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4afc509b7f
llvm/utils/TableGen/Record.cpp
David Greene 4afc509b7f Implement a !subst operation simmilar to $(subst) in GNU make to do 
def/var/string substitution on generic pattern templates.  For example:

def Type;
def v4f32 : Type;
def TYPE : Type;

class GenType<Type t> {
  let type = !(subst TYPE, v4f32, t);
}

def TheType : GenType<TYPE>;


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71801 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-14 21:54:42 +00:00

1430 lines
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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 "Record.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/Streams.h"
#include "llvm/ADT/StringExtras.h"
#include <ios>
using namespace llvm;
//===----------------------------------------------------------------------===//
// Type implementations
//===----------------------------------------------------------------------===//
void RecTy::dump() const { print(*cerr.stream()); }
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 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;
}
std::string BitsRecTy::getAsString() const {
return "bits<" + utostr(Size) + ">";
}
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 & (1LL << (Size-1))) == 0))
return 0;
}
BitsInit *Ret = new BitsInit(Size);
for (unsigned i = 0; i != Size; ++i)
Ret->setBit(i, new BitInit(Value & (1LL << 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) {
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 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(UnOpInit *BO) {
if (BO->getOpcode() == UnOpInit::CAST) {
Init *L = BO->getOperand()->convertInitializerTo(this);
if (L == 0) return 0;
if (L != BO->getOperand())
return new UnOpInit(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 new BinOpInit(BinOpInit::STRCONCAT, L, R, new StringRecTy);
return BO;
}
if (BO->getOpcode() == BinOpInit::NAMECONCAT) {
if (BO->getType()->getAsString() == getAsString()) {
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 new BinOpInit(BinOpInit::NAMECONCAT, 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;
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;
}
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 new UnOpInit(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 new BinOpInit(BinOpInit::CONCAT, L, R, new DagRecTy);
return BO;
}
if (BO->getOpcode() == BinOpInit::NAMECONCAT) {
if (BO->getType()->getAsString() == getAsString()) {
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 new BinOpInit(BinOpInit::CONCAT, L, R, new DagRecTy);
return BO;
}
}
return 0;
}
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 {
return Rec == RHS->getRecord() || RHS->getRecord()->isSubClassOf(Rec);
}
//===----------------------------------------------------------------------===//
// Initializer implementations
//===----------------------------------------------------------------------===//
void Init::dump() const { return print(*cerr.stream()); }
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;
}
std::string BitsInit::getAsString() const {
//if (!printInHex(OS)) return;
//if (!printAsVariable(OS)) return;
//if (!printAsUnset(OS)) return;
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 + " }";
}
bool BitsInit::printInHex(std::ostream &OS) const {
// First, attempt to convert the value into an integer value...
int64_t 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, const RecordVal *RV) {
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, RV);
Changed |= B != CurBit;
} while (B != CurBit);
New->setBit(i, CurBit);
}
if (Changed)
return New;
delete New;
return this;
}
std::string IntInit::getAsString() const {
return itostr(Value);
}
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] >= 64) {
delete BI;
return 0;
}
BI->setBit(i, new BitInit(Value & (INT64_C(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);
}
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) {
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 new ListInit(Resolved);
return this;
}
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) {
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) {
Init *Folded = Fold(&R, 0);
if (Folded != this) {
TypedInit *Typed = dynamic_cast<TypedInit *>(Folded);
if (Typed) {
return Typed->resolveListElementReference(R, IRV, Elt);
}
}
return 0;
}
Init *UnOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) {
switch (getOpcode()) {
default: assert(0 && "Unknown unop");
case CAST: {
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 nameconcat";
}
return new VarInit(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 nameconcat";
}
return new VarInit(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 nameconcat";
}
return new VarInit(MCName, RV->getType());
}
}
if (Record *D = Records.getDef(Name))
return new DefInit(D);
cerr << "Variable not defined: '" + Name + "'\n";
assert(0 && "Variable not found");
return 0;
}
break;
}
}
return this;
}
Init *UnOpInit::resolveReferences(Record &R, const RecordVal *RV) {
Init *lhs = LHS->resolveReferences(R, RV);
if (LHS != lhs)
return (new UnOpInit(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;
}
return Result + "(" + LHS->getAsString() + ")";
}
Init *BinOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) {
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->getDef() != ROp->getDef()) {
bool LIsOps =
LOp->getDef()->getName() == "outs" ||
LOp->getDef()->getName() != "ins" ||
LOp->getDef()->getName() != "defs";
bool RIsOps =
ROp->getDef()->getName() == "outs" ||
ROp->getDef()->getName() != "ins" ||
ROp->getDef()->getName() != "defs";
if (!LIsOps || !RIsOps)
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 new DagInit(LHSs->getOperator(), "", Args, ArgNames);
}
break;
}
case STRCONCAT: {
StringInit *LHSs = dynamic_cast<StringInit*>(LHS);
StringInit *RHSs = dynamic_cast<StringInit*>(RHS);
if (LHSs && RHSs)
return new StringInit(LHSs->getValue() + RHSs->getValue());
break;
}
case NAMECONCAT: {
StringInit *LHSs = dynamic_cast<StringInit*>(LHS);
StringInit *RHSs = dynamic_cast<StringInit*>(RHS);
if (LHSs && RHSs) {
std::string Name(LHSs->getValue() + RHSs->getValue());
// From TGParser::ParseIDValue
if (CurRec) {
if (const RecordVal *RV = CurRec->getValue(Name)) {
if (RV->getType() != getType()) {
throw "type mismatch in nameconcat";
}
return new VarInit(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 nameconcat";
}
return new VarInit(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 nameconcat";
}
return new VarInit(MCName, RV->getType());
}
}
if (Record *D = Records.getDef(Name))
return new DefInit(D);
cerr << "Variable not defined: '" + Name + "'\n";
assert(0 && "Variable not found");
return 0;
}
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 new IntInit(Result);
}
break;
}
}
return this;
}
Init *BinOpInit::resolveReferences(Record &R, const RecordVal *RV) {
Init *lhs = LHS->resolveReferences(R, RV);
Init *rhs = RHS->resolveReferences(R, RV);
if (LHS != lhs || RHS != rhs)
return (new BinOpInit(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 STRCONCAT: Result = "!strconcat"; break;
case NAMECONCAT:
Result = "!nameconcat<" + getType()->getAsString() + ">"; break;
}
return Result + "(" + LHS->getAsString() + ", " + RHS->getAsString() + ")";
}
Init *TernOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) {
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 new DefInit(Val);
}
if (RHSv) {
std::string Val = RHSv->getName();
if (LHSv->getAsString() == RHSv->getAsString()) {
Val = MHSv->getName();
}
return new VarInit(Val, getType());
}
if (RHSs) {
std::string Val = RHSs->getValue();
std::string::size_type found;
do {
found = Val.find(LHSs->getValue());
if (found != std::string::npos) {
Val.replace(found, LHSs->getValue().size(), MHSs->getValue());
}
} while (found != std::string::npos);
return new StringInit(Val);
}
}
break;
}
case FOREACH: {
DagInit *MHSd = dynamic_cast<DagInit*>(MHS);
ListInit *MHSl = dynamic_cast<ListInit*>(MHS);
DagRecTy *DagType = dynamic_cast<DagRecTy*>(getType());
ListRecTy *ListType = dynamic_cast<ListRecTy*>(getType());
OpInit *RHSo = dynamic_cast<OpInit*>(RHS);
if (!RHSo) {
cerr << "!foreach requires an operator\n";
assert(0 && "No operator for !foreach");
}
TypedInit *LHSt = dynamic_cast<TypedInit*>(LHS);
if (!LHSt) {
cerr << "!foreach requires typed variable\n";
assert(0 && "No typed variable for !foreach");
}
if (MHSd && DagType || MHSl && ListType) {
std::vector<Init *> NewOperands;
if (MHSd) {
Init *Val = MHSd->getOperator();
TypedInit *TVal = dynamic_cast<TypedInit*>(Val);
if (TVal && TVal->getType()->typeIsConvertibleTo(LHSt->getType())) {
// First, replace the foreach variable with the DAG leaf
for (int i = 0; i < RHSo->getNumOperands(); ++i) {
if (LHS->getAsString() == RHSo->getOperand(i)->getAsString()) {
NewOperands.push_back(Val);
}
else {
NewOperands.push_back(RHSo->getOperand(i));
}
}
// Now run the operator and use its result as the new leaf
OpInit *NewOp = RHSo->clone(NewOperands);
Val = NewOp->Fold(CurRec, CurMultiClass);
if (Val != NewOp) {
delete NewOp;
}
}
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);
TypedInit *TArg = dynamic_cast<TypedInit*>(Arg);
if (TArg && TArg->getType()->typeIsConvertibleTo(LHSt->getType())) {
NewOperands.clear();
// First, replace the foreach variable with the DAG leaf
for (int i = 0; i < RHSo->getNumOperands(); ++i) {
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
OpInit *NewOp = RHSo->clone(NewOperands);
Arg = NewOp->Fold(CurRec, CurMultiClass);
if (Arg != NewOp) {
delete NewOp;
}
}
if (LHSt->getType()->getAsString() == "string") {
NewOperands.clear();
// First, replace the foreach variable with the DAG leaf
for (int i = 0; i < RHSo->getNumOperands(); ++i) {
if (LHS->getAsString() == RHSo->getOperand(i)->getAsString()) {
NewOperands.push_back(new StringInit(ArgName));
}
else {
NewOperands.push_back(RHSo->getOperand(i));
}
}
// Now run the operator and use its result as the new leaf
OpInit *NewOp = RHSo->clone(NewOperands);
Init *ArgNameInit = NewOp->Fold(CurRec, CurMultiClass);
StringInit *SArgNameInit = dynamic_cast<StringInit*>(ArgNameInit);
if (SArgNameInit) {
ArgName = SArgNameInit->getValue();
}
if (ArgNameInit != NewOp) {
delete NewOp;
}
delete ArgNameInit;
}
args.push_back(std::make_pair(Arg, ArgName));
}
return new DagInit(Val, "", args);
}
if (MHSl) {
std::vector<Init *> NewList(MHSl->begin(), MHSl->end());
for (ListInit::iterator li = NewList.begin(),
liend = NewList.end();
li != liend;
++li) {
Init *Item = *li;
TypedInit *TItem = dynamic_cast<TypedInit*>(Item);
if (TItem && TItem->getType()->typeIsConvertibleTo(LHSt->getType())) {
// First, replace the foreach variable with the list item
for (int i = 0; i < RHSo->getNumOperands(); ++i) {
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
OpInit *NewOp = RHSo->clone(NewOperands);
*li = NewOp->Fold(CurRec, CurMultiClass);
if (*li != NewOp) {
delete NewOp;
}
}
}
return new ListInit(NewList);
}
}
break;
}
}
return this;
}
Init *TernOpInit::resolveReferences(Record &R, const RecordVal *RV) {
Init *lhs = LHS->resolveReferences(R, RV);
Init *mhs = MHS->resolveReferences(R, RV);
Init *rhs = RHS->resolveReferences(R, RV);
if (LHS != lhs || MHS != mhs || RHS != rhs)
return (new TernOpInit(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;
}
return Result + "(" + LHS->getAsString() + ", " + MHS->getAsString() + ", "
+ RHS->getAsString() + ")";
}
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, const RecordVal *IRV,
unsigned Bit) {
if (R.isTemplateArg(getName())) return 0;
if (IRV && IRV->getName() != 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, const RecordVal *IRV,
unsigned Elt) {
if (R.isTemplateArg(getName())) return 0;
if (IRV && IRV->getName() != getName()) return 0;
RecordVal *RV = R.getValue(getName());
assert(RV && "Reference to a non-existant variable?");
ListInit *LI = dynamic_cast<ListInit*>(RV->getValue());
if (!LI) {
VarInit *VI = dynamic_cast<VarInit*>(RV->getValue());
assert(VI && "Invalid list element!");
return new VarListElementInit(VI, Elt);
}
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 (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, const RecordVal *RV) {
if (RecordVal *Val = R.getValue(VarName))
if (RV == Val || (RV == 0 && !dynamic_cast<UnsetInit*>(Val->getValue())))
return Val->getValue();
return this;
}
std::string VarBitInit::getAsString() const {
return TI->getAsString() + "{" + utostr(Bit) + "}";
}
Init *VarBitInit::resolveReferences(Record &R, const RecordVal *RV) {
if (Init *I = getVariable()->resolveBitReference(R, RV, getBitNum()))
return I;
return this;
}
std::string VarListElementInit::getAsString() const {
return TI->getAsString() + "[" + utostr(Element) + "]";
}
Init *VarListElementInit::resolveReferences(Record &R, const RecordVal *RV) {
if (Init *I = getVariable()->resolveListElementReference(R, RV,
getElementNum()))
return I;
return this;
}
Init *VarListElementInit::resolveBitReference(Record &R, const RecordVal *RV,
unsigned Bit) {
// 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) {
// 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();
}
std::string DefInit::getAsString() const {
return Def->getName();
}
Init *FieldInit::resolveBitReference(Record &R, const RecordVal *RV,
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, const RecordVal *RV,
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, const RecordVal *RV) {
Init *NewRec = RV ? Rec->resolveReferences(R, RV) : Rec;
Init *BitsVal = NewRec->getFieldInit(R, FieldName);
if (BitsVal) {
Init *BVR = BitsVal->resolveReferences(R, RV);
return BVR->isComplete() ? BVR : this;
}
if (NewRec != Rec) {
return new FieldInit(NewRec, FieldName);
}
return this;
}
Init *DagInit::resolveReferences(Record &R, const RecordVal *RV) {
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 new DagInit(Op, "", NewArgs, ArgNames);
return 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(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 { 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";
}
void Record::setName(const std::string &Name) {
if (Records.getDef(getName()) == this) {
Records.removeDef(getName());
this->Name = Name;
Records.addDef(this);
} else {
Records.removeClass(getName());
this->Name = Name;
Records.addClass(this);
}
}
/// 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 { 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!";
}
/// 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(const std::string &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 +
"' 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(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 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(const std::string &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 +
"' does not have a list of ints initializer!";
}
}
return Ints;
}
/// 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 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(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!";
}
std::string Record::getValueAsCode(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 CodeInit *CI = dynamic_cast<const CodeInit*>(R->getValue()))
return CI->getValue();
throw "Record `" + getName() + "', field `" + FieldName +
"' does not have a code initializer!";
}
void MultiClass::dump() const {
cerr << "Record:\n";
Rec.dump();
cerr << "Defs:\n";
for (RecordVector::const_iterator r = DefPrototypes.begin(),
rend = DefPrototypes.end();
r != rend;
++r) {
(*r)->dump();
}
}
void RecordKeeper::dump() const { 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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