//
//===----------------------------------------------------------------------===//
-#ifndef TGPARSER_H
-#define TGPARSER_H
+#ifndef LLVM_LIB_TABLEGEN_TGPARSER_H
+#define LLVM_LIB_TABLEGEN_TGPARSER_H
-#include "llvm/TableGen/Record.h"
#include "TGLexer.h"
-#include "llvm/TableGen/Error.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/SourceMgr.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
#include <map>
namespace llvm {
struct MultiClass;
struct SubClassReference;
struct SubMultiClassReference;
-
+
struct LetRecord {
std::string Name;
std::vector<unsigned> Bits;
: Name(N), Bits(B), Value(V), Loc(L) {
}
};
-
+
+ /// ForeachLoop - Record the iteration state associated with a for loop.
+ /// This is used to instantiate items in the loop body.
+ struct ForeachLoop {
+ VarInit *IterVar;
+ ListInit *ListValue;
+
+ ForeachLoop(VarInit *IVar, ListInit *LValue)
+ : IterVar(IVar), ListValue(LValue) {}
+ };
+
class TGParser {
TGLexer Lex;
std::vector<std::vector<LetRecord> > LetStack;
- std::map<std::string, MultiClass*> MultiClasses;
-
- /// CurMultiClass - If we are parsing a 'multiclass' definition, this is the
+ std::map<std::string, std::unique_ptr<MultiClass>> MultiClasses;
+
+ /// Loops - Keep track of any foreach loops we are within.
+ ///
+ typedef std::vector<ForeachLoop> LoopVector;
+ LoopVector Loops;
+
+ /// CurMultiClass - If we are parsing a 'multiclass' definition, this is the
/// current value.
MultiClass *CurMultiClass;
// Record tracker
RecordKeeper &Records;
+
+ unsigned AnonCounter;
+
+ // A "named boolean" indicating how to parse identifiers. Usually
+ // identifiers map to some existing object but in special cases
+ // (e.g. parsing def names) no such object exists yet because we are
+ // in the middle of creating in. For those situations, allow the
+ // parser to ignore missing object errors.
+ enum IDParseMode {
+ ParseValueMode, // We are parsing a value we expect to look up.
+ ParseNameMode, // We are parsing a name of an object that does not yet
+ // exist.
+ ParseForeachMode // We are parsing a foreach init.
+ };
+
public:
- TGParser(SourceMgr &SrcMgr, RecordKeeper &records) :
- Lex(SrcMgr), CurMultiClass(0), Records(records) {}
-
+ TGParser(SourceMgr &SrcMgr, RecordKeeper &records)
+ : Lex(SrcMgr), CurMultiClass(nullptr), Records(records), AnonCounter(0) {}
+
/// ParseFile - Main entrypoint for parsing a tblgen file. These parser
/// routines return true on error, or false on success.
bool ParseFile();
-
+
bool Error(SMLoc L, const Twine &Msg) const {
PrintError(L, Msg);
return true;
bool TokError(const Twine &Msg) const {
return Error(Lex.getLoc(), Msg);
}
- const std::vector<std::string> &getDependencies() const {
+ const TGLexer::DependenciesMapTy &getDependencies() const {
return Lex.getDependencies();
}
+
private: // Semantic analysis methods.
bool AddValue(Record *TheRec, SMLoc Loc, const RecordVal &RV);
- bool SetValue(Record *TheRec, SMLoc Loc, Init *ValName,
- const std::vector<unsigned> &BitList, Init *V);
- bool SetValue(Record *TheRec, SMLoc Loc, const std::string &ValName,
- const std::vector<unsigned> &BitList, Init *V) {
- return SetValue(TheRec, Loc, StringInit::get(ValName), BitList, V);
+ bool SetValue(Record *TheRec, SMLoc Loc, Init *ValName,
+ ArrayRef<unsigned> BitList, Init *V,
+ bool AllowSelfAssignment = false);
+ bool SetValue(Record *TheRec, SMLoc Loc, const std::string &ValName,
+ ArrayRef<unsigned> BitList, Init *V,
+ bool AllowSelfAssignment = false) {
+ return SetValue(TheRec, Loc, StringInit::get(ValName), BitList, V,
+ AllowSelfAssignment);
}
bool AddSubClass(Record *Rec, SubClassReference &SubClass);
bool AddSubMultiClass(MultiClass *CurMC,
SubMultiClassReference &SubMultiClass);
+ std::string GetNewAnonymousName();
+
+ // IterRecord: Map an iterator name to a value.
+ struct IterRecord {
+ VarInit *IterVar;
+ Init *IterValue;
+ IterRecord(VarInit *Var, Init *Val) : IterVar(Var), IterValue(Val) {}
+ };
+
+ // IterSet: The set of all iterator values at some point in the
+ // iteration space.
+ typedef std::vector<IterRecord> IterSet;
+
+ bool ProcessForeachDefs(Record *CurRec, SMLoc Loc);
+ bool ProcessForeachDefs(Record *CurRec, SMLoc Loc, IterSet &IterVals);
+
private: // Parser methods.
- bool ParseObjectList(MultiClass *MC = 0);
+ bool ParseObjectList(MultiClass *MC = nullptr);
bool ParseObject(MultiClass *MC);
bool ParseClass();
bool ParseMultiClass();
- Record *InstantiateMulticlassDef(MultiClass &MC,
- Record *DefProto,
- const std::string &DefmPrefix,
- SMLoc DefmPrefixLoc);
- bool ResolveMulticlassDefArgs(MultiClass &MC,
- Record *DefProto,
- SMLoc DefmPrefixLoc,
- SMLoc SubClassLoc,
- const std::vector<Init *> &TArgs,
+ Record *InstantiateMulticlassDef(MultiClass &MC, Record *DefProto,
+ Init *&DefmPrefix, SMRange DefmPrefixRange,
+ ArrayRef<Init *> TArgs,
+ std::vector<Init *> &TemplateVals);
+ bool ResolveMulticlassDefArgs(MultiClass &MC, Record *DefProto,
+ SMLoc DefmPrefixLoc, SMLoc SubClassLoc,
+ ArrayRef<Init *> TArgs,
std::vector<Init *> &TemplateVals,
bool DeleteArgs);
bool ResolveMulticlassDef(MultiClass &MC,
SMLoc DefmPrefixLoc);
bool ParseDefm(MultiClass *CurMultiClass);
bool ParseDef(MultiClass *CurMultiClass);
+ bool ParseForeach(MultiClass *CurMultiClass);
bool ParseTopLevelLet(MultiClass *CurMultiClass);
std::vector<LetRecord> ParseLetList();
bool ParseTemplateArgList(Record *CurRec);
Init *ParseDeclaration(Record *CurRec, bool ParsingTemplateArgs);
+ VarInit *ParseForeachDeclaration(ListInit *&ForeachListValue);
SubClassReference ParseSubClassReference(Record *CurRec, bool isDefm);
SubMultiClassReference ParseSubMultiClassReference(MultiClass *CurMC);
- Init *ParseIDValue(Record *CurRec);
- Init *ParseIDValue(Record *CurRec, const std::string &Name, SMLoc NameLoc);
- Init *ParseSimpleValue(Record *CurRec, RecTy *ItemType = 0);
- Init *ParseValue(Record *CurRec, RecTy *ItemType = 0);
- std::vector<Init*> ParseValueList(Record *CurRec, Record *ArgsRec = 0, RecTy *EltTy = 0);
+ Init *ParseIDValue(Record *CurRec, const std::string &Name, SMLoc NameLoc,
+ IDParseMode Mode = ParseValueMode);
+ Init *ParseSimpleValue(Record *CurRec, RecTy *ItemType = nullptr,
+ IDParseMode Mode = ParseValueMode);
+ Init *ParseValue(Record *CurRec, RecTy *ItemType = nullptr,
+ IDParseMode Mode = ParseValueMode);
+ std::vector<Init*> ParseValueList(Record *CurRec, Record *ArgsRec = nullptr,
+ RecTy *EltTy = nullptr);
std::vector<std::pair<llvm::Init*, std::string> > ParseDagArgList(Record *);
bool ParseOptionalRangeList(std::vector<unsigned> &Ranges);
bool ParseOptionalBitList(std::vector<unsigned> &Ranges);
std::vector<unsigned> ParseRangeList();
bool ParseRangePiece(std::vector<unsigned> &Ranges);
RecTy *ParseType();
- Init *ParseOperation(Record *CurRec);
+ Init *ParseOperation(Record *CurRec, RecTy *ItemType);
RecTy *ParseOperatorType();
- std::string ParseObjectName();
+ Init *ParseObjectName(MultiClass *CurMultiClass);
Record *ParseClassID();
MultiClass *ParseMultiClassID();
- Record *ParseDefmID();
+ bool ApplyLetStack(Record *CurRec);
};
-
+
} // end namespace llvm
#endif