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-rw-r--r--contrib/llvm/lib/TableGen/TGParser.h73
1 files changed, 64 insertions, 9 deletions
diff --git a/contrib/llvm/lib/TableGen/TGParser.h b/contrib/llvm/lib/TableGen/TGParser.h
index db8a620..b8e7cb1 100644
--- a/contrib/llvm/lib/TableGen/TGParser.h
+++ b/contrib/llvm/lib/TableGen/TGParser.h
@@ -14,6 +14,7 @@
#ifndef TGPARSER_H
#define TGPARSER_H
+#include "llvm/TableGen/Record.h"
#include "TGLexer.h"
#include "llvm/TableGen/Error.h"
#include "llvm/ADT/Twine.h"
@@ -41,17 +42,44 @@ namespace llvm {
}
};
+ /// ForeachLoop - Record the iteration state associated with a for loop.
+ /// This is used to instantiate items in the loop body.
+ struct ForeachLoop {
+ Init *IterVar;
+ Init *ListValue;
+
+ ForeachLoop(Init *IVar, Init *LValue) : IterVar(IVar), ListValue(LValue) {}
+ };
+
class TGParser {
TGLexer Lex;
std::vector<std::vector<LetRecord> > LetStack;
std::map<std::string, 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;
+
+ // 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) {}
@@ -70,14 +98,36 @@ public:
const std::vector<std::string> &getDependencies() const {
return Lex.getDependencies();
}
+
private: // Semantic analysis methods.
bool AddValue(Record *TheRec, SMLoc Loc, const RecordVal &RV);
- bool SetValue(Record *TheRec, SMLoc Loc, const std::string &ValName,
+ 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 AddSubClass(Record *Rec, SubClassReference &SubClass);
bool AddSubMultiClass(MultiClass *CurMC,
SubMultiClassReference &SubMultiClass);
+ // IterRecord: Map an iterator name to a value.
+ struct IterRecord {
+ Init *IterVar;
+ Init *IterValue;
+ IterRecord(Init *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, MultiClass *CurMultiClass,
+ SMLoc Loc);
+ bool ProcessForeachDefs(Record *CurRec, MultiClass *CurMultiClass,
+ SMLoc Loc, IterSet &IterVals, ForeachLoop &CurLoop,
+ LoopVector::iterator NextLoop);
+
private: // Parser methods.
bool ParseObjectList(MultiClass *MC = 0);
bool ParseObject(MultiClass *MC);
@@ -85,13 +135,13 @@ private: // Parser methods.
bool ParseMultiClass();
Record *InstantiateMulticlassDef(MultiClass &MC,
Record *DefProto,
- const std::string &DefmPrefix,
+ Init *DefmPrefix,
SMLoc DefmPrefixLoc);
bool ResolveMulticlassDefArgs(MultiClass &MC,
Record *DefProto,
SMLoc DefmPrefixLoc,
SMLoc SubClassLoc,
- const std::vector<std::string> &TArgs,
+ const std::vector<Init *> &TArgs,
std::vector<Init *> &TemplateVals,
bool DeleteArgs);
bool ResolveMulticlassDef(MultiClass &MC,
@@ -100,6 +150,7 @@ private: // Parser methods.
SMLoc DefmPrefixLoc);
bool ParseDefm(MultiClass *CurMultiClass);
bool ParseDef(MultiClass *CurMultiClass);
+ bool ParseForeach(MultiClass *CurMultiClass);
bool ParseTopLevelLet(MultiClass *CurMultiClass);
std::vector<LetRecord> ParseLetList();
@@ -108,15 +159,19 @@ private: // Parser methods.
bool ParseBodyItem(Record *CurRec);
bool ParseTemplateArgList(Record *CurRec);
- std::string ParseDeclaration(Record *CurRec, bool ParsingTemplateArgs);
+ Init *ParseDeclaration(Record *CurRec, bool ParsingTemplateArgs);
+ Init *ParseForeachDeclaration(Init *&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);
+ Init *ParseIDValue(Record *CurRec, IDParseMode Mode = ParseValueMode);
+ Init *ParseIDValue(Record *CurRec, const std::string &Name, SMLoc NameLoc,
+ IDParseMode Mode = ParseValueMode);
+ Init *ParseSimpleValue(Record *CurRec, RecTy *ItemType = 0,
+ IDParseMode Mode = ParseValueMode);
+ Init *ParseValue(Record *CurRec, RecTy *ItemType = 0,
+ IDParseMode Mode = ParseValueMode);
std::vector<Init*> ParseValueList(Record *CurRec, Record *ArgsRec = 0, RecTy *EltTy = 0);
std::vector<std::pair<llvm::Init*, std::string> > ParseDagArgList(Record *);
bool ParseOptionalRangeList(std::vector<unsigned> &Ranges);
@@ -126,7 +181,7 @@ private: // Parser methods.
RecTy *ParseType();
Init *ParseOperation(Record *CurRec);
RecTy *ParseOperatorType();
- std::string ParseObjectName();
+ Init *ParseObjectName(MultiClass *CurMultiClass);
Record *ParseClassID();
MultiClass *ParseMultiClassID();
Record *ParseDefmID();
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