C++ const_arg_iterator::getType方法代码示例

bool TriCoreCallingConvHook::isRegVali64Type (MachineFunction& _mf) {
	Function::const_arg_iterator FI;
	FI = _mf.getFunction()->arg_begin();
	std::advance(FI,curArg);
	outs() << "size: " << FI->getType()->getScalarSizeInBits() << "\n";
	return (FI->getType()->getScalarSizeInBits() == 64) ? true : false;
}

/// CloneFunction - Return a copy of the specified function, but without
/// embedding the function into another module.  Also, any references specified
/// in the VMap are changed to refer to their mapped value instead of the
/// original one.  If any of the arguments to the function are in the VMap,
/// the arguments are deleted from the resultant function.  The VMap is
/// updated to include mappings from all of the instructions and basicblocks in
/// the function from their old to new values.
///
Function *llvm::CloneFunction(const Function *F, ValueToValueMapTy &VMap,
                              bool ModuleLevelChanges,
                              ClonedCodeInfo *CodeInfo) {
  std::vector<Type*> ArgTypes;

  // The user might be deleting arguments to the function by specifying them in
  // the VMap.  If so, we need to not add the arguments to the arg ty vector
  //
  for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end();
       I != E; ++I)
    if (VMap.count(I) == 0)  // Haven't mapped the argument to anything yet?
      ArgTypes.push_back(I->getType());

  // Create a new function type...
  FunctionType *FTy = FunctionType::get(F->getFunctionType()->getReturnType(),
                                    ArgTypes, F->getFunctionType()->isVarArg());

  // Create the new function...
  Function *NewF = Function::Create(FTy, F->getLinkage(), F->getName());

  // Loop over the arguments, copying the names of the mapped arguments over...
  Function::arg_iterator DestI = NewF->arg_begin();
  for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end();
       I != E; ++I)
    if (VMap.count(I) == 0) {   // Is this argument preserved?
      DestI->setName(I->getName()); // Copy the name over...
      VMap[I] = DestI++;        // Add mapping to VMap
    }

  SmallVector<ReturnInst*, 8> Returns;  // Ignore returns cloned.
  CloneFunctionInto(NewF, F, VMap, ModuleLevelChanges, Returns, "", CodeInfo);
  return NewF;
}

static X86MachineFunctionInfo calculateFunctionInfo(const Function *F,
                                                    const TargetData *TD) {
  X86MachineFunctionInfo Info;
  uint64_t Size = 0;

  switch (F->getCallingConv()) {
  case CallingConv::X86_StdCall:
    Info.setDecorationStyle(StdCall);
    break;
  case CallingConv::X86_FastCall:
    Info.setDecorationStyle(FastCall);
    break;
  default:
    return Info;
  }

  unsigned argNum = 1;
  for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
       AI != AE; ++AI, ++argNum) {
    const Type* Ty = AI->getType();

    // 'Dereference' type in case of byval parameter attribute
    if (F->paramHasAttr(argNum, Attribute::ByVal))
      Ty = cast<PointerType>(Ty)->getElementType();

    // Size should be aligned to DWORD boundary
    Size += ((TD->getTypePaddedSize(Ty) + 3)/4)*4;
  }

  // We're not supporting tooooo huge arguments :)
  Info.setBytesToPopOnReturn((unsigned int)Size);
  return Info;
}

void Andersen::collectConstraintsForGlobals(Module& M)
{
	// Create a pointer and an object for each global variable
	for (auto const& globalVal: M.globals())
	{
		NodeIndex gVal = nodeFactory.createValueNode(&globalVal);
		NodeIndex gObj = nodeFactory.createObjectNode(&globalVal);
		constraints.emplace_back(AndersConstraint::ADDR_OF, gVal, gObj);
	}

	// Functions and function pointers are also considered global
	for (auto const& f: M)
	{
		// If f is an addr-taken function, create a pointer and an object for it
		if (f.hasAddressTaken())
		{
			NodeIndex fVal = nodeFactory.createValueNode(&f);
			NodeIndex fObj = nodeFactory.createObjectNode(&f);
			constraints.emplace_back(AndersConstraint::ADDR_OF, fVal, fObj);
		}

		if (f.isDeclaration() || f.isIntrinsic())
			continue;

		// Create return node
		if (f.getFunctionType()->getReturnType()->isPointerTy())
		{
			nodeFactory.createReturnNode(&f);
		}

		// Create vararg node
		if (f.getFunctionType()->isVarArg())
			nodeFactory.createVarargNode(&f);

		// Add nodes for all formal arguments.
		for (Function::const_arg_iterator itr = f.arg_begin(), ite = f.arg_end(); itr != ite; ++itr)
		{
			if (isa<PointerType>(itr->getType()))
				nodeFactory.createValueNode(itr);
		}
	}

	// Init globals here since an initializer may refer to a global var/func below it
	for (auto const& globalVal: M.globals())
	{
		NodeIndex gObj = nodeFactory.getObjectNodeFor(&globalVal);
		assert(gObj != AndersNodeFactory::InvalidIndex && "Cannot find global object!");

		if (globalVal.hasDefinitiveInitializer())
		{
			addGlobalInitializerConstraints(gObj, globalVal.getInitializer());
		}
		else
		{
			// If it doesn't have an initializer (i.e. it's defined in another translation unit), it points to the universal set.
			constraints.emplace_back(AndersConstraint::COPY,
				gObj, nodeFactory.getUniversalObjNode());
		}
	}
}

const Type* getArgumentType(const Function* f, const unsigned arg_index) {
    assert (f);
    assert (arg_index < f->arg_size());
    Function::const_arg_iterator A = f->arg_begin();
    for (unsigned i=0; i<arg_index; ++i) ++A; //is there a better way? :P
    return A->getType();
}

  std::vector<Type*> lowerJuliaArrayArguments(Function *OldFunc) {

    Module* M = OldFunc->getParent();
    LLVMContext &context = M->getContext();
    NamedMDNode* JuliaArgs = M->getOrInsertNamedMetadata("julia.args");
    MDNode *node = JuliaArgs->getOperand(0);

    int operand = 0;
    std::vector<Type*> ArgTypes;
    
    for (Function::const_arg_iterator I = OldFunc->arg_begin(), E = OldFunc->arg_end(); I != E; ++I) { 

      Type* argType = I->getType();
      if (is_jl_array_type(argType)) {
        
        // Gets the type from custom metadata
        Value *value = node->getOperand(operand);
        if (MDString* mdstring = dyn_cast<MDString>(value)) {

          if (Type* type = extractType(context, mdstring->getString())) {
            ArgTypes.push_back(type);            
          } else {
            errs() << "Could not extract type: ";
            mdstring->print(errs());
            errs() << "\n";
            exit(1);
          }
        } else {
          errs() << "Could not extract type: ";
          value->print(errs());
          errs() << "\n";
          exit(1);
        }
        
        
      } else {
        ArgTypes.push_back(I->getType());
      }
      operand++;
    }

    return ArgTypes;
    
  }

void  ProgramCFG::setFuncVariable(const Function *F,string func, CFG* cfg, bool initial){
	for (Function::const_arg_iterator it = F->arg_begin(), E = F->arg_end();it != E; ++it) {
		Type *Ty = it->getType();
		if(initial){
			string varNum = it->getName();
			string varName = func+"_"+varNum;
			
			if(Ty->isPointerTy()){
				Type *ETy = Ty->getPointerElementType();
				int ID = cfg->counter_variable++;
				Variable var(varName, ID, PTR);
				cfg->variableList.push_back(var);
				
				InstParser::setVariable(cfg, NULL, ETy, varName, true);
				
			}
			else{
                VarType type;
                if(Ty->isIntegerTy())
                    type = INT;
                else if(Ty->isFloatingPointTy())
                    type = FP;
                else
                    errs()<<"0:programCFG.type error\n";
				int ID = cfg->counter_variable++;
				Variable var(varName, ID, type);
				cfg->variableList.push_back(var);
				cfg->mainInput.push_back(ID);
			}
		}
		else{
			int ID = cfg->counter_variable++;
			string varNum = it->getName();
			string varName = func+"_"+varNum;
			
            VarType type;
			if(Ty->isPointerTy())
				type = PTR;
			else if(Ty->isIntegerTy())
                type = INT;
            else if(Ty->isFloatingPointTy())
                type = FP;
            else
                errs()<<"1:programCFG.type error\n";

			if(!cfg->hasVariable(varName)){
				Variable var(varName, ID, type);
				cfg->variableList.push_back(var);
			}
			else
				errs()<<"1:setFuncVariable error 10086!!\t"<<varName<<"\n";
		}
	}
}

bool AArch64CallLowering::LowerFormalArguments(
    MachineIRBuilder &MIRBuilder, const Function::ArgumentListType &Args,
    const SmallVectorImpl<unsigned> &VRegs) const {
  if (!EMIT_IMPLEMENTATION)
    return false;

  MachineFunction &MF = MIRBuilder.getMF();
  const Function &F = *MF.getFunction();

  SmallVector<CCValAssign, 16> ArgLocs;
  CCState CCInfo(F.getCallingConv(), F.isVarArg(), MF, ArgLocs, F.getContext());

  unsigned NumArgs = Args.size();
  Function::const_arg_iterator CurOrigArg = Args.begin();
  const AArch64TargetLowering &TLI = *getTLI<AArch64TargetLowering>();
  for (unsigned i = 0; i != NumArgs; ++i, ++CurOrigArg) {
    MVT ValVT = MVT::getVT(CurOrigArg->getType());
    CCAssignFn *AssignFn =
        TLI.CCAssignFnForCall(F.getCallingConv(), /*IsVarArg=*/false);
    bool Res =
        AssignFn(i, ValVT, ValVT, CCValAssign::Full, ISD::ArgFlagsTy(), CCInfo);
    assert(!Res && "Call operand has unhandled type");
    (void)Res;
  }
  assert(ArgLocs.size() == Args.size() &&
         "We have a different number of location and args?!");
  for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
    CCValAssign &VA = ArgLocs[i];

    assert(VA.isRegLoc() && "Not yet implemented");
    // Transform the arguments in physical registers into virtual ones.
    MIRBuilder.getMBB().addLiveIn(VA.getLocReg());
    MIRBuilder.buildInstr(TargetOpcode::COPY, VRegs[i], VA.getLocReg());

    switch (VA.getLocInfo()) {
    default:
      llvm_unreachable("Unknown loc info!");
    case CCValAssign::Full:
      break;
    case CCValAssign::BCvt:
      // We don't care about bitcast.
      break;
    case CCValAssign::AExt:
    case CCValAssign::SExt:
    case CCValAssign::ZExt:
      // Zero/Sign extend the register.
      assert(0 && "Not yet implemented");
      break;
    }
  }
  return true;
}

/// Identify lowered values that originated from f128 arguments and record
/// this.
void MipsCCState::PreAnalyzeFormalArgumentsForF128(
    const SmallVectorImpl<ISD::InputArg> &Ins) {
  const MachineFunction &MF = getMachineFunction();
  for (unsigned i = 0; i < Ins.size(); ++i) {
    Function::const_arg_iterator FuncArg = MF.getFunction()->arg_begin();

    // SRet arguments cannot originate from f128 or {f128} returns so we just
    // push false. We have to handle this specially since SRet arguments
    // aren't mapped to an original argument.
    if (Ins[i].Flags.isSRet()) {
      OriginalArgWasF128.push_back(false);
      OriginalArgWasFloat.push_back(false);
      continue;
    }

    assert(Ins[i].getOrigArgIndex() < MF.getFunction()->arg_size());
    std::advance(FuncArg, Ins[i].getOrigArgIndex());

    OriginalArgWasF128.push_back(
        originalTypeIsF128(FuncArg->getType(), nullptr));
    OriginalArgWasFloat.push_back(FuncArg->getType()->isFloatingPointTy());
  }
}

/// AddFastCallStdCallSuffix - Microsoft fastcall and stdcall functions require
/// a suffix on their name indicating the number of words of arguments they
/// take.
static void AddFastCallStdCallSuffix(SmallVectorImpl<char> &OutName,
                                     const Function *F, const DataLayout &TD) {
  // Calculate arguments size total.
  unsigned ArgWords = 0;
  for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
       AI != AE; ++AI) {
    Type *Ty = AI->getType();
    // 'Dereference' type in case of byval parameter attribute
    if (AI->hasByValAttr())
      Ty = cast<PointerType>(Ty)->getElementType();
    // Size should be aligned to DWORD boundary
    ArgWords += ((TD.getTypeAllocSize(Ty) + 3)/4)*4;
  }
  
  raw_svector_ostream(OutName) << '@' << ArgWords;
}

void PIC16AsmPrinter::EmitFunctionFrame(MachineFunction &MF) {
  const Function *F = MF.getFunction();
  const TargetData *TD = TM.getTargetData();
  // Emit the data section name.
  O << "\n"; 
  
  PIC16Section *fPDataSection =
    const_cast<PIC16Section *>(getObjFileLowering().
                                SectionForFrame(CurrentFnSym->getName()));
 
  fPDataSection->setColor(getFunctionColor(F)); 
  OutStreamer.SwitchSection(fPDataSection);
  
  // Emit function frame label
  O << PAN::getFrameLabel(CurrentFnSym->getName()) << ":\n";

  const Type *RetType = F->getReturnType();
  unsigned RetSize = 0; 
  if (RetType->getTypeID() != Type::VoidTyID) 
    RetSize = TD->getTypeAllocSize(RetType);
  
  //Emit function return value space
  // FIXME: Do not emit RetvalLable when retsize is zero. To do this
  // we will need to avoid printing a global directive for Retval label
  // in emitExternandGloblas.
  if(RetSize > 0)
     O << PAN::getRetvalLabel(CurrentFnSym->getName())
       << " RES " << RetSize << "\n";
  else
     O << PAN::getRetvalLabel(CurrentFnSym->getName()) << ": \n";
   
  // Emit variable to hold the space for function arguments 
  unsigned ArgSize = 0;
  for (Function::const_arg_iterator argi = F->arg_begin(),
           arge = F->arg_end(); argi != arge ; ++argi) {
    const Type *Ty = argi->getType();
    ArgSize += TD->getTypeAllocSize(Ty);
   }

  O << PAN::getArgsLabel(CurrentFnSym->getName()) << " RES " << ArgSize << "\n";

  // Emit temporary space
  int TempSize = PTLI->GetTmpSize();
  if (TempSize > 0)
    O << PAN::getTempdataLabel(CurrentFnSym->getName()) << " RES  "
      << TempSize << '\n';
}

/// Microsoft fastcall and stdcall functions require a suffix on their name
/// indicating the number of words of arguments they take.
static void addByteCountSuffix(raw_ostream &OS, const Function *F,
                               const DataLayout &DL) {
  // Calculate arguments size total.
  unsigned ArgWords = 0;
  for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
       AI != AE; ++AI) {
    Type *Ty = AI->getType();
    // 'Dereference' type in case of byval or inalloca parameter attribute.
    if (AI->hasByValOrInAllocaAttr())
      Ty = cast<PointerType>(Ty)->getElementType();
    // Size should be aligned to pointer size.
    unsigned PtrSize = DL.getPointerSize();
    ArgWords += RoundUpToAlignment(DL.getTypeAllocSize(Ty), PtrSize);
  }

  OS << '@' << ArgWords;
}

void PIC16AsmPrinter::EmitFunctionFrame(MachineFunction &MF) {
  const Function *F = MF.getFunction();
  std::string FuncName = Mang->getValueName(F);
  const TargetData *TD = TM.getTargetData();
  // Emit the data section name.
  O << "\n"; 
  const char *SectionName = PAN::getFrameSectionName(CurrentFnName).c_str();

  const Section *fPDataSection = TAI->getNamedSection(SectionName,
                                                      SectionFlags::Writeable);
  SwitchToSection(fPDataSection);
  
  // Emit function frame label
  O << PAN::getFrameLabel(CurrentFnName) << ":\n";

  const Type *RetType = F->getReturnType();
  unsigned RetSize = 0; 
  if (RetType->getTypeID() != Type::VoidTyID) 
    RetSize = TD->getTypeAllocSize(RetType);
  
  //Emit function return value space
  // FIXME: Do not emit RetvalLable when retsize is zero. To do this
  // we will need to avoid printing a global directive for Retval label
  // in emitExternandGloblas.
  if(RetSize > 0)
     O << PAN::getRetvalLabel(CurrentFnName) << " RES " << RetSize << "\n";
  else
     O << PAN::getRetvalLabel(CurrentFnName) << ": \n";
   
  // Emit variable to hold the space for function arguments 
  unsigned ArgSize = 0;
  for (Function::const_arg_iterator argi = F->arg_begin(),
           arge = F->arg_end(); argi != arge ; ++argi) {
    const Type *Ty = argi->getType();
    ArgSize += TD->getTypeAllocSize(Ty);
   }

  O << PAN::getArgsLabel(CurrentFnName) << " RES " << ArgSize << "\n";

  // Emit temporary space
  int TempSize = PTLI->GetTmpSize();
  if (TempSize > 0 )
    O << PAN::getTempdataLabel(CurrentFnName) << " RES  " << TempSize <<"\n";
}

/// NaClValueEnumerator - Enumerate module-level information.
NaClValueEnumerator::NaClValueEnumerator(const Module *M) {
  // Create map for counting frequency of types, and set field
  // TypeCountMap accordingly.  Note: Pointer field TypeCountMap is
  // used to deal with the fact that types are added through various
  // method calls in this routine. Rather than pass it as an argument,
  // we use a field. The field is a pointer so that the memory
  // footprint of count_map can be garbage collected when this
  // constructor completes.
  TypeCountMapType count_map;
  TypeCountMap = &count_map;

  IntPtrType = IntegerType::get(M->getContext(), PNaClIntPtrTypeBitSize);

  // Enumerate the functions. Note: We do this before global
  // variables, so that global variable initializations can refer to
  // the functions without a forward reference.
  for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) {
    EnumerateValue(I);
  }

  // Enumerate the global variables.
  FirstGlobalVarID = Values.size();
  for (Module::const_global_iterator I = M->global_begin(),
         E = M->global_end(); I != E; ++I)
    EnumerateValue(I);
  NumGlobalVarIDs = Values.size() - FirstGlobalVarID;

  // Enumerate the aliases.
  for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end();
       I != E; ++I)
    EnumerateValue(I);

  // Remember what is the cutoff between globalvalue's and other constants.
  unsigned FirstConstant = Values.size();

  // Skip global variable initializers since they are handled within
  // WriteGlobalVars of file NaClBitcodeWriter.cpp.

  // Enumerate the aliasees.
  for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end();
       I != E; ++I)
    EnumerateValue(I->getAliasee());

  // Insert constants that are named at module level into the slot
  // pool so that the module symbol table can refer to them...
  EnumerateValueSymbolTable(M->getValueSymbolTable());

  // Enumerate types used by function bodies and argument lists.
  for (Module::const_iterator F = M->begin(), E = M->end(); F != E; ++F) {

    for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end();
         I != E; ++I)
      EnumerateType(I->getType());

    for (Function::const_iterator BB = F->begin(), E = F->end(); BB != E; ++BB)
      for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;++I){
        // Don't generate types for elided pointer casts!
        if (IsElidedCast(I))
          continue;

        if (const SwitchInst *SI = dyn_cast<SwitchInst>(I)) {
          // Handle switch instruction specially, so that we don't
          // write out unnecessary vector/array types used to model case
          // selectors.
          EnumerateOperandType(SI->getCondition());
        } else {
          for (User::const_op_iterator OI = I->op_begin(), E = I->op_end();
               OI != E; ++OI) {
            EnumerateOperandType(*OI);
          }
        }
        EnumerateType(I->getType());
      }
  }

  // Optimized type indicies to put "common" expected types in with small
  // indices.
  OptimizeTypes(M);
  TypeCountMap = NULL;

  // Optimize constant ordering.
  OptimizeConstants(FirstConstant, Values.size());
}

// InlineFunction - This function inlines the called function into the basic
// block of the caller.  This returns false if it is not possible to inline this
// call.  The program is still in a well defined state if this occurs though.
//
// Note that this only does one level of inlining.  For example, if the
// instruction 'call B' is inlined, and 'B' calls 'C', then the call to 'C' now
// exists in the instruction stream.  Similiarly this will inline a recursive
// function by one level.
//
bool llvm::InlineFunction(CallSite CS, CallGraph *CG, const TargetData *TD) {
  Instruction *TheCall = CS.getInstruction();
  assert(TheCall->getParent() && TheCall->getParent()->getParent() &&
         "Instruction not in function!");

  const Function *CalledFunc = CS.getCalledFunction();
  if (CalledFunc == 0 ||          // Can't inline external function or indirect
      CalledFunc->isDeclaration() || // call, or call to a vararg function!
      CalledFunc->getFunctionType()->isVarArg()) return false;


  // If the call to the callee is not a tail call, we must clear the 'tail'
  // flags on any calls that we inline.
  bool MustClearTailCallFlags =
    !(isa<CallInst>(TheCall) && cast<CallInst>(TheCall)->isTailCall());

  // If the call to the callee cannot throw, set the 'nounwind' flag on any
  // calls that we inline.
  bool MarkNoUnwind = CS.doesNotThrow();

  BasicBlock *OrigBB = TheCall->getParent();
  Function *Caller = OrigBB->getParent();

  // GC poses two hazards to inlining, which only occur when the callee has GC:
  //  1. If the caller has no GC, then the callee's GC must be propagated to the
  //     caller.
  //  2. If the caller has a differing GC, it is invalid to inline.
  if (CalledFunc->hasGC()) {
    if (!Caller->hasGC())
      Caller->setGC(CalledFunc->getGC());
    else if (CalledFunc->getGC() != Caller->getGC())
      return false;
  }

  // Get an iterator to the last basic block in the function, which will have
  // the new function inlined after it.
  //
  Function::iterator LastBlock = &Caller->back();

  // Make sure to capture all of the return instructions from the cloned
  // function.
  std::vector<ReturnInst*> Returns;
  ClonedCodeInfo InlinedFunctionInfo;
  Function::iterator FirstNewBlock;

  { // Scope to destroy ValueMap after cloning.
    DenseMap<const Value*, Value*> ValueMap;

    assert(CalledFunc->arg_size() == CS.arg_size() &&
           "No varargs calls can be inlined!");

    // Calculate the vector of arguments to pass into the function cloner, which
    // matches up the formal to the actual argument values.
    CallSite::arg_iterator AI = CS.arg_begin();
    unsigned ArgNo = 0;
    for (Function::const_arg_iterator I = CalledFunc->arg_begin(),
         E = CalledFunc->arg_end(); I != E; ++I, ++AI, ++ArgNo) {
      Value *ActualArg = *AI;

      // When byval arguments actually inlined, we need to make the copy implied
      // by them explicit.  However, we don't do this if the callee is readonly
      // or readnone, because the copy would be unneeded: the callee doesn't
      // modify the struct.
      if (CalledFunc->paramHasAttr(ArgNo+1, Attribute::ByVal) &&
          !CalledFunc->onlyReadsMemory()) {
        const Type *AggTy = cast<PointerType>(I->getType())->getElementType();
        const Type *VoidPtrTy = PointerType::getUnqual(Type::Int8Ty);

        // Create the alloca.  If we have TargetData, use nice alignment.
        unsigned Align = 1;
        if (TD) Align = TD->getPrefTypeAlignment(AggTy);
        Value *NewAlloca = new AllocaInst(AggTy, 0, Align, I->getName(),
                                          Caller->begin()->begin());
        // Emit a memcpy.
        const Type *Tys[] = { Type::Int64Ty };
        Function *MemCpyFn = Intrinsic::getDeclaration(Caller->getParent(),
                                                       Intrinsic::memcpy, 
                                                       Tys, 1);
        Value *DestCast = new BitCastInst(NewAlloca, VoidPtrTy, "tmp", TheCall);
        Value *SrcCast = new BitCastInst(*AI, VoidPtrTy, "tmp", TheCall);

        Value *Size;
        if (TD == 0)
          Size = ConstantExpr::getSizeOf(AggTy);
        else
          Size = ConstantInt::get(Type::Int64Ty, TD->getTypeStoreSize(AggTy));

        // Always generate a memcpy of alignment 1 here because we don't know
        // the alignment of the src pointer.  Other optimizations can infer
        // better alignment.
        Value *CallArgs[] = {
//.........这里部分代码省略.........