#include "TGParser.h"
#include "llvm/TableGen/Record.h"
#include "llvm/ADT/StringExtras.h"
#include <algorithm>
#include <sstream>
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
namespace llvm {
struct SubClassReference {
SMLoc RefLoc;
Record *Rec;
std::vector<Init*> TemplateArgs;
SubClassReference() : Rec(0) {}
bool isInvalid() const { return Rec == 0; }
};
struct SubMultiClassReference {
SMLoc RefLoc;
MultiClass *MC;
std::vector<Init*> TemplateArgs;
SubMultiClassReference() : MC(0) {}
bool isInvalid() const { return MC == 0; }
void dump() const;
};
void SubMultiClassReference::dump() const {
errs() << "Multiclass:\n";
MC->dump();
errs() << "Template args:\n";
for (std::vector<Init *>::const_iterator i = TemplateArgs.begin(),
iend = TemplateArgs.end();
i != iend;
++i) {
(*i)->dump();
}
}
}
bool TGParser::AddValue(Record *CurRec, SMLoc Loc, const RecordVal &RV) {
if (CurRec == 0)
CurRec = &CurMultiClass->Rec;
if (RecordVal *ERV = CurRec->getValue(RV.getNameInit())) {
if (ERV->setValue(RV.getValue()))
return Error(Loc, "New definition of '" + RV.getName() + "' of type '" +
RV.getType()->getAsString() + "' is incompatible with " +
"previous definition of type '" +
ERV->getType()->getAsString() + "'");
} else {
CurRec->addValue(RV);
}
return false;
}
bool TGParser::SetValue(Record *CurRec, SMLoc Loc, Init *ValName,
const std::vector<unsigned> &BitList, Init *V) {
if (!V) return false;
if (CurRec == 0) CurRec = &CurMultiClass->Rec;
RecordVal *RV = CurRec->getValue(ValName);
if (RV == 0)
return Error(Loc, "Value '" + ValName->getAsUnquotedString()
+ "' unknown!");
if (BitList.empty())
if (VarInit *VI = dynamic_cast<VarInit*>(V))
if (VI->getNameInit() == ValName)
return false;
if (!BitList.empty()) {
BitsInit *CurVal = dynamic_cast<BitsInit*>(RV->getValue());
if (CurVal == 0)
return Error(Loc, "Value '" + ValName->getAsUnquotedString()
+ "' is not a bits type");
Init *BI = V->convertInitializerTo(BitsRecTy::get(BitList.size()));
if (BI == 0) {
V->convertInitializerTo(BitsRecTy::get(BitList.size()));
return Error(Loc, "Initializer is not compatible with bit range");
}
BitsInit *BInit = dynamic_cast<BitsInit*>(BI);
assert(BInit != 0);
SmallVector<Init *, 16> NewBits(CurVal->getNumBits());
for (unsigned i = 0, e = BitList.size(); i != e; ++i) {
unsigned Bit = BitList[i];
if (NewBits[Bit])
return Error(Loc, "Cannot set bit #" + utostr(Bit) + " of value '" +
ValName->getAsUnquotedString() + "' more than once");
NewBits[Bit] = BInit->getBit(i);
}
for (unsigned i = 0, e = CurVal->getNumBits(); i != e; ++i)
if (NewBits[i] == 0)
NewBits[i] = CurVal->getBit(i);
V = BitsInit::get(NewBits);
}
if (RV->setValue(V))
return Error(Loc, "Value '" + ValName->getAsUnquotedString() + "' of type '"
+ RV->getType()->getAsString() +
"' is incompatible with initializer '" + V->getAsString()
+ "'");
return false;
}
bool TGParser::AddSubClass(Record *CurRec, SubClassReference &SubClass) {
Record *SC = SubClass.Rec;
const std::vector<RecordVal> &Vals = SC->getValues();
for (unsigned i = 0, e = Vals.size(); i != e; ++i)
if (AddValue(CurRec, SubClass.RefLoc, Vals[i]))
return true;
const std::vector<Init *> &TArgs = SC->getTemplateArgs();
if (TArgs.size() < SubClass.TemplateArgs.size())
return Error(SubClass.RefLoc, "More template args specified than expected");
for (unsigned i = 0, e = TArgs.size(); i != e; ++i) {
if (i < SubClass.TemplateArgs.size()) {
if (SetValue(CurRec, SubClass.RefLoc, TArgs[i], std::vector<unsigned>(),
SubClass.TemplateArgs[i]))
return true;
CurRec->resolveReferencesTo(CurRec->getValue(TArgs[i]));
CurRec->removeValue(TArgs[i]);
} else if (!CurRec->getValue(TArgs[i])->getValue()->isComplete()) {
return Error(SubClass.RefLoc,"Value not specified for template argument #"
+ utostr(i) + " (" + TArgs[i]->getAsUnquotedString()
+ ") of subclass '" + SC->getNameInitAsString() + "'!");
}
}
const std::vector<Record*> &SCs = SC->getSuperClasses();
for (unsigned i = 0, e = SCs.size(); i != e; ++i) {
if (CurRec->isSubClassOf(SCs[i]))
return Error(SubClass.RefLoc,
"Already subclass of '" + SCs[i]->getName() + "'!\n");
CurRec->addSuperClass(SCs[i]);
}
if (CurRec->isSubClassOf(SC))
return Error(SubClass.RefLoc,
"Already subclass of '" + SC->getName() + "'!\n");
CurRec->addSuperClass(SC);
return false;
}
bool TGParser::AddSubMultiClass(MultiClass *CurMC,
SubMultiClassReference &SubMultiClass) {
MultiClass *SMC = SubMultiClass.MC;
Record *CurRec = &CurMC->Rec;
const std::vector<RecordVal> &MCVals = CurRec->getValues();
const std::vector<RecordVal> &SMCVals = SMC->Rec.getValues();
for (unsigned i = 0, e = SMCVals.size(); i != e; ++i)
if (AddValue(CurRec, SubMultiClass.RefLoc, SMCVals[i]))
return true;
int newDefStart = CurMC->DefPrototypes.size();
for (MultiClass::RecordVector::const_iterator i = SMC->DefPrototypes.begin(),
iend = SMC->DefPrototypes.end();
i != iend;
++i) {
Record *NewDef = new Record(**i);
for (unsigned i = 0, e = MCVals.size(); i != e; ++i)
if (AddValue(NewDef, SubMultiClass.RefLoc, MCVals[i]))
return true;
CurMC->DefPrototypes.push_back(NewDef);
}
const std::vector<Init *> &SMCTArgs = SMC->Rec.getTemplateArgs();
if (SMCTArgs.size() < SubMultiClass.TemplateArgs.size())
return Error(SubMultiClass.RefLoc,
"More template args specified than expected");
for (unsigned i = 0, e = SMCTArgs.size(); i != e; ++i) {
if (i < SubMultiClass.TemplateArgs.size()) {
if (SetValue(CurRec, SubMultiClass.RefLoc, SMCTArgs[i],
std::vector<unsigned>(),
SubMultiClass.TemplateArgs[i]))
return true;
CurRec->resolveReferencesTo(CurRec->getValue(SMCTArgs[i]));
CurRec->removeValue(SMCTArgs[i]);
for (MultiClass::RecordVector::iterator j =
CurMC->DefPrototypes.begin() + newDefStart,
jend = CurMC->DefPrototypes.end();
j != jend;
++j) {
Record *Def = *j;
if (SetValue(Def, SubMultiClass.RefLoc, SMCTArgs[i],
std::vector<unsigned>(),
SubMultiClass.TemplateArgs[i]))
return true;
Def->resolveReferencesTo(Def->getValue(SMCTArgs[i]));
Def->removeValue(SMCTArgs[i]);
}
} else if (!CurRec->getValue(SMCTArgs[i])->getValue()->isComplete()) {
return Error(SubMultiClass.RefLoc,
"Value not specified for template argument #"
+ utostr(i) + " (" + SMCTArgs[i]->getAsUnquotedString()
+ ") of subclass '" + SMC->Rec.getNameInitAsString() + "'!");
}
}
return false;
}
bool TGParser::ProcessForeachDefs(Record *CurRec, MultiClass *CurMultiClass,
SMLoc Loc) {
IterSet IterVals;
for (LoopVector::iterator Loop = Loops.begin(), LoopEnd = Loops.end();
Loop != LoopEnd;
++Loop) {
if (ProcessForeachDefs(CurRec, CurMultiClass, Loc,
IterVals, *Loop, Loop+1)) {
Error(Loc,
"Could not process loops for def " + CurRec->getNameInitAsString());
return true;
}
}
return false;
}
bool TGParser::ProcessForeachDefs(Record *CurRec, MultiClass *CurMultiClass,
SMLoc Loc, IterSet &IterVals,
ForeachLoop &CurLoop,
LoopVector::iterator NextLoop) {
Init *IterVar = CurLoop.IterVar;
ListInit *List = dynamic_cast<ListInit *>(CurLoop.ListValue);
if (List == 0) {
Error(Loc, "Loop list is not a list");
return true;
}
for (int64_t i = 0; i < List->getSize(); ++i) {
Init *ItemVal = List->resolveListElementReference(*CurRec, 0, i);
IterVals.push_back(IterRecord(IterVar, ItemVal));
if (IterVals.size() == Loops.size()) {
Record *IterRec = new Record(*CurRec);
for (IterSet::iterator i = IterVals.begin(), iend = IterVals.end();
i != iend;
++i) {
VarInit *IterVar = dynamic_cast<VarInit *>(i->IterVar);
if (IterVar == 0) {
Error(Loc, "foreach iterator is unresolved");
return true;
}
TypedInit *IVal = dynamic_cast<TypedInit *>(i->IterValue);
if (IVal == 0) {
Error(Loc, "foreach iterator value is untyped");
return true;
}
IterRec->addValue(RecordVal(IterVar->getName(), IVal->getType(), false));
if (SetValue(IterRec, Loc, IterVar->getName(),
std::vector<unsigned>(), IVal)) {
Error(Loc, "when instantiating this def");
return true;
}
IterRec->resolveReferencesTo(IterRec->getValue(IterVar->getName()));
IterRec->removeValue(IterVar->getName());
}
if (Records.getDef(IterRec->getNameInitAsString())) {
Error(Loc, "def already exists: " + IterRec->getNameInitAsString());
return true;
}
Records.addDef(IterRec);
IterRec->resolveReferences();
}
if (NextLoop != Loops.end()) {
if (ProcessForeachDefs(CurRec, CurMultiClass, Loc, IterVals, *NextLoop,
NextLoop+1)) {
Error(Loc,
"Could not process loops for def " +
CurRec->getNameInitAsString());
return true;
}
}
IterVals.pop_back();
}
return false;
}
static bool isObjectStart(tgtok::TokKind K) {
return K == tgtok::Class || K == tgtok::Def ||
K == tgtok::Defm || K == tgtok::Let ||
K == tgtok::MultiClass || K == tgtok::Foreach;
}
static std::string GetNewAnonymousName() {
static unsigned AnonCounter = 0;
return "anonymous."+utostr(AnonCounter++);
}
Init *TGParser::ParseObjectName(MultiClass *CurMultiClass) {
switch (Lex.getCode()) {
case tgtok::colon:
case tgtok::semi:
case tgtok::l_brace:
return StringInit::get(GetNewAnonymousName());
default:
break;
}
Record *CurRec = 0;
if (CurMultiClass)
CurRec = &CurMultiClass->Rec;
RecTy *Type = 0;
if (CurRec) {
const TypedInit *CurRecName =
dynamic_cast<const TypedInit *>(CurRec->getNameInit());
if (!CurRecName) {
TokError("Record name is not typed!");
return 0;
}
Type = CurRecName->getType();
}
return ParseValue(CurRec, Type, ParseNameMode);
}
Record *TGParser::ParseClassID() {
if (Lex.getCode() != tgtok::Id) {
TokError("expected name for ClassID");
return 0;
}
Record *Result = Records.getClass(Lex.getCurStrVal());
if (Result == 0)
TokError("Couldn't find class '" + Lex.getCurStrVal() + "'");
Lex.Lex();
return Result;
}
MultiClass *TGParser::ParseMultiClassID() {
if (Lex.getCode() != tgtok::Id) {
TokError("expected name for ClassID");
return 0;
}
MultiClass *Result = MultiClasses[Lex.getCurStrVal()];
if (Result == 0)
TokError("Couldn't find class '" + Lex.getCurStrVal() + "'");
Lex.Lex();
return Result;
}
Record *TGParser::ParseDefmID() {
if (Lex.getCode() != tgtok::Id) {
TokError("expected multiclass name");
return 0;
}
MultiClass *MC = MultiClasses[Lex.getCurStrVal()];
if (MC == 0) {
TokError("Couldn't find multiclass '" + Lex.getCurStrVal() + "'");
return 0;
}
Lex.Lex();
return &MC->Rec;
}
SubClassReference TGParser::
ParseSubClassReference(Record *CurRec, bool isDefm) {
SubClassReference Result;
Result.RefLoc = Lex.getLoc();
if (isDefm)
Result.Rec = ParseDefmID();
else
Result.Rec = ParseClassID();
if (Result.Rec == 0) return Result;
if (Lex.getCode() != tgtok::less)
return Result;
Lex.Lex();
if (Lex.getCode() == tgtok::greater) {
TokError("subclass reference requires a non-empty list of template values");
Result.Rec = 0;
return Result;
}
Result.TemplateArgs = ParseValueList(CurRec, Result.Rec);
if (Result.TemplateArgs.empty()) {
Result.Rec = 0; return Result;
}
if (Lex.getCode() != tgtok::greater) {
TokError("expected '>' in template value list");
Result.Rec = 0;
return Result;
}
Lex.Lex();
return Result;
}
SubMultiClassReference TGParser::
ParseSubMultiClassReference(MultiClass *CurMC) {
SubMultiClassReference Result;
Result.RefLoc = Lex.getLoc();
Result.MC = ParseMultiClassID();
if (Result.MC == 0) return Result;
if (Lex.getCode() != tgtok::less)
return Result;
Lex.Lex();
if (Lex.getCode() == tgtok::greater) {
TokError("subclass reference requires a non-empty list of template values");
Result.MC = 0;
return Result;
}
Result.TemplateArgs = ParseValueList(&CurMC->Rec, &Result.MC->Rec);
if (Result.TemplateArgs.empty()) {
Result.MC = 0; return Result;
}
if (Lex.getCode() != tgtok::greater) {
TokError("expected '>' in template value list");
Result.MC = 0;
return Result;
}
Lex.Lex();
return Result;
}
bool TGParser::ParseRangePiece(std::vector<unsigned> &Ranges) {
if (Lex.getCode() != tgtok::IntVal) {
TokError("expected integer or bitrange");
return true;
}
int64_t Start = Lex.getCurIntVal();
int64_t End;
if (Start < 0)
return TokError("invalid range, cannot be negative");
switch (Lex.Lex()) { default:
Ranges.push_back(Start);
return false;
case tgtok::minus:
if (Lex.Lex() != tgtok::IntVal) {
TokError("expected integer value as end of range");
return true;
}
End = Lex.getCurIntVal();
break;
case tgtok::IntVal:
End = -Lex.getCurIntVal();
break;
}
if (End < 0)
return TokError("invalid range, cannot be negative");
Lex.Lex();
if (Start < End) {
for (; Start <= End; ++Start)
Ranges.push_back(Start);
} else {
for (; Start >= End; --Start)
Ranges.push_back(Start);
}
return false;
}
std::vector<unsigned> TGParser::ParseRangeList() {
std::vector<unsigned> Result;
if (ParseRangePiece(Result))
return std::vector<unsigned>();
while (Lex.getCode() == tgtok::comma) {
Lex.Lex();
if (ParseRangePiece(Result))
return std::vector<unsigned>();
}
return Result;
}
bool TGParser::ParseOptionalRangeList(std::vector<unsigned> &Ranges) {
if (Lex.getCode() != tgtok::less)
return false;
SMLoc StartLoc = Lex.getLoc();
Lex.Lex();
Ranges = ParseRangeList();
if (Ranges.empty()) return true;
if (Lex.getCode() != tgtok::greater) {
TokError("expected '>' at end of range list");
return Error(StartLoc, "to match this '<'");
}
Lex.Lex(); return false;
}
bool TGParser::ParseOptionalBitList(std::vector<unsigned> &Ranges) {
if (Lex.getCode() != tgtok::l_brace)
return false;
SMLoc StartLoc = Lex.getLoc();
Lex.Lex();
Ranges = ParseRangeList();
if (Ranges.empty()) return true;
if (Lex.getCode() != tgtok::r_brace) {
TokError("expected '}' at end of bit list");
return Error(StartLoc, "to match this '{'");
}
Lex.Lex(); return false;
}
RecTy *TGParser::ParseType() {
switch (Lex.getCode()) {
default: TokError("Unknown token when expecting a type"); return 0;
case tgtok::String: Lex.Lex(); return StringRecTy::get();
case tgtok::Code: Lex.Lex(); return StringRecTy::get();
case tgtok::Bit: Lex.Lex(); return BitRecTy::get();
case tgtok::Int: Lex.Lex(); return IntRecTy::get();
case tgtok::Dag: Lex.Lex(); return DagRecTy::get();
case tgtok::Id:
if (Record *R = ParseClassID()) return RecordRecTy::get(R);
return 0;
case tgtok::Bits: {
if (Lex.Lex() != tgtok::less) { TokError("expected '<' after bits type");
return 0;
}
if (Lex.Lex() != tgtok::IntVal) { TokError("expected integer in bits<n> type");
return 0;
}
uint64_t Val = Lex.getCurIntVal();
if (Lex.Lex() != tgtok::greater) { TokError("expected '>' at end of bits<n> type");
return 0;
}
Lex.Lex(); return BitsRecTy::get(Val);
}
case tgtok::List: {
if (Lex.Lex() != tgtok::less) { TokError("expected '<' after list type");
return 0;
}
Lex.Lex(); RecTy *SubType = ParseType();
if (SubType == 0) return 0;
if (Lex.getCode() != tgtok::greater) {
TokError("expected '>' at end of list<ty> type");
return 0;
}
Lex.Lex(); return ListRecTy::get(SubType);
}
}
}
Init *TGParser::ParseIDValue(Record *CurRec, IDParseMode Mode) {
assert(Lex.getCode() == tgtok::Id && "Expected ID in ParseIDValue");
std::string Name = Lex.getCurStrVal();
SMLoc Loc = Lex.getLoc();
Lex.Lex();
return ParseIDValue(CurRec, Name, Loc);
}
Init *TGParser::ParseIDValue(Record *CurRec,
const std::string &Name, SMLoc NameLoc,
IDParseMode Mode) {
if (CurRec) {
if (const RecordVal *RV = CurRec->getValue(Name))
return VarInit::get(Name, RV->getType());
Init *TemplateArgName = QualifyName(*CurRec, CurMultiClass, Name, ":");
if (CurMultiClass)
TemplateArgName = QualifyName(CurMultiClass->Rec, CurMultiClass, Name,
"::");
if (CurRec->isTemplateArg(TemplateArgName)) {
const RecordVal *RV = CurRec->getValue(TemplateArgName);
assert(RV && "Template arg doesn't exist??");
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??");
return VarInit::get(MCName, RV->getType());
}
}
for (LoopVector::iterator i = Loops.begin(), iend = Loops.end();
i != iend;
++i) {
VarInit *IterVar = dynamic_cast<VarInit *>(i->IterVar);
if (IterVar && IterVar->getName() == Name)
return IterVar;
}
if (Mode == ParseNameMode)
return StringInit::get(Name);
if (Record *D = Records.getDef(Name))
return DefInit::get(D);
if (Mode == ParseValueMode) {
Error(NameLoc, "Variable not defined: '" + Name + "'");
return 0;
}
return StringInit::get(Name);
}
Init *TGParser::ParseOperation(Record *CurRec) {
switch (Lex.getCode()) {
default:
TokError("unknown operation");
return 0;
case tgtok::XHead:
case tgtok::XTail:
case tgtok::XEmpty:
case tgtok::XCast: { UnOpInit::UnaryOp Code;
RecTy *Type = 0;
switch (Lex.getCode()) {
default: llvm_unreachable("Unhandled code!");
case tgtok::XCast:
Lex.Lex(); Code = UnOpInit::CAST;
Type = ParseOperatorType();
if (Type == 0) {
TokError("did not get type for unary operator");
return 0;
}
break;
case tgtok::XHead:
Lex.Lex(); Code = UnOpInit::HEAD;
break;
case tgtok::XTail:
Lex.Lex(); Code = UnOpInit::TAIL;
break;
case tgtok::XEmpty:
Lex.Lex(); Code = UnOpInit::EMPTY;
Type = IntRecTy::get();
break;
}
if (Lex.getCode() != tgtok::l_paren) {
TokError("expected '(' after unary operator");
return 0;
}
Lex.Lex();
Init *LHS = ParseValue(CurRec);
if (LHS == 0) return 0;
if (Code == UnOpInit::HEAD
|| Code == UnOpInit::TAIL
|| Code == UnOpInit::EMPTY) {
ListInit *LHSl = dynamic_cast<ListInit*>(LHS);
StringInit *LHSs = dynamic_cast<StringInit*>(LHS);
TypedInit *LHSt = dynamic_cast<TypedInit*>(LHS);
if (LHSl == 0 && LHSs == 0 && LHSt == 0) {
TokError("expected list or string type argument in unary operator");
return 0;
}
if (LHSt) {
ListRecTy *LType = dynamic_cast<ListRecTy*>(LHSt->getType());
StringRecTy *SType = dynamic_cast<StringRecTy*>(LHSt->getType());
if (LType == 0 && SType == 0) {
TokError("expected list or string type argumnet in unary operator");
return 0;
}
}
if (Code == UnOpInit::HEAD
|| Code == UnOpInit::TAIL) {
if (LHSl == 0 && LHSt == 0) {
TokError("expected list type argumnet in unary operator");
return 0;
}
if (LHSl && LHSl->getSize() == 0) {
TokError("empty list argument in unary operator");
return 0;
}
if (LHSl) {
Init *Item = LHSl->getElement(0);
TypedInit *Itemt = dynamic_cast<TypedInit*>(Item);
if (Itemt == 0) {
TokError("untyped list element in unary operator");
return 0;
}
if (Code == UnOpInit::HEAD) {
Type = Itemt->getType();
} else {
Type = ListRecTy::get(Itemt->getType());
}
} else {
assert(LHSt && "expected list type argument in unary operator");
ListRecTy *LType = dynamic_cast<ListRecTy*>(LHSt->getType());
if (LType == 0) {
TokError("expected list type argumnet in unary operator");
return 0;
}
if (Code == UnOpInit::HEAD) {
Type = LType->getElementType();
} else {
Type = LType;
}
}
}
}
if (Lex.getCode() != tgtok::r_paren) {
TokError("expected ')' in unary operator");
return 0;
}
Lex.Lex(); return (UnOpInit::get(Code, LHS, Type))->Fold(CurRec, CurMultiClass);
}
case tgtok::XConcat:
case tgtok::XSRA:
case tgtok::XSRL:
case tgtok::XSHL:
case tgtok::XEq:
case tgtok::XStrConcat: { tgtok::TokKind OpTok = Lex.getCode();
SMLoc OpLoc = Lex.getLoc();
Lex.Lex();
BinOpInit::BinaryOp Code;
RecTy *Type = 0;
switch (OpTok) {
default: llvm_unreachable("Unhandled code!");
case tgtok::XConcat: Code = BinOpInit::CONCAT;Type = DagRecTy::get(); break;
case tgtok::XSRA: Code = BinOpInit::SRA; Type = IntRecTy::get(); break;
case tgtok::XSRL: Code = BinOpInit::SRL; Type = IntRecTy::get(); break;
case tgtok::XSHL: Code = BinOpInit::SHL; Type = IntRecTy::get(); break;
case tgtok::XEq: Code = BinOpInit::EQ; Type = BitRecTy::get(); break;
case tgtok::XStrConcat:
Code = BinOpInit::STRCONCAT;
Type = StringRecTy::get();
break;
}
if (Lex.getCode() != tgtok::l_paren) {
TokError("expected '(' after binary operator");
return 0;
}
Lex.Lex();
SmallVector<Init*, 2> InitList;
InitList.push_back(ParseValue(CurRec));
if (InitList.back() == 0) return 0;
while (Lex.getCode() == tgtok::comma) {
Lex.Lex();
InitList.push_back(ParseValue(CurRec));
if (InitList.back() == 0) return 0;
}
if (Lex.getCode() != tgtok::r_paren) {
TokError("expected ')' in operator");
return 0;
}
Lex.Lex();
if (Code == BinOpInit::STRCONCAT) {
while (InitList.size() > 2) {
Init *RHS = InitList.pop_back_val();
RHS = (BinOpInit::get(Code, InitList.back(), RHS, Type))
->Fold(CurRec, CurMultiClass);
InitList.back() = RHS;
}
}
if (InitList.size() == 2)
return (BinOpInit::get(Code, InitList[0], InitList[1], Type))
->Fold(CurRec, CurMultiClass);
Error(OpLoc, "expected two operands to operator");
return 0;
}
case tgtok::XIf:
case tgtok::XForEach:
case tgtok::XSubst: { TernOpInit::TernaryOp Code;
RecTy *Type = 0;
tgtok::TokKind LexCode = Lex.getCode();
Lex.Lex(); switch (LexCode) {
default: llvm_unreachable("Unhandled code!");
case tgtok::XIf:
Code = TernOpInit::IF;
break;
case tgtok::XForEach:
Code = TernOpInit::FOREACH;
break;
case tgtok::XSubst:
Code = TernOpInit::SUBST;
break;
}
if (Lex.getCode() != tgtok::l_paren) {
TokError("expected '(' after ternary operator");
return 0;
}
Lex.Lex();
Init *LHS = ParseValue(CurRec);
if (LHS == 0) return 0;
if (Lex.getCode() != tgtok::comma) {
TokError("expected ',' in ternary operator");
return 0;
}
Lex.Lex();
Init *MHS = ParseValue(CurRec);
if (MHS == 0) return 0;
if (Lex.getCode() != tgtok::comma) {
TokError("expected ',' in ternary operator");
return 0;
}
Lex.Lex();
Init *RHS = ParseValue(CurRec);
if (RHS == 0) return 0;
if (Lex.getCode() != tgtok::r_paren) {
TokError("expected ')' in binary operator");
return 0;
}
Lex.Lex();
switch (LexCode) {
default: llvm_unreachable("Unhandled code!");
case tgtok::XIf: {
TypedInit *MHSt = dynamic_cast<TypedInit*>(MHS);
TypedInit *RHSt = dynamic_cast<TypedInit*>(RHS);
RecTy *MHSTy = 0;
RecTy *RHSTy = 0;
if (MHSt == 0 && RHSt == 0) {
BitsInit *MHSbits = dynamic_cast<BitsInit*>(MHS);
BitsInit *RHSbits = dynamic_cast<BitsInit*>(RHS);
if (MHSbits && RHSbits &&
MHSbits->getNumBits() == RHSbits->getNumBits()) {
Type = BitRecTy::get();
break;
} else {
BitInit *MHSbit = dynamic_cast<BitInit*>(MHS);
BitInit *RHSbit = dynamic_cast<BitInit*>(RHS);
if (MHSbit && RHSbit) {
Type = BitRecTy::get();
break;
}
}
} else if (MHSt != 0 && RHSt != 0) {
MHSTy = MHSt->getType();
RHSTy = RHSt->getType();
}
if (!MHSTy || !RHSTy) {
TokError("could not get type for !if");
return 0;
}
if (MHSTy->typeIsConvertibleTo(RHSTy)) {
Type = RHSTy;
} else if (RHSTy->typeIsConvertibleTo(MHSTy)) {
Type = MHSTy;
} else {
TokError("inconsistent types for !if");
return 0;
}
break;
}
case tgtok::XForEach: {
TypedInit *MHSt = dynamic_cast<TypedInit *>(MHS);
if (MHSt == 0) {
TokError("could not get type for !foreach");
return 0;
}
Type = MHSt->getType();
break;
}
case tgtok::XSubst: {
TypedInit *RHSt = dynamic_cast<TypedInit *>(RHS);
if (RHSt == 0) {
TokError("could not get type for !subst");
return 0;
}
Type = RHSt->getType();
break;
}
}
return (TernOpInit::get(Code, LHS, MHS, RHS, Type))->Fold(CurRec,
CurMultiClass);
}
}
}
RecTy *TGParser::ParseOperatorType() {
RecTy *Type = 0;
if (Lex.getCode() != tgtok::less) {
TokError("expected type name for operator");
return 0;
}
Lex.Lex();
Type = ParseType();
if (Type == 0) {
TokError("expected type name for operator");
return 0;
}
if (Lex.getCode() != tgtok::greater) {
TokError("expected type name for operator");
return 0;
}
Lex.Lex();
return Type;
}
Init *TGParser::ParseSimpleValue(Record *CurRec, RecTy *ItemType,
IDParseMode Mode) {
Init *R = 0;
switch (Lex.getCode()) {
default: TokError("Unknown token when parsing a value"); break;
case tgtok::paste:
Lex.Lex(); return ParseSimpleValue(CurRec, ItemType, Mode);
case tgtok::IntVal: R = IntInit::get(Lex.getCurIntVal()); Lex.Lex(); break;
case tgtok::StrVal: {
std::string Val = Lex.getCurStrVal();
Lex.Lex();
while (Lex.getCode() == tgtok::StrVal) {
Val += Lex.getCurStrVal();
Lex.Lex();
}
R = StringInit::get(Val);
break;
}
case tgtok::CodeFragment:
R = StringInit::get(Lex.getCurStrVal());
Lex.Lex();
break;
case tgtok::question:
R = UnsetInit::get();
Lex.Lex();
break;
case tgtok::Id: {
SMLoc NameLoc = Lex.getLoc();
std::string Name = Lex.getCurStrVal();
if (Lex.Lex() != tgtok::less) return ParseIDValue(CurRec, Name, NameLoc, Mode);
if (Lex.Lex() == tgtok::greater) {
TokError("expected non-empty value list");
return 0;
}
Record *Class = Records.getClass(Name);
if (!Class) {
Error(NameLoc, "Expected a class name, got '" + Name + "'");
return 0;
}
std::vector<Init*> ValueList = ParseValueList(CurRec, Class);
if (ValueList.empty()) return 0;
if (Lex.getCode() != tgtok::greater) {
TokError("expected '>' at end of value list");
return 0;
}
Lex.Lex();
static unsigned AnonCounter = 0;
Record *NewRec = new Record("anonymous.val."+utostr(AnonCounter++),
NameLoc,
Records);
SubClassReference SCRef;
SCRef.RefLoc = NameLoc;
SCRef.Rec = Class;
SCRef.TemplateArgs = ValueList;
if (AddSubClass(NewRec, SCRef))
return 0;
NewRec->resolveReferences();
Records.addDef(NewRec);
return DefInit::get(NewRec);
}
case tgtok::l_brace: { SMLoc BraceLoc = Lex.getLoc();
Lex.Lex(); std::vector<Init*> Vals;
if (Lex.getCode() != tgtok::r_brace) {
Vals = ParseValueList(CurRec);
if (Vals.empty()) return 0;
}
if (Lex.getCode() != tgtok::r_brace) {
TokError("expected '}' at end of bit list value");
return 0;
}
Lex.Lex();
SmallVector<Init *, 16> NewBits(Vals.size());
for (unsigned i = 0, e = Vals.size(); i != e; ++i) {
Init *Bit = Vals[i]->convertInitializerTo(BitRecTy::get());
if (Bit == 0) {
Error(BraceLoc, "Element #" + utostr(i) + " (" + Vals[i]->getAsString()+
") is not convertable to a bit");
return 0;
}
NewBits[Vals.size()-i-1] = Bit;
}
return BitsInit::get(NewBits);
}
case tgtok::l_square: { Lex.Lex(); std::vector<Init*> Vals;
RecTy *DeducedEltTy = 0;
ListRecTy *GivenListTy = 0;
if (ItemType != 0) {
ListRecTy *ListType = dynamic_cast<ListRecTy*>(ItemType);
if (ListType == 0) {
std::stringstream s;
s << "Type mismatch for list, expected list type, got "
<< ItemType->getAsString();
TokError(s.str());
return 0;
}
GivenListTy = ListType;
}
if (Lex.getCode() != tgtok::r_square) {
Vals = ParseValueList(CurRec, 0,
GivenListTy ? GivenListTy->getElementType() : 0);
if (Vals.empty()) return 0;
}
if (Lex.getCode() != tgtok::r_square) {
TokError("expected ']' at end of list value");
return 0;
}
Lex.Lex();
RecTy *GivenEltTy = 0;
if (Lex.getCode() == tgtok::less) {
Lex.Lex();
GivenEltTy = ParseType();
if (GivenEltTy == 0) {
return 0;
}
if (Lex.getCode() != tgtok::greater) {
TokError("expected '>' at end of list element type");
return 0;
}
Lex.Lex(); }
RecTy *EltTy = 0;
for (std::vector<Init *>::iterator i = Vals.begin(), ie = Vals.end();
i != ie;
++i) {
TypedInit *TArg = dynamic_cast<TypedInit*>(*i);
if (TArg == 0) {
TokError("Untyped list element");
return 0;
}
if (EltTy != 0) {
EltTy = resolveTypes(EltTy, TArg->getType());
if (EltTy == 0) {
TokError("Incompatible types in list elements");
return 0;
}
} else {
EltTy = TArg->getType();
}
}
if (GivenEltTy != 0) {
if (EltTy != 0) {
if (!EltTy->typeIsConvertibleTo(GivenEltTy)) {
TokError("Incompatible types in list elements");
return 0;
}
}
EltTy = GivenEltTy;
}
if (EltTy == 0) {
if (ItemType == 0) {
TokError("No type for list");
return 0;
}
DeducedEltTy = GivenListTy->getElementType();
} else {
if (GivenListTy) {
if (!EltTy->typeIsConvertibleTo(GivenListTy->getElementType())) {
TokError("Element type mismatch for list");
return 0;
}
}
DeducedEltTy = EltTy;
}
return ListInit::get(Vals, DeducedEltTy);
}
case tgtok::l_paren: { Lex.Lex(); if (Lex.getCode() != tgtok::Id && Lex.getCode() != tgtok::XCast) {
TokError("expected identifier in dag init");
return 0;
}
Init *Operator = ParseValue(CurRec);
if (Operator == 0) return 0;
std::string OperatorName;
if (Lex.getCode() == tgtok::colon) {
if (Lex.Lex() != tgtok::VarName) { TokError("expected variable name in dag operator");
return 0;
}
OperatorName = Lex.getCurStrVal();
Lex.Lex(); }
std::vector<std::pair<llvm::Init*, std::string> > DagArgs;
if (Lex.getCode() != tgtok::r_paren) {
DagArgs = ParseDagArgList(CurRec);
if (DagArgs.empty()) return 0;
}
if (Lex.getCode() != tgtok::r_paren) {
TokError("expected ')' in dag init");
return 0;
}
Lex.Lex();
return DagInit::get(Operator, OperatorName, DagArgs);
}
case tgtok::XHead:
case tgtok::XTail:
case tgtok::XEmpty:
case tgtok::XCast: case tgtok::XConcat:
case tgtok::XSRA:
case tgtok::XSRL:
case tgtok::XSHL:
case tgtok::XEq:
case tgtok::XStrConcat: case tgtok::XIf:
case tgtok::XForEach:
case tgtok::XSubst: { return ParseOperation(CurRec);
}
}
return R;
}
Init *TGParser::ParseValue(Record *CurRec, RecTy *ItemType, IDParseMode Mode) {
Init *Result = ParseSimpleValue(CurRec, ItemType, Mode);
if (Result == 0) return 0;
while (1) {
switch (Lex.getCode()) {
default: return Result;
case tgtok::l_brace: {
if (Mode == ParseNameMode || Mode == ParseForeachMode)
return Result;
SMLoc CurlyLoc = Lex.getLoc();
Lex.Lex(); std::vector<unsigned> Ranges = ParseRangeList();
if (Ranges.empty()) return 0;
std::reverse(Ranges.begin(), Ranges.end());
Result = Result->convertInitializerBitRange(Ranges);
if (Result == 0) {
Error(CurlyLoc, "Invalid bit range for value");
return 0;
}
if (Lex.getCode() != tgtok::r_brace) {
TokError("expected '}' at end of bit range list");
return 0;
}
Lex.Lex();
break;
}
case tgtok::l_square: {
SMLoc SquareLoc = Lex.getLoc();
Lex.Lex(); std::vector<unsigned> Ranges = ParseRangeList();
if (Ranges.empty()) return 0;
Result = Result->convertInitListSlice(Ranges);
if (Result == 0) {
Error(SquareLoc, "Invalid range for list slice");
return 0;
}
if (Lex.getCode() != tgtok::r_square) {
TokError("expected ']' at end of list slice");
return 0;
}
Lex.Lex();
break;
}
case tgtok::period:
if (Lex.Lex() != tgtok::Id) { TokError("expected field identifier after '.'");
return 0;
}
if (!Result->getFieldType(Lex.getCurStrVal())) {
TokError("Cannot access field '" + Lex.getCurStrVal() + "' of value '" +
Result->getAsString() + "'");
return 0;
}
Result = FieldInit::get(Result, Lex.getCurStrVal());
Lex.Lex(); break;
case tgtok::paste:
SMLoc PasteLoc = Lex.getLoc();
TypedInit *LHS = dynamic_cast<TypedInit *>(Result);
if (!LHS) {
Error(PasteLoc, "LHS of paste is not typed!");
return 0;
}
if (LHS->getType() != StringRecTy::get()) {
LHS = UnOpInit::get(UnOpInit::CAST, LHS, StringRecTy::get());
}
TypedInit *RHS = 0;
Lex.Lex(); switch (Lex.getCode()) {
case tgtok::colon:
case tgtok::semi:
case tgtok::l_brace:
RHS = StringInit::get("");
break;
default:
Init *RHSResult = ParseValue(CurRec, ItemType, ParseNameMode);
RHS = dynamic_cast<TypedInit *>(RHSResult);
if (!RHS) {
Error(PasteLoc, "RHS of paste is not typed!");
return 0;
}
if (RHS->getType() != StringRecTy::get()) {
RHS = UnOpInit::get(UnOpInit::CAST, RHS, StringRecTy::get());
}
break;
}
Result = BinOpInit::get(BinOpInit::STRCONCAT, LHS, RHS,
StringRecTy::get())->Fold(CurRec, CurMultiClass);
break;
}
}
}
std::vector<std::pair<llvm::Init*, std::string> >
TGParser::ParseDagArgList(Record *CurRec) {
std::vector<std::pair<llvm::Init*, std::string> > Result;
while (1) {
Init *Val = ParseValue(CurRec);
if (Val == 0) return std::vector<std::pair<llvm::Init*, std::string> >();
std::string VarName;
if (Lex.getCode() == tgtok::colon) {
if (Lex.Lex() != tgtok::VarName) { TokError("expected variable name in dag literal");
return std::vector<std::pair<llvm::Init*, std::string> >();
}
VarName = Lex.getCurStrVal();
Lex.Lex(); }
Result.push_back(std::make_pair(Val, VarName));
if (Lex.getCode() != tgtok::comma) break;
Lex.Lex(); }
return Result;
}
std::vector<Init*> TGParser::ParseValueList(Record *CurRec, Record *ArgsRec,
RecTy *EltTy) {
std::vector<Init*> Result;
RecTy *ItemType = EltTy;
unsigned int ArgN = 0;
if (ArgsRec != 0 && EltTy == 0) {
const std::vector<Init *> &TArgs = ArgsRec->getTemplateArgs();
if (!TArgs.size()) {
TokError("template argument provided to non-template class");
return std::vector<Init*>();
}
const RecordVal *RV = ArgsRec->getValue(TArgs[ArgN]);
if (!RV) {
errs() << "Cannot find template arg " << ArgN << " (" << TArgs[ArgN]
<< ")\n";
}
assert(RV && "Template argument record not found??");
ItemType = RV->getType();
++ArgN;
}
Result.push_back(ParseValue(CurRec, ItemType));
if (Result.back() == 0) return std::vector<Init*>();
while (Lex.getCode() == tgtok::comma) {
Lex.Lex();
if (ArgsRec != 0 && EltTy == 0) {
const std::vector<Init *> &TArgs = ArgsRec->getTemplateArgs();
if (ArgN >= TArgs.size()) {
TokError("too many template arguments");
return std::vector<Init*>();
}
const RecordVal *RV = ArgsRec->getValue(TArgs[ArgN]);
assert(RV && "Template argument record not found??");
ItemType = RV->getType();
++ArgN;
}
Result.push_back(ParseValue(CurRec, ItemType));
if (Result.back() == 0) return std::vector<Init*>();
}
return Result;
}
Init *TGParser::ParseDeclaration(Record *CurRec,
bool ParsingTemplateArgs) {
bool HasField = Lex.getCode() == tgtok::Field;
if (HasField) Lex.Lex();
RecTy *Type = ParseType();
if (Type == 0) return 0;
if (Lex.getCode() != tgtok::Id) {
TokError("Expected identifier in declaration");
return 0;
}
SMLoc IdLoc = Lex.getLoc();
Init *DeclName = StringInit::get(Lex.getCurStrVal());
Lex.Lex();
if (ParsingTemplateArgs) {
if (CurRec) {
DeclName = QualifyName(*CurRec, CurMultiClass, DeclName, ":");
} else {
assert(CurMultiClass);
}
if (CurMultiClass)
DeclName = QualifyName(CurMultiClass->Rec, CurMultiClass, DeclName,
"::");
}
if (AddValue(CurRec, IdLoc, RecordVal(DeclName, Type, HasField)))
return 0;
if (Lex.getCode() == tgtok::equal) {
Lex.Lex();
SMLoc ValLoc = Lex.getLoc();
Init *Val = ParseValue(CurRec, Type);
if (Val == 0 ||
SetValue(CurRec, ValLoc, DeclName, std::vector<unsigned>(), Val))
return 0;
}
return DeclName;
}
Init *TGParser::ParseForeachDeclaration(Init *&ForeachListValue) {
if (Lex.getCode() != tgtok::Id) {
TokError("Expected identifier in foreach declaration");
return 0;
}
Init *DeclName = StringInit::get(Lex.getCurStrVal());
Lex.Lex();
if (Lex.getCode() != tgtok::equal) {
TokError("Expected '=' in foreach declaration");
return 0;
}
Lex.Lex();
ForeachListValue = ParseValue(0, 0, ParseForeachMode);
TypedInit *TypedList = dynamic_cast<TypedInit *>(ForeachListValue);
if (TypedList == 0) {
TokError("Value list is untyped");
return 0;
}
RecTy *ValueType = TypedList->getType();
ListRecTy *ListType = dynamic_cast<ListRecTy *>(ValueType);
if (ListType == 0) {
TokError("Value list is not of list type");
return 0;
}
RecTy *IterType = ListType->getElementType();
VarInit *IterVar = VarInit::get(DeclName, IterType);
return IterVar;
}
bool TGParser::ParseTemplateArgList(Record *CurRec) {
assert(Lex.getCode() == tgtok::less && "Not a template arg list!");
Lex.Lex();
Record *TheRecToAddTo = CurRec ? CurRec : &CurMultiClass->Rec;
Init *TemplArg = ParseDeclaration(CurRec, true);
if (TemplArg == 0)
return true;
TheRecToAddTo->addTemplateArg(TemplArg);
while (Lex.getCode() == tgtok::comma) {
Lex.Lex();
TemplArg = ParseDeclaration(CurRec, true);
if (TemplArg == 0)
return true;
TheRecToAddTo->addTemplateArg(TemplArg);
}
if (Lex.getCode() != tgtok::greater)
return TokError("expected '>' at end of template argument list");
Lex.Lex(); return false;
}
bool TGParser::ParseBodyItem(Record *CurRec) {
if (Lex.getCode() != tgtok::Let) {
if (ParseDeclaration(CurRec, false) == 0)
return true;
if (Lex.getCode() != tgtok::semi)
return TokError("expected ';' after declaration");
Lex.Lex();
return false;
}
if (Lex.Lex() != tgtok::Id)
return TokError("expected field identifier after let");
SMLoc IdLoc = Lex.getLoc();
std::string FieldName = Lex.getCurStrVal();
Lex.Lex();
std::vector<unsigned> BitList;
if (ParseOptionalBitList(BitList))
return true;
std::reverse(BitList.begin(), BitList.end());
if (Lex.getCode() != tgtok::equal)
return TokError("expected '=' in let expression");
Lex.Lex();
RecordVal *Field = CurRec->getValue(FieldName);
if (Field == 0)
return TokError("Value '" + FieldName + "' unknown!");
RecTy *Type = Field->getType();
Init *Val = ParseValue(CurRec, Type);
if (Val == 0) return true;
if (Lex.getCode() != tgtok::semi)
return TokError("expected ';' after let expression");
Lex.Lex();
return SetValue(CurRec, IdLoc, FieldName, BitList, Val);
}
bool TGParser::ParseBody(Record *CurRec) {
if (Lex.getCode() == tgtok::semi) {
Lex.Lex();
return false;
}
if (Lex.getCode() != tgtok::l_brace)
return TokError("Expected ';' or '{' to start body");
Lex.Lex();
while (Lex.getCode() != tgtok::r_brace)
if (ParseBodyItem(CurRec))
return true;
Lex.Lex();
return false;
}
bool TGParser::ParseObjectBody(Record *CurRec) {
if (Lex.getCode() == tgtok::colon) {
Lex.Lex();
SubClassReference SubClass = ParseSubClassReference(CurRec, false);
while (1) {
if (SubClass.Rec == 0) return true;
if (AddSubClass(CurRec, SubClass))
return true;
if (Lex.getCode() != tgtok::comma) break;
Lex.Lex(); SubClass = ParseSubClassReference(CurRec, false);
}
}
for (unsigned i = 0, e = LetStack.size(); i != e; ++i)
for (unsigned j = 0, e = LetStack[i].size(); j != e; ++j)
if (SetValue(CurRec, LetStack[i][j].Loc, LetStack[i][j].Name,
LetStack[i][j].Bits, LetStack[i][j].Value))
return true;
return ParseBody(CurRec);
}
bool TGParser::ParseDef(MultiClass *CurMultiClass) {
SMLoc DefLoc = Lex.getLoc();
assert(Lex.getCode() == tgtok::Def && "Unknown tok");
Lex.Lex();
Record *CurRec = new Record(ParseObjectName(CurMultiClass), DefLoc, Records);
if (!CurMultiClass) {
if (Records.getDef(CurRec->getNameInitAsString())) {
Error(DefLoc, "def '" + CurRec->getNameInitAsString()
+ "' already defined");
return true;
}
Records.addDef(CurRec);
} else {
for (unsigned i = 0, e = CurMultiClass->DefPrototypes.size(); i != e; ++i)
if (CurMultiClass->DefPrototypes[i]->getNameInit()
== CurRec->getNameInit()) {
Error(DefLoc, "def '" + CurRec->getNameInitAsString() +
"' already defined in this multiclass!");
return true;
}
CurMultiClass->DefPrototypes.push_back(CurRec);
}
if (ParseObjectBody(CurRec))
return true;
if (CurMultiClass == 0) CurRec->resolveReferences();
assert(CurRec->getTemplateArgs().empty() && "How'd this get template args?");
if (CurMultiClass) {
const std::vector<Init *> &TArgs =
CurMultiClass->Rec.getTemplateArgs();
for (unsigned i = 0, e = TArgs.size(); i != e; ++i) {
const RecordVal *RV = CurMultiClass->Rec.getValue(TArgs[i]);
assert(RV && "Template arg doesn't exist?");
CurRec->addValue(*RV);
}
}
if (ProcessForeachDefs(CurRec, CurMultiClass, DefLoc)) {
Error(DefLoc,
"Could not process loops for def" + CurRec->getNameInitAsString());
return true;
}
return false;
}
bool TGParser::ParseForeach(MultiClass *CurMultiClass) {
assert(Lex.getCode() == tgtok::Foreach && "Unknown tok");
Lex.Lex();
Init *ListValue = 0;
Init *IterName = ParseForeachDeclaration(ListValue);
if (IterName == 0)
return TokError("expected declaration in for");
if (Lex.getCode() != tgtok::In)
return TokError("Unknown tok");
Lex.Lex();
Loops.push_back(ForeachLoop(IterName, ListValue));
if (Lex.getCode() != tgtok::l_brace) {
if (ParseObject(CurMultiClass))
return true;
}
else {
SMLoc BraceLoc = Lex.getLoc();
Lex.Lex();
if (ParseObjectList(CurMultiClass))
return true;
if (Lex.getCode() != tgtok::r_brace) {
TokError("expected '}' at end of foreach command");
return Error(BraceLoc, "to match this '{'");
}
Lex.Lex(); }
Loops.pop_back();
return false;
}
bool TGParser::ParseClass() {
assert(Lex.getCode() == tgtok::Class && "Unexpected token!");
Lex.Lex();
if (Lex.getCode() != tgtok::Id)
return TokError("expected class name after 'class' keyword");
Record *CurRec = Records.getClass(Lex.getCurStrVal());
if (CurRec) {
if (CurRec->getValues().size() > 1 || !CurRec->getSuperClasses().empty() ||
!CurRec->getTemplateArgs().empty())
return TokError("Class '" + CurRec->getNameInitAsString()
+ "' already defined");
} else {
CurRec = new Record(Lex.getCurStrVal(), Lex.getLoc(), Records);
Records.addClass(CurRec);
}
Lex.Lex();
if (Lex.getCode() == tgtok::less)
if (ParseTemplateArgList(CurRec))
return true;
return ParseObjectBody(CurRec);
}
std::vector<LetRecord> TGParser::ParseLetList() {
std::vector<LetRecord> Result;
while (1) {
if (Lex.getCode() != tgtok::Id) {
TokError("expected identifier in let definition");
return std::vector<LetRecord>();
}
std::string Name = Lex.getCurStrVal();
SMLoc NameLoc = Lex.getLoc();
Lex.Lex();
std::vector<unsigned> Bits;
if (ParseOptionalRangeList(Bits))
return std::vector<LetRecord>();
std::reverse(Bits.begin(), Bits.end());
if (Lex.getCode() != tgtok::equal) {
TokError("expected '=' in let expression");
return std::vector<LetRecord>();
}
Lex.Lex();
Init *Val = ParseValue(0);
if (Val == 0) return std::vector<LetRecord>();
Result.push_back(LetRecord(Name, Bits, Val, NameLoc));
if (Lex.getCode() != tgtok::comma)
return Result;
Lex.Lex(); }
}
bool TGParser::ParseTopLevelLet(MultiClass *CurMultiClass) {
assert(Lex.getCode() == tgtok::Let && "Unexpected token");
Lex.Lex();
std::vector<LetRecord> LetInfo = ParseLetList();
if (LetInfo.empty()) return true;
LetStack.push_back(LetInfo);
if (Lex.getCode() != tgtok::In)
return TokError("expected 'in' at end of top-level 'let'");
Lex.Lex();
if (Lex.getCode() != tgtok::l_brace) {
if (ParseObject(CurMultiClass))
return true;
} else { SMLoc BraceLoc = Lex.getLoc();
Lex.Lex();
if (ParseObjectList(CurMultiClass))
return true;
if (Lex.getCode() != tgtok::r_brace) {
TokError("expected '}' at end of top level let command");
return Error(BraceLoc, "to match this '{'");
}
Lex.Lex();
}
LetStack.pop_back();
return false;
}
bool TGParser::ParseMultiClass() {
assert(Lex.getCode() == tgtok::MultiClass && "Unexpected token");
Lex.Lex();
if (Lex.getCode() != tgtok::Id)
return TokError("expected identifier after multiclass for name");
std::string Name = Lex.getCurStrVal();
if (MultiClasses.count(Name))
return TokError("multiclass '" + Name + "' already defined");
CurMultiClass = MultiClasses[Name] = new MultiClass(Name,
Lex.getLoc(), Records);
Lex.Lex();
if (Lex.getCode() == tgtok::less)
if (ParseTemplateArgList(0))
return true;
bool inherits = false;
if (Lex.getCode() == tgtok::colon) {
inherits = true;
Lex.Lex();
SubMultiClassReference SubMultiClass =
ParseSubMultiClassReference(CurMultiClass);
while (1) {
if (SubMultiClass.MC == 0) return true;
if (AddSubMultiClass(CurMultiClass, SubMultiClass))
return true;
if (Lex.getCode() != tgtok::comma) break;
Lex.Lex(); SubMultiClass = ParseSubMultiClassReference(CurMultiClass);
}
}
if (Lex.getCode() != tgtok::l_brace) {
if (!inherits)
return TokError("expected '{' in multiclass definition");
else if (Lex.getCode() != tgtok::semi)
return TokError("expected ';' in multiclass definition");
else
Lex.Lex(); } else {
if (Lex.Lex() == tgtok::r_brace) return TokError("multiclass must contain at least one def");
while (Lex.getCode() != tgtok::r_brace) {
switch (Lex.getCode()) {
default:
return TokError("expected 'let', 'def' or 'defm' in multiclass body");
case tgtok::Let:
case tgtok::Def:
case tgtok::Defm:
case tgtok::Foreach:
if (ParseObject(CurMultiClass))
return true;
break;
}
}
Lex.Lex(); }
CurMultiClass = 0;
return false;
}
Record *TGParser::
InstantiateMulticlassDef(MultiClass &MC,
Record *DefProto,
Init *DefmPrefix,
SMLoc DefmPrefixLoc) {
if (DefmPrefix == 0)
DefmPrefix = StringInit::get(GetNewAnonymousName());
Init *DefName = DefProto->getNameInit();
StringInit *DefNameString = dynamic_cast<StringInit *>(DefName);
if (DefNameString != 0) {
DefName =
BinOpInit::get(BinOpInit::STRCONCAT,
UnOpInit::get(UnOpInit::CAST, DefmPrefix,
StringRecTy::get())->Fold(DefProto, &MC),
DefName, StringRecTy::get())->Fold(DefProto, &MC);
}
Record *CurRec = new Record(DefName, DefmPrefixLoc, Records);
SubClassReference Ref;
Ref.RefLoc = DefmPrefixLoc;
Ref.Rec = DefProto;
AddSubClass(CurRec, Ref);
if (DefNameString == 0) {
if (SetValue(CurRec, Ref.RefLoc, "NAME", std::vector<unsigned>(),
DefmPrefix)) {
Error(DefmPrefixLoc, "Could not resolve "
+ CurRec->getNameInitAsString() + ":NAME to '"
+ DefmPrefix->getAsUnquotedString() + "'");
return 0;
}
RecordVal *DefNameRV = CurRec->getValue("NAME");
CurRec->resolveReferencesTo(DefNameRV);
}
if (!CurMultiClass) {
if (Records.getDef(CurRec->getNameInitAsString())) {
Error(DefmPrefixLoc, "def '" + CurRec->getNameInitAsString() +
"' already defined, instantiating defm with subdef '" +
DefProto->getNameInitAsString() + "'");
return 0;
}
Records.addDef(CurRec);
}
return CurRec;
}
bool TGParser::ResolveMulticlassDefArgs(MultiClass &MC,
Record *CurRec,
SMLoc DefmPrefixLoc,
SMLoc SubClassLoc,
const std::vector<Init *> &TArgs,
std::vector<Init *> &TemplateVals,
bool DeleteArgs) {
for (unsigned i = 0, e = TArgs.size(); i != e; ++i) {
if (i < TemplateVals.size()) {
if (SetValue(CurRec, DefmPrefixLoc, TArgs[i], std::vector<unsigned>(),
TemplateVals[i]))
return true;
CurRec->resolveReferencesTo(CurRec->getValue(TArgs[i]));
if (DeleteArgs)
CurRec->removeValue(TArgs[i]);
} else if (!CurRec->getValue(TArgs[i])->getValue()->isComplete()) {
return Error(SubClassLoc, "value not specified for template argument #"+
utostr(i) + " (" + TArgs[i]->getAsUnquotedString()
+ ") of multiclassclass '" + MC.Rec.getNameInitAsString()
+ "'");
}
}
return false;
}
bool TGParser::ResolveMulticlassDef(MultiClass &MC,
Record *CurRec,
Record *DefProto,
SMLoc DefmPrefixLoc) {
for (unsigned i = 0, e = LetStack.size(); i != e; ++i)
for (unsigned j = 0, e = LetStack[i].size(); j != e; ++j)
if (SetValue(CurRec, LetStack[i][j].Loc, LetStack[i][j].Name,
LetStack[i][j].Bits, LetStack[i][j].Value))
return Error(DefmPrefixLoc, "when instantiating this defm");
if (CurMultiClass) {
for (unsigned i = 0, e = CurMultiClass->DefPrototypes.size();
i != e; ++i)
if (CurMultiClass->DefPrototypes[i]->getNameInit()
== CurRec->getNameInit())
return Error(DefmPrefixLoc, "defm '" + CurRec->getNameInitAsString() +
"' already defined in this multiclass!");
CurMultiClass->DefPrototypes.push_back(CurRec);
const std::vector<Init *> &TA =
CurMultiClass->Rec.getTemplateArgs();
for (unsigned i = 0, e = TA.size(); i != e; ++i) {
const RecordVal *RV = CurMultiClass->Rec.getValue(TA[i]);
assert(RV && "Template arg doesn't exist?");
CurRec->addValue(*RV);
}
}
return false;
}
bool TGParser::ParseDefm(MultiClass *CurMultiClass) {
assert(Lex.getCode() == tgtok::Defm && "Unexpected token!");
Init *DefmPrefix = 0;
if (Lex.Lex() == tgtok::Id) { DefmPrefix = ParseObjectName(CurMultiClass);
}
SMLoc DefmPrefixLoc = Lex.getLoc();
if (Lex.getCode() != tgtok::colon)
return TokError("expected ':' after defm identifier");
std::vector<Record*> NewRecDefs;
bool InheritFromClass = false;
Lex.Lex();
SMLoc SubClassLoc = Lex.getLoc();
SubClassReference Ref = ParseSubClassReference(0, true);
while (1) {
if (Ref.Rec == 0) return true;
MultiClass *MC = MultiClasses[Ref.Rec->getName()];
assert(MC && "Didn't lookup multiclass correctly?");
std::vector<Init*> &TemplateVals = Ref.TemplateArgs;
const std::vector<Init *> &TArgs = MC->Rec.getTemplateArgs();
if (TArgs.size() < TemplateVals.size())
return Error(SubClassLoc,
"more template args specified than multiclass expects");
for (unsigned i = 0, e = MC->DefPrototypes.size(); i != e; ++i) {
Record *DefProto = MC->DefPrototypes[i];
Record *CurRec = InstantiateMulticlassDef(*MC, DefProto, DefmPrefix, DefmPrefixLoc);
if (!CurRec)
return true;
if (ResolveMulticlassDefArgs(*MC, CurRec, DefmPrefixLoc, SubClassLoc,
TArgs, TemplateVals, true))
return Error(SubClassLoc, "could not instantiate def");
if (ResolveMulticlassDef(*MC, CurRec, DefProto, DefmPrefixLoc))
return Error(SubClassLoc, "could not instantiate def");
NewRecDefs.push_back(CurRec);
}
if (Lex.getCode() != tgtok::comma) break;
Lex.Lex();
SubClassLoc = Lex.getLoc();
InheritFromClass = (Records.getClass(Lex.getCurStrVal()) != 0);
if (InheritFromClass)
break;
Ref = ParseSubClassReference(0, true);
}
if (InheritFromClass) {
SubClassReference SubClass = ParseSubClassReference(0, false);
while (1) {
if (SubClass.Rec == 0) return true;
for (unsigned i = 0, e = NewRecDefs.size(); i != e; ++i) {
Record *CurRec = NewRecDefs[i];
if (AddSubClass(CurRec, SubClass))
return true;
for (unsigned i = 0, e = LetStack.size(); i != e; ++i)
for (unsigned j = 0, e = LetStack[i].size(); j != e; ++j)
if (SetValue(CurRec, LetStack[i][j].Loc, LetStack[i][j].Name,
LetStack[i][j].Bits, LetStack[i][j].Value))
return true;
}
if (Lex.getCode() != tgtok::comma) break;
Lex.Lex(); SubClass = ParseSubClassReference(0, false);
}
}
if (!CurMultiClass)
for (unsigned i = 0, e = NewRecDefs.size(); i != e; ++i)
NewRecDefs[i]->resolveReferences();
if (Lex.getCode() != tgtok::semi)
return TokError("expected ';' at end of defm");
Lex.Lex();
return false;
}
bool TGParser::ParseObject(MultiClass *MC) {
switch (Lex.getCode()) {
default:
return TokError("Expected class, def, defm, multiclass or let definition");
case tgtok::Let: return ParseTopLevelLet(MC);
case tgtok::Def: return ParseDef(MC);
case tgtok::Foreach: return ParseForeach(MC);
case tgtok::Defm: return ParseDefm(MC);
case tgtok::Class: return ParseClass();
case tgtok::MultiClass: return ParseMultiClass();
}
}
bool TGParser::ParseObjectList(MultiClass *MC) {
while (isObjectStart(Lex.getCode())) {
if (ParseObject(MC))
return true;
}
return false;
}
bool TGParser::ParseFile() {
Lex.Lex(); if (ParseObjectList()) return true;
if (Lex.getCode() == tgtok::Eof)
return false;
return TokError("Unexpected input at top level");
}