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Record.cpp
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//===- 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/ADT/DenseMap.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/Hashing.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/TableGen/Error.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
// std::string wrapper for DenseMap purposes
//===----------------------------------------------------------------------===//
namespace llvm {
/// 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; }
friend hash_code hash_value(const TableGenStringKey &Value) {
using llvm::hash_value;
return hash_value(Value.str());
}
private:
std::string data;
};
/// Specialize DenseMapInfo for TableGenStringKey.
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) {
using llvm::hash_value;
return hash_value(Val);
}
static bool isEqual(const TableGenStringKey& LHS,
const TableGenStringKey& RHS) {
return LHS.str() == RHS.str();
}
};
} // namespace llvm
//===----------------------------------------------------------------------===//
// Type implementations
//===----------------------------------------------------------------------===//
BitRecTy BitRecTy::Shared;
IntRecTy IntRecTy::Shared;
StringRecTy StringRecTy::Shared;
DagRecTy DagRecTy::Shared;
void RecTy::anchor() { }
void RecTy::dump() const { print(errs()); }
ListRecTy *RecTy::getListTy() {
if (!ListTy)
ListTy.reset(new ListRecTy(this));
return ListTy.get();
}
bool RecTy::baseClassOf(const RecTy *RHS) const {
assert (RHS && "NULL pointer");
return Kind == RHS->getRecTyKind();
}
Init *BitRecTy::convertValue(BitsInit *BI) {
if (BI->getNumBits() != 1) return nullptr; // Only accept if just one bit!
return BI->getBit(0);
}
Init *BitRecTy::convertValue(IntInit *II) {
int64_t Val = II->getValue();
if (Val != 0 && Val != 1) return nullptr; // Only accept 0 or 1 for a bit!
return BitInit::get(Val != 0);
}
Init *BitRecTy::convertValue(TypedInit *VI) {
RecTy *Ty = VI->getType();
if (isa<BitRecTy>(Ty))
return VI; // Accept variable if it is already of bit type!
if (auto *BitsTy = dyn_cast<BitsRecTy>(Ty))
// Accept only bits<1> expression.
return BitsTy->getNumBits() == 1 ? VI : nullptr;
// Ternary !if can be converted to bit, but only if both sides are
// convertible to a bit.
if (TernOpInit *TOI = dyn_cast<TernOpInit>(VI)) {
if (TOI->getOpcode() != TernOpInit::TernaryOp::IF)
return nullptr;
if (!TOI->getMHS()->convertInitializerTo(BitRecTy::get()) ||
!TOI->getRHS()->convertInitializerTo(BitRecTy::get()))
return nullptr;
return TOI;
}
return nullptr;
}
bool BitRecTy::baseClassOf(const RecTy *RHS) const{
if(RecTy::baseClassOf(RHS) || RHS->getRecTyKind() == IntRecTyKind)
return true;
if(const BitsRecTy *BitsTy = dyn_cast<BitsRecTy>(RHS))
return BitsTy->getNumBits() == 1;
return false;
}
BitsRecTy *BitsRecTy::get(unsigned Sz) {
static std::vector<std::unique_ptr<BitsRecTy>> Shared;
if (Sz >= Shared.size())
Shared.resize(Sz + 1);
std::unique_ptr<BitsRecTy> &Ty = Shared[Sz];
if (!Ty)
Ty.reset(new BitsRecTy(Sz));
return Ty.get();
}
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 nullptr; // 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 nullptr;
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 nullptr;
}
Init *BitsRecTy::convertValue(TypedInit *VI) {
if (Size == 1 && isa<BitRecTy>(VI->getType()))
return BitsInit::get(VI);
if (VI->getType()->typeIsConvertibleTo(this)) {
SmallVector<Init *, 16> NewBits(Size);
for (unsigned i = 0; i != Size; ++i)
NewBits[i] = VarBitInit::get(VI, i);
return BitsInit::get(NewBits);
}
return nullptr;
}
bool BitsRecTy::baseClassOf(const RecTy *RHS) const{
if (RecTy::baseClassOf(RHS)) //argument and the receiver are the same type
return cast<BitsRecTy>(RHS)->Size == Size;
RecTyKind kind = RHS->getRecTyKind();
return (kind == BitRecTyKind && Size == 1) || (kind == IntRecTyKind);
}
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 = dyn_cast<BitInit>(BI->getBit(i)))
Result |= static_cast<int64_t>(Bit->getValue()) << i;
else
return nullptr;
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 nullptr;
}
bool IntRecTy::baseClassOf(const RecTy *RHS) const{
RecTyKind kind = RHS->getRecTyKind();
return kind==BitRecTyKind || kind==BitsRecTyKind || kind==IntRecTyKind;
}
Init *StringRecTy::convertValue(UnOpInit *BO) {
if (BO->getOpcode() == UnOpInit::CAST) {
Init *L = BO->getOperand()->convertInitializerTo(this);
if (!L) return nullptr;
if (L != BO->getOperand())
return UnOpInit::get(UnOpInit::CAST, L, StringRecTy::get());
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 || !R) return nullptr;
if (L != BO->getLHS() || R != BO->getRHS())
return BinOpInit::get(BinOpInit::STRCONCAT, L, R, StringRecTy::get());
return BO;
}
return convertValue((TypedInit*)BO);
}
Init *StringRecTy::convertValue(TypedInit *TI) {
if (isa<StringRecTy>(TI->getType()))
return TI; // Accept variable if already of the right type!
return nullptr;
}
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 nullptr;
if (!isa<ListRecTy>(LI->getType()))
return nullptr;
return ListInit::get(Elements, this);
}
Init *ListRecTy::convertValue(TypedInit *TI) {
// Ensure that TI is compatible with our class.
if (ListRecTy *LRT = dyn_cast<ListRecTy>(TI->getType()))
if (LRT->getElementType()->typeIsConvertibleTo(getElementType()))
return TI;
return nullptr;
}
bool ListRecTy::baseClassOf(const RecTy *RHS) const{
if(const ListRecTy* ListTy = dyn_cast<ListRecTy>(RHS))
return ListTy->getElementType()->typeIsConvertibleTo(Ty);
return false;
}
Init *DagRecTy::convertValue(TypedInit *TI) {
if (TI->getType()->typeIsConvertibleTo(this))
return TI;
return nullptr;
}
Init *DagRecTy::convertValue(UnOpInit *BO) {
if (BO->getOpcode() == UnOpInit::CAST) {
Init *L = BO->getOperand()->convertInitializerTo(this);
if (!L) return nullptr;
if (L != BO->getOperand())
return UnOpInit::get(UnOpInit::CAST, L, new DagRecTy);
return BO;
}
return nullptr;
}
Init *DagRecTy::convertValue(BinOpInit *BO) {
if (BO->getOpcode() == BinOpInit::CONCAT) {
Init *L = BO->getLHS()->convertInitializerTo(this);
Init *R = BO->getRHS()->convertInitializerTo(this);
if (!L || !R) return nullptr;
if (L != BO->getLHS() || R != BO->getRHS())
return BinOpInit::get(BinOpInit::CONCAT, L, R, new DagRecTy);
return BO;
}
return nullptr;
}
RecordRecTy *RecordRecTy::get(Record *R) {
return dyn_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 nullptr;
return DI;
}
Init *RecordRecTy::convertValue(TypedInit *TI) {
// Ensure that TI is compatible with Rec.
if (RecordRecTy *RRT = dyn_cast<RecordRecTy>(TI->getType()))
if (RRT->getRecord()->isSubClassOf(getRecord()) ||
RRT->getRecord() == getRecord())
return TI;
return nullptr;
}
bool RecordRecTy::baseClassOf(const RecTy *RHS) const{
const RecordRecTy *RTy = dyn_cast<RecordRecTy>(RHS);
if (!RTy)
return false;
if (Rec == RTy->getRecord() || RTy->getRecord()->isSubClassOf(Rec))
return true;
const std::vector<Record*> &SC = Rec->getSuperClasses();
for (unsigned i = 0, e = SC.size(); i != e; ++i)
if (RTy->getRecord()->isSubClassOf(SC[i]))
return true;
return false;
}
/// resolveTypes - Find a common type that T1 and T2 convert to.
/// Return null if no such type exists.
///
RecTy *llvm::resolveTypes(RecTy *T1, RecTy *T2) {
if (T1->typeIsConvertibleTo(T2))
return T2;
if (T2->typeIsConvertibleTo(T1))
return T1;
// If one is a Record type, check superclasses
if (RecordRecTy *RecTy1 = dyn_cast<RecordRecTy>(T1)) {
// See if T2 inherits from a type T1 also inherits from
for (Record *SuperRec1 : RecTy1->getRecord()->getSuperClasses()) {
RecordRecTy *SuperRecTy1 = RecordRecTy::get(SuperRec1);
RecTy *NewType1 = resolveTypes(SuperRecTy1, T2);
if (NewType1)
return NewType1;
}
}
if (RecordRecTy *RecTy2 = dyn_cast<RecordRecTy>(T2)) {
// See if T1 inherits from a type T2 also inherits from
for (Record *SuperRec2 : RecTy2->getRecord()->getSuperClasses()) {
RecordRecTy *SuperRecTy2 = RecordRecTy::get(SuperRec2);
RecTy *NewType2 = resolveTypes(T1, SuperRecTy2);
if (NewType2)
return NewType2;
}
}
return nullptr;
}
//===----------------------------------------------------------------------===//
// Initializer implementations
//===----------------------------------------------------------------------===//
void Init::anchor() { }
void Init::dump() const { return print(errs()); }
void UnsetInit::anchor() { }
UnsetInit *UnsetInit::get() {
static UnsetInit TheInit;
return &TheInit;
}
void BitInit::anchor() { }
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 (Init *I : Range)
ID.AddPointer(I);
}
BitsInit *BitsInit::get(ArrayRef<Init *> Range) {
static FoldingSet<BitsInit> ThePool;
static std::vector<std::unique_ptr<BitsInit>> TheActualPool;
FoldingSetNodeID ID;
ProfileBitsInit(ID, Range);
void *IP = nullptr;
if (BitsInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
return I;
BitsInit *I = new BitsInit(Range);
ThePool.InsertNode(I, IP);
TheActualPool.push_back(std::unique_ptr<BitsInit>(I));
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 nullptr;
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 + " }";
}
// Fix bit initializer to preserve the behavior that bit reference from a unset
// bits initializer will resolve into VarBitInit to keep the field name and bit
// number used in targets with fixed insn length.
static Init *fixBitInit(const RecordVal *RV, Init *Before, Init *After) {
if (RV || !isa<UnsetInit>(After))
return After;
return Before;
}
// 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());
Init *CachedInit = nullptr;
Init *CachedBitVar = nullptr;
bool CachedBitVarChanged = false;
for (unsigned i = 0, e = getNumBits(); i != e; ++i) {
Init *CurBit = Bits[i];
Init *CurBitVar = CurBit->getBitVar();
NewBits[i] = CurBit;
if (CurBitVar == CachedBitVar) {
if (CachedBitVarChanged) {
Init *Bit = CachedInit->getBit(CurBit->getBitNum());
NewBits[i] = fixBitInit(RV, CurBit, Bit);
}
continue;
}
CachedBitVar = CurBitVar;
CachedBitVarChanged = false;
Init *B;
do {
B = CurBitVar;
CurBitVar = CurBitVar->resolveReferences(R, RV);
CachedBitVarChanged |= B != CurBitVar;
Changed |= B != CurBitVar;
} while (B != CurBitVar);
CachedInit = CurBitVar;
if (CachedBitVarChanged) {
Init *Bit = CurBitVar->getBit(CurBit->getBitNum());
NewBits[i] = fixBitInit(RV, CurBit, Bit);
}
}
if (Changed)
return BitsInit::get(NewBits);
return const_cast<BitsInit *>(this);
}
IntInit *IntInit::get(int64_t V) {
static DenseMap<int64_t, std::unique_ptr<IntInit>> ThePool;
std::unique_ptr<IntInit> &I = ThePool[V];
if (!I) I.reset(new IntInit(V));
return I.get();
}
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 nullptr;
NewBits[i] = BitInit::get(Value & (INT64_C(1) << Bits[i]));
}
return BitsInit::get(NewBits);
}
void StringInit::anchor() { }
StringInit *StringInit::get(StringRef V) {
static StringMap<std::unique_ptr<StringInit>> ThePool;
std::unique_ptr<StringInit> &I = ThePool[V];
if (!I) I.reset(new StringInit(V));
return I.get();
}
static void ProfileListInit(FoldingSetNodeID &ID,
ArrayRef<Init *> Range,
RecTy *EltTy) {
ID.AddInteger(Range.size());
ID.AddPointer(EltTy);
for (Init *I : Range)
ID.AddPointer(I);
}
ListInit *ListInit::get(ArrayRef<Init *> Range, RecTy *EltTy) {
static FoldingSet<ListInit> ThePool;
static std::vector<std::unique_ptr<ListInit>> TheActualPool;
FoldingSetNodeID ID;
ProfileListInit(ID, Range, EltTy);
void *IP = nullptr;
if (ListInit *I = ThePool.FindNodeOrInsertPos(ID, IP))
return I;
ListInit *I = new ListInit(Range, EltTy);
ThePool.InsertNode(I, IP);
TheActualPool.push_back(std::unique_ptr<ListInit>(I));
return I;
}
void ListInit::Profile(FoldingSetNodeID &ID) const {
RecTy *EltTy = cast<ListRecTy>(getType())->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 nullptr;
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 = dyn_cast<DefInit>(Values[i]);
if (!DI)
PrintFatalError("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 nullptr; // 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 || !isa<UnsetInit>(E))
return E;
return nullptr;
}
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::resolveListElementReference(Record &R, const RecordVal *IRV,
unsigned Elt) const {
Init *Resolved = resolveReferences(R, IRV);
OpInit *OResolved = dyn_cast<OpInit>(Resolved);
if (OResolved) {
Resolved = OResolved->Fold(&R, nullptr);
}
if (Resolved != this) {
TypedInit *Typed = cast<TypedInit>(Resolved);
if (Init *New = Typed->resolveListElementReference(R, IRV, Elt))
return New;
return VarListElementInit::get(Typed, Elt);
}
return nullptr;
}
Init *OpInit::getBit(unsigned Bit) const {
if (getType() == BitRecTy::get())
return const_cast<OpInit*>(this);
return VarBitInit::get(const_cast<OpInit*>(this), Bit);
}
UnOpInit *UnOpInit::get(UnaryOp opc, Init *lhs, RecTy *Type) {
typedef std::pair<std::pair<unsigned, Init *>, RecTy *> Key;
static DenseMap<Key, std::unique_ptr<UnOpInit>> ThePool;
Key TheKey(std::make_pair(std::make_pair(opc, lhs), Type));
std::unique_ptr<UnOpInit> &I = ThePool[TheKey];
if (!I) I.reset(new UnOpInit(opc, lhs, Type));
return I.get();
}
Init *UnOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) const {
switch (getOpcode()) {
case CAST: {
if (getType()->getAsString() == "string") {
if (StringInit *LHSs = dyn_cast<StringInit>(LHS))
return LHSs;
if (DefInit *LHSd = dyn_cast<DefInit>(LHS))
return StringInit::get(LHSd->getDef()->getName());
if (IntInit *LHSi = dyn_cast<IntInit>(LHS))
return StringInit::get(LHSi->getAsString());
} else {
if (StringInit *LHSs = dyn_cast<StringInit>(LHS)) {
std::string Name = LHSs->getValue();
// From TGParser::ParseIDValue
if (CurRec) {
if (const RecordVal *RV = CurRec->getValue(Name)) {
if (RV->getType() != getType())
PrintFatalError("type mismatch in cast");
return VarInit::get(Name, RV->getType());
}
Init *TemplateArgName = QualifyName(*CurRec, CurMultiClass, Name,
":");
if (CurRec->isTemplateArg(TemplateArgName)) {
const RecordVal *RV = CurRec->getValue(TemplateArgName);
assert(RV && "Template arg doesn't exist??");
if (RV->getType() != getType())
PrintFatalError("type mismatch in cast");
return VarInit::get(TemplateArgName, RV->getType());
}
}
if (CurMultiClass) {
Init *MCName = QualifyName(CurMultiClass->Rec, CurMultiClass, Name,
"::");
if (CurMultiClass->Rec.isTemplateArg(MCName)) {
const RecordVal *RV = CurMultiClass->Rec.getValue(MCName);
assert(RV && "Template arg doesn't exist??");
if (RV->getType() != getType())
PrintFatalError("type mismatch in cast");
return VarInit::get(MCName, RV->getType());
}
}
assert(CurRec && "NULL pointer");
if (Record *D = (CurRec->getRecords()).getDef(Name))
return DefInit::get(D);
PrintFatalError(CurRec->getLoc(),
"Undefined reference:'" + Name + "'\n");
}
}
break;
}
case HEAD: {
if (ListInit *LHSl = dyn_cast<ListInit>(LHS)) {
assert(!LHSl->empty() && "Empty list in head");
return LHSl->getElement(0);
}
break;
}
case TAIL: {
if (ListInit *LHSl = dyn_cast<ListInit>(LHS)) {
assert(!LHSl->empty() && "Empty list in tail");
// Note the +1. We can't just pass the result of getValues()
// directly.
return ListInit::get(LHSl->getValues().slice(1), LHSl->getType());
}
break;
}
case EMPTY: {
if (ListInit *LHSl = dyn_cast<ListInit>(LHS))
return IntInit::get(LHSl->empty());
if (StringInit *LHSs = dyn_cast<StringInit>(LHS))
return IntInit::get(LHSs->getValue().empty());
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, nullptr);
return Fold(&R, nullptr);
}
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;
static DenseMap<Key, std::unique_ptr<BinOpInit>> ThePool;
Key TheKey(std::make_pair(std::make_pair(std::make_pair(opc, lhs), rhs),
Type));
std::unique_ptr<BinOpInit> &I = ThePool[TheKey];
if (!I) I.reset(new BinOpInit(opc, lhs, rhs, Type));
return I.get();
}
Init *BinOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) const {
switch (getOpcode()) {
case CONCAT: {
DagInit *LHSs = dyn_cast<DagInit>(LHS);
DagInit *RHSs = dyn_cast<DagInit>(RHS);
if (LHSs && RHSs) {
DefInit *LOp = dyn_cast<DefInit>(LHSs->getOperator());
DefInit *ROp = dyn_cast<DefInit>(RHSs->getOperator());
if (!LOp || !ROp || LOp->getDef() != ROp->getDef())
PrintFatalError("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 LISTCONCAT: {
ListInit *LHSs = dyn_cast<ListInit>(LHS);
ListInit *RHSs = dyn_cast<ListInit>(RHS);
if (LHSs && RHSs) {
std::vector<Init *> Args;
Args.insert(Args.end(), LHSs->begin(), LHSs->end());
Args.insert(Args.end(), RHSs->begin(), RHSs->end());
return ListInit::get(
Args, cast<ListRecTy>(LHSs->getType())->getElementType());
}
break;
}
case STRCONCAT: {
StringInit *LHSs = dyn_cast<StringInit>(LHS);
StringInit *RHSs = dyn_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 =
dyn_cast_or_null<IntInit>(LHS->convertInitializerTo(IntRecTy::get()));
IntInit *R =
dyn_cast_or_null<IntInit>(RHS->convertInitializerTo(IntRecTy::get()));
if (L && R)
return IntInit::get(L->getValue() == R->getValue());
StringInit *LHSs = dyn_cast<StringInit>(LHS);
StringInit *RHSs = dyn_cast<StringInit>(RHS);
// Make sure we've resolved
if (LHSs && RHSs)
return IntInit::get(LHSs->getValue() == RHSs->getValue());
break;
}
case ADD:
case AND:
case SHL:
case SRA:
case SRL: {
IntInit *LHSi =
dyn_cast_or_null<IntInit>(LHS->convertInitializerTo(IntRecTy::get()));
IntInit *RHSi =
dyn_cast_or_null<IntInit>(RHS->convertInitializerTo(IntRecTy::get()));
if (LHSi && RHSi) {
int64_t LHSv = LHSi->getValue(), RHSv = RHSi->getValue();
int64_t Result;
switch (getOpcode()) {
default: llvm_unreachable("Bad opcode!");
case ADD: Result = LHSv + RHSv; break;
case AND: Result = LHSv & RHSv; break;
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,nullptr);
return Fold(&R, nullptr);
}
std::string BinOpInit::getAsString() const {
std::string Result;
switch (Opc) {
case CONCAT: Result = "!con"; break;
case ADD: Result = "!add"; break;
case AND: Result = "!and"; break;
case SHL: Result = "!shl"; break;
case SRA: Result = "!sra"; break;
case SRL: Result = "!srl"; break;
case EQ: Result = "!eq"; break;
case LISTCONCAT: Result = "!listconcat"; 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;
static DenseMap<Key, std::unique_ptr<TernOpInit>> ThePool;
Key TheKey(std::make_pair(std::make_pair(std::make_pair(std::make_pair(opc,
Type),
lhs),
mhs),
rhs));
std::unique_ptr<TernOpInit> &I = ThePool[TheKey];
if (!I) I.reset(new TernOpInit(opc, lhs, mhs, rhs, Type));
return I.get();
}
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) {
// If this is a dag, recurse
if (auto *TArg = dyn_cast<TypedInit>(Arg))
if (TArg->getType()->getAsString() == "dag")
return ForeachHelper(LHS, Arg, RHSo, Type, CurRec, CurMultiClass);
std::vector<Init *> NewOperands;
for (int i = 0; i < RHSo->getNumOperands(); ++i) {
if (auto *RHSoo = dyn_cast<OpInit>(RHSo->getOperand(i))) {
if (Init *Result = EvaluateOperation(RHSoo, LHS, Arg,
Type, CurRec, CurMultiClass))
NewOperands.push_back(Result);
else
NewOperands.push_back(Arg);