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Diffstat (limited to 'contrib/llvm/lib/AsmParser/LLParser.h')
| -rw-r--r-- | contrib/llvm/lib/AsmParser/LLParser.h | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/contrib/llvm/lib/AsmParser/LLParser.h b/contrib/llvm/lib/AsmParser/LLParser.h new file mode 100644 index 0000000..1f2879e --- /dev/null +++ b/contrib/llvm/lib/AsmParser/LLParser.h @@ -0,0 +1,410 @@ +//===-- LLParser.h - Parser Class -------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file defines the parser class for .ll files. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_ASMPARSER_LLPARSER_H +#define LLVM_ASMPARSER_LLPARSER_H + +#include "LLLexer.h" +#include "llvm/ADT/DenseMap.h" +#include "llvm/ADT/StringMap.h" +#include "llvm/IR/Attributes.h" +#include "llvm/IR/Instructions.h" +#include "llvm/IR/Module.h" +#include "llvm/IR/Operator.h" +#include "llvm/IR/Type.h" +#include "llvm/Support/ValueHandle.h" +#include <map> + +namespace llvm { + class Module; + class OpaqueType; + class Function; + class Value; + class BasicBlock; + class Instruction; + class Constant; + class GlobalValue; + class MDString; + class MDNode; + class StructType; + + /// ValID - Represents a reference of a definition of some sort with no type. + /// There are several cases where we have to parse the value but where the + /// type can depend on later context. This may either be a numeric reference + /// or a symbolic (%var) reference. This is just a discriminated union. + struct ValID { + enum { + t_LocalID, t_GlobalID, // ID in UIntVal. + t_LocalName, t_GlobalName, // Name in StrVal. + t_APSInt, t_APFloat, // Value in APSIntVal/APFloatVal. + t_Null, t_Undef, t_Zero, // No value. + t_EmptyArray, // No value: [] + t_Constant, // Value in ConstantVal. + t_InlineAsm, // Value in StrVal/StrVal2/UIntVal. + t_MDNode, // Value in MDNodeVal. + t_MDString, // Value in MDStringVal. + t_ConstantStruct, // Value in ConstantStructElts. + t_PackedConstantStruct // Value in ConstantStructElts. + } Kind; + + LLLexer::LocTy Loc; + unsigned UIntVal; + std::string StrVal, StrVal2; + APSInt APSIntVal; + APFloat APFloatVal; + Constant *ConstantVal; + MDNode *MDNodeVal; + MDString *MDStringVal; + Constant **ConstantStructElts; + + ValID() : Kind(t_LocalID), APFloatVal(0.0) {} + ~ValID() { + if (Kind == t_ConstantStruct || Kind == t_PackedConstantStruct) + delete [] ConstantStructElts; + } + + bool operator<(const ValID &RHS) const { + if (Kind == t_LocalID || Kind == t_GlobalID) + return UIntVal < RHS.UIntVal; + assert((Kind == t_LocalName || Kind == t_GlobalName || + Kind == t_ConstantStruct || Kind == t_PackedConstantStruct) && + "Ordering not defined for this ValID kind yet"); + return StrVal < RHS.StrVal; + } + }; + + class LLParser { + public: + typedef LLLexer::LocTy LocTy; + private: + LLVMContext &Context; + LLLexer Lex; + Module *M; + + // Instruction metadata resolution. Each instruction can have a list of + // MDRef info associated with them. + // + // The simpler approach of just creating temporary MDNodes and then calling + // RAUW on them when the definition is processed doesn't work because some + // instruction metadata kinds, such as dbg, get stored in the IR in an + // "optimized" format which doesn't participate in the normal value use + // lists. This means that RAUW doesn't work, even on temporary MDNodes + // which otherwise support RAUW. Instead, we defer resolving MDNode + // references until the definitions have been processed. + struct MDRef { + SMLoc Loc; + unsigned MDKind, MDSlot; + }; + DenseMap<Instruction*, std::vector<MDRef> > ForwardRefInstMetadata; + + // Type resolution handling data structures. The location is set when we + // have processed a use of the type but not a definition yet. + StringMap<std::pair<Type*, LocTy> > NamedTypes; + std::vector<std::pair<Type*, LocTy> > NumberedTypes; + + std::vector<TrackingVH<MDNode> > NumberedMetadata; + std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> > ForwardRefMDNodes; + + // Global Value reference information. + std::map<std::string, std::pair<GlobalValue*, LocTy> > ForwardRefVals; + std::map<unsigned, std::pair<GlobalValue*, LocTy> > ForwardRefValIDs; + std::vector<GlobalValue*> NumberedVals; + + // References to blockaddress. The key is the function ValID, the value is + // a list of references to blocks in that function. + std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > > + ForwardRefBlockAddresses; + + // Attribute builder reference information. + std::map<Value*, std::vector<unsigned> > ForwardRefAttrGroups; + std::map<unsigned, AttrBuilder> NumberedAttrBuilders; + + public: + LLParser(MemoryBuffer *F, SourceMgr &SM, SMDiagnostic &Err, Module *m) : + Context(m->getContext()), Lex(F, SM, Err, m->getContext()), + M(m) {} + bool Run(); + + LLVMContext &getContext() { return Context; } + + private: + + bool Error(LocTy L, const Twine &Msg) const { + return Lex.Error(L, Msg); + } + bool TokError(const Twine &Msg) const { + return Error(Lex.getLoc(), Msg); + } + + /// GetGlobalVal - Get a value with the specified name or ID, creating a + /// forward reference record if needed. This can return null if the value + /// exists but does not have the right type. + GlobalValue *GetGlobalVal(const std::string &N, Type *Ty, LocTy Loc); + GlobalValue *GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc); + + // Helper Routines. + bool ParseToken(lltok::Kind T, const char *ErrMsg); + bool EatIfPresent(lltok::Kind T) { + if (Lex.getKind() != T) return false; + Lex.Lex(); + return true; + } + + FastMathFlags EatFastMathFlagsIfPresent() { + FastMathFlags FMF; + while (true) + switch (Lex.getKind()) { + case lltok::kw_fast: FMF.setUnsafeAlgebra(); Lex.Lex(); continue; + case lltok::kw_nnan: FMF.setNoNaNs(); Lex.Lex(); continue; + case lltok::kw_ninf: FMF.setNoInfs(); Lex.Lex(); continue; + case lltok::kw_nsz: FMF.setNoSignedZeros(); Lex.Lex(); continue; + case lltok::kw_arcp: FMF.setAllowReciprocal(); Lex.Lex(); continue; + default: return FMF; + } + return FMF; + } + + bool ParseOptionalToken(lltok::Kind T, bool &Present, LocTy *Loc = 0) { + if (Lex.getKind() != T) { + Present = false; + } else { + if (Loc) + *Loc = Lex.getLoc(); + Lex.Lex(); + Present = true; + } + return false; + } + bool ParseStringConstant(std::string &Result); + bool ParseUInt32(unsigned &Val); + bool ParseUInt32(unsigned &Val, LocTy &Loc) { + Loc = Lex.getLoc(); + return ParseUInt32(Val); + } + + bool ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM); + bool ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM); + bool ParseOptionalAddrSpace(unsigned &AddrSpace); + bool ParseOptionalParamAttrs(AttrBuilder &B); + bool ParseOptionalReturnAttrs(AttrBuilder &B); + bool ParseOptionalLinkage(unsigned &Linkage, bool &HasLinkage); + bool ParseOptionalLinkage(unsigned &Linkage) { + bool HasLinkage; return ParseOptionalLinkage(Linkage, HasLinkage); + } + bool ParseOptionalVisibility(unsigned &Visibility); + bool ParseOptionalCallingConv(CallingConv::ID &CC); + bool ParseOptionalAlignment(unsigned &Alignment); + bool ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope, + AtomicOrdering &Ordering); + bool ParseOptionalStackAlignment(unsigned &Alignment); + bool ParseOptionalCommaAlign(unsigned &Alignment, bool &AteExtraComma); + bool ParseIndexList(SmallVectorImpl<unsigned> &Indices,bool &AteExtraComma); + bool ParseIndexList(SmallVectorImpl<unsigned> &Indices) { + bool AteExtraComma; + if (ParseIndexList(Indices, AteExtraComma)) return true; + if (AteExtraComma) + return TokError("expected index"); + return false; + } + + // Top-Level Entities + bool ParseTopLevelEntities(); + bool ValidateEndOfModule(); + bool ParseTargetDefinition(); + bool ParseModuleAsm(); + bool ParseDepLibs(); // FIXME: Remove in 4.0. + bool ParseUnnamedType(); + bool ParseNamedType(); + bool ParseDeclare(); + bool ParseDefine(); + + bool ParseGlobalType(bool &IsConstant); + bool ParseUnnamedGlobal(); + bool ParseNamedGlobal(); + bool ParseGlobal(const std::string &Name, LocTy Loc, unsigned Linkage, + bool HasLinkage, unsigned Visibility); + bool ParseAlias(const std::string &Name, LocTy Loc, unsigned Visibility); + bool ParseStandaloneMetadata(); + bool ParseNamedMetadata(); + bool ParseMDString(MDString *&Result); + bool ParseMDNodeID(MDNode *&Result); + bool ParseMDNodeID(MDNode *&Result, unsigned &SlotNo); + bool ParseUnnamedAttrGrp(); + bool ParseFnAttributeValuePairs(AttrBuilder &B, + std::vector<unsigned> &FwdRefAttrGrps, + bool inAttrGrp, LocTy &NoBuiltinLoc); + + // Type Parsing. + bool ParseType(Type *&Result, bool AllowVoid = false); + bool ParseType(Type *&Result, LocTy &Loc, bool AllowVoid = false) { + Loc = Lex.getLoc(); + return ParseType(Result, AllowVoid); + } + bool ParseAnonStructType(Type *&Result, bool Packed); + bool ParseStructBody(SmallVectorImpl<Type*> &Body); + bool ParseStructDefinition(SMLoc TypeLoc, StringRef Name, + std::pair<Type*, LocTy> &Entry, + Type *&ResultTy); + + bool ParseArrayVectorType(Type *&Result, bool isVector); + bool ParseFunctionType(Type *&Result); + + // Function Semantic Analysis. + class PerFunctionState { + LLParser &P; + Function &F; + std::map<std::string, std::pair<Value*, LocTy> > ForwardRefVals; + std::map<unsigned, std::pair<Value*, LocTy> > ForwardRefValIDs; + std::vector<Value*> NumberedVals; + + /// FunctionNumber - If this is an unnamed function, this is the slot + /// number of it, otherwise it is -1. + int FunctionNumber; + public: + PerFunctionState(LLParser &p, Function &f, int FunctionNumber); + ~PerFunctionState(); + + Function &getFunction() const { return F; } + + bool FinishFunction(); + + /// GetVal - Get a value with the specified name or ID, creating a + /// forward reference record if needed. This can return null if the value + /// exists but does not have the right type. + Value *GetVal(const std::string &Name, Type *Ty, LocTy Loc); + Value *GetVal(unsigned ID, Type *Ty, LocTy Loc); + + /// SetInstName - After an instruction is parsed and inserted into its + /// basic block, this installs its name. + bool SetInstName(int NameID, const std::string &NameStr, LocTy NameLoc, + Instruction *Inst); + + /// GetBB - Get a basic block with the specified name or ID, creating a + /// forward reference record if needed. This can return null if the value + /// is not a BasicBlock. + BasicBlock *GetBB(const std::string &Name, LocTy Loc); + BasicBlock *GetBB(unsigned ID, LocTy Loc); + + /// DefineBB - Define the specified basic block, which is either named or + /// unnamed. If there is an error, this returns null otherwise it returns + /// the block being defined. + BasicBlock *DefineBB(const std::string &Name, LocTy Loc); + }; + + bool ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V, + PerFunctionState *PFS); + + bool ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS); + bool ParseValue(Type *Ty, Value *&V, PerFunctionState &PFS) { + return ParseValue(Ty, V, &PFS); + } + bool ParseValue(Type *Ty, Value *&V, LocTy &Loc, + PerFunctionState &PFS) { + Loc = Lex.getLoc(); + return ParseValue(Ty, V, &PFS); + } + + bool ParseTypeAndValue(Value *&V, PerFunctionState *PFS); + bool ParseTypeAndValue(Value *&V, PerFunctionState &PFS) { + return ParseTypeAndValue(V, &PFS); + } + bool ParseTypeAndValue(Value *&V, LocTy &Loc, PerFunctionState &PFS) { + Loc = Lex.getLoc(); + return ParseTypeAndValue(V, PFS); + } + bool ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc, + PerFunctionState &PFS); + bool ParseTypeAndBasicBlock(BasicBlock *&BB, PerFunctionState &PFS) { + LocTy Loc; + return ParseTypeAndBasicBlock(BB, Loc, PFS); + } + + + struct ParamInfo { + LocTy Loc; + Value *V; + AttributeSet Attrs; + ParamInfo(LocTy loc, Value *v, AttributeSet attrs) + : Loc(loc), V(v), Attrs(attrs) {} + }; + bool ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList, + PerFunctionState &PFS); + + // Constant Parsing. + bool ParseValID(ValID &ID, PerFunctionState *PFS = NULL); + bool ParseGlobalValue(Type *Ty, Constant *&V); + bool ParseGlobalTypeAndValue(Constant *&V); + bool ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts); + bool ParseMetadataListValue(ValID &ID, PerFunctionState *PFS); + bool ParseMetadataValue(ValID &ID, PerFunctionState *PFS); + bool ParseMDNodeVector(SmallVectorImpl<Value*> &, PerFunctionState *PFS); + bool ParseInstructionMetadata(Instruction *Inst, PerFunctionState *PFS); + + // Function Parsing. + struct ArgInfo { + LocTy Loc; + Type *Ty; + AttributeSet Attrs; + std::string Name; + ArgInfo(LocTy L, Type *ty, AttributeSet Attr, const std::string &N) + : Loc(L), Ty(ty), Attrs(Attr), Name(N) {} + }; + bool ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList, bool &isVarArg); + bool ParseFunctionHeader(Function *&Fn, bool isDefine); + bool ParseFunctionBody(Function &Fn); + bool ParseBasicBlock(PerFunctionState &PFS); + + // Instruction Parsing. Each instruction parsing routine can return with a + // normal result, an error result, or return having eaten an extra comma. + enum InstResult { InstNormal = 0, InstError = 1, InstExtraComma = 2 }; + int ParseInstruction(Instruction *&Inst, BasicBlock *BB, + PerFunctionState &PFS); + bool ParseCmpPredicate(unsigned &Pred, unsigned Opc); + + bool ParseRet(Instruction *&Inst, BasicBlock *BB, PerFunctionState &PFS); + bool ParseBr(Instruction *&Inst, PerFunctionState &PFS); + bool ParseSwitch(Instruction *&Inst, PerFunctionState &PFS); + bool ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS); + bool ParseInvoke(Instruction *&Inst, PerFunctionState &PFS); + bool ParseResume(Instruction *&Inst, PerFunctionState &PFS); + + bool ParseArithmetic(Instruction *&I, PerFunctionState &PFS, unsigned Opc, + unsigned OperandType); + bool ParseLogical(Instruction *&I, PerFunctionState &PFS, unsigned Opc); + bool ParseCompare(Instruction *&I, PerFunctionState &PFS, unsigned Opc); + bool ParseCast(Instruction *&I, PerFunctionState &PFS, unsigned Opc); + bool ParseSelect(Instruction *&I, PerFunctionState &PFS); + bool ParseVA_Arg(Instruction *&I, PerFunctionState &PFS); + bool ParseExtractElement(Instruction *&I, PerFunctionState &PFS); + bool ParseInsertElement(Instruction *&I, PerFunctionState &PFS); + bool ParseShuffleVector(Instruction *&I, PerFunctionState &PFS); + int ParsePHI(Instruction *&I, PerFunctionState &PFS); + bool ParseLandingPad(Instruction *&I, PerFunctionState &PFS); + bool ParseCall(Instruction *&I, PerFunctionState &PFS, bool isTail); + int ParseAlloc(Instruction *&I, PerFunctionState &PFS); + int ParseLoad(Instruction *&I, PerFunctionState &PFS); + int ParseStore(Instruction *&I, PerFunctionState &PFS); + int ParseCmpXchg(Instruction *&I, PerFunctionState &PFS); + int ParseAtomicRMW(Instruction *&I, PerFunctionState &PFS); + int ParseFence(Instruction *&I, PerFunctionState &PFS); + int ParseGetElementPtr(Instruction *&I, PerFunctionState &PFS); + int ParseExtractValue(Instruction *&I, PerFunctionState &PFS); + int ParseInsertValue(Instruction *&I, PerFunctionState &PFS); + + bool ResolveForwardRefBlockAddresses(Function *TheFn, + std::vector<std::pair<ValID, GlobalValue*> > &Refs, + PerFunctionState *PFS); + }; +} // End llvm namespace + +#endif |
