C++ ParmVarDecl::getType方法代码示例

//---------------------------------------------------------------------------
void TransformWCR::CheckParmVarDecls(FunctionDecl *FD, StmtVector &Body,
                                     StmtVector &WCR) {
  // If some function parameters are modified in the function body,
  // they should be saved in some temporal variables.
  for (unsigned i = 0, e = FD->getNumParams(); i < e; ++i) {
    ParmVarDecl *PD = FD->getParamDecl(i);
    if (PD->isModified()) {
      SourceLocation SL;

      // T __cl_parm_PD;
      VarDecl *VD = NewVarDeclForParameter(PD);
      VD->setInit(NULL);
      Body.push_back(NewDeclStmt(VD));

      // __cl_parm_PD = PD;
      DeclRefExpr *Init_LHS = new (ASTCtx) DeclRefExpr(VD, VD->getType(),
                                                       VK_RValue, SL);
      DeclRefExpr *Init_RHS = new (ASTCtx) DeclRefExpr(PD, PD->getType(),
                                                       VK_RValue, SL);
      Expr *InitExpr = new (ASTCtx) BinaryOperator(Init_LHS, Init_RHS,
          BO_Assign, PD->getType(), VK_RValue, OK_Ordinary, SL);
      Body.push_back(InitExpr);

      // PD = __cl_parm_PD;
      DeclRefExpr *LHS = new (ASTCtx) DeclRefExpr(PD, PD->getType(),
                                                  VK_RValue, SL);
      DeclRefExpr *RHS = new (ASTCtx) DeclRefExpr(VD, VD->getType(),
                                                  VK_RValue, SL);
      Expr *RestoreExpr = new (ASTCtx) BinaryOperator(LHS, RHS, BO_Assign,
          PD->getType(), VK_RValue, OK_Ordinary, SL);
      WCR.push_back(RestoreExpr);
    }
  }
}

static bool isInterestingSecondMethod(CXXMethodDecl *method)
{
    if (!method)
        return false;

    if (method->getParent()->getNameAsString() != "QString")
        return false;

    static const vector<string> list = { "compare", "contains", "count", "startsWith", "endsWith", "indexOf",
                                         "isEmpty", "isNull", "lastIndexOf", "length", "size", "toDouble", "toInt",
                                         "toUInt", "toULong", "toULongLong", "toUShort", "toUcs4"};
    const bool isInList = std::find(list.cbegin(), list.cend(), method->getNameAsString()) != list.cend();
    if (!isInList)
        return false;

    if (method->getNumParams() > 0) {
        // Check any argument is a QRegExp or QRegularExpression
        ParmVarDecl *firstParam = method->getParamDecl(0);
        if (firstParam) {
            const string paramSig = firstParam->getType().getAsString();
            if (paramSig == "const class QRegExp &" || paramSig == "class QRegExp &" || paramSig == "const class QRegularExpression &")
                return false;
        }
    }

    return true;
}

void DeclPrinter::PrintObjCMethodDecl(ObjCMethodDecl *OMD) {
	if (OMD->isInstance())
		Out << "\n- ";
	else 
		Out << "\n+ ";
	if (!OMD->getResultType().isNull())
		Out << '(' << OMD->getResultType().getAsString() << ") ";
	// FIXME: just print original selector name!
	Out << OMD->getSelector().getName();

	for (int i = 0; i < OMD->getNumParams(); i++) {
		ParmVarDecl *PDecl = OMD->getParamDecl(i);
		// FIXME: selector is missing here!    
		Out << " :(" << PDecl->getType().getAsString() << ") " << PDecl->getName(); 
	}
}

void edmChecker::checkASTDecl(const clang::CXXRecordDecl *RD, clang::ento::AnalysisManager& mgr,
                    clang::ento::BugReporter &BR) const {

	const clang::SourceManager &SM = BR.getSourceManager();
	clang::ento::PathDiagnosticLocation DLoc =clang::ento::PathDiagnosticLocation::createBegin( RD, SM );
	if (  !m_exception.reportClass( DLoc, BR ) ) return;
// Check the class methods (member methods).
	for (clang::CXXRecordDecl::method_iterator
		I = RD->method_begin(), E = RD->method_end(); I != E; ++I)  
	{      
		if ( !llvm::isa<clang::CXXMethodDecl>((*I)) ) continue;
		clang::CXXMethodDecl * MD = llvm::cast<clang::CXXMethodDecl>((*I));
			if ( MD->getNameAsString() == "beginRun" 
				|| MD->getNameAsString() == "endRun" 
				|| MD->getNameAsString() == "beginLuminosityBlock" 
				|| MD->getNameAsString() == "endLuminosityBlock" )
			{
//				llvm::errs()<<MD->getQualifiedNameAsString()<<"\n";	
				for (auto J=RD->bases_begin(), F=RD->bases_end();J != F; ++J)
					{  
					std::string name = J->getType()->castAs<RecordType>()->getDecl()->getQualifiedNameAsString();
//					llvm::errs()<<RD->getQualifiedNameAsString()<<"\n";	
//					llvm::errs() << "inherits from " <<name<<"\n";
					if (name=="edm::EDProducer" || name=="edm::EDFilter")
						{
						llvm::SmallString<100> buf;
						llvm::raw_svector_ostream os(buf);
						os << RD->getQualifiedNameAsString() << " inherits from edm::EDProducer or edm::EDFilter";
						os << "\n";
						llvm::errs()<<os.str();

						CXXMethodDecl::param_iterator I = MD->param_begin();
						ParmVarDecl * PVD = *(I);
						QualType PQT = PVD->getType();
						if ( PQT->isReferenceType() ) {
							QualType RQT = PQT->getPointeeType();
							if (RQT.isConstQualified()) continue;
						}
						clang::ento::PathDiagnosticLocation ELoc =clang::ento::PathDiagnosticLocation::createBegin( MD, SM );
						clang::SourceLocation SL = MD->getLocStart();
						BR.EmitBasicReport(MD, "Class Checker : inherits from edm::EDProducer or edm::EDFilter","optional",os.str(),ELoc,SL);
						}
					}
			}
	}
} //end of class

static bool isArgOfFunc(T expr, FunctionDecl *fDecl, const VarDecl *varDecl, bool byRefOrPtrOnly)
{
    unsigned int param = -1;
    for (auto arg : expr->arguments()) {
        ++param;
        DeclRefExpr *refExpr = dyn_cast<DeclRefExpr>(arg);
        if (!refExpr)  {
            if (clazy_std::hasChildren(arg)) {
                Stmt* firstChild = *(arg->child_begin()); // Can be null (bug #362236)
                refExpr = firstChild ? dyn_cast<DeclRefExpr>(firstChild) : nullptr;
                if (!refExpr)
                    continue;
            } else {
                continue;
            }
        }

        if (refExpr->getDecl() != varDecl) // It's our variable ?
            continue;

        if (!byRefOrPtrOnly) {
            // We found it
            return true;
        }

        // It is, lets see if the callee takes our variable by const-ref
        if (param >= fDecl->param_size())
            continue;

        ParmVarDecl *paramDecl = fDecl->getParamDecl(param);
        if (!paramDecl)
            continue;

        QualType qt = paramDecl->getType();
        const Type *t = qt.getTypePtrOrNull();
        if (!t)
            continue;

        if ((t->isReferenceType() || t->isPointerType()) && !t->getPointeeType().isConstQualified())
            return true; // function receives non-const ref, so our foreach variable cant be const-ref
    }

    return false;
}

static bool isCandidateMethod(CXXMethodDecl *methodDecl)
{
    if (!methodDecl)
        return false;

    CXXRecordDecl *classDecl = methodDecl->getParent();
    if (!classDecl)
        return false;

    if (!clazy_std::equalsAny(methodDecl->getNameAsString(), { "append", "push_back", "push", "operator<<", "operator+=" }))
        return false;

    if (!QtUtils::isAReserveClass(classDecl))
        return false;

    // Catch cases like: QList<T>::append(const QList<T> &), which don't make sense to reserve.
    // In this case, the parameter has the same type of the class
    ParmVarDecl *parm = methodDecl->getParamDecl(0);
    if (paramIsSameTypeAs(parm->getType().getTypePtrOrNull(), classDecl))
        return false;

    return true;
}

static bool isInterestingFunction(FunctionDecl *func)
{
    if (!func)
        return false;

    // The interesting function calls for the pointertoBool check are those having bool and also pointer arguments,
    // which might get mixed

    bool hasBoolArgument = false;
    bool hasPointerArgument = false;

    for (auto it = func->param_begin(), end = func->param_end(); it != end; ++it) {

        ParmVarDecl *param = *it;
        const Type *t = param->getType().getTypePtrOrNull();
        hasBoolArgument |= (t && t->isBooleanType());
        hasPointerArgument |= (t && t->isPointerType());

        if (hasBoolArgument && hasPointerArgument)
            return true;
    }

    return false;
}

bool Sema::containsUnexpandedParameterPacks(Declarator &D) {
  const DeclSpec &DS = D.getDeclSpec();
  switch (DS.getTypeSpecType()) {
  case TST_typename:
  case TST_typeofType:
  case TST_underlyingType:
  case TST_atomic: {
    QualType T = DS.getRepAsType().get();
    if (!T.isNull() && T->containsUnexpandedParameterPack())
      return true;
    break;
  }

  case TST_typeofExpr:
  case TST_decltype:
    if (DS.getRepAsExpr() &&
        DS.getRepAsExpr()->containsUnexpandedParameterPack())
      return true;
    break;

  case TST_unspecified:
  case TST_void:
  case TST_char:
  case TST_wchar:
  case TST_char16:
  case TST_char32:
  case TST_int:
  case TST_int128:
  case TST_half:
  case TST_float:
  case TST_double:
  case TST_bool:
  case TST_decimal32:
  case TST_decimal64:
  case TST_decimal128:
  case TST_enum:
  case TST_union:
  case TST_struct:
  case TST_interface:
  case TST_class:
  case TST_auto:
  case TST_decltype_auto:
  case TST_unknown_anytype:
  case TST_error:
    break;
  }

  for (unsigned I = 0, N = D.getNumTypeObjects(); I != N; ++I) {
    const DeclaratorChunk &Chunk = D.getTypeObject(I);
    switch (Chunk.Kind) {
    case DeclaratorChunk::Pointer:
    case DeclaratorChunk::Reference:
    case DeclaratorChunk::Paren:
    case DeclaratorChunk::BlockPointer:
      // These declarator chunks cannot contain any parameter packs.
      break;

    case DeclaratorChunk::Array:
      if (Chunk.Arr.NumElts &&
          Chunk.Arr.NumElts->containsUnexpandedParameterPack())
        return true;
      break;
    case DeclaratorChunk::Function:
      for (unsigned i = 0, e = Chunk.Fun.NumParams; i != e; ++i) {
        ParmVarDecl *Param = cast<ParmVarDecl>(Chunk.Fun.Params[i].Param);
        QualType ParamTy = Param->getType();
        assert(!ParamTy.isNull() && "Couldn't parse type?");
        if (ParamTy->containsUnexpandedParameterPack()) return true;
      }

      if (Chunk.Fun.getExceptionSpecType() == EST_Dynamic) {
        for (unsigned i = 0; i != Chunk.Fun.NumExceptions; ++i) {
          if (Chunk.Fun.Exceptions[i]
                  .Ty.get()
                  ->containsUnexpandedParameterPack())
            return true;
        }
      } else if (Chunk.Fun.getExceptionSpecType() == EST_ComputedNoexcept &&
                 Chunk.Fun.NoexceptExpr->containsUnexpandedParameterPack())
        return true;

      if (Chunk.Fun.hasTrailingReturnType()) {
        QualType T = Chunk.Fun.getTrailingReturnType().get();
	if (!T.isNull() && T->containsUnexpandedParameterPack())
	  return true;
      }
      break;

    case DeclaratorChunk::MemberPointer:
      if (Chunk.Mem.Scope().getScopeRep() &&
          Chunk.Mem.Scope().getScopeRep()->containsUnexpandedParameterPack())
        return true;
      break;
    }
  }

  return false;
}

ExprResult Sema::BuildBlockForLambdaConversion(SourceLocation CurrentLocation,
                                               SourceLocation ConvLocation,
                                               CXXConversionDecl *Conv,
                                               Expr *Src) {
  // Make sure that the lambda call operator is marked used.
  CXXRecordDecl *Lambda = Conv->getParent();
  CXXMethodDecl *CallOperator 
    = cast<CXXMethodDecl>(
        *Lambda->lookup(
          Context.DeclarationNames.getCXXOperatorName(OO_Call)).first);
  CallOperator->setReferenced();
  CallOperator->setUsed();

  ExprResult Init = PerformCopyInitialization(
                      InitializedEntity::InitializeBlock(ConvLocation, 
                                                         Src->getType(), 
                                                         /*NRVO=*/false),
                      CurrentLocation, Src);
  if (!Init.isInvalid())
    Init = ActOnFinishFullExpr(Init.take());
  
  if (Init.isInvalid())
    return ExprError();
  
  // Create the new block to be returned.
  BlockDecl *Block = BlockDecl::Create(Context, CurContext, ConvLocation);

  // Set the type information.
  Block->setSignatureAsWritten(CallOperator->getTypeSourceInfo());
  Block->setIsVariadic(CallOperator->isVariadic());
  Block->setBlockMissingReturnType(false);

  // Add parameters.
  SmallVector<ParmVarDecl *, 4> BlockParams;
  for (unsigned I = 0, N = CallOperator->getNumParams(); I != N; ++I) {
    ParmVarDecl *From = CallOperator->getParamDecl(I);
    BlockParams.push_back(ParmVarDecl::Create(Context, Block,
                                              From->getLocStart(),
                                              From->getLocation(),
                                              From->getIdentifier(),
                                              From->getType(),
                                              From->getTypeSourceInfo(),
                                              From->getStorageClass(),
                                            From->getStorageClassAsWritten(),
                                              /*DefaultArg=*/0));
  }
  Block->setParams(BlockParams);

  Block->setIsConversionFromLambda(true);

  // Add capture. The capture uses a fake variable, which doesn't correspond
  // to any actual memory location. However, the initializer copy-initializes
  // the lambda object.
  TypeSourceInfo *CapVarTSI =
      Context.getTrivialTypeSourceInfo(Src->getType());
  VarDecl *CapVar = VarDecl::Create(Context, Block, ConvLocation,
                                    ConvLocation, 0,
                                    Src->getType(), CapVarTSI,
                                    SC_None, SC_None);
  BlockDecl::Capture Capture(/*Variable=*/CapVar, /*ByRef=*/false,
                             /*Nested=*/false, /*Copy=*/Init.take());
  Block->setCaptures(Context, &Capture, &Capture + 1, 
                     /*CapturesCXXThis=*/false);

  // Add a fake function body to the block. IR generation is responsible
  // for filling in the actual body, which cannot be expressed as an AST.
  Block->setBody(new (Context) CompoundStmt(ConvLocation));

  // Create the block literal expression.
  Expr *BuildBlock = new (Context) BlockExpr(Block, Conv->getConversionType());
  ExprCleanupObjects.push_back(Block);
  ExprNeedsCleanups = true;

  return BuildBlock;
}

/// \brief Add a lambda's conversion to function pointer, as described in
/// C++11 [expr.prim.lambda]p6.
static void addFunctionPointerConversion(Sema &S, 
                                         SourceRange IntroducerRange,
                                         CXXRecordDecl *Class,
                                         CXXMethodDecl *CallOperator) {
  // Add the conversion to function pointer.
  const FunctionProtoType *Proto
    = CallOperator->getType()->getAs<FunctionProtoType>(); 
  QualType FunctionPtrTy;
  QualType FunctionTy;
  {
    FunctionProtoType::ExtProtoInfo ExtInfo = Proto->getExtProtoInfo();
    ExtInfo.TypeQuals = 0;
    FunctionTy = S.Context.getFunctionType(Proto->getResultType(),
                                           Proto->arg_type_begin(),
                                           Proto->getNumArgs(),
                                           ExtInfo);
    FunctionPtrTy = S.Context.getPointerType(FunctionTy);
  }
  
  FunctionProtoType::ExtProtoInfo ExtInfo;
  ExtInfo.TypeQuals = Qualifiers::Const;
  QualType ConvTy = S.Context.getFunctionType(FunctionPtrTy, 0, 0, ExtInfo);
  
  SourceLocation Loc = IntroducerRange.getBegin();
  DeclarationName Name
    = S.Context.DeclarationNames.getCXXConversionFunctionName(
        S.Context.getCanonicalType(FunctionPtrTy));
  DeclarationNameLoc NameLoc;
  NameLoc.NamedType.TInfo = S.Context.getTrivialTypeSourceInfo(FunctionPtrTy,
                                                               Loc);
  CXXConversionDecl *Conversion 
    = CXXConversionDecl::Create(S.Context, Class, Loc, 
                                DeclarationNameInfo(Name, Loc, NameLoc),
                                ConvTy, 
                                S.Context.getTrivialTypeSourceInfo(ConvTy, 
                                                                   Loc),
                                /*isInline=*/false, /*isExplicit=*/false,
                                /*isConstexpr=*/false, 
                                CallOperator->getBody()->getLocEnd());
  Conversion->setAccess(AS_public);
  Conversion->setImplicit(true);
  Class->addDecl(Conversion);
  
  // Add a non-static member function "__invoke" that will be the result of
  // the conversion.
  Name = &S.Context.Idents.get("__invoke");
  CXXMethodDecl *Invoke
    = CXXMethodDecl::Create(S.Context, Class, Loc, 
                            DeclarationNameInfo(Name, Loc), FunctionTy, 
                            CallOperator->getTypeSourceInfo(),
                            /*IsStatic=*/true, SC_Static, /*IsInline=*/true,
                            /*IsConstexpr=*/false, 
                            CallOperator->getBody()->getLocEnd());
  SmallVector<ParmVarDecl *, 4> InvokeParams;
  for (unsigned I = 0, N = CallOperator->getNumParams(); I != N; ++I) {
    ParmVarDecl *From = CallOperator->getParamDecl(I);
    InvokeParams.push_back(ParmVarDecl::Create(S.Context, Invoke,
                                               From->getLocStart(),
                                               From->getLocation(),
                                               From->getIdentifier(),
                                               From->getType(),
                                               From->getTypeSourceInfo(),
                                               From->getStorageClass(),
                                               From->getStorageClassAsWritten(),
                                               /*DefaultArg=*/0));
  }
  Invoke->setParams(InvokeParams);
  Invoke->setAccess(AS_private);
  Invoke->setImplicit(true);
  Class->addDecl(Invoke);
}

llvm::Constant *
CodeGenFunction::GenerateCovariantThunk(llvm::Function *Fn,
                                   GlobalDecl GD, bool Extern,
                                   const CovariantThunkAdjustment &Adjustment) {
  const CXXMethodDecl *MD = cast<CXXMethodDecl>(GD.getDecl());
  const FunctionProtoType *FPT = MD->getType()->getAs<FunctionProtoType>();
  QualType ResultType = FPT->getResultType();

  FunctionArgList Args;
  ImplicitParamDecl *ThisDecl =
    ImplicitParamDecl::Create(getContext(), 0, SourceLocation(), 0,
                              MD->getThisType(getContext()));
  Args.push_back(std::make_pair(ThisDecl, ThisDecl->getType()));
  for (FunctionDecl::param_const_iterator i = MD->param_begin(),
         e = MD->param_end();
       i != e; ++i) {
    ParmVarDecl *D = *i;
    Args.push_back(std::make_pair(D, D->getType()));
  }
  IdentifierInfo *II
    = &CGM.getContext().Idents.get("__thunk_named_foo_");
  FunctionDecl *FD = FunctionDecl::Create(getContext(),
                                          getContext().getTranslationUnitDecl(),
                                          SourceLocation(), II, ResultType, 0,
                                          Extern
                                            ? FunctionDecl::Extern
                                            : FunctionDecl::Static,
                                          false, true);
  StartFunction(FD, ResultType, Fn, Args, SourceLocation());

  // generate body
  const llvm::Type *Ty =
    CGM.getTypes().GetFunctionType(CGM.getTypes().getFunctionInfo(MD),
                                   FPT->isVariadic());
  llvm::Value *Callee = CGM.GetAddrOfFunction(GD, Ty);

  CallArgList CallArgs;

  bool ShouldAdjustReturnPointer = true;
  QualType ArgType = MD->getThisType(getContext());
  llvm::Value *Arg = Builder.CreateLoad(LocalDeclMap[ThisDecl], "this");
  if (!Adjustment.ThisAdjustment.isEmpty()) {
    // Do the this adjustment.
    const llvm::Type *OrigTy = Callee->getType();
    Arg = DynamicTypeAdjust(Arg, Adjustment.ThisAdjustment);
    
    if (!Adjustment.ReturnAdjustment.isEmpty()) {
      const CovariantThunkAdjustment &ReturnAdjustment = 
        CovariantThunkAdjustment(ThunkAdjustment(),
                                 Adjustment.ReturnAdjustment);
      
      Callee = CGM.BuildCovariantThunk(GD, Extern, ReturnAdjustment);
      
      Callee = Builder.CreateBitCast(Callee, OrigTy);
      ShouldAdjustReturnPointer = false;
    }
  }    

  CallArgs.push_back(std::make_pair(RValue::get(Arg), ArgType));

  for (FunctionDecl::param_const_iterator i = MD->param_begin(),
         e = MD->param_end();
       i != e; ++i) {
    ParmVarDecl *D = *i;
    QualType ArgType = D->getType();

    // llvm::Value *Arg = CGF.GetAddrOfLocalVar(Dst);
    Expr *Arg = new (getContext()) DeclRefExpr(D, ArgType.getNonReferenceType(),
                                               SourceLocation());
    CallArgs.push_back(std::make_pair(EmitCallArg(Arg, ArgType), ArgType));
  }

  RValue RV = EmitCall(CGM.getTypes().getFunctionInfo(ResultType, CallArgs,
                                                      FPT->getCallConv(),
                                                      FPT->getNoReturnAttr()),
                       Callee, ReturnValueSlot(), CallArgs, MD);
  if (ShouldAdjustReturnPointer && !Adjustment.ReturnAdjustment.isEmpty()) {
    bool CanBeZero = !(ResultType->isReferenceType()
    // FIXME: attr nonnull can't be zero either
                       /* || ResultType->hasAttr<NonNullAttr>() */ );
    // Do the return result adjustment.
    if (CanBeZero) {
      llvm::BasicBlock *NonZeroBlock = createBasicBlock();
      llvm::BasicBlock *ZeroBlock = createBasicBlock();
      llvm::BasicBlock *ContBlock = createBasicBlock();

      const llvm::Type *Ty = RV.getScalarVal()->getType();
      llvm::Value *Zero = llvm::Constant::getNullValue(Ty);
      Builder.CreateCondBr(Builder.CreateICmpNE(RV.getScalarVal(), Zero),
                           NonZeroBlock, ZeroBlock);
      EmitBlock(NonZeroBlock);
      llvm::Value *NZ = 
        DynamicTypeAdjust(RV.getScalarVal(), Adjustment.ReturnAdjustment);
      EmitBranch(ContBlock);
      EmitBlock(ZeroBlock);
      llvm::Value *Z = RV.getScalarVal();
      EmitBlock(ContBlock);
      llvm::PHINode *RVOrZero = Builder.CreatePHI(Ty);
      RVOrZero->reserveOperandSpace(2);
      RVOrZero->addIncoming(NZ, NonZeroBlock);
//.........这里部分代码省略.........

/// HandleExprPropertyRefExpr - Handle foo.bar where foo is a pointer to an
/// objective C interface.  This is a property reference expression.
ExprResult Sema::
HandleExprPropertyRefExpr(const ObjCObjectPointerType *OPT,
                          Expr *BaseExpr, DeclarationName MemberName,
                          SourceLocation MemberLoc,
                          SourceLocation SuperLoc, QualType SuperType,
                          bool Super) {
  const ObjCInterfaceType *IFaceT = OPT->getInterfaceType();
  ObjCInterfaceDecl *IFace = IFaceT->getDecl();
  IdentifierInfo *Member = MemberName.getAsIdentifierInfo();

  if (IFace->isForwardDecl()) {
    Diag(MemberLoc, diag::err_property_not_found_forward_class)
         << MemberName << QualType(OPT, 0);
    Diag(IFace->getLocation(), diag::note_forward_class);
    return ExprError();
  }
  // Search for a declared property first.
  if (ObjCPropertyDecl *PD = IFace->FindPropertyDeclaration(Member)) {
    // Check whether we can reference this property.
    if (DiagnoseUseOfDecl(PD, MemberLoc))
      return ExprError();
    QualType ResTy = PD->getType();
    Selector Sel = PP.getSelectorTable().getNullarySelector(Member);
    ObjCMethodDecl *Getter = IFace->lookupInstanceMethod(Sel);
    if (DiagnosePropertyAccessorMismatch(PD, Getter, MemberLoc))
      ResTy = Getter->getResultType();

    if (Super)
      return Owned(new (Context) ObjCPropertyRefExpr(PD, ResTy,
                                                     VK_LValue, OK_ObjCProperty,
                                                     MemberLoc, 
                                                     SuperLoc, SuperType));
    else
      return Owned(new (Context) ObjCPropertyRefExpr(PD, ResTy,
                                                     VK_LValue, OK_ObjCProperty,
                                                     MemberLoc, BaseExpr));
  }
  // Check protocols on qualified interfaces.
  for (ObjCObjectPointerType::qual_iterator I = OPT->qual_begin(),
       E = OPT->qual_end(); I != E; ++I)
    if (ObjCPropertyDecl *PD = (*I)->FindPropertyDeclaration(Member)) {
      // Check whether we can reference this property.
      if (DiagnoseUseOfDecl(PD, MemberLoc))
        return ExprError();
      if (Super)
        return Owned(new (Context) ObjCPropertyRefExpr(PD, PD->getType(),
                                                       VK_LValue,
                                                       OK_ObjCProperty,
                                                       MemberLoc, 
                                                       SuperLoc, SuperType));
      else
        return Owned(new (Context) ObjCPropertyRefExpr(PD, PD->getType(),
                                                       VK_LValue,
                                                       OK_ObjCProperty,
                                                       MemberLoc,
                                                       BaseExpr));
    }
  // If that failed, look for an "implicit" property by seeing if the nullary
  // selector is implemented.

  // FIXME: The logic for looking up nullary and unary selectors should be
  // shared with the code in ActOnInstanceMessage.

  Selector Sel = PP.getSelectorTable().getNullarySelector(Member);
  ObjCMethodDecl *Getter = IFace->lookupInstanceMethod(Sel);
  
  // May be founf in property's qualified list.
  if (!Getter)
    Getter = LookupMethodInQualifiedType(Sel, OPT, true);

  // If this reference is in an @implementation, check for 'private' methods.
  if (!Getter)
    Getter = IFace->lookupPrivateMethod(Sel);

  // Look through local category implementations associated with the class.
  if (!Getter)
    Getter = IFace->getCategoryInstanceMethod(Sel);
  if (Getter) {
    // Check if we can reference this property.
    if (DiagnoseUseOfDecl(Getter, MemberLoc))
      return ExprError();
  }
  // If we found a getter then this may be a valid dot-reference, we
  // will look for the matching setter, in case it is needed.
  Selector SetterSel =
    SelectorTable::constructSetterName(PP.getIdentifierTable(),
                                       PP.getSelectorTable(), Member);
  ObjCMethodDecl *Setter = IFace->lookupInstanceMethod(SetterSel);
  
  // May be founf in property's qualified list.
  if (!Setter)
    Setter = LookupMethodInQualifiedType(SetterSel, OPT, true);
  
  if (!Setter) {
    // If this reference is in an @implementation, also check for 'private'
    // methods.
    Setter = IFace->lookupPrivateMethod(SetterSel);
  }
//.........这里部分代码省略.........

bool Sema::CheckMessageArgumentTypes(Expr **Args, unsigned NumArgs,
                                     Selector Sel, ObjCMethodDecl *Method,
                                     bool isClassMessage,
                                     SourceLocation lbrac, SourceLocation rbrac,
                                     QualType &ReturnType, ExprValueKind &VK) {
  if (!Method) {
    // Apply default argument promotion as for (C99 6.5.2.2p6).
    for (unsigned i = 0; i != NumArgs; i++) {
      if (Args[i]->isTypeDependent())
        continue;

      DefaultArgumentPromotion(Args[i]);
    }

    unsigned DiagID = isClassMessage ? diag::warn_class_method_not_found :
                                       diag::warn_inst_method_not_found;
    Diag(lbrac, DiagID)
      << Sel << isClassMessage << SourceRange(lbrac, rbrac);
    ReturnType = Context.getObjCIdType();
    VK = VK_RValue;
    return false;
  }

  ReturnType = Method->getSendResultType();
  VK = Expr::getValueKindForType(Method->getResultType());

  unsigned NumNamedArgs = Sel.getNumArgs();
  // Method might have more arguments than selector indicates. This is due
  // to addition of c-style arguments in method.
  if (Method->param_size() > Sel.getNumArgs())
    NumNamedArgs = Method->param_size();
  // FIXME. This need be cleaned up.
  if (NumArgs < NumNamedArgs) {
    Diag(lbrac, diag::err_typecheck_call_too_few_args)
      << 2 << NumNamedArgs << NumArgs;
    return false;
  }

  bool IsError = false;
  for (unsigned i = 0; i < NumNamedArgs; i++) {
    // We can't do any type-checking on a type-dependent argument.
    if (Args[i]->isTypeDependent())
      continue;

    Expr *argExpr = Args[i];

    ParmVarDecl *Param = Method->param_begin()[i];
    assert(argExpr && "CheckMessageArgumentTypes(): missing expression");

    if (RequireCompleteType(argExpr->getSourceRange().getBegin(),
                            Param->getType(),
                            PDiag(diag::err_call_incomplete_argument)
                              << argExpr->getSourceRange()))
      return true;

    InitializedEntity Entity = InitializedEntity::InitializeParameter(Context,
                                                                      Param);
    ExprResult ArgE = PerformCopyInitialization(Entity, lbrac, Owned(argExpr));
    if (ArgE.isInvalid())
      IsError = true;
    else
      Args[i] = ArgE.takeAs<Expr>();
  }

  // Promote additional arguments to variadic methods.
  if (Method->isVariadic()) {
    for (unsigned i = NumNamedArgs; i < NumArgs; ++i) {
      if (Args[i]->isTypeDependent())
        continue;

      IsError |= DefaultVariadicArgumentPromotion(Args[i], VariadicMethod, 0);
    }
  } else {
    // Check for extra arguments to non-variadic methods.
    if (NumArgs != NumNamedArgs) {
      Diag(Args[NumNamedArgs]->getLocStart(),
           diag::err_typecheck_call_too_many_args)
        << 2 /*method*/ << NumNamedArgs << NumArgs
        << Method->getSourceRange()
        << SourceRange(Args[NumNamedArgs]->getLocStart(),
                       Args[NumArgs-1]->getLocEnd());
    }
  }

  DiagnoseSentinelCalls(Method, lbrac, Args, NumArgs);
  return IsError;
}

/// GetTypeForDeclarator - Convert the type for the specified
/// declarator to Type instances. Skip the outermost Skip type
/// objects.
QualType Sema::GetTypeForDeclarator(Declarator &D, Scope *S, unsigned Skip) {
  bool OmittedReturnType = false;

  if (D.getContext() == Declarator::BlockLiteralContext
      && Skip == 0
      && !D.getDeclSpec().hasTypeSpecifier()
      && (D.getNumTypeObjects() == 0
          || (D.getNumTypeObjects() == 1
              && D.getTypeObject(0).Kind == DeclaratorChunk::Function)))
    OmittedReturnType = true;

  // long long is a C99 feature.
  if (!getLangOptions().C99 && !getLangOptions().CPlusPlus0x &&
      D.getDeclSpec().getTypeSpecWidth() == DeclSpec::TSW_longlong)
    Diag(D.getDeclSpec().getTypeSpecWidthLoc(), diag::ext_longlong);

  // Determine the type of the declarator. Not all forms of declarator
  // have a type.
  QualType T;
  switch (D.getKind()) {
  case Declarator::DK_Abstract:
  case Declarator::DK_Normal:
  case Declarator::DK_Operator: {
    const DeclSpec& DS = D.getDeclSpec();
    if (OmittedReturnType)
      // We default to a dependent type initially.  Can be modified by
      // the first return statement.
      T = Context.DependentTy;
    else {
      T = ConvertDeclSpecToType(DS);
      if (T.isNull())
        return T;
    }
    break;
  }

  case Declarator::DK_Constructor:
  case Declarator::DK_Destructor:
  case Declarator::DK_Conversion:
    // Constructors and destructors don't have return types. Use
    // "void" instead. Conversion operators will check their return
    // types separately.
    T = Context.VoidTy;
    break;
  }

  // The name we're declaring, if any.
  DeclarationName Name;
  if (D.getIdentifier())
    Name = D.getIdentifier();

  // Walk the DeclTypeInfo, building the recursive type as we go.
  // DeclTypeInfos are ordered from the identifier out, which is
  // opposite of what we want :).
  for (unsigned i = Skip, e = D.getNumTypeObjects(); i != e; ++i) {
    DeclaratorChunk &DeclType = D.getTypeObject(e-i-1+Skip);
    switch (DeclType.Kind) {
    default: assert(0 && "Unknown decltype!");
    case DeclaratorChunk::BlockPointer:
      // If blocks are disabled, emit an error.
      if (!LangOpts.Blocks)
        Diag(DeclType.Loc, diag::err_blocks_disable);
        
      if (DeclType.Cls.TypeQuals)
        Diag(D.getIdentifierLoc(), diag::err_qualified_block_pointer_type);
      if (!T.getTypePtr()->isFunctionType())
        Diag(D.getIdentifierLoc(), diag::err_nonfunction_block_type);
      else
        T = Context.getBlockPointerType(T);
      break;
    case DeclaratorChunk::Pointer:
      T = BuildPointerType(T, DeclType.Ptr.TypeQuals, DeclType.Loc, Name);
      break;
    case DeclaratorChunk::Reference:
      T = BuildReferenceType(T, DeclType.Ref.LValueRef,
                             DeclType.Ref.HasRestrict ? QualType::Restrict : 0,
                             DeclType.Loc, Name);
      break;
    case DeclaratorChunk::Array: {
      DeclaratorChunk::ArrayTypeInfo &ATI = DeclType.Arr;
      Expr *ArraySize = static_cast<Expr*>(ATI.NumElts);
      ArrayType::ArraySizeModifier ASM;
      if (ATI.isStar)
        ASM = ArrayType::Star;
      else if (ATI.hasStatic)
        ASM = ArrayType::Static;
      else
        ASM = ArrayType::Normal;
      T = BuildArrayType(T, ASM, ArraySize, ATI.TypeQuals, DeclType.Loc, Name);
      break;
    }
    case DeclaratorChunk::Function: {
      // If the function declarator has a prototype (i.e. it is not () and
      // does not have a K&R-style identifier list), then the arguments are part
      // of the type, otherwise the argument list is ().
      const DeclaratorChunk::FunctionTypeInfo &FTI = DeclType.Fun;
      
//.........这里部分代码省略.........

// CUDA 9.0+ uses new way to launch kernels. Parameters are packed in a local
// array and kernels are launched using cudaLaunchKernel().
void CGNVCUDARuntime::emitDeviceStubBodyNew(CodeGenFunction &CGF,
                                            FunctionArgList &Args) {
  // Build the shadow stack entry at the very start of the function.

  // Calculate amount of space we will need for all arguments.  If we have no
  // args, allocate a single pointer so we still have a valid pointer to the
  // argument array that we can pass to runtime, even if it will be unused.
  Address KernelArgs = CGF.CreateTempAlloca(
      VoidPtrTy, CharUnits::fromQuantity(16), "kernel_args",
      llvm::ConstantInt::get(SizeTy, std::max<size_t>(1, Args.size())));
  // Store pointers to the arguments in a locally allocated launch_args.
  for (unsigned i = 0; i < Args.size(); ++i) {
    llvm::Value* VarPtr = CGF.GetAddrOfLocalVar(Args[i]).getPointer();
    llvm::Value *VoidVarPtr = CGF.Builder.CreatePointerCast(VarPtr, VoidPtrTy);
    CGF.Builder.CreateDefaultAlignedStore(
        VoidVarPtr, CGF.Builder.CreateConstGEP1_32(KernelArgs.getPointer(), i));
  }

  llvm::BasicBlock *EndBlock = CGF.createBasicBlock("setup.end");

  // Lookup cudaLaunchKernel function.
  // cudaError_t cudaLaunchKernel(const void *func, dim3 gridDim, dim3 blockDim,
  //                              void **args, size_t sharedMem,
  //                              cudaStream_t stream);
  TranslationUnitDecl *TUDecl = CGM.getContext().getTranslationUnitDecl();
  DeclContext *DC = TranslationUnitDecl::castToDeclContext(TUDecl);
  IdentifierInfo &cudaLaunchKernelII =
      CGM.getContext().Idents.get("cudaLaunchKernel");
  FunctionDecl *cudaLaunchKernelFD = nullptr;
  for (const auto &Result : DC->lookup(&cudaLaunchKernelII)) {
    if (FunctionDecl *FD = dyn_cast<FunctionDecl>(Result))
      cudaLaunchKernelFD = FD;
  }

  if (cudaLaunchKernelFD == nullptr) {
    CGM.Error(CGF.CurFuncDecl->getLocation(),
              "Can't find declaration for cudaLaunchKernel()");
    return;
  }
  // Create temporary dim3 grid_dim, block_dim.
  ParmVarDecl *GridDimParam = cudaLaunchKernelFD->getParamDecl(1);
  QualType Dim3Ty = GridDimParam->getType();
  Address GridDim =
      CGF.CreateMemTemp(Dim3Ty, CharUnits::fromQuantity(8), "grid_dim");
  Address BlockDim =
      CGF.CreateMemTemp(Dim3Ty, CharUnits::fromQuantity(8), "block_dim");
  Address ShmemSize =
      CGF.CreateTempAlloca(SizeTy, CGM.getSizeAlign(), "shmem_size");
  Address Stream =
      CGF.CreateTempAlloca(VoidPtrTy, CGM.getPointerAlign(), "stream");
  llvm::FunctionCallee cudaPopConfigFn = CGM.CreateRuntimeFunction(
      llvm::FunctionType::get(IntTy,
                              {/*gridDim=*/GridDim.getType(),
                               /*blockDim=*/BlockDim.getType(),
                               /*ShmemSize=*/ShmemSize.getType(),
                               /*Stream=*/Stream.getType()},
                              /*isVarArg=*/false),
      "__cudaPopCallConfiguration");

  CGF.EmitRuntimeCallOrInvoke(cudaPopConfigFn,
                              {GridDim.getPointer(), BlockDim.getPointer(),
                               ShmemSize.getPointer(), Stream.getPointer()});

  // Emit the call to cudaLaunch
  llvm::Value *Kernel = CGF.Builder.CreatePointerCast(CGF.CurFn, VoidPtrTy);
  CallArgList LaunchKernelArgs;
  LaunchKernelArgs.add(RValue::get(Kernel),
                       cudaLaunchKernelFD->getParamDecl(0)->getType());
  LaunchKernelArgs.add(RValue::getAggregate(GridDim), Dim3Ty);
  LaunchKernelArgs.add(RValue::getAggregate(BlockDim), Dim3Ty);
  LaunchKernelArgs.add(RValue::get(KernelArgs.getPointer()),
                       cudaLaunchKernelFD->getParamDecl(3)->getType());
  LaunchKernelArgs.add(RValue::get(CGF.Builder.CreateLoad(ShmemSize)),
                       cudaLaunchKernelFD->getParamDecl(4)->getType());
  LaunchKernelArgs.add(RValue::get(CGF.Builder.CreateLoad(Stream)),
                       cudaLaunchKernelFD->getParamDecl(5)->getType());

  QualType QT = cudaLaunchKernelFD->getType();
  QualType CQT = QT.getCanonicalType();
  llvm::Type *Ty = CGM.getTypes().ConvertType(CQT);
  llvm::FunctionType *FTy = dyn_cast<llvm::FunctionType>(Ty);

  const CGFunctionInfo &FI =
      CGM.getTypes().arrangeFunctionDeclaration(cudaLaunchKernelFD);
  llvm::FunctionCallee cudaLaunchKernelFn =
      CGM.CreateRuntimeFunction(FTy, "cudaLaunchKernel");
  CGF.EmitCall(FI, CGCallee::forDirect(cudaLaunchKernelFn), ReturnValueSlot(),
               LaunchKernelArgs);
  CGF.EmitBranch(EndBlock);

  CGF.EmitBlock(EndBlock);
}