1432 std::vector<Record*>
getValueAsListOfDefs(StringRef FieldName) const1433 Record::getValueAsListOfDefs(StringRef FieldName) const {
1434 ListInit *List = getValueAsListInit(FieldName);
1435 std::vector<Record*> Defs;
1436 for (unsigned i = 0; i < List->getSize(); i++) {
1437 if (DefInit *DI = dynamic_cast<DefInit*>(List->getElement(i))) {
1438 Defs.push_back(DI->getDef());
1439 } else {
1440 throw "Record `" + getName() + "', field `" + FieldName.str() +
1441 "' list is not entirely DefInit!";
1442 }
1443 }
1444 return Defs;
1445 }
1446
1447 /// getValueAsInt - This method looks up the specified field and returns its
1448 /// value as an int64_t, throwing an exception if the field does not exist or if
1449 /// the value is not the right type.
1450 ///
getValueAsInt(StringRef FieldName) const1451 int64_t Record::getValueAsInt(StringRef FieldName) const {
1452 const RecordVal *R = getValue(FieldName);
1453 if (R == 0 || R->getValue() == 0)
1454 throw "Record `" + getName() + "' does not have a field named `" +
1455 FieldName.str() + "'!\n";
1456
1457 if (IntInit *II = dynamic_cast<IntInit*>(R->getValue()))
1458 return II->getValue();
1459 throw "Record `" + getName() + "', field `" + FieldName.str() +
1460 "' does not have an int initializer!";
1461 }
1462
1463 /// getValueAsListOfInts - This method looks up the specified field and returns
1464 /// its value as a vector of integers, throwing an exception if the field does
1465 /// not exist or if the value is not the right type.
1466 ///
1467 std::vector<int64_t>
getValueAsListOfInts(StringRef FieldName) const1468 Record::getValueAsListOfInts(StringRef FieldName) const {
1469 ListInit *List = getValueAsListInit(FieldName);
1470 std::vector<int64_t> Ints;
1471 for (unsigned i = 0; i < List->getSize(); i++) {
1472 if (IntInit *II = dynamic_cast<IntInit*>(List->getElement(i))) {
1473 Ints.push_back(II->getValue());
1474 } else {
1475 throw "Record `" + getName() + "', field `" + FieldName.str() +
1476 "' does not have a list of ints initializer!";
1477 }
1478 }
1479 return Ints;
1480 }
1481
1482 /// getValueAsListOfStrings - This method looks up the specified field and
1483 /// returns its value as a vector of strings, throwing an exception if the
1484 /// field does not exist or if the value is not the right type.
1485 ///
1486 std::vector<std::string>
getValueAsListOfStrings(StringRef FieldName) const1487 Record::getValueAsListOfStrings(StringRef FieldName) const {
1488 ListInit *List = getValueAsListInit(FieldName);
1489 std::vector<std::string> Strings;
1490 for (unsigned i = 0; i < List->getSize(); i++) {
1491 if (StringInit *II = dynamic_cast<StringInit*>(List->getElement(i))) {
1492 Strings.push_back(II->getValue());
1493 } else {
1494 throw "Record `" + getName() + "', field `" + FieldName.str() +
1495 "' does not have a list of strings initializer!";
1496 }
1497 }
1498 return Strings;
1499 }
1500
1501 /// getValueAsDef - This method looks up the specified field and returns its
1502 /// value as a Record, throwing an exception if the field does not exist or if
1503 /// the value is not the right type.
1504 ///
getValueAsDef(StringRef FieldName) const1505 Record *Record::getValueAsDef(StringRef FieldName) const {
1506 const RecordVal *R = getValue(FieldName);
1507 if (R == 0 || R->getValue() == 0)
1508 throw "Record `" + getName() + "' does not have a field named `" +
1509 FieldName.str() + "'!\n";
1510
1511 if (DefInit *DI = dynamic_cast<DefInit*>(R->getValue()))
1512 return DI->getDef();
1513 throw "Record `" + getName() + "', field `" + FieldName.str() +
1514 "' does not have a def initializer!";
1515 }
1516
1517 /// getValueAsBit - This method looks up the specified field and returns its
1518 /// value as a bit, throwing an exception if the field does not exist or if
1519 /// the value is not the right type.
1520 ///
getValueAsBit(StringRef FieldName) const1521 bool Record::getValueAsBit(StringRef FieldName) const {
1522 const RecordVal *R = getValue(FieldName);
1523 if (R == 0 || R->getValue() == 0)
1524 throw "Record `" + getName() + "' does not have a field named `" +
1525 FieldName.str() + "'!\n";
1526
1527 if (BitInit *BI = dynamic_cast<BitInit*>(R->getValue()))
1528 return BI->getValue();
1529 throw "Record `" + getName() + "', field `" + FieldName.str() +
1530 "' does not have a bit initializer!";
1531 }
1532
1533 /// getValueAsDag - This method looks up the specified field and returns its
1534 /// value as an Dag, throwing an exception if the field does not exist or if
1535 /// the value is not the right type.
1536 ///
getValueAsDag(StringRef FieldName) const1537 DagInit *Record::getValueAsDag(StringRef FieldName) const {
1538 const RecordVal *R = getValue(FieldName);
1539 if (R == 0 || R->getValue() == 0)
1540 throw "Record `" + getName() + "' does not have a field named `" +
1541 FieldName.str() + "'!\n";
1542
1543 if (DagInit *DI = dynamic_cast<DagInit*>(R->getValue()))
1544 return DI;
1545 throw "Record `" + getName() + "', field `" + FieldName.str() +
1546 "' does not have a dag initializer!";
1547 }
1548
getValueAsCode(StringRef FieldName) const1549 std::string Record::getValueAsCode(StringRef FieldName) const {
1550 const RecordVal *R = getValue(FieldName);
1551 if (R == 0 || R->getValue() == 0)
1552 throw "Record `" + getName() + "' does not have a field named `" +
1553 FieldName.str() + "'!\n";
1554
1555 if (const CodeInit *CI = dynamic_cast<const CodeInit*>(R->getValue()))
1556 return CI->getValue();
1557 throw "Record `" + getName() + "', field `" + FieldName.str() +
1558 "' does not have a code initializer!";
1559 }
1560
1561
dump() const1562 void MultiClass::dump() const {
1563 errs() << "Record:\n";
1564 Rec.dump();
1565
1566 errs() << "Defs:\n";
1567 for (RecordVector::const_iterator r = DefPrototypes.begin(),
1568 rend = DefPrototypes.end();
1569 r != rend;
1570 ++r) {
1571 (*r)->dump();
1572 }
1573 }
1574
1575
dump() const1576 void RecordKeeper::dump() const { errs() << *this; }
1577
operator <<(raw_ostream & OS,const RecordKeeper & RK)1578 raw_ostream &llvm::operator<<(raw_ostream &OS, const RecordKeeper &RK) {
1579 OS << "------------- Classes -----------------\n";
1580 const std::map<std::string, Record*> &Classes = RK.getClasses();
1581 for (std::map<std::string, Record*>::const_iterator I = Classes.begin(),
1582 E = Classes.end(); I != E; ++I)
1583 OS << "class " << *I->second;
1584
1585 OS << "------------- Defs -----------------\n";
1586 const std::map<std::string, Record*> &Defs = RK.getDefs();
1587 for (std::map<std::string, Record*>::const_iterator I = Defs.begin(),
1588 E = Defs.end(); I != E; ++I)
1589 OS << "def " << *I->second;
1590 return OS;
1591 }
1592
1593
1594 /// getAllDerivedDefinitions - This method returns all concrete definitions
1595 /// that derive from the specified class name. If a class with the specified
1596 /// name does not exist, an error is printed and true is returned.
1597 std::vector<Record*>
getAllDerivedDefinitions(const std::string & ClassName) const1598 RecordKeeper::getAllDerivedDefinitions(const std::string &ClassName) const {
1599 Record *Class = getClass(ClassName);
1600 if (!Class)
1601 throw "ERROR: Couldn't find the `" + ClassName + "' class!\n";
1602
1603 std::vector<Record*> Defs;
1604 for (std::map<std::string, Record*>::const_iterator I = getDefs().begin(),
1605 E = getDefs().end(); I != E; ++I)
1606 if (I->second->isSubClassOf(Class))
1607 Defs.push_back(I->second);
1608
1609 return Defs;
1610 }
1611
1612