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	The patch is generated using this command: tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py -fix \ -checks=-*,llvm-namespace-comment -header-filter='llvm/.*|clang/.*' \ llvm/lib/ Thanks to Eugene Kosov for the original patch! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240137 91177308-0d34-0410-b5e6-96231b3b80d8
		
			
				
	
	
		
			475 lines
		
	
	
		
			19 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			475 lines
		
	
	
		
			19 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
//===-- LLParser.h - Parser Class -------------------------------*- C++ -*-===//
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//
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//                     The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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//  This file defines the parser class for .ll files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_ASMPARSER_LLPARSER_H
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#define LLVM_LIB_ASMPARSER_LLPARSER_H
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#include "LLLexer.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/IR/Attributes.h"
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#include "llvm/IR/Instructions.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/Operator.h"
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#include "llvm/IR/Type.h"
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#include "llvm/IR/ValueHandle.h"
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#include <map>
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namespace llvm {
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  class Module;
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  class OpaqueType;
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  class Function;
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  class Value;
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  class BasicBlock;
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  class Instruction;
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  class Constant;
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  class GlobalValue;
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  class Comdat;
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  class MDString;
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  class MDNode;
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  class StructType;
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  /// ValID - Represents a reference of a definition of some sort with no type.
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  /// There are several cases where we have to parse the value but where the
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  /// type can depend on later context.  This may either be a numeric reference
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  /// or a symbolic (%var) reference.  This is just a discriminated union.
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  struct ValID {
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    enum {
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      t_LocalID, t_GlobalID,      // ID in UIntVal.
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      t_LocalName, t_GlobalName,  // Name in StrVal.
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      t_APSInt, t_APFloat,        // Value in APSIntVal/APFloatVal.
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      t_Null, t_Undef, t_Zero,    // No value.
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      t_EmptyArray,               // No value:  []
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      t_Constant,                 // Value in ConstantVal.
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      t_InlineAsm,                // Value in StrVal/StrVal2/UIntVal.
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      t_ConstantStruct,           // Value in ConstantStructElts.
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      t_PackedConstantStruct      // Value in ConstantStructElts.
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    } Kind;
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    LLLexer::LocTy Loc;
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    unsigned UIntVal;
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    std::string StrVal, StrVal2;
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    APSInt APSIntVal;
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    APFloat APFloatVal;
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    Constant *ConstantVal;
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    Constant **ConstantStructElts;
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    ValID() : Kind(t_LocalID), APFloatVal(0.0) {}
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    ~ValID() {
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      if (Kind == t_ConstantStruct || Kind == t_PackedConstantStruct)
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        delete [] ConstantStructElts;
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    }
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    bool operator<(const ValID &RHS) const {
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      if (Kind == t_LocalID || Kind == t_GlobalID)
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        return UIntVal < RHS.UIntVal;
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      assert((Kind == t_LocalName || Kind == t_GlobalName ||
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              Kind == t_ConstantStruct || Kind == t_PackedConstantStruct) &&
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             "Ordering not defined for this ValID kind yet");
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      return StrVal < RHS.StrVal;
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    }
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  };
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  class LLParser {
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  public:
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    typedef LLLexer::LocTy LocTy;
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  private:
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    LLVMContext &Context;
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    LLLexer Lex;
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    Module *M;
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    // Instruction metadata resolution.  Each instruction can have a list of
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    // MDRef info associated with them.
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    //
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    // The simpler approach of just creating temporary MDNodes and then calling
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    // RAUW on them when the definition is processed doesn't work because some
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    // instruction metadata kinds, such as dbg, get stored in the IR in an
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    // "optimized" format which doesn't participate in the normal value use
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    // lists. This means that RAUW doesn't work, even on temporary MDNodes
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    // which otherwise support RAUW. Instead, we defer resolving MDNode
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    // references until the definitions have been processed.
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    struct MDRef {
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      SMLoc Loc;
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      unsigned MDKind, MDSlot;
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    };
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    SmallVector<Instruction*, 64> InstsWithTBAATag;
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    // Type resolution handling data structures.  The location is set when we
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    // have processed a use of the type but not a definition yet.
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    StringMap<std::pair<Type*, LocTy> > NamedTypes;
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    std::map<unsigned, std::pair<Type*, LocTy> > NumberedTypes;
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    std::map<unsigned, TrackingMDNodeRef> NumberedMetadata;
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    std::map<unsigned, std::pair<TempMDTuple, LocTy>> ForwardRefMDNodes;
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    // Global Value reference information.
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    std::map<std::string, std::pair<GlobalValue*, LocTy> > ForwardRefVals;
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    std::map<unsigned, std::pair<GlobalValue*, LocTy> > ForwardRefValIDs;
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    std::vector<GlobalValue*> NumberedVals;
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    // Comdat forward reference information.
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    std::map<std::string, LocTy> ForwardRefComdats;
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    // References to blockaddress.  The key is the function ValID, the value is
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    // a list of references to blocks in that function.
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    std::map<ValID, std::map<ValID, GlobalValue *>> ForwardRefBlockAddresses;
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    class PerFunctionState;
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    /// Reference to per-function state to allow basic blocks to be
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    /// forward-referenced by blockaddress instructions within the same
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    /// function.
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    PerFunctionState *BlockAddressPFS;
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    // Attribute builder reference information.
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    std::map<Value*, std::vector<unsigned> > ForwardRefAttrGroups;
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    std::map<unsigned, AttrBuilder> NumberedAttrBuilders;
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  public:
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    LLParser(StringRef F, SourceMgr &SM, SMDiagnostic &Err, Module *m)
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        : Context(m->getContext()), Lex(F, SM, Err, m->getContext()), M(m),
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          BlockAddressPFS(nullptr) {}
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    bool Run();
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    LLVMContext &getContext() { return Context; }
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  private:
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    bool Error(LocTy L, const Twine &Msg) const {
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      return Lex.Error(L, Msg);
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    }
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    bool TokError(const Twine &Msg) const {
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      return Error(Lex.getLoc(), Msg);
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    }
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    /// GetGlobalVal - Get a value with the specified name or ID, creating a
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    /// forward reference record if needed.  This can return null if the value
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    /// exists but does not have the right type.
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    GlobalValue *GetGlobalVal(const std::string &N, Type *Ty, LocTy Loc);
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    GlobalValue *GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc);
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    /// Get a Comdat with the specified name, creating a forward reference
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    /// record if needed.
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    Comdat *getComdat(const std::string &N, LocTy Loc);
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    // Helper Routines.
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    bool ParseToken(lltok::Kind T, const char *ErrMsg);
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    bool EatIfPresent(lltok::Kind T) {
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      if (Lex.getKind() != T) return false;
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      Lex.Lex();
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      return true;
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    }
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    FastMathFlags EatFastMathFlagsIfPresent() {
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      FastMathFlags FMF;
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      while (true)
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        switch (Lex.getKind()) {
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        case lltok::kw_fast: FMF.setUnsafeAlgebra();   Lex.Lex(); continue;
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        case lltok::kw_nnan: FMF.setNoNaNs();          Lex.Lex(); continue;
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        case lltok::kw_ninf: FMF.setNoInfs();          Lex.Lex(); continue;
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        case lltok::kw_nsz:  FMF.setNoSignedZeros();   Lex.Lex(); continue;
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        case lltok::kw_arcp: FMF.setAllowReciprocal(); Lex.Lex(); continue;
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        default: return FMF;
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        }
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      return FMF;
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    }
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    bool ParseOptionalToken(lltok::Kind T, bool &Present,
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                            LocTy *Loc = nullptr) {
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      if (Lex.getKind() != T) {
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        Present = false;
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      } else {
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        if (Loc)
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          *Loc = Lex.getLoc();
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        Lex.Lex();
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        Present = true;
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      }
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      return false;
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    }
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    bool ParseStringConstant(std::string &Result);
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    bool ParseUInt32(unsigned &Val);
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    bool ParseUInt32(unsigned &Val, LocTy &Loc) {
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      Loc = Lex.getLoc();
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      return ParseUInt32(Val);
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    }
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    bool ParseUInt64(uint64_t &Val);
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    bool ParseUInt64(uint64_t &Val, LocTy &Loc) {
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      Loc = Lex.getLoc();
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      return ParseUInt64(Val);
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    }
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    bool ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM);
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    bool ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM);
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    bool parseOptionalUnnamedAddr(bool &UnnamedAddr) {
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      return ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr);
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    }
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    bool ParseOptionalAddrSpace(unsigned &AddrSpace);
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    bool ParseOptionalParamAttrs(AttrBuilder &B);
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    bool ParseOptionalReturnAttrs(AttrBuilder &B);
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    bool ParseOptionalLinkage(unsigned &Linkage, bool &HasLinkage);
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    bool ParseOptionalLinkage(unsigned &Linkage) {
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      bool HasLinkage; return ParseOptionalLinkage(Linkage, HasLinkage);
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    }
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    bool ParseOptionalVisibility(unsigned &Visibility);
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    bool ParseOptionalDLLStorageClass(unsigned &DLLStorageClass);
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    bool ParseOptionalCallingConv(unsigned &CC);
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    bool ParseOptionalAlignment(unsigned &Alignment);
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    bool ParseOptionalDerefAttrBytes(lltok::Kind AttrKind, uint64_t &Bytes);
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    bool ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
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                               AtomicOrdering &Ordering);
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    bool ParseOrdering(AtomicOrdering &Ordering);
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    bool ParseOptionalStackAlignment(unsigned &Alignment);
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    bool ParseOptionalCommaAlign(unsigned &Alignment, bool &AteExtraComma);
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    bool ParseOptionalCommaInAlloca(bool &IsInAlloca);
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    bool ParseIndexList(SmallVectorImpl<unsigned> &Indices,bool &AteExtraComma);
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    bool ParseIndexList(SmallVectorImpl<unsigned> &Indices) {
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      bool AteExtraComma;
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      if (ParseIndexList(Indices, AteExtraComma)) return true;
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      if (AteExtraComma)
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        return TokError("expected index");
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      return false;
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    }
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    // Top-Level Entities
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    bool ParseTopLevelEntities();
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    bool ValidateEndOfModule();
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    bool ParseTargetDefinition();
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    bool ParseModuleAsm();
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    bool ParseDepLibs();        // FIXME: Remove in 4.0.
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    bool ParseUnnamedType();
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    bool ParseNamedType();
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    bool ParseDeclare();
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    bool ParseDefine();
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    bool ParseGlobalType(bool &IsConstant);
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    bool ParseUnnamedGlobal();
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    bool ParseNamedGlobal();
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    bool ParseGlobal(const std::string &Name, LocTy Loc, unsigned Linkage,
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                     bool HasLinkage, unsigned Visibility,
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                     unsigned DLLStorageClass,
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                     GlobalVariable::ThreadLocalMode TLM, bool UnnamedAddr);
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    bool ParseAlias(const std::string &Name, LocTy Loc, unsigned Linkage,
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                    unsigned Visibility, unsigned DLLStorageClass,
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                    GlobalVariable::ThreadLocalMode TLM, bool UnnamedAddr);
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    bool parseComdat();
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    bool ParseStandaloneMetadata();
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    bool ParseNamedMetadata();
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    bool ParseMDString(MDString *&Result);
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    bool ParseMDNodeID(MDNode *&Result);
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    bool ParseUnnamedAttrGrp();
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    bool ParseFnAttributeValuePairs(AttrBuilder &B,
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                                    std::vector<unsigned> &FwdRefAttrGrps,
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                                    bool inAttrGrp, LocTy &BuiltinLoc);
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    // Type Parsing.
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    bool ParseType(Type *&Result, const Twine &Msg, bool AllowVoid = false);
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    bool ParseType(Type *&Result, bool AllowVoid = false) {
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      return ParseType(Result, "expected type", AllowVoid);
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    }
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    bool ParseType(Type *&Result, const Twine &Msg, LocTy &Loc,
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                   bool AllowVoid = false) {
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      Loc = Lex.getLoc();
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      return ParseType(Result, Msg, AllowVoid);
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    }
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    bool ParseType(Type *&Result, LocTy &Loc, bool AllowVoid = false) {
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      Loc = Lex.getLoc();
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      return ParseType(Result, AllowVoid);
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    }
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    bool ParseAnonStructType(Type *&Result, bool Packed);
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    bool ParseStructBody(SmallVectorImpl<Type*> &Body);
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    bool ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
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                               std::pair<Type*, LocTy> &Entry,
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                               Type *&ResultTy);
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    bool ParseArrayVectorType(Type *&Result, bool isVector);
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    bool ParseFunctionType(Type *&Result);
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    // Function Semantic Analysis.
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    class PerFunctionState {
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      LLParser &P;
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      Function &F;
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      std::map<std::string, std::pair<Value*, LocTy> > ForwardRefVals;
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      std::map<unsigned, std::pair<Value*, LocTy> > ForwardRefValIDs;
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      std::vector<Value*> NumberedVals;
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      /// FunctionNumber - If this is an unnamed function, this is the slot
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      /// number of it, otherwise it is -1.
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      int FunctionNumber;
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    public:
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      PerFunctionState(LLParser &p, Function &f, int FunctionNumber);
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      ~PerFunctionState();
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      Function &getFunction() const { return F; }
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      bool FinishFunction();
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      /// GetVal - Get a value with the specified name or ID, creating a
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      /// forward reference record if needed.  This can return null if the value
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      /// exists but does not have the right type.
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      Value *GetVal(const std::string &Name, Type *Ty, LocTy Loc);
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      Value *GetVal(unsigned ID, Type *Ty, LocTy Loc);
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      /// SetInstName - After an instruction is parsed and inserted into its
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      /// basic block, this installs its name.
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      bool SetInstName(int NameID, const std::string &NameStr, LocTy NameLoc,
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                       Instruction *Inst);
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      /// GetBB - Get a basic block with the specified name or ID, creating a
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      /// forward reference record if needed.  This can return null if the value
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      /// is not a BasicBlock.
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      BasicBlock *GetBB(const std::string &Name, LocTy Loc);
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      BasicBlock *GetBB(unsigned ID, LocTy Loc);
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      /// DefineBB - Define the specified basic block, which is either named or
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      /// unnamed.  If there is an error, this returns null otherwise it returns
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      /// the block being defined.
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      BasicBlock *DefineBB(const std::string &Name, LocTy Loc);
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      bool resolveForwardRefBlockAddresses();
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    };
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    bool ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
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                             PerFunctionState *PFS);
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    bool ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS);
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    bool ParseValue(Type *Ty, Value *&V, PerFunctionState &PFS) {
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      return ParseValue(Ty, V, &PFS);
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    }
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    bool ParseValue(Type *Ty, Value *&V, LocTy &Loc,
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                    PerFunctionState &PFS) {
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      Loc = Lex.getLoc();
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      return ParseValue(Ty, V, &PFS);
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    }
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    bool ParseTypeAndValue(Value *&V, PerFunctionState *PFS);
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    bool ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
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      return ParseTypeAndValue(V, &PFS);
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    }
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    bool ParseTypeAndValue(Value *&V, LocTy &Loc, PerFunctionState &PFS) {
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      Loc = Lex.getLoc();
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      return ParseTypeAndValue(V, PFS);
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    }
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    bool ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
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                                PerFunctionState &PFS);
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    bool ParseTypeAndBasicBlock(BasicBlock *&BB, PerFunctionState &PFS) {
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      LocTy Loc;
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      return ParseTypeAndBasicBlock(BB, Loc, PFS);
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    }
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    struct ParamInfo {
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      LocTy Loc;
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      Value *V;
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      AttributeSet Attrs;
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      ParamInfo(LocTy loc, Value *v, AttributeSet attrs)
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        : Loc(loc), V(v), Attrs(attrs) {}
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    };
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    bool ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
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                            PerFunctionState &PFS,
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                            bool IsMustTailCall = false,
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                            bool InVarArgsFunc = false);
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    // Constant Parsing.
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    bool ParseValID(ValID &ID, PerFunctionState *PFS = nullptr);
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    bool ParseGlobalValue(Type *Ty, Constant *&V);
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    bool ParseGlobalTypeAndValue(Constant *&V);
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    bool ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts);
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    bool parseOptionalComdat(StringRef GlobalName, Comdat *&C);
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    bool ParseMetadataAsValue(Value *&V, PerFunctionState &PFS);
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    bool ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
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                              PerFunctionState *PFS);
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    bool ParseMetadata(Metadata *&MD, PerFunctionState *PFS);
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    bool ParseMDTuple(MDNode *&MD, bool IsDistinct = false);
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    bool ParseMDNode(MDNode *&MD);
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    bool ParseMDNodeTail(MDNode *&MD);
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    bool ParseMDNodeVector(SmallVectorImpl<Metadata *> &MDs);
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    bool ParseMetadataAttachment(unsigned &Kind, MDNode *&MD);
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    bool ParseInstructionMetadata(Instruction &Inst);
 | 
						|
    bool ParseOptionalFunctionMetadata(Function &F);
 | 
						|
 | 
						|
    template <class FieldTy>
 | 
						|
    bool ParseMDField(LocTy Loc, StringRef Name, FieldTy &Result);
 | 
						|
    template <class FieldTy> bool ParseMDField(StringRef Name, FieldTy &Result);
 | 
						|
    template <class ParserTy>
 | 
						|
    bool ParseMDFieldsImplBody(ParserTy parseField);
 | 
						|
    template <class ParserTy>
 | 
						|
    bool ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc);
 | 
						|
    bool ParseSpecializedMDNode(MDNode *&N, bool IsDistinct = false);
 | 
						|
 | 
						|
#define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS)                                  \
 | 
						|
  bool Parse##CLASS(MDNode *&Result, bool IsDistinct);
 | 
						|
#include "llvm/IR/Metadata.def"
 | 
						|
 | 
						|
    // 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);
 | 
						|
 | 
						|
    enum TailCallType { TCT_None, TCT_Tail, TCT_MustTail };
 | 
						|
 | 
						|
    // 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,
 | 
						|
                   CallInst::TailCallKind 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);
 | 
						|
 | 
						|
    // Use-list order directives.
 | 
						|
    bool ParseUseListOrder(PerFunctionState *PFS = nullptr);
 | 
						|
    bool ParseUseListOrderBB();
 | 
						|
    bool ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes);
 | 
						|
    bool sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes, SMLoc Loc);
 | 
						|
  };
 | 
						|
} // namespace llvm
 | 
						|
 | 
						|
#endif
 |