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llvm-project/llvm/utils/TableGen/Record.cpp

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//===- Record.cpp - Record implementation ---------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//
//===----------------------------------------------------------------------===//
#include "Record.h"
#include "llvm/Support/DataTypes.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
// Type implementations
//===----------------------------------------------------------------------===//
void RecTy::dump() const { print(std::cerr); }
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) {
int Val = II->getValue();
if (Val != 0 && Val != 1) return 0; // Only accept 0 or 1 for a bit!
return new BitInit(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;
}
Init *BitsRecTy::convertValue(UnsetInit *UI) {
BitsInit *Ret = new BitsInit(Size);
for (unsigned i = 0; i != Size; ++i)
Ret->setBit(i, new UnsetInit());
return Ret;
}
Init *BitsRecTy::convertValue(BitInit *UI) {
if (Size != 1) return 0; // Can only convert single bit...
BitsInit *Ret = new BitsInit(1);
Ret->setBit(0, UI);
return Ret;
}
// 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 (Value >= 0) {
if (Value & ~((1LL << Size)-1))
return 0;
} else {
if ((Value >> Size) != -1 || ((Value & (1 << (Size-1))) == 0))
return 0;
}
BitsInit *Ret = new BitsInit(Size);
for (unsigned i = 0; i != Size; ++i)
Ret->setBit(i, new BitInit(Value & (1 << i)));
return Ret;
}
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) {
BitsInit *Ret = new BitsInit(Size);
for (unsigned i = 0; i != Size; ++i)
Ret->setBit(i, new VarBitInit(VI, i));
return Ret;
}
if (Size == 1 && dynamic_cast<BitRecTy*>(VI->getType())) {
BitsInit *Ret = new BitsInit(1);
Ret->setBit(0, VI);
return Ret;
}
return 0;
}
Init *IntRecTy::convertValue(BitInit *BI) {
return new IntInit(BI->getValue());
}
Init *IntRecTy::convertValue(BitsInit *BI) {
int 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 new IntInit(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(TypedInit *TI) {
if (dynamic_cast<StringRecTy*>(TI->getType()))
return TI; // Accept variable if already of the right type!
return 0;
}
void ListRecTy::print(std::ostream &OS) const {
OS << "list<" << *Ty << ">";
}
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;
return new ListInit(Elements);
}
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;
}
void RecordRecTy::print(std::ostream &OS) const {
OS << 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 {
return Rec == RHS->getRecord() || RHS->getRecord()->isSubClassOf(Rec);
}
//===----------------------------------------------------------------------===//
// Initializer implementations
//===----------------------------------------------------------------------===//
void Init::dump() const { return print(std::cerr); }
Init *BitsInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) {
BitsInit *BI = new BitsInit(Bits.size());
for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
if (Bits[i] >= getNumBits()) {
delete BI;
return 0;
}
BI->setBit(i, getBit(Bits[i]));
}
return BI;
}
void BitsInit::print(std::ostream &OS) const {
//if (!printInHex(OS)) return;
//if (!printAsVariable(OS)) return;
//if (!printAsUnset(OS)) return;
OS << "{ ";
for (unsigned i = 0, e = getNumBits(); i != e; ++i) {
if (i) OS << ", ";
if (Init *Bit = getBit(e-i-1))
Bit->print(OS);
else
OS << "*";
}
OS << " }";
}
bool BitsInit::printInHex(std::ostream &OS) const {
// First, attempt to convert the value into an integer value...
int Result = 0;
for (unsigned i = 0, e = getNumBits(); i != e; ++i)
if (BitInit *Bit = dynamic_cast<BitInit*>(getBit(i))) {
Result |= Bit->getValue() << i;
} else {
return true;
}
OS << "0x" << std::hex << Result << std::dec;
return false;
}
bool BitsInit::printAsVariable(std::ostream &OS) const {
// Get the variable that we may be set equal to...
assert(getNumBits() != 0);
VarBitInit *FirstBit = dynamic_cast<VarBitInit*>(getBit(0));
if (FirstBit == 0) return true;
TypedInit *Var = FirstBit->getVariable();
// Check to make sure the types are compatible.
BitsRecTy *Ty = dynamic_cast<BitsRecTy*>(FirstBit->getVariable()->getType());
if (Ty == 0) return true;
if (Ty->getNumBits() != getNumBits()) return true; // Incompatible types!
// Check to make sure all bits are referring to the right bits in the variable
for (unsigned i = 0, e = getNumBits(); i != e; ++i) {
VarBitInit *Bit = dynamic_cast<VarBitInit*>(getBit(i));
if (Bit == 0 || Bit->getVariable() != Var || Bit->getBitNum() != i)
return true;
}
Var->print(OS);
return false;
}
bool BitsInit::printAsUnset(std::ostream &OS) const {
for (unsigned i = 0, e = getNumBits(); i != e; ++i)
if (!dynamic_cast<UnsetInit*>(getBit(i)))
return true;
OS << "?";
return false;
}
// 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) {
bool Changed = false;
BitsInit *New = new BitsInit(getNumBits());
for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
Init *B;
Init *CurBit = getBit(i);
do {
B = CurBit;
CurBit = CurBit->resolveReferences(R);
Changed |= B != CurBit;
} while (B != CurBit);
New->setBit(i, CurBit);
}
if (Changed)
return New;
delete New;
return this;
}
Init *IntInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) {
BitsInit *BI = new BitsInit(Bits.size());
for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
if (Bits[i] >= 32) {
delete BI;
return 0;
}
BI->setBit(i, new BitInit(Value & (1 << Bits[i])));
}
return BI;
}
Init *ListInit::convertInitListSlice(const std::vector<unsigned> &Elements) {
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 new ListInit(Vals);
}
Init *ListInit::resolveReferences(Record &R) {
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);
Changed |= E != CurElt;
} while (E != CurElt);
Resolved.push_back(E);
}
if (Changed)
return new ListInit(Resolved);
return this;
}
void ListInit::print(std::ostream &OS) const {
OS << "[";
for (unsigned i = 0, e = Values.size(); i != e; ++i) {
if (i) OS << ", ";
OS << *Values[i];
}
OS << "]";
}
Init *TypedInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) {
BitsRecTy *T = dynamic_cast<BitsRecTy*>(getType());
if (T == 0) return 0; // Cannot subscript a non-bits variable...
unsigned NumBits = T->getNumBits();
BitsInit *BI = new BitsInit(Bits.size());
for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
if (Bits[i] >= NumBits) {
delete BI;
return 0;
}
BI->setBit(i, new VarBitInit(this, Bits[i]));
}
return BI;
}
Init *TypedInit::convertInitListSlice(const std::vector<unsigned> &Elements) {
ListRecTy *T = dynamic_cast<ListRecTy*>(getType());
if (T == 0) return 0; // Cannot subscript a non-list variable...
if (Elements.size() == 1)
return new VarListElementInit(this, Elements[0]);
std::vector<Init*> ListInits;
ListInits.reserve(Elements.size());
for (unsigned i = 0, e = Elements.size(); i != e; ++i)
ListInits.push_back(new VarListElementInit(this, Elements[i]));
return new ListInit(ListInits);
}
Init *VarInit::resolveBitReference(Record &R, unsigned Bit) {
if (R.isTemplateArg(getName()))
return 0;
RecordVal *RV = R.getValue(getName());
assert(RV && "Reference to a non-existant 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 (!dynamic_cast<UnsetInit*>(B)) // If the bit is not set...
return B; // Replace the VarBitInit with it.
return 0;
}
Init *VarInit::resolveListElementReference(Record &R, unsigned Elt) {
if (R.isTemplateArg(getName()))
return 0;
RecordVal *RV = R.getValue(getName());
assert(RV && "Reference to a non-existant variable?");
ListInit *LI = dynamic_cast<ListInit*>(RV->getValue());
assert(LI && "Invalid list element!");
if (Elt >= LI->getSize())
return 0; // Out of range reference.
Init *E = LI->getElement(Elt);
if (!dynamic_cast<UnsetInit*>(E)) // If the element is set
return E; // Replace the VarListElementInit with it.
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 std::string &FieldName) const {
if (RecordRecTy *RTy = dynamic_cast<RecordRecTy*>(getType()))
if (const RecordVal *RV = R.getValue(VarName)) {
Init *TheInit = RV->getValue();
assert(TheInit != this && "Infinite loop detected!");
if (Init *I = TheInit->getFieldInit(R, 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 they 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) {
if (RecordVal *Val = R.getValue(VarName))
if (!dynamic_cast<UnsetInit*>(Val->getValue()))
return Val->getValue();
return this;
}
Init *VarBitInit::resolveReferences(Record &R) {
if (Init *I = getVariable()->resolveBitReference(R, getBitNum()))
return I;
return this;
}
Init *VarListElementInit::resolveReferences(Record &R) {
if (Init *I = getVariable()->resolveListElementReference(R, getElementNum()))
return I;
return this;
}
Init *VarListElementInit::resolveBitReference(Record &R, unsigned Bit) {
// FIXME: This should be implemented, to support references like:
// bit B = AA[0]{1};
return 0;
}
Init *VarListElementInit::resolveListElementReference(Record &R, unsigned Elt) {
// FIXME: This should be implemented, to support references like:
// int B = AA[0][1];
return 0;
}
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 std::string &FieldName) const {
return Def->getValue(FieldName)->getValue();
}
void DefInit::print(std::ostream &OS) const {
OS << Def->getName();
}
Init *FieldInit::resolveBitReference(Record &R, unsigned Bit) {
if (Init *BitsVal = Rec->getFieldInit(R, 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, unsigned Elt) {
if (Init *ListVal = Rec->getFieldInit(R, FieldName))
if (ListInit *LI = dynamic_cast<ListInit*>(ListVal)) {
if (Elt >= LI->getSize()) return 0;
Init *E = LI->getElement(Elt);
if (!dynamic_cast<UnsetInit*>(E)) // If the bit is set...
return E; // Replace the VarListElementInit with it.
}
return 0;
}
Init *FieldInit::resolveReferences(Record &R) {
Init *BitsVal = Rec->getFieldInit(R, FieldName);
if (BitsVal) {
Init *BVR = BitsVal->resolveReferences(R);
return BVR->isComplete() ? BVR : this;
}
return this;
}
void DagInit::print(std::ostream &OS) const {
OS << "(" << NodeTypeDef->getName();
if (Args.size()) {
OS << " " << *Args[0];
if (!ArgNames[0].empty()) OS << ":$" << ArgNames[0];
for (unsigned i = 1, e = Args.size(); i != e; ++i) {
OS << ", " << *Args[i];
if (!ArgNames[i].empty()) OS << ":$" << ArgNames[i];
}
}
OS << ")";
}
//===----------------------------------------------------------------------===//
// Other implementations
//===----------------------------------------------------------------------===//
RecordVal::RecordVal(const std::string &N, RecTy *T, unsigned P)
: Name(N), Ty(T), Prefix(P) {
Value = Ty->convertValue(new UnsetInit());
assert(Value && "Cannot create unset value for current type!");
}
void RecordVal::dump() const { std::cerr << *this; }
void RecordVal::print(std::ostream &OS, bool PrintSem) const {
if (getPrefix()) OS << "field ";
OS << *getType() << " " << getName();
if (getValue()) {
OS << " = " << *getValue();
}
if (PrintSem) OS << ";\n";
}
// resolveReferences - If there are any field references that refer to fields
// that have been filled in, we can propagate the values now.
//
void Record::resolveReferences() {
for (unsigned i = 0, e = Values.size(); i != e; ++i)
Values[i].setValue(Values[i].getValue()->resolveReferences(*this));
}
void Record::dump() const { std::cerr << *this; }
std::ostream &llvm::operator<<(std::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(const std::string &FieldName) const {
const RecordVal *R = getValue(FieldName);
if (R == 0 || R->getValue() == 0)
throw "Record `" + getName() + "' does not have a field named `" +
FieldName + "'!\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(const std::string &FieldName) const {
const RecordVal *R = getValue(FieldName);
if (R == 0 || R->getValue() == 0)
throw "Record `" + getName() + "' does not have a field named `" +
FieldName + "'!\n";
if (const StringInit *SI = dynamic_cast<const StringInit*>(R->getValue()))
return SI->getValue();
throw "Record `" + getName() + "', field `" + FieldName +
"' 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(const std::string &FieldName) const {
const RecordVal *R = getValue(FieldName);
if (R == 0 || R->getValue() == 0)
throw "Record `" + getName() + "' does not have a field named `" +
FieldName + "'!\n";
if (BitsInit *BI = dynamic_cast<BitsInit*>(R->getValue()))
return BI;
throw "Record `" + getName() + "', field `" + FieldName +
"' 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(const std::string &FieldName) const {
const RecordVal *R = getValue(FieldName);
if (R == 0 || R->getValue() == 0)
throw "Record `" + getName() + "' does not have a field named `" +
FieldName + "'!\n";
if (ListInit *LI = dynamic_cast<ListInit*>(R->getValue()))
return LI;
throw "Record `" + getName() + "', field `" + FieldName +
"' does not have a list initializer!";
}
/// getValueAsInt - This method looks up the specified field and returns its
/// value as an int, throwing an exception if the field does not exist or if
/// the value is not the right type.
///
int Record::getValueAsInt(const std::string &FieldName) const {
const RecordVal *R = getValue(FieldName);
if (R == 0 || R->getValue() == 0)
throw "Record `" + getName() + "' does not have a field named `" +
FieldName + "'!\n";
if (IntInit *II = dynamic_cast<IntInit*>(R->getValue()))
return II->getValue();
throw "Record `" + getName() + "', field `" + FieldName +
"' does not have a list initializer!";
}
/// 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(const std::string &FieldName) const {
const RecordVal *R = getValue(FieldName);
if (R == 0 || R->getValue() == 0)
throw "Record `" + getName() + "' does not have a field named `" +
FieldName + "'!\n";
if (DefInit *DI = dynamic_cast<DefInit*>(R->getValue()))
return DI->getDef();
throw "Record `" + getName() + "', field `" + FieldName +
"' does not have a list 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(const std::string &FieldName) const {
const RecordVal *R = getValue(FieldName);
if (R == 0 || R->getValue() == 0)
throw "Record `" + getName() + "' does not have a field named `" +
FieldName + "'!\n";
if (BitInit *BI = dynamic_cast<BitInit*>(R->getValue()))
return BI->getValue();
throw "Record `" + getName() + "', field `" + FieldName +
"' 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(const std::string &FieldName) const {
const RecordVal *R = getValue(FieldName);
if (R == 0 || R->getValue() == 0)
throw "Record `" + getName() + "' does not have a field named `" +
FieldName + "'!\n";
if (DagInit *DI = dynamic_cast<DagInit*>(R->getValue()))
return DI;
throw "Record `" + getName() + "', field `" + FieldName +
"' does not have a dag initializer!";
}
void RecordKeeper::dump() const { std::cerr << *this; }
std::ostream &llvm::operator<<(std::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 = Records.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;
}
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