Move TableGen's parser and entry point into a library
This is the first step towards splitting LLVM and Clang's tblgen executables.
llvm-svn: 140951
diff --git a/llvm/lib/TableGen/Record.cpp b/llvm/lib/TableGen/Record.cpp
new file mode 100644
index 0000000..b427797
--- /dev/null
+++ b/llvm/lib/TableGen/Record.cpp
@@ -0,0 +1,2009 @@
+//===- Record.cpp - Record implementation ---------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Implement the tablegen record classes.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/TableGen/Record.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/Support/DataTypes.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/Format.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/FoldingSet.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/StringMap.h"
+
+using namespace llvm;
+
+//===----------------------------------------------------------------------===//
+// std::string wrapper for DenseMap purposes
+//===----------------------------------------------------------------------===//
+
+/// TableGenStringKey - This is a wrapper for std::string suitable for
+/// using as a key to a DenseMap. Because there isn't a particularly
+/// good way to indicate tombstone or empty keys for strings, we want
+/// to wrap std::string to indicate that this is a "special" string
+/// not expected to take on certain values (those of the tombstone and
+/// empty keys). This makes things a little safer as it clarifies
+/// that DenseMap is really not appropriate for general strings.
+
+class TableGenStringKey {
+public:
+ TableGenStringKey(const std::string &str) : data(str) {}
+ TableGenStringKey(const char *str) : data(str) {}
+
+ const std::string &str() const { return data; }
+
+private:
+ std::string data;
+};
+
+/// Specialize DenseMapInfo for TableGenStringKey.
+namespace llvm {
+
+template<> struct DenseMapInfo<TableGenStringKey> {
+ static inline TableGenStringKey getEmptyKey() {
+ TableGenStringKey Empty("<<<EMPTY KEY>>>");
+ return Empty;
+ }
+ static inline TableGenStringKey getTombstoneKey() {
+ TableGenStringKey Tombstone("<<<TOMBSTONE KEY>>>");
+ return Tombstone;
+ }
+ static unsigned getHashValue(const TableGenStringKey& Val) {
+ return HashString(Val.str());
+ }
+ static bool isEqual(const TableGenStringKey& LHS,
+ const TableGenStringKey& RHS) {
+ return LHS.str() == RHS.str();
+ }
+};
+
+}
+
+//===----------------------------------------------------------------------===//
+// Type implementations
+//===----------------------------------------------------------------------===//
+
+BitRecTy BitRecTy::Shared;
+IntRecTy IntRecTy::Shared;
+StringRecTy StringRecTy::Shared;
+CodeRecTy CodeRecTy::Shared;
+DagRecTy DagRecTy::Shared;
+
+void RecTy::dump() const { print(errs()); }
+
+ListRecTy *RecTy::getListTy() {
+ if (!ListTy)
+ ListTy = new ListRecTy(this);
+ return ListTy;
+}
+
+Init *BitRecTy::convertValue(BitsInit *BI) {
+ if (BI->getNumBits() != 1) return 0; // Only accept if just one bit!
+ return BI->getBit(0);
+}
+
+bool BitRecTy::baseClassOf(const BitsRecTy *RHS) const {
+ return RHS->getNumBits() == 1;
+}
+
+Init *BitRecTy::convertValue(IntInit *II) {
+ int64_t Val = II->getValue();
+ if (Val != 0 && Val != 1) return 0; // Only accept 0 or 1 for a bit!
+
+ return BitInit::get(Val != 0);
+}
+
+Init *BitRecTy::convertValue(TypedInit *VI) {
+ if (dynamic_cast<BitRecTy*>(VI->getType()))
+ return VI; // Accept variable if it is already of bit type!
+ return 0;
+}
+
+BitsRecTy *BitsRecTy::get(unsigned Sz) {
+ static std::vector<BitsRecTy*> Shared;
+ if (Sz >= Shared.size())
+ Shared.resize(Sz + 1);
+ BitsRecTy *&Ty = Shared[Sz];
+ if (!Ty)
+ Ty = new BitsRecTy(Sz);
+ return Ty;
+}
+
+std::string BitsRecTy::getAsString() const {
+ return "bits<" + utostr(Size) + ">";
+}
+
+Init *BitsRecTy::convertValue(UnsetInit *UI) {
+ SmallVector<Init *, 16> NewBits(Size);
+
+ for (unsigned i = 0; i != Size; ++i)
+ NewBits[i] = UnsetInit::get();
+
+ return BitsInit::get(NewBits);
+}
+
+Init *BitsRecTy::convertValue(BitInit *UI) {
+ if (Size != 1) return 0; // Can only convert single bit.
+ return BitsInit::get(UI);
+}
+
+/// canFitInBitfield - Return true if the number of bits is large enough to hold
+/// the integer value.
+static bool canFitInBitfield(int64_t Value, unsigned NumBits) {
+ // For example, with NumBits == 4, we permit Values from [-7 .. 15].
+ return (NumBits >= sizeof(Value) * 8) ||
+ (Value >> NumBits == 0) || (Value >> (NumBits-1) == -1);
+}
+
+/// convertValue from Int initializer to bits type: Split the integer up into the
+/// appropriate bits.
+///
+Init *BitsRecTy::convertValue(IntInit *II) {
+ int64_t Value = II->getValue();
+ // Make sure this bitfield is large enough to hold the integer value.
+ if (!canFitInBitfield(Value, Size))
+ return 0;
+
+ SmallVector<Init *, 16> NewBits(Size);
+
+ for (unsigned i = 0; i != Size; ++i)
+ NewBits[i] = BitInit::get(Value & (1LL << i));
+
+ return BitsInit::get(NewBits);
+}
+
+Init *BitsRecTy::convertValue(BitsInit *BI) {
+ // If the number of bits is right, return it. Otherwise we need to expand or
+ // truncate.
+ if (BI->getNumBits() == Size) return BI;
+ return 0;
+}
+
+Init *BitsRecTy::convertValue(TypedInit *VI) {
+ if (BitsRecTy *BRT = dynamic_cast<BitsRecTy*>(VI->getType()))
+ if (BRT->Size == Size) {
+ SmallVector<Init *, 16> NewBits(Size);
+
+ for (unsigned i = 0; i != Size; ++i)
+ NewBits[i] = VarBitInit::get(VI, i);
+ return BitsInit::get(NewBits);
+ }
+
+ if (Size == 1 && dynamic_cast<BitRecTy*>(VI->getType()))
+ return BitsInit::get(VI);
+
+ if (TernOpInit *Tern = dynamic_cast<TernOpInit*>(VI)) {
+ if (Tern->getOpcode() == TernOpInit::IF) {
+ Init *LHS = Tern->getLHS();
+ Init *MHS = Tern->getMHS();
+ Init *RHS = Tern->getRHS();
+
+ IntInit *MHSi = dynamic_cast<IntInit*>(MHS);
+ IntInit *RHSi = dynamic_cast<IntInit*>(RHS);
+
+ if (MHSi && RHSi) {
+ int64_t MHSVal = MHSi->getValue();
+ int64_t RHSVal = RHSi->getValue();
+
+ if (canFitInBitfield(MHSVal, Size) && canFitInBitfield(RHSVal, Size)) {
+ SmallVector<Init *, 16> NewBits(Size);
+
+ for (unsigned i = 0; i != Size; ++i)
+ NewBits[i] =
+ TernOpInit::get(TernOpInit::IF, LHS,
+ IntInit::get((MHSVal & (1LL << i)) ? 1 : 0),
+ IntInit::get((RHSVal & (1LL << i)) ? 1 : 0),
+ VI->getType());
+
+ return BitsInit::get(NewBits);
+ }
+ } else {
+ BitsInit *MHSbs = dynamic_cast<BitsInit*>(MHS);
+ BitsInit *RHSbs = dynamic_cast<BitsInit*>(RHS);
+
+ if (MHSbs && RHSbs) {
+ SmallVector<Init *, 16> NewBits(Size);
+
+ for (unsigned i = 0; i != Size; ++i)
+ NewBits[i] = TernOpInit::get(TernOpInit::IF, LHS,
+ MHSbs->getBit(i),
+ RHSbs->getBit(i),
+ VI->getType());
+
+ return BitsInit::get(NewBits);
+ }
+ }
+ }
+ }
+
+ return 0;
+}
+
+Init *IntRecTy::convertValue(BitInit *BI) {
+ return IntInit::get(BI->getValue());
+}
+
+Init *IntRecTy::convertValue(BitsInit *BI) {
+ int64_t Result = 0;
+ for (unsigned i = 0, e = BI->getNumBits(); i != e; ++i)
+ if (BitInit *Bit = dynamic_cast<BitInit*>(BI->getBit(i))) {
+ Result |= Bit->getValue() << i;
+ } else {
+ return 0;
+ }
+ return IntInit::get(Result);
+}
+
+Init *IntRecTy::convertValue(TypedInit *TI) {
+ if (TI->getType()->typeIsConvertibleTo(this))
+ return TI; // Accept variable if already of the right type!
+ return 0;
+}
+
+Init *StringRecTy::convertValue(UnOpInit *BO) {
+ if (BO->getOpcode() == UnOpInit::CAST) {
+ Init *L = BO->getOperand()->convertInitializerTo(this);
+ if (L == 0) return 0;
+ if (L != BO->getOperand())
+ return UnOpInit::get(UnOpInit::CAST, L, new StringRecTy);
+ return BO;
+ }
+
+ return convertValue((TypedInit*)BO);
+}
+
+Init *StringRecTy::convertValue(BinOpInit *BO) {
+ if (BO->getOpcode() == BinOpInit::STRCONCAT) {
+ Init *L = BO->getLHS()->convertInitializerTo(this);
+ Init *R = BO->getRHS()->convertInitializerTo(this);
+ if (L == 0 || R == 0) return 0;
+ if (L != BO->getLHS() || R != BO->getRHS())
+ return BinOpInit::get(BinOpInit::STRCONCAT, L, R, new StringRecTy);
+ return BO;
+ }
+
+ return convertValue((TypedInit*)BO);
+}
+
+
+Init *StringRecTy::convertValue(TypedInit *TI) {
+ if (dynamic_cast<StringRecTy*>(TI->getType()))
+ return TI; // Accept variable if already of the right type!
+ return 0;
+}
+
+std::string ListRecTy::getAsString() const {
+ return "list<" + Ty->getAsString() + ">";
+}
+
+Init *ListRecTy::convertValue(ListInit *LI) {
+ std::vector<Init*> Elements;
+
+ // Verify that all of the elements of the list are subclasses of the
+ // appropriate class!
+ for (unsigned i = 0, e = LI->getSize(); i != e; ++i)
+ if (Init *CI = LI->getElement(i)->convertInitializerTo(Ty))
+ Elements.push_back(CI);
+ else
+ return 0;
+
+ ListRecTy *LType = dynamic_cast<ListRecTy*>(LI->getType());
+ if (LType == 0) {
+ return 0;
+ }
+
+ return ListInit::get(Elements, this);
+}
+
+Init *ListRecTy::convertValue(TypedInit *TI) {
+ // Ensure that TI is compatible with our class.
+ if (ListRecTy *LRT = dynamic_cast<ListRecTy*>(TI->getType()))
+ if (LRT->getElementType()->typeIsConvertibleTo(getElementType()))
+ return TI;
+ return 0;
+}
+
+Init *CodeRecTy::convertValue(TypedInit *TI) {
+ if (TI->getType()->typeIsConvertibleTo(this))
+ return TI;
+ return 0;
+}
+
+Init *DagRecTy::convertValue(TypedInit *TI) {
+ if (TI->getType()->typeIsConvertibleTo(this))
+ return TI;
+ return 0;
+}
+
+Init *DagRecTy::convertValue(UnOpInit *BO) {
+ if (BO->getOpcode() == UnOpInit::CAST) {
+ Init *L = BO->getOperand()->convertInitializerTo(this);
+ if (L == 0) return 0;
+ if (L != BO->getOperand())
+ return UnOpInit::get(UnOpInit::CAST, L, new DagRecTy);
+ return BO;
+ }
+ return 0;
+}
+
+Init *DagRecTy::convertValue(BinOpInit *BO) {
+ if (BO->getOpcode() == BinOpInit::CONCAT) {
+ Init *L = BO->getLHS()->convertInitializerTo(this);
+ Init *R = BO->getRHS()->convertInitializerTo(this);
+ if (L == 0 || R == 0) return 0;
+ if (L != BO->getLHS() || R != BO->getRHS())
+ return BinOpInit::get(BinOpInit::CONCAT, L, R, new DagRecTy);
+ return BO;
+ }
+ return 0;
+}
+
+RecordRecTy *RecordRecTy::get(Record *R) {
+ return &dynamic_cast<RecordRecTy&>(*R->getDefInit()->getType());
+}
+
+std::string RecordRecTy::getAsString() const {
+ return Rec->getName();
+}
+
+Init *RecordRecTy::convertValue(DefInit *DI) {
+ // Ensure that DI is a subclass of Rec.
+ if (!DI->getDef()->isSubClassOf(Rec))
+ return 0;
+ return DI;
+}
+
+Init *RecordRecTy::convertValue(TypedInit *TI) {
+ // Ensure that TI is compatible with Rec.
+ if (RecordRecTy *RRT = dynamic_cast<RecordRecTy*>(TI->getType()))
+ if (RRT->getRecord()->isSubClassOf(getRecord()) ||
+ RRT->getRecord() == getRecord())
+ return TI;
+ return 0;
+}
+
+bool RecordRecTy::baseClassOf(const RecordRecTy *RHS) const {
+ if (Rec == RHS->getRecord() || RHS->getRecord()->isSubClassOf(Rec))
+ return true;
+
+ const std::vector<Record*> &SC = Rec->getSuperClasses();
+ for (unsigned i = 0, e = SC.size(); i != e; ++i)
+ if (RHS->getRecord()->isSubClassOf(SC[i]))
+ return true;
+
+ return false;
+}
+
+
+/// resolveTypes - Find a common type that T1 and T2 convert to.
+/// Return 0 if no such type exists.
+///
+RecTy *llvm::resolveTypes(RecTy *T1, RecTy *T2) {
+ if (!T1->typeIsConvertibleTo(T2)) {
+ if (!T2->typeIsConvertibleTo(T1)) {
+ // If one is a Record type, check superclasses
+ RecordRecTy *RecTy1 = dynamic_cast<RecordRecTy*>(T1);
+ if (RecTy1) {
+ // See if T2 inherits from a type T1 also inherits from
+ const std::vector<Record *> &T1SuperClasses =
+ RecTy1->getRecord()->getSuperClasses();
+ for(std::vector<Record *>::const_iterator i = T1SuperClasses.begin(),
+ iend = T1SuperClasses.end();
+ i != iend;
+ ++i) {
+ RecordRecTy *SuperRecTy1 = RecordRecTy::get(*i);
+ RecTy *NewType1 = resolveTypes(SuperRecTy1, T2);
+ if (NewType1 != 0) {
+ if (NewType1 != SuperRecTy1) {
+ delete SuperRecTy1;
+ }
+ return NewType1;
+ }
+ }
+ }
+ RecordRecTy *RecTy2 = dynamic_cast<RecordRecTy*>(T2);
+ if (RecTy2) {
+ // See if T1 inherits from a type T2 also inherits from
+ const std::vector<Record *> &T2SuperClasses =
+ RecTy2->getRecord()->getSuperClasses();
+ for (std::vector<Record *>::const_iterator i = T2SuperClasses.begin(),
+ iend = T2SuperClasses.end();
+ i != iend;
+ ++i) {
+ RecordRecTy *SuperRecTy2 = RecordRecTy::get(*i);
+ RecTy *NewType2 = resolveTypes(T1, SuperRecTy2);
+ if (NewType2 != 0) {
+ if (NewType2 != SuperRecTy2) {
+ delete SuperRecTy2;
+ }
+ return NewType2;
+ }
+ }
+ }
+ return 0;
+ }
+ return T2;
+ }
+ return T1;
+}
+
+
+//===----------------------------------------------------------------------===//
+// Initializer implementations
+//===----------------------------------------------------------------------===//
+
+void Init::dump() const { return print(errs()); }
+
+UnsetInit *UnsetInit::get() {
+ static UnsetInit TheInit;
+ return &TheInit;
+}
+
+BitInit *BitInit::get(bool V) {
+ static BitInit True(true);
+ static BitInit False(false);
+
+ return V ? &True : &False;
+}
+
+static void
+ProfileBitsInit(FoldingSetNodeID &ID, ArrayRef<Init *> Range) {
+ ID.AddInteger(Range.size());
+
+ for (ArrayRef<Init *>::iterator i = Range.begin(),
+ iend = Range.end();
+ i != iend;
+ ++i)
+ ID.AddPointer(*i);
+}
+
+BitsInit *BitsInit::get(ArrayRef<Init *> Range) {
+ typedef FoldingSet<BitsInit> Pool;
+ static Pool ThePool;
+
+ FoldingSetNodeID ID;
+ ProfileBitsInit(ID, Range);
+
+ void *IP = 0;
+ if (BitsInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
+ return I;
+
+ BitsInit *I = new BitsInit(Range);
+ ThePool.InsertNode(I, IP);
+
+ return I;
+}
+
+void BitsInit::Profile(FoldingSetNodeID &ID) const {
+ ProfileBitsInit(ID, Bits);
+}
+
+Init *
+BitsInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) const {
+ SmallVector<Init *, 16> NewBits(Bits.size());
+
+ for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
+ if (Bits[i] >= getNumBits())
+ return 0;
+ NewBits[i] = getBit(Bits[i]);
+ }
+ return BitsInit::get(NewBits);
+}
+
+std::string BitsInit::getAsString() const {
+ std::string Result = "{ ";
+ for (unsigned i = 0, e = getNumBits(); i != e; ++i) {
+ if (i) Result += ", ";
+ if (Init *Bit = getBit(e-i-1))
+ Result += Bit->getAsString();
+ else
+ Result += "*";
+ }
+ return Result + " }";
+}
+
+// resolveReferences - If there are any field references that refer to fields
+// that have been filled in, we can propagate the values now.
+//
+Init *BitsInit::resolveReferences(Record &R, const RecordVal *RV) const {
+ bool Changed = false;
+ SmallVector<Init *, 16> NewBits(getNumBits());
+
+ for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
+ Init *B;
+ Init *CurBit = getBit(i);
+
+ do {
+ B = CurBit;
+ CurBit = CurBit->resolveReferences(R, RV);
+ Changed |= B != CurBit;
+ } while (B != CurBit);
+ NewBits[i] = CurBit;
+ }
+
+ if (Changed)
+ return BitsInit::get(NewBits);
+
+ return const_cast<BitsInit *>(this);
+}
+
+IntInit *IntInit::get(int64_t V) {
+ typedef DenseMap<int64_t, IntInit *> Pool;
+ static Pool ThePool;
+
+ IntInit *&I = ThePool[V];
+ if (!I) I = new IntInit(V);
+ return I;
+}
+
+std::string IntInit::getAsString() const {
+ return itostr(Value);
+}
+
+Init *
+IntInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) const {
+ SmallVector<Init *, 16> NewBits(Bits.size());
+
+ for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
+ if (Bits[i] >= 64)
+ return 0;
+
+ NewBits[i] = BitInit::get(Value & (INT64_C(1) << Bits[i]));
+ }
+ return BitsInit::get(NewBits);
+}
+
+StringInit *StringInit::get(const std::string &V) {
+ typedef StringMap<StringInit *> Pool;
+ static Pool ThePool;
+
+ StringInit *&I = ThePool[V];
+ if (!I) I = new StringInit(V);
+ return I;
+}
+
+CodeInit *CodeInit::get(const std::string &V) {
+ typedef StringMap<CodeInit *> Pool;
+ static Pool ThePool;
+
+ CodeInit *&I = ThePool[V];
+ if (!I) I = new CodeInit(V);
+ return I;
+}
+
+static void ProfileListInit(FoldingSetNodeID &ID,
+ ArrayRef<Init *> Range,
+ RecTy *EltTy) {
+ ID.AddInteger(Range.size());
+ ID.AddPointer(EltTy);
+
+ for (ArrayRef<Init *>::iterator i = Range.begin(),
+ iend = Range.end();
+ i != iend;
+ ++i)
+ ID.AddPointer(*i);
+}
+
+ListInit *ListInit::get(ArrayRef<Init *> Range, RecTy *EltTy) {
+ typedef FoldingSet<ListInit> Pool;
+ static Pool ThePool;
+
+ // Just use the FoldingSetNodeID to compute a hash. Use a DenseMap
+ // for actual storage.
+ FoldingSetNodeID ID;
+ ProfileListInit(ID, Range, EltTy);
+
+ void *IP = 0;
+ if (ListInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
+ return I;
+
+ ListInit *I = new ListInit(Range, EltTy);
+ ThePool.InsertNode(I, IP);
+ return I;
+}
+
+void ListInit::Profile(FoldingSetNodeID &ID) const {
+ ListRecTy *ListType = dynamic_cast<ListRecTy *>(getType());
+ assert(ListType && "Bad type for ListInit!");
+ RecTy *EltTy = ListType->getElementType();
+
+ ProfileListInit(ID, Values, EltTy);
+}
+
+Init *
+ListInit::convertInitListSlice(const std::vector<unsigned> &Elements) const {
+ std::vector<Init*> Vals;
+ for (unsigned i = 0, e = Elements.size(); i != e; ++i) {
+ if (Elements[i] >= getSize())
+ return 0;
+ Vals.push_back(getElement(Elements[i]));
+ }
+ return ListInit::get(Vals, getType());
+}
+
+Record *ListInit::getElementAsRecord(unsigned i) const {
+ assert(i < Values.size() && "List element index out of range!");
+ DefInit *DI = dynamic_cast<DefInit*>(Values[i]);
+ if (DI == 0) throw "Expected record in list!";
+ return DI->getDef();
+}
+
+Init *ListInit::resolveReferences(Record &R, const RecordVal *RV) const {
+ std::vector<Init*> Resolved;
+ Resolved.reserve(getSize());
+ bool Changed = false;
+
+ for (unsigned i = 0, e = getSize(); i != e; ++i) {
+ Init *E;
+ Init *CurElt = getElement(i);
+
+ do {
+ E = CurElt;
+ CurElt = CurElt->resolveReferences(R, RV);
+ Changed |= E != CurElt;
+ } while (E != CurElt);
+ Resolved.push_back(E);
+ }
+
+ if (Changed)
+ return ListInit::get(Resolved, getType());
+ return const_cast<ListInit *>(this);
+}
+
+Init *ListInit::resolveListElementReference(Record &R, const RecordVal *IRV,
+ unsigned Elt) const {
+ if (Elt >= getSize())
+ return 0; // Out of range reference.
+ Init *E = getElement(Elt);
+ // If the element is set to some value, or if we are resolving a reference
+ // to a specific variable and that variable is explicitly unset, then
+ // replace the VarListElementInit with it.
+ if (IRV || !dynamic_cast<UnsetInit*>(E))
+ return E;
+ return 0;
+}
+
+std::string ListInit::getAsString() const {
+ std::string Result = "[";
+ for (unsigned i = 0, e = Values.size(); i != e; ++i) {
+ if (i) Result += ", ";
+ Result += Values[i]->getAsString();
+ }
+ return Result + "]";
+}
+
+Init *OpInit::resolveBitReference(Record &R, const RecordVal *IRV,
+ unsigned Bit) const {
+ Init *Folded = Fold(&R, 0);
+
+ if (Folded != this) {
+ TypedInit *Typed = dynamic_cast<TypedInit *>(Folded);
+ if (Typed) {
+ return Typed->resolveBitReference(R, IRV, Bit);
+ }
+ }
+
+ return 0;
+}
+
+Init *OpInit::resolveListElementReference(Record &R, const RecordVal *IRV,
+ unsigned Elt) const {
+ Init *Folded = Fold(&R, 0);
+
+ if (Folded != this) {
+ TypedInit *Typed = dynamic_cast<TypedInit *>(Folded);
+ if (Typed) {
+ return Typed->resolveListElementReference(R, IRV, Elt);
+ }
+ }
+
+ return 0;
+}
+
+UnOpInit *UnOpInit::get(UnaryOp opc, Init *lhs, RecTy *Type) {
+ typedef std::pair<std::pair<unsigned, Init *>, RecTy *> Key;
+
+ typedef DenseMap<Key, UnOpInit *> Pool;
+ static Pool ThePool;
+
+ Key TheKey(std::make_pair(std::make_pair(opc, lhs), Type));
+
+ UnOpInit *&I = ThePool[TheKey];
+ if (!I) I = new UnOpInit(opc, lhs, Type);
+ return I;
+}
+
+Init *UnOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) const {
+ switch (getOpcode()) {
+ default: assert(0 && "Unknown unop");
+ case CAST: {
+ if (getType()->getAsString() == "string") {
+ StringInit *LHSs = dynamic_cast<StringInit*>(LHS);
+ if (LHSs) {
+ return LHSs;
+ }
+
+ DefInit *LHSd = dynamic_cast<DefInit*>(LHS);
+ if (LHSd) {
+ return StringInit::get(LHSd->getDef()->getName());
+ }
+ } else {
+ StringInit *LHSs = dynamic_cast<StringInit*>(LHS);
+ if (LHSs) {
+ std::string Name = LHSs->getValue();
+
+ // From TGParser::ParseIDValue
+ if (CurRec) {
+ if (const RecordVal *RV = CurRec->getValue(Name)) {
+ if (RV->getType() != getType())
+ throw "type mismatch in cast";
+ return VarInit::get(Name, RV->getType());
+ }
+
+ std::string TemplateArgName = CurRec->getName()+":"+Name;
+ if (CurRec->isTemplateArg(TemplateArgName)) {
+ const RecordVal *RV = CurRec->getValue(TemplateArgName);
+ assert(RV && "Template arg doesn't exist??");
+
+ if (RV->getType() != getType())
+ throw "type mismatch in cast";
+
+ return VarInit::get(TemplateArgName, RV->getType());
+ }
+ }
+
+ if (CurMultiClass) {
+ std::string MCName = CurMultiClass->Rec.getName()+"::"+Name;
+ if (CurMultiClass->Rec.isTemplateArg(MCName)) {
+ const RecordVal *RV = CurMultiClass->Rec.getValue(MCName);
+ assert(RV && "Template arg doesn't exist??");
+
+ if (RV->getType() != getType())
+ throw "type mismatch in cast";
+
+ return VarInit::get(MCName, RV->getType());
+ }
+ }
+
+ if (Record *D = (CurRec->getRecords()).getDef(Name))
+ return DefInit::get(D);
+
+ throw TGError(CurRec->getLoc(), "Undefined reference:'" + Name + "'\n");
+ }
+ }
+ break;
+ }
+ case HEAD: {
+ ListInit *LHSl = dynamic_cast<ListInit*>(LHS);
+ if (LHSl) {
+ if (LHSl->getSize() == 0) {
+ assert(0 && "Empty list in car");
+ return 0;
+ }
+ return LHSl->getElement(0);
+ }
+ break;
+ }
+ case TAIL: {
+ ListInit *LHSl = dynamic_cast<ListInit*>(LHS);
+ if (LHSl) {
+ if (LHSl->getSize() == 0) {
+ assert(0 && "Empty list in cdr");
+ return 0;
+ }
+ // Note the +1. We can't just pass the result of getValues()
+ // directly.
+ ArrayRef<Init *>::iterator begin = LHSl->getValues().begin()+1;
+ ArrayRef<Init *>::iterator end = LHSl->getValues().end();
+ ListInit *Result =
+ ListInit::get(ArrayRef<Init *>(begin, end - begin),
+ LHSl->getType());
+ return Result;
+ }
+ break;
+ }
+ case EMPTY: {
+ ListInit *LHSl = dynamic_cast<ListInit*>(LHS);
+ if (LHSl) {
+ if (LHSl->getSize() == 0) {
+ return IntInit::get(1);
+ } else {
+ return IntInit::get(0);
+ }
+ }
+ StringInit *LHSs = dynamic_cast<StringInit*>(LHS);
+ if (LHSs) {
+ if (LHSs->getValue().empty()) {
+ return IntInit::get(1);
+ } else {
+ return IntInit::get(0);
+ }
+ }
+
+ break;
+ }
+ }
+ return const_cast<UnOpInit *>(this);
+}
+
+Init *UnOpInit::resolveReferences(Record &R, const RecordVal *RV) const {
+ Init *lhs = LHS->resolveReferences(R, RV);
+
+ if (LHS != lhs)
+ return (UnOpInit::get(getOpcode(), lhs, getType()))->Fold(&R, 0);
+ return Fold(&R, 0);
+}
+
+std::string UnOpInit::getAsString() const {
+ std::string Result;
+ switch (Opc) {
+ case CAST: Result = "!cast<" + getType()->getAsString() + ">"; break;
+ case HEAD: Result = "!head"; break;
+ case TAIL: Result = "!tail"; break;
+ case EMPTY: Result = "!empty"; break;
+ }
+ return Result + "(" + LHS->getAsString() + ")";
+}
+
+BinOpInit *BinOpInit::get(BinaryOp opc, Init *lhs,
+ Init *rhs, RecTy *Type) {
+ typedef std::pair<
+ std::pair<std::pair<unsigned, Init *>, Init *>,
+ RecTy *
+ > Key;
+
+ typedef DenseMap<Key, BinOpInit *> Pool;
+ static Pool ThePool;
+
+ Key TheKey(std::make_pair(std::make_pair(std::make_pair(opc, lhs), rhs),
+ Type));
+
+ BinOpInit *&I = ThePool[TheKey];
+ if (!I) I = new BinOpInit(opc, lhs, rhs, Type);
+ return I;
+}
+
+Init *BinOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) const {
+ switch (getOpcode()) {
+ default: assert(0 && "Unknown binop");
+ case CONCAT: {
+ DagInit *LHSs = dynamic_cast<DagInit*>(LHS);
+ DagInit *RHSs = dynamic_cast<DagInit*>(RHS);
+ if (LHSs && RHSs) {
+ DefInit *LOp = dynamic_cast<DefInit*>(LHSs->getOperator());
+ DefInit *ROp = dynamic_cast<DefInit*>(RHSs->getOperator());
+ if (LOp == 0 || ROp == 0 || LOp->getDef() != ROp->getDef())
+ throw "Concated Dag operators do not match!";
+ std::vector<Init*> Args;
+ std::vector<std::string> ArgNames;
+ for (unsigned i = 0, e = LHSs->getNumArgs(); i != e; ++i) {
+ Args.push_back(LHSs->getArg(i));
+ ArgNames.push_back(LHSs->getArgName(i));
+ }
+ for (unsigned i = 0, e = RHSs->getNumArgs(); i != e; ++i) {
+ Args.push_back(RHSs->getArg(i));
+ ArgNames.push_back(RHSs->getArgName(i));
+ }
+ return DagInit::get(LHSs->getOperator(), "", Args, ArgNames);
+ }
+ break;
+ }
+ case STRCONCAT: {
+ StringInit *LHSs = dynamic_cast<StringInit*>(LHS);
+ StringInit *RHSs = dynamic_cast<StringInit*>(RHS);
+ if (LHSs && RHSs)
+ return StringInit::get(LHSs->getValue() + RHSs->getValue());
+ break;
+ }
+ case EQ: {
+ // try to fold eq comparison for 'bit' and 'int', otherwise fallback
+ // to string objects.
+ IntInit* L =
+ dynamic_cast<IntInit*>(LHS->convertInitializerTo(IntRecTy::get()));
+ IntInit* R =
+ dynamic_cast<IntInit*>(RHS->convertInitializerTo(IntRecTy::get()));
+
+ if (L && R)
+ return IntInit::get(L->getValue() == R->getValue());
+
+ StringInit *LHSs = dynamic_cast<StringInit*>(LHS);
+ StringInit *RHSs = dynamic_cast<StringInit*>(RHS);
+
+ // Make sure we've resolved
+ if (LHSs && RHSs)
+ return IntInit::get(LHSs->getValue() == RHSs->getValue());
+
+ break;
+ }
+ case SHL:
+ case SRA:
+ case SRL: {
+ IntInit *LHSi = dynamic_cast<IntInit*>(LHS);
+ IntInit *RHSi = dynamic_cast<IntInit*>(RHS);
+ if (LHSi && RHSi) {
+ int64_t LHSv = LHSi->getValue(), RHSv = RHSi->getValue();
+ int64_t Result;
+ switch (getOpcode()) {
+ default: assert(0 && "Bad opcode!");
+ case SHL: Result = LHSv << RHSv; break;
+ case SRA: Result = LHSv >> RHSv; break;
+ case SRL: Result = (uint64_t)LHSv >> (uint64_t)RHSv; break;
+ }
+ return IntInit::get(Result);
+ }
+ break;
+ }
+ }
+ return const_cast<BinOpInit *>(this);
+}
+
+Init *BinOpInit::resolveReferences(Record &R, const RecordVal *RV) const {
+ Init *lhs = LHS->resolveReferences(R, RV);
+ Init *rhs = RHS->resolveReferences(R, RV);
+
+ if (LHS != lhs || RHS != rhs)
+ return (BinOpInit::get(getOpcode(), lhs, rhs, getType()))->Fold(&R, 0);
+ return Fold(&R, 0);
+}
+
+std::string BinOpInit::getAsString() const {
+ std::string Result;
+ switch (Opc) {
+ case CONCAT: Result = "!con"; break;
+ case SHL: Result = "!shl"; break;
+ case SRA: Result = "!sra"; break;
+ case SRL: Result = "!srl"; break;
+ case EQ: Result = "!eq"; break;
+ case STRCONCAT: Result = "!strconcat"; break;
+ }
+ return Result + "(" + LHS->getAsString() + ", " + RHS->getAsString() + ")";
+}
+
+TernOpInit *TernOpInit::get(TernaryOp opc, Init *lhs,
+ Init *mhs, Init *rhs,
+ RecTy *Type) {
+ typedef std::pair<
+ std::pair<
+ std::pair<std::pair<unsigned, RecTy *>, Init *>,
+ Init *
+ >,
+ Init *
+ > Key;
+
+ typedef DenseMap<Key, TernOpInit *> Pool;
+ static Pool ThePool;
+
+ Key TheKey(std::make_pair(std::make_pair(std::make_pair(std::make_pair(opc,
+ Type),
+ lhs),
+ mhs),
+ rhs));
+
+ TernOpInit *&I = ThePool[TheKey];
+ if (!I) I = new TernOpInit(opc, lhs, mhs, rhs, Type);
+ return I;
+}
+
+static Init *ForeachHelper(Init *LHS, Init *MHS, Init *RHS, RecTy *Type,
+ Record *CurRec, MultiClass *CurMultiClass);
+
+static Init *EvaluateOperation(OpInit *RHSo, Init *LHS, Init *Arg,
+ RecTy *Type, Record *CurRec,
+ MultiClass *CurMultiClass) {
+ std::vector<Init *> NewOperands;
+
+ TypedInit *TArg = dynamic_cast<TypedInit*>(Arg);
+
+ // If this is a dag, recurse
+ if (TArg && TArg->getType()->getAsString() == "dag") {
+ Init *Result = ForeachHelper(LHS, Arg, RHSo, Type,
+ CurRec, CurMultiClass);
+ if (Result != 0) {
+ return Result;
+ } else {
+ return 0;
+ }
+ }
+
+ for (int i = 0; i < RHSo->getNumOperands(); ++i) {
+ OpInit *RHSoo = dynamic_cast<OpInit*>(RHSo->getOperand(i));
+
+ if (RHSoo) {
+ Init *Result = EvaluateOperation(RHSoo, LHS, Arg,
+ Type, CurRec, CurMultiClass);
+ if (Result != 0) {
+ NewOperands.push_back(Result);
+ } else {
+ NewOperands.push_back(Arg);
+ }
+ } else if (LHS->getAsString() == RHSo->getOperand(i)->getAsString()) {
+ NewOperands.push_back(Arg);
+ } else {
+ NewOperands.push_back(RHSo->getOperand(i));
+ }
+ }
+
+ // Now run the operator and use its result as the new leaf
+ const OpInit *NewOp = RHSo->clone(NewOperands);
+ Init *NewVal = NewOp->Fold(CurRec, CurMultiClass);
+ if (NewVal != NewOp)
+ return NewVal;
+
+ return 0;
+}
+
+static Init *ForeachHelper(Init *LHS, Init *MHS, Init *RHS, RecTy *Type,
+ Record *CurRec, MultiClass *CurMultiClass) {
+ DagInit *MHSd = dynamic_cast<DagInit*>(MHS);
+ ListInit *MHSl = dynamic_cast<ListInit*>(MHS);
+
+ DagRecTy *DagType = dynamic_cast<DagRecTy*>(Type);
+ ListRecTy *ListType = dynamic_cast<ListRecTy*>(Type);
+
+ OpInit *RHSo = dynamic_cast<OpInit*>(RHS);
+
+ if (!RHSo) {
+ throw TGError(CurRec->getLoc(), "!foreach requires an operator\n");
+ }
+
+ TypedInit *LHSt = dynamic_cast<TypedInit*>(LHS);
+
+ if (!LHSt) {
+ throw TGError(CurRec->getLoc(), "!foreach requires typed variable\n");
+ }
+
+ if ((MHSd && DagType) || (MHSl && ListType)) {
+ if (MHSd) {
+ Init *Val = MHSd->getOperator();
+ Init *Result = EvaluateOperation(RHSo, LHS, Val,
+ Type, CurRec, CurMultiClass);
+ if (Result != 0) {
+ Val = Result;
+ }
+
+ std::vector<std::pair<Init *, std::string> > args;
+ for (unsigned int i = 0; i < MHSd->getNumArgs(); ++i) {
+ Init *Arg;
+ std::string ArgName;
+ Arg = MHSd->getArg(i);
+ ArgName = MHSd->getArgName(i);
+
+ // Process args
+ Init *Result = EvaluateOperation(RHSo, LHS, Arg, Type,
+ CurRec, CurMultiClass);
+ if (Result != 0) {
+ Arg = Result;
+ }
+
+ // TODO: Process arg names
+ args.push_back(std::make_pair(Arg, ArgName));
+ }
+
+ return DagInit::get(Val, "", args);
+ }
+ if (MHSl) {
+ std::vector<Init *> NewOperands;
+ std::vector<Init *> NewList(MHSl->begin(), MHSl->end());
+
+ for (std::vector<Init *>::iterator li = NewList.begin(),
+ liend = NewList.end();
+ li != liend;
+ ++li) {
+ Init *Item = *li;
+ NewOperands.clear();
+ for(int i = 0; i < RHSo->getNumOperands(); ++i) {
+ // First, replace the foreach variable with the list item
+ if (LHS->getAsString() == RHSo->getOperand(i)->getAsString()) {
+ NewOperands.push_back(Item);
+ } else {
+ NewOperands.push_back(RHSo->getOperand(i));
+ }
+ }
+
+ // Now run the operator and use its result as the new list item
+ const OpInit *NewOp = RHSo->clone(NewOperands);
+ Init *NewItem = NewOp->Fold(CurRec, CurMultiClass);
+ if (NewItem != NewOp)
+ *li = NewItem;
+ }
+ return ListInit::get(NewList, MHSl->getType());
+ }
+ }
+ return 0;
+}
+
+Init *TernOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) const {
+ switch (getOpcode()) {
+ default: assert(0 && "Unknown binop");
+ case SUBST: {
+ DefInit *LHSd = dynamic_cast<DefInit*>(LHS);
+ VarInit *LHSv = dynamic_cast<VarInit*>(LHS);
+ StringInit *LHSs = dynamic_cast<StringInit*>(LHS);
+
+ DefInit *MHSd = dynamic_cast<DefInit*>(MHS);
+ VarInit *MHSv = dynamic_cast<VarInit*>(MHS);
+ StringInit *MHSs = dynamic_cast<StringInit*>(MHS);
+
+ DefInit *RHSd = dynamic_cast<DefInit*>(RHS);
+ VarInit *RHSv = dynamic_cast<VarInit*>(RHS);
+ StringInit *RHSs = dynamic_cast<StringInit*>(RHS);
+
+ if ((LHSd && MHSd && RHSd)
+ || (LHSv && MHSv && RHSv)
+ || (LHSs && MHSs && RHSs)) {
+ if (RHSd) {
+ Record *Val = RHSd->getDef();
+ if (LHSd->getAsString() == RHSd->getAsString()) {
+ Val = MHSd->getDef();
+ }
+ return DefInit::get(Val);
+ }
+ if (RHSv) {
+ std::string Val = RHSv->getName();
+ if (LHSv->getAsString() == RHSv->getAsString()) {
+ Val = MHSv->getName();
+ }
+ return VarInit::get(Val, getType());
+ }
+ if (RHSs) {
+ std::string Val = RHSs->getValue();
+
+ std::string::size_type found;
+ std::string::size_type idx = 0;
+ do {
+ found = Val.find(LHSs->getValue(), idx);
+ if (found != std::string::npos) {
+ Val.replace(found, LHSs->getValue().size(), MHSs->getValue());
+ }
+ idx = found + MHSs->getValue().size();
+ } while (found != std::string::npos);
+
+ return StringInit::get(Val);
+ }
+ }
+ break;
+ }
+
+ case FOREACH: {
+ Init *Result = ForeachHelper(LHS, MHS, RHS, getType(),
+ CurRec, CurMultiClass);
+ if (Result != 0) {
+ return Result;
+ }
+ break;
+ }
+
+ case IF: {
+ IntInit *LHSi = dynamic_cast<IntInit*>(LHS);
+ if (Init *I = LHS->convertInitializerTo(IntRecTy::get()))
+ LHSi = dynamic_cast<IntInit*>(I);
+ if (LHSi) {
+ if (LHSi->getValue()) {
+ return MHS;
+ } else {
+ return RHS;
+ }
+ }
+ break;
+ }
+ }
+
+ return const_cast<TernOpInit *>(this);
+}
+
+Init *TernOpInit::resolveReferences(Record &R,
+ const RecordVal *RV) const {
+ Init *lhs = LHS->resolveReferences(R, RV);
+
+ if (Opc == IF && lhs != LHS) {
+ IntInit *Value = dynamic_cast<IntInit*>(lhs);
+ if (Init *I = lhs->convertInitializerTo(IntRecTy::get()))
+ Value = dynamic_cast<IntInit*>(I);
+ if (Value != 0) {
+ // Short-circuit
+ if (Value->getValue()) {
+ Init *mhs = MHS->resolveReferences(R, RV);
+ return (TernOpInit::get(getOpcode(), lhs, mhs,
+ RHS, getType()))->Fold(&R, 0);
+ } else {
+ Init *rhs = RHS->resolveReferences(R, RV);
+ return (TernOpInit::get(getOpcode(), lhs, MHS,
+ rhs, getType()))->Fold(&R, 0);
+ }
+ }
+ }
+
+ Init *mhs = MHS->resolveReferences(R, RV);
+ Init *rhs = RHS->resolveReferences(R, RV);
+
+ if (LHS != lhs || MHS != mhs || RHS != rhs)
+ return (TernOpInit::get(getOpcode(), lhs, mhs, rhs,
+ getType()))->Fold(&R, 0);
+ return Fold(&R, 0);
+}
+
+std::string TernOpInit::getAsString() const {
+ std::string Result;
+ switch (Opc) {
+ case SUBST: Result = "!subst"; break;
+ case FOREACH: Result = "!foreach"; break;
+ case IF: Result = "!if"; break;
+ }
+ return Result + "(" + LHS->getAsString() + ", " + MHS->getAsString() + ", "
+ + RHS->getAsString() + ")";
+}
+
+RecTy *TypedInit::getFieldType(const std::string &FieldName) const {
+ RecordRecTy *RecordType = dynamic_cast<RecordRecTy *>(getType());
+ if (RecordType) {
+ RecordVal *Field = RecordType->getRecord()->getValue(FieldName);
+ if (Field) {
+ return Field->getType();
+ }
+ }
+ return 0;
+}
+
+Init *
+TypedInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) const {
+ BitsRecTy *T = dynamic_cast<BitsRecTy*>(getType());
+ if (T == 0) return 0; // Cannot subscript a non-bits variable.
+ unsigned NumBits = T->getNumBits();
+
+ SmallVector<Init *, 16> NewBits(Bits.size());
+ for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
+ if (Bits[i] >= NumBits)
+ return 0;
+
+ NewBits[i] = VarBitInit::get(const_cast<TypedInit *>(this), Bits[i]);
+ }
+ return BitsInit::get(NewBits);
+}
+
+Init *
+TypedInit::convertInitListSlice(const std::vector<unsigned> &Elements) const {
+ ListRecTy *T = dynamic_cast<ListRecTy*>(getType());
+ if (T == 0) return 0; // Cannot subscript a non-list variable.
+
+ if (Elements.size() == 1)
+ return VarListElementInit::get(const_cast<TypedInit *>(this), Elements[0]);
+
+ std::vector<Init*> ListInits;
+ ListInits.reserve(Elements.size());
+ for (unsigned i = 0, e = Elements.size(); i != e; ++i)
+ ListInits.push_back(VarListElementInit::get(const_cast<TypedInit *>(this),
+ Elements[i]));
+ return ListInit::get(ListInits, T);
+}
+
+
+VarInit *VarInit::get(const std::string &VN, RecTy *T) {
+ typedef std::pair<RecTy *, TableGenStringKey> Key;
+ typedef DenseMap<Key, VarInit *> Pool;
+ static Pool ThePool;
+
+ Key TheKey(std::make_pair(T, VN));
+
+ VarInit *&I = ThePool[TheKey];
+ if (!I) I = new VarInit(VN, T);
+ return I;
+}
+
+Init *VarInit::resolveBitReference(Record &R, const RecordVal *IRV,
+ unsigned Bit) const {
+ if (R.isTemplateArg(getName())) return 0;
+ if (IRV && IRV->getName() != getName()) return 0;
+
+ RecordVal *RV = R.getValue(getName());
+ assert(RV && "Reference to a non-existent variable?");
+ assert(dynamic_cast<BitsInit*>(RV->getValue()));
+ BitsInit *BI = (BitsInit*)RV->getValue();
+
+ assert(Bit < BI->getNumBits() && "Bit reference out of range!");
+ Init *B = BI->getBit(Bit);
+
+ // If the bit is set to some value, or if we are resolving a reference to a
+ // specific variable and that variable is explicitly unset, then replace the
+ // VarBitInit with it.
+ if (IRV || !dynamic_cast<UnsetInit*>(B))
+ return B;
+ return 0;
+}
+
+Init *VarInit::resolveListElementReference(Record &R,
+ const RecordVal *IRV,
+ unsigned Elt) const {
+ if (R.isTemplateArg(getName())) return 0;
+ if (IRV && IRV->getName() != getName()) return 0;
+
+ RecordVal *RV = R.getValue(getName());
+ assert(RV && "Reference to a non-existent variable?");
+ ListInit *LI = dynamic_cast<ListInit*>(RV->getValue());
+ if (!LI) {
+ VarInit *VI = dynamic_cast<VarInit*>(RV->getValue());
+ assert(VI && "Invalid list element!");
+ return VarListElementInit::get(VI, Elt);
+ }
+
+ if (Elt >= LI->getSize())
+ return 0; // Out of range reference.
+ Init *E = LI->getElement(Elt);
+ // If the element is set to some value, or if we are resolving a reference
+ // to a specific variable and that variable is explicitly unset, then
+ // replace the VarListElementInit with it.
+ if (IRV || !dynamic_cast<UnsetInit*>(E))
+ return E;
+ return 0;
+}
+
+
+RecTy *VarInit::getFieldType(const std::string &FieldName) const {
+ if (RecordRecTy *RTy = dynamic_cast<RecordRecTy*>(getType()))
+ if (const RecordVal *RV = RTy->getRecord()->getValue(FieldName))
+ return RV->getType();
+ return 0;
+}
+
+Init *VarInit::getFieldInit(Record &R, const RecordVal *RV,
+ const std::string &FieldName) const {
+ if (dynamic_cast<RecordRecTy*>(getType()))
+ if (const RecordVal *Val = R.getValue(VarName)) {
+ if (RV != Val && (RV || dynamic_cast<UnsetInit*>(Val->getValue())))
+ return 0;
+ Init *TheInit = Val->getValue();
+ assert(TheInit != this && "Infinite loop detected!");
+ if (Init *I = TheInit->getFieldInit(R, RV, FieldName))
+ return I;
+ else
+ return 0;
+ }
+ return 0;
+}
+
+/// resolveReferences - This method is used by classes that refer to other
+/// variables which may not be defined at the time the expression is formed.
+/// If a value is set for the variable later, this method will be called on
+/// users of the value to allow the value to propagate out.
+///
+Init *VarInit::resolveReferences(Record &R, const RecordVal *RV) const {
+ if (RecordVal *Val = R.getValue(VarName))
+ if (RV == Val || (RV == 0 && !dynamic_cast<UnsetInit*>(Val->getValue())))
+ return Val->getValue();
+ return const_cast<VarInit *>(this);
+}
+
+VarBitInit *VarBitInit::get(TypedInit *T, unsigned B) {
+ typedef std::pair<TypedInit *, unsigned> Key;
+ typedef DenseMap<Key, VarBitInit *> Pool;
+
+ static Pool ThePool;
+
+ Key TheKey(std::make_pair(T, B));
+
+ VarBitInit *&I = ThePool[TheKey];
+ if (!I) I = new VarBitInit(T, B);
+ return I;
+}
+
+std::string VarBitInit::getAsString() const {
+ return TI->getAsString() + "{" + utostr(Bit) + "}";
+}
+
+Init *VarBitInit::resolveReferences(Record &R, const RecordVal *RV) const {
+ if (Init *I = getVariable()->resolveBitReference(R, RV, getBitNum()))
+ return I;
+ return const_cast<VarBitInit *>(this);
+}
+
+VarListElementInit *VarListElementInit::get(TypedInit *T,
+ unsigned E) {
+ typedef std::pair<TypedInit *, unsigned> Key;
+ typedef DenseMap<Key, VarListElementInit *> Pool;
+
+ static Pool ThePool;
+
+ Key TheKey(std::make_pair(T, E));
+
+ VarListElementInit *&I = ThePool[TheKey];
+ if (!I) I = new VarListElementInit(T, E);
+ return I;
+}
+
+std::string VarListElementInit::getAsString() const {
+ return TI->getAsString() + "[" + utostr(Element) + "]";
+}
+
+Init *
+VarListElementInit::resolveReferences(Record &R, const RecordVal *RV) const {
+ if (Init *I = getVariable()->resolveListElementReference(R, RV,
+ getElementNum()))
+ return I;
+ return const_cast<VarListElementInit *>(this);
+}
+
+Init *VarListElementInit::resolveBitReference(Record &R, const RecordVal *RV,
+ unsigned Bit) const {
+ // FIXME: This should be implemented, to support references like:
+ // bit B = AA[0]{1};
+ return 0;
+}
+
+Init *VarListElementInit:: resolveListElementReference(Record &R,
+ const RecordVal *RV,
+ unsigned Elt) const {
+ Init *Result = TI->resolveListElementReference(R, RV, Element);
+
+ if (Result) {
+ TypedInit *TInit = dynamic_cast<TypedInit *>(Result);
+ if (TInit) {
+ return TInit->resolveListElementReference(R, RV, Elt);
+ }
+ return Result;
+ }
+
+ return 0;
+}
+
+DefInit *DefInit::get(Record *R) {
+ return R->getDefInit();
+}
+
+RecTy *DefInit::getFieldType(const std::string &FieldName) const {
+ if (const RecordVal *RV = Def->getValue(FieldName))
+ return RV->getType();
+ return 0;
+}
+
+Init *DefInit::getFieldInit(Record &R, const RecordVal *RV,
+ const std::string &FieldName) const {
+ return Def->getValue(FieldName)->getValue();
+}
+
+
+std::string DefInit::getAsString() const {
+ return Def->getName();
+}
+
+FieldInit *FieldInit::get(Init *R, const std::string &FN) {
+ typedef std::pair<Init *, TableGenStringKey> Key;
+ typedef DenseMap<Key, FieldInit *> Pool;
+ static Pool ThePool;
+
+ Key TheKey(std::make_pair(R, FN));
+
+ FieldInit *&I = ThePool[TheKey];
+ if (!I) I = new FieldInit(R, FN);
+ return I;
+}
+
+Init *FieldInit::resolveBitReference(Record &R, const RecordVal *RV,
+ unsigned Bit) const {
+ if (Init *BitsVal = Rec->getFieldInit(R, RV, FieldName))
+ if (BitsInit *BI = dynamic_cast<BitsInit*>(BitsVal)) {
+ assert(Bit < BI->getNumBits() && "Bit reference out of range!");
+ Init *B = BI->getBit(Bit);
+
+ if (dynamic_cast<BitInit*>(B)) // If the bit is set.
+ return B; // Replace the VarBitInit with it.
+ }
+ return 0;
+}
+
+Init *FieldInit::resolveListElementReference(Record &R, const RecordVal *RV,
+ unsigned Elt) const {
+ if (Init *ListVal = Rec->getFieldInit(R, RV, FieldName))
+ if (ListInit *LI = dynamic_cast<ListInit*>(ListVal)) {
+ if (Elt >= LI->getSize()) return 0;
+ Init *E = LI->getElement(Elt);
+
+ // If the element is set to some value, or if we are resolving a
+ // reference to a specific variable and that variable is explicitly
+ // unset, then replace the VarListElementInit with it.
+ if (RV || !dynamic_cast<UnsetInit*>(E))
+ return E;
+ }
+ return 0;
+}
+
+Init *FieldInit::resolveReferences(Record &R, const RecordVal *RV) const {
+ Init *NewRec = RV ? Rec->resolveReferences(R, RV) : Rec;
+
+ Init *BitsVal = NewRec->getFieldInit(R, RV, FieldName);
+ if (BitsVal) {
+ Init *BVR = BitsVal->resolveReferences(R, RV);
+ return BVR->isComplete() ? BVR : const_cast<FieldInit *>(this);
+ }
+
+ if (NewRec != Rec) {
+ return FieldInit::get(NewRec, FieldName);
+ }
+ return const_cast<FieldInit *>(this);
+}
+
+void ProfileDagInit(FoldingSetNodeID &ID,
+ Init *V,
+ const std::string &VN,
+ ArrayRef<Init *> ArgRange,
+ ArrayRef<std::string> NameRange) {
+ ID.AddPointer(V);
+ ID.AddString(VN);
+
+ ArrayRef<Init *>::iterator Arg = ArgRange.begin();
+ ArrayRef<std::string>::iterator Name = NameRange.begin();
+ while (Arg != ArgRange.end()) {
+ assert(Name != NameRange.end() && "Arg name underflow!");
+ ID.AddPointer(*Arg++);
+ ID.AddString(*Name++);
+ }
+ assert(Name == NameRange.end() && "Arg name overflow!");
+}
+
+DagInit *
+DagInit::get(Init *V, const std::string &VN,
+ ArrayRef<Init *> ArgRange,
+ ArrayRef<std::string> NameRange) {
+ typedef FoldingSet<DagInit> Pool;
+ static Pool ThePool;
+
+ FoldingSetNodeID ID;
+ ProfileDagInit(ID, V, VN, ArgRange, NameRange);
+
+ void *IP = 0;
+ if (DagInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
+ return I;
+
+ DagInit *I = new DagInit(V, VN, ArgRange, NameRange);
+ ThePool.InsertNode(I, IP);
+
+ return I;
+}
+
+DagInit *
+DagInit::get(Init *V, const std::string &VN,
+ const std::vector<std::pair<Init*, std::string> > &args) {
+ typedef std::pair<Init*, std::string> PairType;
+
+ std::vector<Init *> Args;
+ std::vector<std::string> Names;
+
+ for (std::vector<PairType>::const_iterator i = args.begin(),
+ iend = args.end();
+ i != iend;
+ ++i) {
+ Args.push_back(i->first);
+ Names.push_back(i->second);
+ }
+
+ return DagInit::get(V, VN, Args, Names);
+}
+
+void DagInit::Profile(FoldingSetNodeID &ID) const {
+ ProfileDagInit(ID, Val, ValName, Args, ArgNames);
+}
+
+Init *DagInit::resolveReferences(Record &R, const RecordVal *RV) const {
+ std::vector<Init*> NewArgs;
+ for (unsigned i = 0, e = Args.size(); i != e; ++i)
+ NewArgs.push_back(Args[i]->resolveReferences(R, RV));
+
+ Init *Op = Val->resolveReferences(R, RV);
+
+ if (Args != NewArgs || Op != Val)
+ return DagInit::get(Op, ValName, NewArgs, ArgNames);
+
+ return const_cast<DagInit *>(this);
+}
+
+
+std::string DagInit::getAsString() const {
+ std::string Result = "(" + Val->getAsString();
+ if (!ValName.empty())
+ Result += ":" + ValName;
+ if (Args.size()) {
+ Result += " " + Args[0]->getAsString();
+ if (!ArgNames[0].empty()) Result += ":$" + ArgNames[0];
+ for (unsigned i = 1, e = Args.size(); i != e; ++i) {
+ Result += ", " + Args[i]->getAsString();
+ if (!ArgNames[i].empty()) Result += ":$" + ArgNames[i];
+ }
+ }
+ return Result + ")";
+}
+
+
+//===----------------------------------------------------------------------===//
+// Other implementations
+//===----------------------------------------------------------------------===//
+
+RecordVal::RecordVal(Init *N, RecTy *T, unsigned P)
+ : Name(N), Ty(T), Prefix(P) {
+ Value = Ty->convertValue(UnsetInit::get());
+ assert(Value && "Cannot create unset value for current type!");
+}
+
+RecordVal::RecordVal(const std::string &N, RecTy *T, unsigned P)
+ : Name(StringInit::get(N)), Ty(T), Prefix(P) {
+ Value = Ty->convertValue(UnsetInit::get());
+ assert(Value && "Cannot create unset value for current type!");
+}
+
+const std::string &RecordVal::getName() const {
+ StringInit *NameString = dynamic_cast<StringInit *>(Name);
+ assert(NameString && "RecordVal name is not a string!");
+ return NameString->getValue();
+}
+
+void RecordVal::dump() const { errs() << *this; }
+
+void RecordVal::print(raw_ostream &OS, bool PrintSem) const {
+ if (getPrefix()) OS << "field ";
+ OS << *getType() << " " << getName();
+
+ if (getValue())
+ OS << " = " << *getValue();
+
+ if (PrintSem) OS << ";\n";
+}
+
+unsigned Record::LastID = 0;
+
+void Record::checkName() {
+ // Ensure the record name has string type.
+ const TypedInit *TypedName = dynamic_cast<const TypedInit *>(Name);
+ assert(TypedName && "Record name is not typed!");
+ RecTy *Type = TypedName->getType();
+ if (dynamic_cast<StringRecTy *>(Type) == 0) {
+ llvm_unreachable("Record name is not a string!");
+ }
+}
+
+DefInit *Record::getDefInit() {
+ if (!TheInit)
+ TheInit = new DefInit(this, new RecordRecTy(this));
+ return TheInit;
+}
+
+const std::string &Record::getName() const {
+ const StringInit *NameString =
+ dynamic_cast<const StringInit *>(Name);
+ assert(NameString && "Record name is not a string!");
+ return NameString->getValue();
+}
+
+void Record::setName(Init *NewName) {
+ if (TrackedRecords.getDef(Name->getAsUnquotedString()) == this) {
+ TrackedRecords.removeDef(Name->getAsUnquotedString());
+ Name = NewName;
+ TrackedRecords.addDef(this);
+ } else {
+ TrackedRecords.removeClass(Name->getAsUnquotedString());
+ Name = NewName;
+ TrackedRecords.addClass(this);
+ }
+ checkName();
+ // Since the Init for the name was changed, see if we can resolve
+ // any of it using members of the Record.
+ Init *ComputedName = Name->resolveReferences(*this, 0);
+ if (ComputedName != Name) {
+ setName(ComputedName);
+ }
+ // DO NOT resolve record values to the name at this point because
+ // there might be default values for arguments of this def. Those
+ // arguments might not have been resolved yet so we don't want to
+ // prematurely assume values for those arguments were not passed to
+ // this def.
+ //
+ // Nonetheless, it may be that some of this Record's values
+ // reference the record name. Indeed, the reason for having the
+ // record name be an Init is to provide this flexibility. The extra
+ // resolve steps after completely instantiating defs takes care of
+ // this. See TGParser::ParseDef and TGParser::ParseDefm.
+}
+
+void Record::setName(const std::string &Name) {
+ setName(StringInit::get(Name));
+}
+
+/// resolveReferencesTo - If anything in this record refers to RV, replace the
+/// reference to RV with the RHS of RV. If RV is null, we resolve all possible
+/// references.
+void Record::resolveReferencesTo(const RecordVal *RV) {
+ for (unsigned i = 0, e = Values.size(); i != e; ++i) {
+ if (Init *V = Values[i].getValue())
+ Values[i].setValue(V->resolveReferences(*this, RV));
+ }
+}
+
+void Record::dump() const { errs() << *this; }
+
+raw_ostream &llvm::operator<<(raw_ostream &OS, const Record &R) {
+ OS << R.getName();
+
+ const std::vector<std::string> &TArgs = R.getTemplateArgs();
+ if (!TArgs.empty()) {
+ OS << "<";
+ for (unsigned i = 0, e = TArgs.size(); i != e; ++i) {
+ if (i) OS << ", ";
+ const RecordVal *RV = R.getValue(TArgs[i]);
+ assert(RV && "Template argument record not found??");
+ RV->print(OS, false);
+ }
+ OS << ">";
+ }
+
+ OS << " {";
+ const std::vector<Record*> &SC = R.getSuperClasses();
+ if (!SC.empty()) {
+ OS << "\t//";
+ for (unsigned i = 0, e = SC.size(); i != e; ++i)
+ OS << " " << SC[i]->getName();
+ }
+ OS << "\n";
+
+ const std::vector<RecordVal> &Vals = R.getValues();
+ for (unsigned i = 0, e = Vals.size(); i != e; ++i)
+ if (Vals[i].getPrefix() && !R.isTemplateArg(Vals[i].getName()))
+ OS << Vals[i];
+ for (unsigned i = 0, e = Vals.size(); i != e; ++i)
+ if (!Vals[i].getPrefix() && !R.isTemplateArg(Vals[i].getName()))
+ OS << Vals[i];
+
+ return OS << "}\n";
+}
+
+/// getValueInit - Return the initializer for a value with the specified name,
+/// or throw an exception if the field does not exist.
+///
+Init *Record::getValueInit(StringRef FieldName) const {
+ const RecordVal *R = getValue(FieldName);
+ if (R == 0 || R->getValue() == 0)
+ throw "Record `" + getName() + "' does not have a field named `" +
+ FieldName.str() + "'!\n";
+ return R->getValue();
+}
+
+
+/// getValueAsString - This method looks up the specified field and returns its
+/// value as a string, throwing an exception if the field does not exist or if
+/// the value is not a string.
+///
+std::string Record::getValueAsString(StringRef FieldName) const {
+ const RecordVal *R = getValue(FieldName);
+ if (R == 0 || R->getValue() == 0)
+ throw "Record `" + getName() + "' does not have a field named `" +
+ FieldName.str() + "'!\n";
+
+ if (StringInit *SI = dynamic_cast<StringInit*>(R->getValue()))
+ return SI->getValue();
+ throw "Record `" + getName() + "', field `" + FieldName.str() +
+ "' does not have a string initializer!";
+}
+
+/// getValueAsBitsInit - This method looks up the specified field and returns
+/// its value as a BitsInit, throwing an exception if the field does not exist
+/// or if the value is not the right type.
+///
+BitsInit *Record::getValueAsBitsInit(StringRef FieldName) const {
+ const RecordVal *R = getValue(FieldName);
+ if (R == 0 || R->getValue() == 0)
+ throw "Record `" + getName() + "' does not have a field named `" +
+ FieldName.str() + "'!\n";
+
+ if (BitsInit *BI = dynamic_cast<BitsInit*>(R->getValue()))
+ return BI;
+ throw "Record `" + getName() + "', field `" + FieldName.str() +
+ "' does not have a BitsInit initializer!";
+}
+
+/// getValueAsListInit - This method looks up the specified field and returns
+/// its value as a ListInit, throwing an exception if the field does not exist
+/// or if the value is not the right type.
+///
+ListInit *Record::getValueAsListInit(StringRef FieldName) const {
+ const RecordVal *R = getValue(FieldName);
+ if (R == 0 || R->getValue() == 0)
+ throw "Record `" + getName() + "' does not have a field named `" +
+ FieldName.str() + "'!\n";
+
+ if (ListInit *LI = dynamic_cast<ListInit*>(R->getValue()))
+ return LI;
+ throw "Record `" + getName() + "', field `" + FieldName.str() +
+ "' does not have a list initializer!";
+}
+
+/// getValueAsListOfDefs - This method looks up the specified field and returns
+/// its value as a vector of records, throwing an exception if the field does
+/// not exist or if the value is not the right type.
+///
+std::vector<Record*>
+Record::getValueAsListOfDefs(StringRef FieldName) const {
+ ListInit *List = getValueAsListInit(FieldName);
+ std::vector<Record*> Defs;
+ for (unsigned i = 0; i < List->getSize(); i++) {
+ if (DefInit *DI = dynamic_cast<DefInit*>(List->getElement(i))) {
+ Defs.push_back(DI->getDef());
+ } else {
+ throw "Record `" + getName() + "', field `" + FieldName.str() +
+ "' list is not entirely DefInit!";
+ }
+ }
+ return Defs;
+}
+
+/// getValueAsInt - This method looks up the specified field and returns its
+/// value as an int64_t, throwing an exception if the field does not exist or if
+/// the value is not the right type.
+///
+int64_t Record::getValueAsInt(StringRef FieldName) const {
+ const RecordVal *R = getValue(FieldName);
+ if (R == 0 || R->getValue() == 0)
+ throw "Record `" + getName() + "' does not have a field named `" +
+ FieldName.str() + "'!\n";
+
+ if (IntInit *II = dynamic_cast<IntInit*>(R->getValue()))
+ return II->getValue();
+ throw "Record `" + getName() + "', field `" + FieldName.str() +
+ "' does not have an int initializer!";
+}
+
+/// getValueAsListOfInts - This method looks up the specified field and returns
+/// its value as a vector of integers, throwing an exception if the field does
+/// not exist or if the value is not the right type.
+///
+std::vector<int64_t>
+Record::getValueAsListOfInts(StringRef FieldName) const {
+ ListInit *List = getValueAsListInit(FieldName);
+ std::vector<int64_t> Ints;
+ for (unsigned i = 0; i < List->getSize(); i++) {
+ if (IntInit *II = dynamic_cast<IntInit*>(List->getElement(i))) {
+ Ints.push_back(II->getValue());
+ } else {
+ throw "Record `" + getName() + "', field `" + FieldName.str() +
+ "' does not have a list of ints initializer!";
+ }
+ }
+ return Ints;
+}
+
+/// getValueAsListOfStrings - This method looks up the specified field and
+/// returns its value as a vector of strings, throwing an exception if the
+/// field does not exist or if the value is not the right type.
+///
+std::vector<std::string>
+Record::getValueAsListOfStrings(StringRef FieldName) const {
+ ListInit *List = getValueAsListInit(FieldName);
+ std::vector<std::string> Strings;
+ for (unsigned i = 0; i < List->getSize(); i++) {
+ if (StringInit *II = dynamic_cast<StringInit*>(List->getElement(i))) {
+ Strings.push_back(II->getValue());
+ } else {
+ throw "Record `" + getName() + "', field `" + FieldName.str() +
+ "' does not have a list of strings initializer!";
+ }
+ }
+ return Strings;
+}
+
+/// getValueAsDef - This method looks up the specified field and returns its
+/// value as a Record, throwing an exception if the field does not exist or if
+/// the value is not the right type.
+///
+Record *Record::getValueAsDef(StringRef FieldName) const {
+ const RecordVal *R = getValue(FieldName);
+ if (R == 0 || R->getValue() == 0)
+ throw "Record `" + getName() + "' does not have a field named `" +
+ FieldName.str() + "'!\n";
+
+ if (DefInit *DI = dynamic_cast<DefInit*>(R->getValue()))
+ return DI->getDef();
+ throw "Record `" + getName() + "', field `" + FieldName.str() +
+ "' does not have a def initializer!";
+}
+
+/// getValueAsBit - This method looks up the specified field and returns its
+/// value as a bit, throwing an exception if the field does not exist or if
+/// the value is not the right type.
+///
+bool Record::getValueAsBit(StringRef FieldName) const {
+ const RecordVal *R = getValue(FieldName);
+ if (R == 0 || R->getValue() == 0)
+ throw "Record `" + getName() + "' does not have a field named `" +
+ FieldName.str() + "'!\n";
+
+ if (BitInit *BI = dynamic_cast<BitInit*>(R->getValue()))
+ return BI->getValue();
+ throw "Record `" + getName() + "', field `" + FieldName.str() +
+ "' does not have a bit initializer!";
+}
+
+/// getValueAsDag - This method looks up the specified field and returns its
+/// value as an Dag, throwing an exception if the field does not exist or if
+/// the value is not the right type.
+///
+DagInit *Record::getValueAsDag(StringRef FieldName) const {
+ const RecordVal *R = getValue(FieldName);
+ if (R == 0 || R->getValue() == 0)
+ throw "Record `" + getName() + "' does not have a field named `" +
+ FieldName.str() + "'!\n";
+
+ if (DagInit *DI = dynamic_cast<DagInit*>(R->getValue()))
+ return DI;
+ throw "Record `" + getName() + "', field `" + FieldName.str() +
+ "' does not have a dag initializer!";
+}
+
+std::string Record::getValueAsCode(StringRef FieldName) const {
+ const RecordVal *R = getValue(FieldName);
+ if (R == 0 || R->getValue() == 0)
+ throw "Record `" + getName() + "' does not have a field named `" +
+ FieldName.str() + "'!\n";
+
+ if (CodeInit *CI = dynamic_cast<CodeInit*>(R->getValue()))
+ return CI->getValue();
+ throw "Record `" + getName() + "', field `" + FieldName.str() +
+ "' does not have a code initializer!";
+}
+
+
+void MultiClass::dump() const {
+ errs() << "Record:\n";
+ Rec.dump();
+
+ errs() << "Defs:\n";
+ for (RecordVector::const_iterator r = DefPrototypes.begin(),
+ rend = DefPrototypes.end();
+ r != rend;
+ ++r) {
+ (*r)->dump();
+ }
+}
+
+
+void RecordKeeper::dump() const { errs() << *this; }
+
+raw_ostream &llvm::operator<<(raw_ostream &OS, const RecordKeeper &RK) {
+ OS << "------------- Classes -----------------\n";
+ const std::map<std::string, Record*> &Classes = RK.getClasses();
+ for (std::map<std::string, Record*>::const_iterator I = Classes.begin(),
+ E = Classes.end(); I != E; ++I)
+ OS << "class " << *I->second;
+
+ OS << "------------- Defs -----------------\n";
+ const std::map<std::string, Record*> &Defs = RK.getDefs();
+ for (std::map<std::string, Record*>::const_iterator I = Defs.begin(),
+ E = Defs.end(); I != E; ++I)
+ OS << "def " << *I->second;
+ return OS;
+}
+
+
+/// getAllDerivedDefinitions - This method returns all concrete definitions
+/// that derive from the specified class name. If a class with the specified
+/// name does not exist, an error is printed and true is returned.
+std::vector<Record*>
+RecordKeeper::getAllDerivedDefinitions(const std::string &ClassName) const {
+ Record *Class = getClass(ClassName);
+ if (!Class)
+ throw "ERROR: Couldn't find the `" + ClassName + "' class!\n";
+
+ std::vector<Record*> Defs;
+ for (std::map<std::string, Record*>::const_iterator I = getDefs().begin(),
+ E = getDefs().end(); I != E; ++I)
+ if (I->second->isSubClassOf(Class))
+ Defs.push_back(I->second);
+
+ return Defs;
+}
+