1 //===- Record.cpp - Record implementation ---------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Implement the tablegen record classes.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/TableGen/Record.h"
15 #include "llvm/ADT/DenseMap.h"
16 #include "llvm/ADT/FoldingSet.h"
17 #include "llvm/ADT/Hashing.h"
18 #include "llvm/ADT/STLExtras.h"
19 #include "llvm/ADT/SmallVector.h"
20 #include "llvm/ADT/StringExtras.h"
21 #include "llvm/ADT/StringMap.h"
22 #include "llvm/Support/DataTypes.h"
23 #include "llvm/Support/ErrorHandling.h"
24 #include "llvm/Support/Format.h"
25 #include "llvm/TableGen/Error.h"
29 //===----------------------------------------------------------------------===//
30 // std::string wrapper for DenseMap purposes
31 //===----------------------------------------------------------------------===//
35 /// TableGenStringKey - This is a wrapper for std::string suitable for
36 /// using as a key to a DenseMap. Because there isn't a particularly
37 /// good way to indicate tombstone or empty keys for strings, we want
38 /// to wrap std::string to indicate that this is a "special" string
39 /// not expected to take on certain values (those of the tombstone and
40 /// empty keys). This makes things a little safer as it clarifies
41 /// that DenseMap is really not appropriate for general strings.
43 class TableGenStringKey {
45 TableGenStringKey(const std::string &str) : data(str) {}
46 TableGenStringKey(const char *str) : data(str) {}
48 const std::string &str() const { return data; }
50 friend hash_code hash_value(const TableGenStringKey &Value) {
51 using llvm::hash_value;
52 return hash_value(Value.str());
58 /// Specialize DenseMapInfo for TableGenStringKey.
59 template<> struct DenseMapInfo<TableGenStringKey> {
60 static inline TableGenStringKey getEmptyKey() {
61 TableGenStringKey Empty("<<<EMPTY KEY>>>");
64 static inline TableGenStringKey getTombstoneKey() {
65 TableGenStringKey Tombstone("<<<TOMBSTONE KEY>>>");
68 static unsigned getHashValue(const TableGenStringKey& Val) {
69 using llvm::hash_value;
70 return hash_value(Val);
72 static bool isEqual(const TableGenStringKey& LHS,
73 const TableGenStringKey& RHS) {
74 return LHS.str() == RHS.str();
80 //===----------------------------------------------------------------------===//
81 // Type implementations
82 //===----------------------------------------------------------------------===//
84 BitRecTy BitRecTy::Shared;
85 IntRecTy IntRecTy::Shared;
86 StringRecTy StringRecTy::Shared;
87 DagRecTy DagRecTy::Shared;
89 void RecTy::anchor() { }
90 void RecTy::dump() const { print(errs()); }
92 ListRecTy *RecTy::getListTy() {
94 ListTy = new ListRecTy(this);
98 bool RecTy::baseClassOf(const RecTy *RHS) const{
99 assert (RHS && "NULL pointer");
100 return Kind == RHS->getRecTyKind();
103 Init *BitRecTy::convertValue(BitsInit *BI) {
104 if (BI->getNumBits() != 1) return 0; // Only accept if just one bit!
105 return BI->getBit(0);
108 Init *BitRecTy::convertValue(IntInit *II) {
109 int64_t Val = II->getValue();
110 if (Val != 0 && Val != 1) return 0; // Only accept 0 or 1 for a bit!
112 return BitInit::get(Val != 0);
115 Init *BitRecTy::convertValue(TypedInit *VI) {
116 RecTy *Ty = VI->getType();
117 if (isa<BitRecTy>(Ty) || isa<BitsRecTy>(Ty) || isa<IntRecTy>(Ty))
118 return VI; // Accept variable if it is already of bit type!
122 bool BitRecTy::baseClassOf(const RecTy *RHS) const{
123 if(RecTy::baseClassOf(RHS) || getRecTyKind() == IntRecTyKind)
125 if(const BitsRecTy *BitsTy = dyn_cast<BitsRecTy>(RHS))
126 return BitsTy->getNumBits() == 1;
130 BitsRecTy *BitsRecTy::get(unsigned Sz) {
131 static std::vector<BitsRecTy*> Shared;
132 if (Sz >= Shared.size())
133 Shared.resize(Sz + 1);
134 BitsRecTy *&Ty = Shared[Sz];
136 Ty = new BitsRecTy(Sz);
140 std::string BitsRecTy::getAsString() const {
141 return "bits<" + utostr(Size) + ">";
144 Init *BitsRecTy::convertValue(UnsetInit *UI) {
145 SmallVector<Init *, 16> NewBits(Size);
147 for (unsigned i = 0; i != Size; ++i)
148 NewBits[i] = UnsetInit::get();
150 return BitsInit::get(NewBits);
153 Init *BitsRecTy::convertValue(BitInit *UI) {
154 if (Size != 1) return 0; // Can only convert single bit.
155 return BitsInit::get(UI);
158 /// canFitInBitfield - Return true if the number of bits is large enough to hold
159 /// the integer value.
160 static bool canFitInBitfield(int64_t Value, unsigned NumBits) {
161 // For example, with NumBits == 4, we permit Values from [-7 .. 15].
162 return (NumBits >= sizeof(Value) * 8) ||
163 (Value >> NumBits == 0) || (Value >> (NumBits-1) == -1);
166 /// convertValue from Int initializer to bits type: Split the integer up into the
167 /// appropriate bits.
169 Init *BitsRecTy::convertValue(IntInit *II) {
170 int64_t Value = II->getValue();
171 // Make sure this bitfield is large enough to hold the integer value.
172 if (!canFitInBitfield(Value, Size))
175 SmallVector<Init *, 16> NewBits(Size);
177 for (unsigned i = 0; i != Size; ++i)
178 NewBits[i] = BitInit::get(Value & (1LL << i));
180 return BitsInit::get(NewBits);
183 Init *BitsRecTy::convertValue(BitsInit *BI) {
184 // If the number of bits is right, return it. Otherwise we need to expand or
186 if (BI->getNumBits() == Size) return BI;
190 Init *BitsRecTy::convertValue(TypedInit *VI) {
191 if (Size == 1 && isa<BitRecTy>(VI->getType()))
192 return BitsInit::get(VI);
194 if (VI->getType()->typeIsConvertibleTo(this)) {
195 SmallVector<Init *, 16> NewBits(Size);
197 for (unsigned i = 0; i != Size; ++i)
198 NewBits[i] = VarBitInit::get(VI, i);
199 return BitsInit::get(NewBits);
205 bool BitsRecTy::baseClassOf(const RecTy *RHS) const{
206 if (RecTy::baseClassOf(RHS)) //argument and the receiver are the same type
207 return cast<BitsRecTy>(RHS)->Size == Size;
208 RecTyKind kind = RHS->getRecTyKind();
209 return (kind == BitRecTyKind && Size == 1) || (kind == IntRecTyKind);
212 Init *IntRecTy::convertValue(BitInit *BI) {
213 return IntInit::get(BI->getValue());
216 Init *IntRecTy::convertValue(BitsInit *BI) {
218 for (unsigned i = 0, e = BI->getNumBits(); i != e; ++i)
219 if (BitInit *Bit = dyn_cast<BitInit>(BI->getBit(i))) {
220 Result |= Bit->getValue() << i;
224 return IntInit::get(Result);
227 Init *IntRecTy::convertValue(TypedInit *TI) {
228 if (TI->getType()->typeIsConvertibleTo(this))
229 return TI; // Accept variable if already of the right type!
233 bool IntRecTy::baseClassOf(const RecTy *RHS) const{
234 RecTyKind kind = RHS->getRecTyKind();
235 return kind==BitRecTyKind || kind==BitsRecTyKind || kind==IntRecTyKind;
238 Init *StringRecTy::convertValue(UnOpInit *BO) {
239 if (BO->getOpcode() == UnOpInit::CAST) {
240 Init *L = BO->getOperand()->convertInitializerTo(this);
241 if (L == 0) return 0;
242 if (L != BO->getOperand())
243 return UnOpInit::get(UnOpInit::CAST, L, new StringRecTy);
247 return convertValue((TypedInit*)BO);
250 Init *StringRecTy::convertValue(BinOpInit *BO) {
251 if (BO->getOpcode() == BinOpInit::STRCONCAT) {
252 Init *L = BO->getLHS()->convertInitializerTo(this);
253 Init *R = BO->getRHS()->convertInitializerTo(this);
254 if (L == 0 || R == 0) return 0;
255 if (L != BO->getLHS() || R != BO->getRHS())
256 return BinOpInit::get(BinOpInit::STRCONCAT, L, R, new StringRecTy);
260 return convertValue((TypedInit*)BO);
264 Init *StringRecTy::convertValue(TypedInit *TI) {
265 if (isa<StringRecTy>(TI->getType()))
266 return TI; // Accept variable if already of the right type!
270 std::string ListRecTy::getAsString() const {
271 return "list<" + Ty->getAsString() + ">";
274 Init *ListRecTy::convertValue(ListInit *LI) {
275 std::vector<Init*> Elements;
277 // Verify that all of the elements of the list are subclasses of the
278 // appropriate class!
279 for (unsigned i = 0, e = LI->getSize(); i != e; ++i)
280 if (Init *CI = LI->getElement(i)->convertInitializerTo(Ty))
281 Elements.push_back(CI);
285 if (!isa<ListRecTy>(LI->getType()))
288 return ListInit::get(Elements, this);
291 Init *ListRecTy::convertValue(TypedInit *TI) {
292 // Ensure that TI is compatible with our class.
293 if (ListRecTy *LRT = dyn_cast<ListRecTy>(TI->getType()))
294 if (LRT->getElementType()->typeIsConvertibleTo(getElementType()))
299 bool ListRecTy::baseClassOf(const RecTy *RHS) const{
300 if(const ListRecTy* ListTy = dyn_cast<ListRecTy>(RHS))
301 return ListTy->getElementType()->typeIsConvertibleTo(Ty);
305 Init *DagRecTy::convertValue(TypedInit *TI) {
306 if (TI->getType()->typeIsConvertibleTo(this))
311 Init *DagRecTy::convertValue(UnOpInit *BO) {
312 if (BO->getOpcode() == UnOpInit::CAST) {
313 Init *L = BO->getOperand()->convertInitializerTo(this);
314 if (L == 0) return 0;
315 if (L != BO->getOperand())
316 return UnOpInit::get(UnOpInit::CAST, L, new DagRecTy);
322 Init *DagRecTy::convertValue(BinOpInit *BO) {
323 if (BO->getOpcode() == BinOpInit::CONCAT) {
324 Init *L = BO->getLHS()->convertInitializerTo(this);
325 Init *R = BO->getRHS()->convertInitializerTo(this);
326 if (L == 0 || R == 0) return 0;
327 if (L != BO->getLHS() || R != BO->getRHS())
328 return BinOpInit::get(BinOpInit::CONCAT, L, R, new DagRecTy);
334 RecordRecTy *RecordRecTy::get(Record *R) {
335 return dyn_cast<RecordRecTy>(R->getDefInit()->getType());
338 std::string RecordRecTy::getAsString() const {
339 return Rec->getName();
342 Init *RecordRecTy::convertValue(DefInit *DI) {
343 // Ensure that DI is a subclass of Rec.
344 if (!DI->getDef()->isSubClassOf(Rec))
349 Init *RecordRecTy::convertValue(TypedInit *TI) {
350 // Ensure that TI is compatible with Rec.
351 if (RecordRecTy *RRT = dyn_cast<RecordRecTy>(TI->getType()))
352 if (RRT->getRecord()->isSubClassOf(getRecord()) ||
353 RRT->getRecord() == getRecord())
358 bool RecordRecTy::baseClassOf(const RecTy *RHS) const{
359 const RecordRecTy *RTy = dyn_cast<RecordRecTy>(RHS);
363 if (Rec == RTy->getRecord() || RTy->getRecord()->isSubClassOf(Rec))
366 const std::vector<Record*> &SC = Rec->getSuperClasses();
367 for (unsigned i = 0, e = SC.size(); i != e; ++i)
368 if (RTy->getRecord()->isSubClassOf(SC[i]))
374 /// resolveTypes - Find a common type that T1 and T2 convert to.
375 /// Return 0 if no such type exists.
377 RecTy *llvm::resolveTypes(RecTy *T1, RecTy *T2) {
378 if (T1->typeIsConvertibleTo(T2))
380 if (T2->typeIsConvertibleTo(T1))
383 // If one is a Record type, check superclasses
384 if (RecordRecTy *RecTy1 = dyn_cast<RecordRecTy>(T1)) {
385 // See if T2 inherits from a type T1 also inherits from
386 const std::vector<Record *> &T1SuperClasses =
387 RecTy1->getRecord()->getSuperClasses();
388 for(std::vector<Record *>::const_iterator i = T1SuperClasses.begin(),
389 iend = T1SuperClasses.end();
392 RecordRecTy *SuperRecTy1 = RecordRecTy::get(*i);
393 RecTy *NewType1 = resolveTypes(SuperRecTy1, T2);
395 if (NewType1 != SuperRecTy1) {
402 if (RecordRecTy *RecTy2 = dyn_cast<RecordRecTy>(T2)) {
403 // See if T1 inherits from a type T2 also inherits from
404 const std::vector<Record *> &T2SuperClasses =
405 RecTy2->getRecord()->getSuperClasses();
406 for (std::vector<Record *>::const_iterator i = T2SuperClasses.begin(),
407 iend = T2SuperClasses.end();
410 RecordRecTy *SuperRecTy2 = RecordRecTy::get(*i);
411 RecTy *NewType2 = resolveTypes(T1, SuperRecTy2);
413 if (NewType2 != SuperRecTy2) {
424 //===----------------------------------------------------------------------===//
425 // Initializer implementations
426 //===----------------------------------------------------------------------===//
428 void Init::anchor() { }
429 void Init::dump() const { return print(errs()); }
431 void UnsetInit::anchor() { }
433 UnsetInit *UnsetInit::get() {
434 static UnsetInit TheInit;
438 void BitInit::anchor() { }
440 BitInit *BitInit::get(bool V) {
441 static BitInit True(true);
442 static BitInit False(false);
444 return V ? &True : &False;
448 ProfileBitsInit(FoldingSetNodeID &ID, ArrayRef<Init *> Range) {
449 ID.AddInteger(Range.size());
451 for (ArrayRef<Init *>::iterator i = Range.begin(),
458 BitsInit *BitsInit::get(ArrayRef<Init *> Range) {
459 typedef FoldingSet<BitsInit> Pool;
463 ProfileBitsInit(ID, Range);
466 if (BitsInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
469 BitsInit *I = new BitsInit(Range);
470 ThePool.InsertNode(I, IP);
475 void BitsInit::Profile(FoldingSetNodeID &ID) const {
476 ProfileBitsInit(ID, Bits);
480 BitsInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) const {
481 SmallVector<Init *, 16> NewBits(Bits.size());
483 for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
484 if (Bits[i] >= getNumBits())
486 NewBits[i] = getBit(Bits[i]);
488 return BitsInit::get(NewBits);
491 std::string BitsInit::getAsString() const {
492 std::string Result = "{ ";
493 for (unsigned i = 0, e = getNumBits(); i != e; ++i) {
494 if (i) Result += ", ";
495 if (Init *Bit = getBit(e-i-1))
496 Result += Bit->getAsString();
500 return Result + " }";
503 // Fix bit initializer to preserve the behavior that bit reference from a unset
504 // bits initializer will resolve into VarBitInit to keep the field name and bit
505 // number used in targets with fixed insn length.
506 static Init *fixBitInit(const RecordVal *RV, Init *Before, Init *After) {
507 if (RV || After != UnsetInit::get())
512 // resolveReferences - If there are any field references that refer to fields
513 // that have been filled in, we can propagate the values now.
515 Init *BitsInit::resolveReferences(Record &R, const RecordVal *RV) const {
516 bool Changed = false;
517 SmallVector<Init *, 16> NewBits(getNumBits());
519 Init *CachedInit = 0;
520 Init *CachedBitVar = 0;
521 bool CachedBitVarChanged = false;
523 for (unsigned i = 0, e = getNumBits(); i != e; ++i) {
524 Init *CurBit = Bits[i];
525 Init *CurBitVar = CurBit->getBitVar();
529 if (CurBitVar == CachedBitVar) {
530 if (CachedBitVarChanged) {
531 Init *Bit = CachedInit->getBit(CurBit->getBitNum());
532 NewBits[i] = fixBitInit(RV, CurBit, Bit);
536 CachedBitVar = CurBitVar;
537 CachedBitVarChanged = false;
542 CurBitVar = CurBitVar->resolveReferences(R, RV);
543 CachedBitVarChanged |= B != CurBitVar;
544 Changed |= B != CurBitVar;
545 } while (B != CurBitVar);
546 CachedInit = CurBitVar;
548 if (CachedBitVarChanged) {
549 Init *Bit = CurBitVar->getBit(CurBit->getBitNum());
550 NewBits[i] = fixBitInit(RV, CurBit, Bit);
555 return BitsInit::get(NewBits);
557 return const_cast<BitsInit *>(this);
560 IntInit *IntInit::get(int64_t V) {
561 typedef DenseMap<int64_t, IntInit *> Pool;
564 IntInit *&I = ThePool[V];
565 if (!I) I = new IntInit(V);
569 std::string IntInit::getAsString() const {
570 return itostr(Value);
574 IntInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) const {
575 SmallVector<Init *, 16> NewBits(Bits.size());
577 for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
581 NewBits[i] = BitInit::get(Value & (INT64_C(1) << Bits[i]));
583 return BitsInit::get(NewBits);
586 void StringInit::anchor() { }
588 StringInit *StringInit::get(StringRef V) {
589 typedef StringMap<StringInit *> Pool;
592 StringInit *&I = ThePool[V];
593 if (!I) I = new StringInit(V);
597 static void ProfileListInit(FoldingSetNodeID &ID,
598 ArrayRef<Init *> Range,
600 ID.AddInteger(Range.size());
601 ID.AddPointer(EltTy);
603 for (ArrayRef<Init *>::iterator i = Range.begin(),
610 ListInit *ListInit::get(ArrayRef<Init *> Range, RecTy *EltTy) {
611 typedef FoldingSet<ListInit> Pool;
614 // Just use the FoldingSetNodeID to compute a hash. Use a DenseMap
615 // for actual storage.
617 ProfileListInit(ID, Range, EltTy);
620 if (ListInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
623 ListInit *I = new ListInit(Range, EltTy);
624 ThePool.InsertNode(I, IP);
628 void ListInit::Profile(FoldingSetNodeID &ID) const {
629 ListRecTy *ListType = dyn_cast<ListRecTy>(getType());
630 assert(ListType && "Bad type for ListInit!");
631 RecTy *EltTy = ListType->getElementType();
633 ProfileListInit(ID, Values, EltTy);
637 ListInit::convertInitListSlice(const std::vector<unsigned> &Elements) const {
638 std::vector<Init*> Vals;
639 for (unsigned i = 0, e = Elements.size(); i != e; ++i) {
640 if (Elements[i] >= getSize())
642 Vals.push_back(getElement(Elements[i]));
644 return ListInit::get(Vals, getType());
647 Record *ListInit::getElementAsRecord(unsigned i) const {
648 assert(i < Values.size() && "List element index out of range!");
649 DefInit *DI = dyn_cast<DefInit>(Values[i]);
651 PrintFatalError("Expected record in list!");
655 Init *ListInit::resolveReferences(Record &R, const RecordVal *RV) const {
656 std::vector<Init*> Resolved;
657 Resolved.reserve(getSize());
658 bool Changed = false;
660 for (unsigned i = 0, e = getSize(); i != e; ++i) {
662 Init *CurElt = getElement(i);
666 CurElt = CurElt->resolveReferences(R, RV);
667 Changed |= E != CurElt;
668 } while (E != CurElt);
669 Resolved.push_back(E);
673 return ListInit::get(Resolved, getType());
674 return const_cast<ListInit *>(this);
677 Init *ListInit::resolveListElementReference(Record &R, const RecordVal *IRV,
678 unsigned Elt) const {
679 if (Elt >= getSize())
680 return 0; // Out of range reference.
681 Init *E = getElement(Elt);
682 // If the element is set to some value, or if we are resolving a reference
683 // to a specific variable and that variable is explicitly unset, then
684 // replace the VarListElementInit with it.
685 if (IRV || !isa<UnsetInit>(E))
690 std::string ListInit::getAsString() const {
691 std::string Result = "[";
692 for (unsigned i = 0, e = Values.size(); i != e; ++i) {
693 if (i) Result += ", ";
694 Result += Values[i]->getAsString();
699 Init *OpInit::resolveListElementReference(Record &R, const RecordVal *IRV,
700 unsigned Elt) const {
701 Init *Resolved = resolveReferences(R, IRV);
702 OpInit *OResolved = dyn_cast<OpInit>(Resolved);
704 Resolved = OResolved->Fold(&R, 0);
707 if (Resolved != this) {
708 TypedInit *Typed = dyn_cast<TypedInit>(Resolved);
709 assert(Typed && "Expected typed init for list reference");
711 Init *New = Typed->resolveListElementReference(R, IRV, Elt);
714 return VarListElementInit::get(Typed, Elt);
721 Init *OpInit::getBit(unsigned Bit) const {
722 if (getType() == BitRecTy::get())
723 return const_cast<OpInit*>(this);
724 return VarBitInit::get(const_cast<OpInit*>(this), Bit);
727 UnOpInit *UnOpInit::get(UnaryOp opc, Init *lhs, RecTy *Type) {
728 typedef std::pair<std::pair<unsigned, Init *>, RecTy *> Key;
730 typedef DenseMap<Key, UnOpInit *> Pool;
733 Key TheKey(std::make_pair(std::make_pair(opc, lhs), Type));
735 UnOpInit *&I = ThePool[TheKey];
736 if (!I) I = new UnOpInit(opc, lhs, Type);
740 Init *UnOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) const {
741 switch (getOpcode()) {
743 if (getType()->getAsString() == "string") {
744 if (StringInit *LHSs = dyn_cast<StringInit>(LHS))
747 if (DefInit *LHSd = dyn_cast<DefInit>(LHS))
748 return StringInit::get(LHSd->getDef()->getName());
750 if (IntInit *LHSi = dyn_cast<IntInit>(LHS))
751 return StringInit::get(LHSi->getAsString());
753 if (StringInit *LHSs = dyn_cast<StringInit>(LHS)) {
754 std::string Name = LHSs->getValue();
756 // From TGParser::ParseIDValue
758 if (const RecordVal *RV = CurRec->getValue(Name)) {
759 if (RV->getType() != getType())
760 PrintFatalError("type mismatch in cast");
761 return VarInit::get(Name, RV->getType());
764 Init *TemplateArgName = QualifyName(*CurRec, CurMultiClass, Name,
767 if (CurRec->isTemplateArg(TemplateArgName)) {
768 const RecordVal *RV = CurRec->getValue(TemplateArgName);
769 assert(RV && "Template arg doesn't exist??");
771 if (RV->getType() != getType())
772 PrintFatalError("type mismatch in cast");
774 return VarInit::get(TemplateArgName, RV->getType());
779 Init *MCName = QualifyName(CurMultiClass->Rec, CurMultiClass, Name, "::");
781 if (CurMultiClass->Rec.isTemplateArg(MCName)) {
782 const RecordVal *RV = CurMultiClass->Rec.getValue(MCName);
783 assert(RV && "Template arg doesn't exist??");
785 if (RV->getType() != getType())
786 PrintFatalError("type mismatch in cast");
788 return VarInit::get(MCName, RV->getType());
792 if (Record *D = (CurRec->getRecords()).getDef(Name))
793 return DefInit::get(D);
795 PrintFatalError(CurRec->getLoc(),
796 "Undefined reference:'" + Name + "'\n");
802 if (ListInit *LHSl = dyn_cast<ListInit>(LHS)) {
803 if (LHSl->getSize() == 0) {
804 assert(0 && "Empty list in car");
807 return LHSl->getElement(0);
812 if (ListInit *LHSl = dyn_cast<ListInit>(LHS)) {
813 if (LHSl->getSize() == 0) {
814 assert(0 && "Empty list in cdr");
817 // Note the +1. We can't just pass the result of getValues()
819 ArrayRef<Init *>::iterator begin = LHSl->getValues().begin()+1;
820 ArrayRef<Init *>::iterator end = LHSl->getValues().end();
822 ListInit::get(ArrayRef<Init *>(begin, end - begin),
829 if (ListInit *LHSl = dyn_cast<ListInit>(LHS)) {
830 if (LHSl->getSize() == 0) {
831 return IntInit::get(1);
833 return IntInit::get(0);
836 if (StringInit *LHSs = dyn_cast<StringInit>(LHS)) {
837 if (LHSs->getValue().empty()) {
838 return IntInit::get(1);
840 return IntInit::get(0);
847 return const_cast<UnOpInit *>(this);
850 Init *UnOpInit::resolveReferences(Record &R, const RecordVal *RV) const {
851 Init *lhs = LHS->resolveReferences(R, RV);
854 return (UnOpInit::get(getOpcode(), lhs, getType()))->Fold(&R, 0);
858 std::string UnOpInit::getAsString() const {
861 case CAST: Result = "!cast<" + getType()->getAsString() + ">"; break;
862 case HEAD: Result = "!head"; break;
863 case TAIL: Result = "!tail"; break;
864 case EMPTY: Result = "!empty"; break;
866 return Result + "(" + LHS->getAsString() + ")";
869 BinOpInit *BinOpInit::get(BinaryOp opc, Init *lhs,
870 Init *rhs, RecTy *Type) {
872 std::pair<std::pair<unsigned, Init *>, Init *>,
876 typedef DenseMap<Key, BinOpInit *> Pool;
879 Key TheKey(std::make_pair(std::make_pair(std::make_pair(opc, lhs), rhs),
882 BinOpInit *&I = ThePool[TheKey];
883 if (!I) I = new BinOpInit(opc, lhs, rhs, Type);
887 Init *BinOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) const {
888 switch (getOpcode()) {
890 DagInit *LHSs = dyn_cast<DagInit>(LHS);
891 DagInit *RHSs = dyn_cast<DagInit>(RHS);
893 DefInit *LOp = dyn_cast<DefInit>(LHSs->getOperator());
894 DefInit *ROp = dyn_cast<DefInit>(RHSs->getOperator());
895 if (LOp == 0 || ROp == 0 || LOp->getDef() != ROp->getDef())
896 PrintFatalError("Concated Dag operators do not match!");
897 std::vector<Init*> Args;
898 std::vector<std::string> ArgNames;
899 for (unsigned i = 0, e = LHSs->getNumArgs(); i != e; ++i) {
900 Args.push_back(LHSs->getArg(i));
901 ArgNames.push_back(LHSs->getArgName(i));
903 for (unsigned i = 0, e = RHSs->getNumArgs(); i != e; ++i) {
904 Args.push_back(RHSs->getArg(i));
905 ArgNames.push_back(RHSs->getArgName(i));
907 return DagInit::get(LHSs->getOperator(), "", Args, ArgNames);
912 StringInit *LHSs = dyn_cast<StringInit>(LHS);
913 StringInit *RHSs = dyn_cast<StringInit>(RHS);
915 return StringInit::get(LHSs->getValue() + RHSs->getValue());
919 // try to fold eq comparison for 'bit' and 'int', otherwise fallback
920 // to string objects.
922 dyn_cast_or_null<IntInit>(LHS->convertInitializerTo(IntRecTy::get()));
924 dyn_cast_or_null<IntInit>(RHS->convertInitializerTo(IntRecTy::get()));
927 return IntInit::get(L->getValue() == R->getValue());
929 StringInit *LHSs = dyn_cast<StringInit>(LHS);
930 StringInit *RHSs = dyn_cast<StringInit>(RHS);
932 // Make sure we've resolved
934 return IntInit::get(LHSs->getValue() == RHSs->getValue());
942 IntInit *LHSi = dyn_cast<IntInit>(LHS);
943 IntInit *RHSi = dyn_cast<IntInit>(RHS);
945 int64_t LHSv = LHSi->getValue(), RHSv = RHSi->getValue();
947 switch (getOpcode()) {
948 default: llvm_unreachable("Bad opcode!");
949 case ADD: Result = LHSv + RHSv; break;
950 case SHL: Result = LHSv << RHSv; break;
951 case SRA: Result = LHSv >> RHSv; break;
952 case SRL: Result = (uint64_t)LHSv >> (uint64_t)RHSv; break;
954 return IntInit::get(Result);
959 return const_cast<BinOpInit *>(this);
962 Init *BinOpInit::resolveReferences(Record &R, const RecordVal *RV) const {
963 Init *lhs = LHS->resolveReferences(R, RV);
964 Init *rhs = RHS->resolveReferences(R, RV);
966 if (LHS != lhs || RHS != rhs)
967 return (BinOpInit::get(getOpcode(), lhs, rhs, getType()))->Fold(&R, 0);
971 std::string BinOpInit::getAsString() const {
974 case CONCAT: Result = "!con"; break;
975 case ADD: Result = "!add"; break;
976 case SHL: Result = "!shl"; break;
977 case SRA: Result = "!sra"; break;
978 case SRL: Result = "!srl"; break;
979 case EQ: Result = "!eq"; break;
980 case STRCONCAT: Result = "!strconcat"; break;
982 return Result + "(" + LHS->getAsString() + ", " + RHS->getAsString() + ")";
985 TernOpInit *TernOpInit::get(TernaryOp opc, Init *lhs,
986 Init *mhs, Init *rhs,
990 std::pair<std::pair<unsigned, RecTy *>, Init *>,
996 typedef DenseMap<Key, TernOpInit *> Pool;
999 Key TheKey(std::make_pair(std::make_pair(std::make_pair(std::make_pair(opc,
1005 TernOpInit *&I = ThePool[TheKey];
1006 if (!I) I = new TernOpInit(opc, lhs, mhs, rhs, Type);
1010 static Init *ForeachHelper(Init *LHS, Init *MHS, Init *RHS, RecTy *Type,
1011 Record *CurRec, MultiClass *CurMultiClass);
1013 static Init *EvaluateOperation(OpInit *RHSo, Init *LHS, Init *Arg,
1014 RecTy *Type, Record *CurRec,
1015 MultiClass *CurMultiClass) {
1016 std::vector<Init *> NewOperands;
1018 TypedInit *TArg = dyn_cast<TypedInit>(Arg);
1020 // If this is a dag, recurse
1021 if (TArg && TArg->getType()->getAsString() == "dag") {
1022 Init *Result = ForeachHelper(LHS, Arg, RHSo, Type,
1023 CurRec, CurMultiClass);
1031 for (int i = 0; i < RHSo->getNumOperands(); ++i) {
1032 OpInit *RHSoo = dyn_cast<OpInit>(RHSo->getOperand(i));
1035 Init *Result = EvaluateOperation(RHSoo, LHS, Arg,
1036 Type, CurRec, CurMultiClass);
1038 NewOperands.push_back(Result);
1040 NewOperands.push_back(Arg);
1042 } else if (LHS->getAsString() == RHSo->getOperand(i)->getAsString()) {
1043 NewOperands.push_back(Arg);
1045 NewOperands.push_back(RHSo->getOperand(i));
1049 // Now run the operator and use its result as the new leaf
1050 const OpInit *NewOp = RHSo->clone(NewOperands);
1051 Init *NewVal = NewOp->Fold(CurRec, CurMultiClass);
1052 if (NewVal != NewOp)
1058 static Init *ForeachHelper(Init *LHS, Init *MHS, Init *RHS, RecTy *Type,
1059 Record *CurRec, MultiClass *CurMultiClass) {
1060 DagInit *MHSd = dyn_cast<DagInit>(MHS);
1061 ListInit *MHSl = dyn_cast<ListInit>(MHS);
1063 OpInit *RHSo = dyn_cast<OpInit>(RHS);
1066 PrintFatalError(CurRec->getLoc(), "!foreach requires an operator\n");
1069 TypedInit *LHSt = dyn_cast<TypedInit>(LHS);
1072 PrintFatalError(CurRec->getLoc(), "!foreach requires typed variable\n");
1074 if ((MHSd && isa<DagRecTy>(Type)) || (MHSl && isa<ListRecTy>(Type))) {
1076 Init *Val = MHSd->getOperator();
1077 Init *Result = EvaluateOperation(RHSo, LHS, Val,
1078 Type, CurRec, CurMultiClass);
1083 std::vector<std::pair<Init *, std::string> > args;
1084 for (unsigned int i = 0; i < MHSd->getNumArgs(); ++i) {
1086 std::string ArgName;
1087 Arg = MHSd->getArg(i);
1088 ArgName = MHSd->getArgName(i);
1091 Init *Result = EvaluateOperation(RHSo, LHS, Arg, Type,
1092 CurRec, CurMultiClass);
1097 // TODO: Process arg names
1098 args.push_back(std::make_pair(Arg, ArgName));
1101 return DagInit::get(Val, "", args);
1104 std::vector<Init *> NewOperands;
1105 std::vector<Init *> NewList(MHSl->begin(), MHSl->end());
1107 for (std::vector<Init *>::iterator li = NewList.begin(),
1108 liend = NewList.end();
1112 NewOperands.clear();
1113 for(int i = 0; i < RHSo->getNumOperands(); ++i) {
1114 // First, replace the foreach variable with the list item
1115 if (LHS->getAsString() == RHSo->getOperand(i)->getAsString()) {
1116 NewOperands.push_back(Item);
1118 NewOperands.push_back(RHSo->getOperand(i));
1122 // Now run the operator and use its result as the new list item
1123 const OpInit *NewOp = RHSo->clone(NewOperands);
1124 Init *NewItem = NewOp->Fold(CurRec, CurMultiClass);
1125 if (NewItem != NewOp)
1128 return ListInit::get(NewList, MHSl->getType());
1134 Init *TernOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) const {
1135 switch (getOpcode()) {
1137 DefInit *LHSd = dyn_cast<DefInit>(LHS);
1138 VarInit *LHSv = dyn_cast<VarInit>(LHS);
1139 StringInit *LHSs = dyn_cast<StringInit>(LHS);
1141 DefInit *MHSd = dyn_cast<DefInit>(MHS);
1142 VarInit *MHSv = dyn_cast<VarInit>(MHS);
1143 StringInit *MHSs = dyn_cast<StringInit>(MHS);
1145 DefInit *RHSd = dyn_cast<DefInit>(RHS);
1146 VarInit *RHSv = dyn_cast<VarInit>(RHS);
1147 StringInit *RHSs = dyn_cast<StringInit>(RHS);
1149 if ((LHSd && MHSd && RHSd)
1150 || (LHSv && MHSv && RHSv)
1151 || (LHSs && MHSs && RHSs)) {
1153 Record *Val = RHSd->getDef();
1154 if (LHSd->getAsString() == RHSd->getAsString()) {
1155 Val = MHSd->getDef();
1157 return DefInit::get(Val);
1160 std::string Val = RHSv->getName();
1161 if (LHSv->getAsString() == RHSv->getAsString()) {
1162 Val = MHSv->getName();
1164 return VarInit::get(Val, getType());
1167 std::string Val = RHSs->getValue();
1169 std::string::size_type found;
1170 std::string::size_type idx = 0;
1172 found = Val.find(LHSs->getValue(), idx);
1173 if (found != std::string::npos) {
1174 Val.replace(found, LHSs->getValue().size(), MHSs->getValue());
1176 idx = found + MHSs->getValue().size();
1177 } while (found != std::string::npos);
1179 return StringInit::get(Val);
1186 Init *Result = ForeachHelper(LHS, MHS, RHS, getType(),
1187 CurRec, CurMultiClass);
1195 IntInit *LHSi = dyn_cast<IntInit>(LHS);
1196 if (Init *I = LHS->convertInitializerTo(IntRecTy::get()))
1197 LHSi = dyn_cast<IntInit>(I);
1199 if (LHSi->getValue()) {
1209 return const_cast<TernOpInit *>(this);
1212 Init *TernOpInit::resolveReferences(Record &R,
1213 const RecordVal *RV) const {
1214 Init *lhs = LHS->resolveReferences(R, RV);
1216 if (Opc == IF && lhs != LHS) {
1217 IntInit *Value = dyn_cast<IntInit>(lhs);
1218 if (Init *I = lhs->convertInitializerTo(IntRecTy::get()))
1219 Value = dyn_cast<IntInit>(I);
1222 if (Value->getValue()) {
1223 Init *mhs = MHS->resolveReferences(R, RV);
1224 return (TernOpInit::get(getOpcode(), lhs, mhs,
1225 RHS, getType()))->Fold(&R, 0);
1227 Init *rhs = RHS->resolveReferences(R, RV);
1228 return (TernOpInit::get(getOpcode(), lhs, MHS,
1229 rhs, getType()))->Fold(&R, 0);
1234 Init *mhs = MHS->resolveReferences(R, RV);
1235 Init *rhs = RHS->resolveReferences(R, RV);
1237 if (LHS != lhs || MHS != mhs || RHS != rhs)
1238 return (TernOpInit::get(getOpcode(), lhs, mhs, rhs,
1239 getType()))->Fold(&R, 0);
1243 std::string TernOpInit::getAsString() const {
1246 case SUBST: Result = "!subst"; break;
1247 case FOREACH: Result = "!foreach"; break;
1248 case IF: Result = "!if"; break;
1250 return Result + "(" + LHS->getAsString() + ", " + MHS->getAsString() + ", "
1251 + RHS->getAsString() + ")";
1254 RecTy *TypedInit::getFieldType(const std::string &FieldName) const {
1255 if (RecordRecTy *RecordType = dyn_cast<RecordRecTy>(getType()))
1256 if (RecordVal *Field = RecordType->getRecord()->getValue(FieldName))
1257 return Field->getType();
1262 TypedInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) const {
1263 BitsRecTy *T = dyn_cast<BitsRecTy>(getType());
1264 if (T == 0) return 0; // Cannot subscript a non-bits variable.
1265 unsigned NumBits = T->getNumBits();
1267 SmallVector<Init *, 16> NewBits(Bits.size());
1268 for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
1269 if (Bits[i] >= NumBits)
1272 NewBits[i] = VarBitInit::get(const_cast<TypedInit *>(this), Bits[i]);
1274 return BitsInit::get(NewBits);
1278 TypedInit::convertInitListSlice(const std::vector<unsigned> &Elements) const {
1279 ListRecTy *T = dyn_cast<ListRecTy>(getType());
1280 if (T == 0) return 0; // Cannot subscript a non-list variable.
1282 if (Elements.size() == 1)
1283 return VarListElementInit::get(const_cast<TypedInit *>(this), Elements[0]);
1285 std::vector<Init*> ListInits;
1286 ListInits.reserve(Elements.size());
1287 for (unsigned i = 0, e = Elements.size(); i != e; ++i)
1288 ListInits.push_back(VarListElementInit::get(const_cast<TypedInit *>(this),
1290 return ListInit::get(ListInits, T);
1294 VarInit *VarInit::get(const std::string &VN, RecTy *T) {
1295 Init *Value = StringInit::get(VN);
1296 return VarInit::get(Value, T);
1299 VarInit *VarInit::get(Init *VN, RecTy *T) {
1300 typedef std::pair<RecTy *, Init *> Key;
1301 typedef DenseMap<Key, VarInit *> Pool;
1302 static Pool ThePool;
1304 Key TheKey(std::make_pair(T, VN));
1306 VarInit *&I = ThePool[TheKey];
1307 if (!I) I = new VarInit(VN, T);
1311 const std::string &VarInit::getName() const {
1312 StringInit *NameString = dyn_cast<StringInit>(getNameInit());
1313 assert(NameString && "VarInit name is not a string!");
1314 return NameString->getValue();
1317 Init *VarInit::getBit(unsigned Bit) const {
1318 if (getType() == BitRecTy::get())
1319 return const_cast<VarInit*>(this);
1320 return VarBitInit::get(const_cast<VarInit*>(this), Bit);
1323 Init *VarInit::resolveListElementReference(Record &R,
1324 const RecordVal *IRV,
1325 unsigned Elt) const {
1326 if (R.isTemplateArg(getNameInit())) return 0;
1327 if (IRV && IRV->getNameInit() != getNameInit()) return 0;
1329 RecordVal *RV = R.getValue(getNameInit());
1330 assert(RV && "Reference to a non-existent variable?");
1331 ListInit *LI = dyn_cast<ListInit>(RV->getValue());
1333 TypedInit *VI = dyn_cast<TypedInit>(RV->getValue());
1334 assert(VI && "Invalid list element!");
1335 return VarListElementInit::get(VI, Elt);
1338 if (Elt >= LI->getSize())
1339 return 0; // Out of range reference.
1340 Init *E = LI->getElement(Elt);
1341 // If the element is set to some value, or if we are resolving a reference
1342 // to a specific variable and that variable is explicitly unset, then
1343 // replace the VarListElementInit with it.
1344 if (IRV || !isa<UnsetInit>(E))
1350 RecTy *VarInit::getFieldType(const std::string &FieldName) const {
1351 if (RecordRecTy *RTy = dyn_cast<RecordRecTy>(getType()))
1352 if (const RecordVal *RV = RTy->getRecord()->getValue(FieldName))
1353 return RV->getType();
1357 Init *VarInit::getFieldInit(Record &R, const RecordVal *RV,
1358 const std::string &FieldName) const {
1359 if (isa<RecordRecTy>(getType()))
1360 if (const RecordVal *Val = R.getValue(VarName)) {
1361 if (RV != Val && (RV || isa<UnsetInit>(Val->getValue())))
1363 Init *TheInit = Val->getValue();
1364 assert(TheInit != this && "Infinite loop detected!");
1365 if (Init *I = TheInit->getFieldInit(R, RV, FieldName))
1373 /// resolveReferences - This method is used by classes that refer to other
1374 /// variables which may not be defined at the time the expression is formed.
1375 /// If a value is set for the variable later, this method will be called on
1376 /// users of the value to allow the value to propagate out.
1378 Init *VarInit::resolveReferences(Record &R, const RecordVal *RV) const {
1379 if (RecordVal *Val = R.getValue(VarName))
1380 if (RV == Val || (RV == 0 && !isa<UnsetInit>(Val->getValue())))
1381 return Val->getValue();
1382 return const_cast<VarInit *>(this);
1385 VarBitInit *VarBitInit::get(TypedInit *T, unsigned B) {
1386 typedef std::pair<TypedInit *, unsigned> Key;
1387 typedef DenseMap<Key, VarBitInit *> Pool;
1389 static Pool ThePool;
1391 Key TheKey(std::make_pair(T, B));
1393 VarBitInit *&I = ThePool[TheKey];
1394 if (!I) I = new VarBitInit(T, B);
1398 std::string VarBitInit::getAsString() const {
1399 return TI->getAsString() + "{" + utostr(Bit) + "}";
1402 Init *VarBitInit::resolveReferences(Record &R, const RecordVal *RV) const {
1403 Init *I = TI->resolveReferences(R, RV);
1405 return I->getBit(getBitNum());
1407 return const_cast<VarBitInit*>(this);
1410 VarListElementInit *VarListElementInit::get(TypedInit *T,
1412 typedef std::pair<TypedInit *, unsigned> Key;
1413 typedef DenseMap<Key, VarListElementInit *> Pool;
1415 static Pool ThePool;
1417 Key TheKey(std::make_pair(T, E));
1419 VarListElementInit *&I = ThePool[TheKey];
1420 if (!I) I = new VarListElementInit(T, E);
1424 std::string VarListElementInit::getAsString() const {
1425 return TI->getAsString() + "[" + utostr(Element) + "]";
1429 VarListElementInit::resolveReferences(Record &R, const RecordVal *RV) const {
1430 if (Init *I = getVariable()->resolveListElementReference(R, RV,
1433 return const_cast<VarListElementInit *>(this);
1436 Init *VarListElementInit::getBit(unsigned Bit) const {
1437 if (getType() == BitRecTy::get())
1438 return const_cast<VarListElementInit*>(this);
1439 return VarBitInit::get(const_cast<VarListElementInit*>(this), Bit);
1442 Init *VarListElementInit:: resolveListElementReference(Record &R,
1443 const RecordVal *RV,
1444 unsigned Elt) const {
1445 Init *Result = TI->resolveListElementReference(R, RV, Element);
1448 if (TypedInit *TInit = dyn_cast<TypedInit>(Result)) {
1449 Init *Result2 = TInit->resolveListElementReference(R, RV, Elt);
1450 if (Result2) return Result2;
1451 return new VarListElementInit(TInit, Elt);
1459 DefInit *DefInit::get(Record *R) {
1460 return R->getDefInit();
1463 RecTy *DefInit::getFieldType(const std::string &FieldName) const {
1464 if (const RecordVal *RV = Def->getValue(FieldName))
1465 return RV->getType();
1469 Init *DefInit::getFieldInit(Record &R, const RecordVal *RV,
1470 const std::string &FieldName) const {
1471 return Def->getValue(FieldName)->getValue();
1475 std::string DefInit::getAsString() const {
1476 return Def->getName();
1479 FieldInit *FieldInit::get(Init *R, const std::string &FN) {
1480 typedef std::pair<Init *, TableGenStringKey> Key;
1481 typedef DenseMap<Key, FieldInit *> Pool;
1482 static Pool ThePool;
1484 Key TheKey(std::make_pair(R, FN));
1486 FieldInit *&I = ThePool[TheKey];
1487 if (!I) I = new FieldInit(R, FN);
1491 Init *FieldInit::getBit(unsigned Bit) const {
1492 if (getType() == BitRecTy::get())
1493 return const_cast<FieldInit*>(this);
1494 return VarBitInit::get(const_cast<FieldInit*>(this), Bit);
1497 Init *FieldInit::resolveListElementReference(Record &R, const RecordVal *RV,
1498 unsigned Elt) const {
1499 if (Init *ListVal = Rec->getFieldInit(R, RV, FieldName))
1500 if (ListInit *LI = dyn_cast<ListInit>(ListVal)) {
1501 if (Elt >= LI->getSize()) return 0;
1502 Init *E = LI->getElement(Elt);
1504 // If the element is set to some value, or if we are resolving a
1505 // reference to a specific variable and that variable is explicitly
1506 // unset, then replace the VarListElementInit with it.
1507 if (RV || !isa<UnsetInit>(E))
1513 Init *FieldInit::resolveReferences(Record &R, const RecordVal *RV) const {
1514 Init *NewRec = RV ? Rec->resolveReferences(R, RV) : Rec;
1516 Init *BitsVal = NewRec->getFieldInit(R, RV, FieldName);
1518 Init *BVR = BitsVal->resolveReferences(R, RV);
1519 return BVR->isComplete() ? BVR : const_cast<FieldInit *>(this);
1522 if (NewRec != Rec) {
1523 return FieldInit::get(NewRec, FieldName);
1525 return const_cast<FieldInit *>(this);
1528 static void ProfileDagInit(FoldingSetNodeID &ID, Init *V, const std::string &VN,
1529 ArrayRef<Init *> ArgRange,
1530 ArrayRef<std::string> NameRange) {
1534 ArrayRef<Init *>::iterator Arg = ArgRange.begin();
1535 ArrayRef<std::string>::iterator Name = NameRange.begin();
1536 while (Arg != ArgRange.end()) {
1537 assert(Name != NameRange.end() && "Arg name underflow!");
1538 ID.AddPointer(*Arg++);
1539 ID.AddString(*Name++);
1541 assert(Name == NameRange.end() && "Arg name overflow!");
1545 DagInit::get(Init *V, const std::string &VN,
1546 ArrayRef<Init *> ArgRange,
1547 ArrayRef<std::string> NameRange) {
1548 typedef FoldingSet<DagInit> Pool;
1549 static Pool ThePool;
1551 FoldingSetNodeID ID;
1552 ProfileDagInit(ID, V, VN, ArgRange, NameRange);
1555 if (DagInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
1558 DagInit *I = new DagInit(V, VN, ArgRange, NameRange);
1559 ThePool.InsertNode(I, IP);
1565 DagInit::get(Init *V, const std::string &VN,
1566 const std::vector<std::pair<Init*, std::string> > &args) {
1567 typedef std::pair<Init*, std::string> PairType;
1569 std::vector<Init *> Args;
1570 std::vector<std::string> Names;
1572 for (std::vector<PairType>::const_iterator i = args.begin(),
1576 Args.push_back(i->first);
1577 Names.push_back(i->second);
1580 return DagInit::get(V, VN, Args, Names);
1583 void DagInit::Profile(FoldingSetNodeID &ID) const {
1584 ProfileDagInit(ID, Val, ValName, Args, ArgNames);
1587 Init *DagInit::resolveReferences(Record &R, const RecordVal *RV) const {
1588 std::vector<Init*> NewArgs;
1589 for (unsigned i = 0, e = Args.size(); i != e; ++i)
1590 NewArgs.push_back(Args[i]->resolveReferences(R, RV));
1592 Init *Op = Val->resolveReferences(R, RV);
1594 if (Args != NewArgs || Op != Val)
1595 return DagInit::get(Op, ValName, NewArgs, ArgNames);
1597 return const_cast<DagInit *>(this);
1601 std::string DagInit::getAsString() const {
1602 std::string Result = "(" + Val->getAsString();
1603 if (!ValName.empty())
1604 Result += ":" + ValName;
1606 Result += " " + Args[0]->getAsString();
1607 if (!ArgNames[0].empty()) Result += ":$" + ArgNames[0];
1608 for (unsigned i = 1, e = Args.size(); i != e; ++i) {
1609 Result += ", " + Args[i]->getAsString();
1610 if (!ArgNames[i].empty()) Result += ":$" + ArgNames[i];
1613 return Result + ")";
1617 //===----------------------------------------------------------------------===//
1618 // Other implementations
1619 //===----------------------------------------------------------------------===//
1621 RecordVal::RecordVal(Init *N, RecTy *T, unsigned P)
1622 : Name(N), Ty(T), Prefix(P) {
1623 Value = Ty->convertValue(UnsetInit::get());
1624 assert(Value && "Cannot create unset value for current type!");
1627 RecordVal::RecordVal(const std::string &N, RecTy *T, unsigned P)
1628 : Name(StringInit::get(N)), Ty(T), Prefix(P) {
1629 Value = Ty->convertValue(UnsetInit::get());
1630 assert(Value && "Cannot create unset value for current type!");
1633 const std::string &RecordVal::getName() const {
1634 StringInit *NameString = dyn_cast<StringInit>(Name);
1635 assert(NameString && "RecordVal name is not a string!");
1636 return NameString->getValue();
1639 void RecordVal::dump() const { errs() << *this; }
1641 void RecordVal::print(raw_ostream &OS, bool PrintSem) const {
1642 if (getPrefix()) OS << "field ";
1643 OS << *getType() << " " << getNameInitAsString();
1646 OS << " = " << *getValue();
1648 if (PrintSem) OS << ";\n";
1651 unsigned Record::LastID = 0;
1653 void Record::init() {
1656 // Every record potentially has a def at the top. This value is
1657 // replaced with the top-level def name at instantiation time.
1658 RecordVal DN("NAME", StringRecTy::get(), 0);
1662 void Record::checkName() {
1663 // Ensure the record name has string type.
1664 const TypedInit *TypedName = dyn_cast<const TypedInit>(Name);
1665 assert(TypedName && "Record name is not typed!");
1666 RecTy *Type = TypedName->getType();
1667 if (!isa<StringRecTy>(Type))
1668 PrintFatalError(getLoc(), "Record name is not a string!");
1671 DefInit *Record::getDefInit() {
1673 TheInit = new DefInit(this, new RecordRecTy(this));
1677 const std::string &Record::getName() const {
1678 const StringInit *NameString = dyn_cast<StringInit>(Name);
1679 assert(NameString && "Record name is not a string!");
1680 return NameString->getValue();
1683 void Record::setName(Init *NewName) {
1684 if (TrackedRecords.getDef(Name->getAsUnquotedString()) == this) {
1685 TrackedRecords.removeDef(Name->getAsUnquotedString());
1686 TrackedRecords.addDef(this);
1687 } else if (TrackedRecords.getClass(Name->getAsUnquotedString()) == this) {
1688 TrackedRecords.removeClass(Name->getAsUnquotedString());
1689 TrackedRecords.addClass(this);
1690 } // Otherwise this isn't yet registered.
1693 // DO NOT resolve record values to the name at this point because
1694 // there might be default values for arguments of this def. Those
1695 // arguments might not have been resolved yet so we don't want to
1696 // prematurely assume values for those arguments were not passed to
1699 // Nonetheless, it may be that some of this Record's values
1700 // reference the record name. Indeed, the reason for having the
1701 // record name be an Init is to provide this flexibility. The extra
1702 // resolve steps after completely instantiating defs takes care of
1703 // this. See TGParser::ParseDef and TGParser::ParseDefm.
1706 void Record::setName(const std::string &Name) {
1707 setName(StringInit::get(Name));
1710 /// resolveReferencesTo - If anything in this record refers to RV, replace the
1711 /// reference to RV with the RHS of RV. If RV is null, we resolve all possible
1713 void Record::resolveReferencesTo(const RecordVal *RV) {
1714 for (unsigned i = 0, e = Values.size(); i != e; ++i) {
1715 if (RV == &Values[i]) // Skip resolve the same field as the given one
1717 if (Init *V = Values[i].getValue())
1718 if (Values[i].setValue(V->resolveReferences(*this, RV)))
1719 PrintFatalError(getLoc(), "Invalid value is found when setting '"
1720 + Values[i].getNameInitAsString()
1721 + "' after resolving references"
1722 + (RV ? " against '" + RV->getNameInitAsString()
1724 + RV->getValue()->getAsUnquotedString() + ")"
1728 Init *OldName = getNameInit();
1729 Init *NewName = Name->resolveReferences(*this, RV);
1730 if (NewName != OldName) {
1731 // Re-register with RecordKeeper.
1736 void Record::dump() const { errs() << *this; }
1738 raw_ostream &llvm::operator<<(raw_ostream &OS, const Record &R) {
1739 OS << R.getNameInitAsString();
1741 const std::vector<Init *> &TArgs = R.getTemplateArgs();
1742 if (!TArgs.empty()) {
1744 for (unsigned i = 0, e = TArgs.size(); i != e; ++i) {
1746 const RecordVal *RV = R.getValue(TArgs[i]);
1747 assert(RV && "Template argument record not found??");
1748 RV->print(OS, false);
1754 const std::vector<Record*> &SC = R.getSuperClasses();
1757 for (unsigned i = 0, e = SC.size(); i != e; ++i)
1758 OS << " " << SC[i]->getNameInitAsString();
1762 const std::vector<RecordVal> &Vals = R.getValues();
1763 for (unsigned i = 0, e = Vals.size(); i != e; ++i)
1764 if (Vals[i].getPrefix() && !R.isTemplateArg(Vals[i].getName()))
1766 for (unsigned i = 0, e = Vals.size(); i != e; ++i)
1767 if (!Vals[i].getPrefix() && !R.isTemplateArg(Vals[i].getName()))
1773 /// getValueInit - Return the initializer for a value with the specified name,
1774 /// or abort if the field does not exist.
1776 Init *Record::getValueInit(StringRef FieldName) const {
1777 const RecordVal *R = getValue(FieldName);
1778 if (R == 0 || R->getValue() == 0)
1779 PrintFatalError(getLoc(), "Record `" + getName() +
1780 "' does not have a field named `" + FieldName.str() + "'!\n");
1781 return R->getValue();
1785 /// getValueAsString - This method looks up the specified field and returns its
1786 /// value as a string, aborts if the field does not exist or if
1787 /// the value is not a string.
1789 std::string Record::getValueAsString(StringRef FieldName) const {
1790 const RecordVal *R = getValue(FieldName);
1791 if (R == 0 || R->getValue() == 0)
1792 PrintFatalError(getLoc(), "Record `" + getName() +
1793 "' does not have a field named `" + FieldName.str() + "'!\n");
1795 if (StringInit *SI = dyn_cast<StringInit>(R->getValue()))
1796 return SI->getValue();
1797 PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
1798 FieldName.str() + "' does not have a string initializer!");
1801 /// getValueAsBitsInit - This method looks up the specified field and returns
1802 /// its value as a BitsInit, aborts if the field does not exist or if
1803 /// the value is not the right type.
1805 BitsInit *Record::getValueAsBitsInit(StringRef FieldName) const {
1806 const RecordVal *R = getValue(FieldName);
1807 if (R == 0 || R->getValue() == 0)
1808 PrintFatalError(getLoc(), "Record `" + getName() +
1809 "' does not have a field named `" + FieldName.str() + "'!\n");
1811 if (BitsInit *BI = dyn_cast<BitsInit>(R->getValue()))
1813 PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
1814 FieldName.str() + "' does not have a BitsInit initializer!");
1817 /// getValueAsListInit - This method looks up the specified field and returns
1818 /// its value as a ListInit, aborting if the field does not exist or if
1819 /// the value is not the right type.
1821 ListInit *Record::getValueAsListInit(StringRef FieldName) const {
1822 const RecordVal *R = getValue(FieldName);
1823 if (R == 0 || R->getValue() == 0)
1824 PrintFatalError(getLoc(), "Record `" + getName() +
1825 "' does not have a field named `" + FieldName.str() + "'!\n");
1827 if (ListInit *LI = dyn_cast<ListInit>(R->getValue()))
1829 PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
1830 FieldName.str() + "' does not have a list initializer!");
1833 /// getValueAsListOfDefs - This method looks up the specified field and returns
1834 /// its value as a vector of records, aborting if the field does not exist
1835 /// or if the value is not the right type.
1837 std::vector<Record*>
1838 Record::getValueAsListOfDefs(StringRef FieldName) const {
1839 ListInit *List = getValueAsListInit(FieldName);
1840 std::vector<Record*> Defs;
1841 for (unsigned i = 0; i < List->getSize(); i++) {
1842 if (DefInit *DI = dyn_cast<DefInit>(List->getElement(i))) {
1843 Defs.push_back(DI->getDef());
1845 PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
1846 FieldName.str() + "' list is not entirely DefInit!");
1852 /// getValueAsInt - This method looks up the specified field and returns its
1853 /// value as an int64_t, aborting if the field does not exist or if the value
1854 /// is not the right type.
1856 int64_t Record::getValueAsInt(StringRef FieldName) const {
1857 const RecordVal *R = getValue(FieldName);
1858 if (R == 0 || R->getValue() == 0)
1859 PrintFatalError(getLoc(), "Record `" + getName() +
1860 "' does not have a field named `" + FieldName.str() + "'!\n");
1862 if (IntInit *II = dyn_cast<IntInit>(R->getValue()))
1863 return II->getValue();
1864 PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
1865 FieldName.str() + "' does not have an int initializer!");
1868 /// getValueAsListOfInts - This method looks up the specified field and returns
1869 /// its value as a vector of integers, aborting if the field does not exist or
1870 /// if the value is not the right type.
1872 std::vector<int64_t>
1873 Record::getValueAsListOfInts(StringRef FieldName) const {
1874 ListInit *List = getValueAsListInit(FieldName);
1875 std::vector<int64_t> Ints;
1876 for (unsigned i = 0; i < List->getSize(); i++) {
1877 if (IntInit *II = dyn_cast<IntInit>(List->getElement(i))) {
1878 Ints.push_back(II->getValue());
1880 PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
1881 FieldName.str() + "' does not have a list of ints initializer!");
1887 /// getValueAsListOfStrings - This method looks up the specified field and
1888 /// returns its value as a vector of strings, aborting if the field does not
1889 /// exist or if the value is not the right type.
1891 std::vector<std::string>
1892 Record::getValueAsListOfStrings(StringRef FieldName) const {
1893 ListInit *List = getValueAsListInit(FieldName);
1894 std::vector<std::string> Strings;
1895 for (unsigned i = 0; i < List->getSize(); i++) {
1896 if (StringInit *II = dyn_cast<StringInit>(List->getElement(i))) {
1897 Strings.push_back(II->getValue());
1899 PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
1900 FieldName.str() + "' does not have a list of strings initializer!");
1906 /// getValueAsDef - This method looks up the specified field and returns its
1907 /// value as a Record, aborting if the field does not exist or if the value
1908 /// is not the right type.
1910 Record *Record::getValueAsDef(StringRef FieldName) const {
1911 const RecordVal *R = getValue(FieldName);
1912 if (R == 0 || R->getValue() == 0)
1913 PrintFatalError(getLoc(), "Record `" + getName() +
1914 "' does not have a field named `" + FieldName.str() + "'!\n");
1916 if (DefInit *DI = dyn_cast<DefInit>(R->getValue()))
1917 return DI->getDef();
1918 PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
1919 FieldName.str() + "' does not have a def initializer!");
1922 /// getValueAsBit - This method looks up the specified field and returns its
1923 /// value as a bit, aborting if the field does not exist or if the value is
1924 /// not the right type.
1926 bool Record::getValueAsBit(StringRef FieldName) const {
1927 const RecordVal *R = getValue(FieldName);
1928 if (R == 0 || R->getValue() == 0)
1929 PrintFatalError(getLoc(), "Record `" + getName() +
1930 "' does not have a field named `" + FieldName.str() + "'!\n");
1932 if (BitInit *BI = dyn_cast<BitInit>(R->getValue()))
1933 return BI->getValue();
1934 PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
1935 FieldName.str() + "' does not have a bit initializer!");
1938 bool Record::getValueAsBitOrUnset(StringRef FieldName, bool &Unset) const {
1939 const RecordVal *R = getValue(FieldName);
1940 if (R == 0 || R->getValue() == 0)
1941 PrintFatalError(getLoc(), "Record `" + getName() +
1942 "' does not have a field named `" + FieldName.str() + "'!\n");
1944 if (R->getValue() == UnsetInit::get()) {
1949 if (BitInit *BI = dyn_cast<BitInit>(R->getValue()))
1950 return BI->getValue();
1951 PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
1952 FieldName.str() + "' does not have a bit initializer!");
1955 /// getValueAsDag - This method looks up the specified field and returns its
1956 /// value as an Dag, aborting if the field does not exist or if the value is
1957 /// not the right type.
1959 DagInit *Record::getValueAsDag(StringRef FieldName) const {
1960 const RecordVal *R = getValue(FieldName);
1961 if (R == 0 || R->getValue() == 0)
1962 PrintFatalError(getLoc(), "Record `" + getName() +
1963 "' does not have a field named `" + FieldName.str() + "'!\n");
1965 if (DagInit *DI = dyn_cast<DagInit>(R->getValue()))
1967 PrintFatalError(getLoc(), "Record `" + getName() + "', field `" +
1968 FieldName.str() + "' does not have a dag initializer!");
1972 void MultiClass::dump() const {
1973 errs() << "Record:\n";
1976 errs() << "Defs:\n";
1977 for (RecordVector::const_iterator r = DefPrototypes.begin(),
1978 rend = DefPrototypes.end();
1986 void RecordKeeper::dump() const { errs() << *this; }
1988 raw_ostream &llvm::operator<<(raw_ostream &OS, const RecordKeeper &RK) {
1989 OS << "------------- Classes -----------------\n";
1990 const std::map<std::string, Record*> &Classes = RK.getClasses();
1991 for (std::map<std::string, Record*>::const_iterator I = Classes.begin(),
1992 E = Classes.end(); I != E; ++I)
1993 OS << "class " << *I->second;
1995 OS << "------------- Defs -----------------\n";
1996 const std::map<std::string, Record*> &Defs = RK.getDefs();
1997 for (std::map<std::string, Record*>::const_iterator I = Defs.begin(),
1998 E = Defs.end(); I != E; ++I)
1999 OS << "def " << *I->second;
2004 /// getAllDerivedDefinitions - This method returns all concrete definitions
2005 /// that derive from the specified class name. If a class with the specified
2006 /// name does not exist, an error is printed and true is returned.
2007 std::vector<Record*>
2008 RecordKeeper::getAllDerivedDefinitions(const std::string &ClassName) const {
2009 Record *Class = getClass(ClassName);
2011 PrintFatalError("ERROR: Couldn't find the `" + ClassName + "' class!\n");
2013 std::vector<Record*> Defs;
2014 for (std::map<std::string, Record*>::const_iterator I = getDefs().begin(),
2015 E = getDefs().end(); I != E; ++I)
2016 if (I->second->isSubClassOf(Class))
2017 Defs.push_back(I->second);
2022 /// QualifyName - Return an Init with a qualifier prefix referring
2023 /// to CurRec's name.
2024 Init *llvm::QualifyName(Record &CurRec, MultiClass *CurMultiClass,
2025 Init *Name, const std::string &Scoper) {
2026 RecTy *Type = dyn_cast<TypedInit>(Name)->getType();
2028 BinOpInit *NewName =
2029 BinOpInit::get(BinOpInit::STRCONCAT,
2030 BinOpInit::get(BinOpInit::STRCONCAT,
2031 CurRec.getNameInit(),
2032 StringInit::get(Scoper),
2033 Type)->Fold(&CurRec, CurMultiClass),
2037 if (CurMultiClass && Scoper != "::") {
2039 BinOpInit::get(BinOpInit::STRCONCAT,
2040 BinOpInit::get(BinOpInit::STRCONCAT,
2041 CurMultiClass->Rec.getNameInit(),
2042 StringInit::get("::"),
2043 Type)->Fold(&CurRec, CurMultiClass),
2044 NewName->Fold(&CurRec, CurMultiClass),
2048 return NewName->Fold(&CurRec, CurMultiClass);
2051 /// QualifyName - Return an Init with a qualifier prefix referring
2052 /// to CurRec's name.
2053 Init *llvm::QualifyName(Record &CurRec, MultiClass *CurMultiClass,
2054 const std::string &Name,
2055 const std::string &Scoper) {
2056 return QualifyName(CurRec, CurMultiClass, StringInit::get(Name), Scoper);