4982 struct VarArgSystemZHelper : public VarArgHelper {  struct
4983   static const unsigned SystemZGpOffset = 16;
4984   static const unsigned SystemZGpEndOffset = 56;
4985   static const unsigned SystemZFpOffset = 128;
4986   static const unsigned SystemZFpEndOffset = 160;
4987   static const unsigned SystemZMaxVrArgs = 8;
4988   static const unsigned SystemZRegSaveAreaSize = 160;
4989   static const unsigned SystemZOverflowOffset = 160;
4990   static const unsigned SystemZVAListTagSize = 32;
4991   static const unsigned SystemZOverflowArgAreaPtrOffset = 16;
4992   static const unsigned SystemZRegSaveAreaPtrOffset = 24;
4994   Function &F;
4995   MemorySanitizer &MS;
4996   MemorySanitizerVisitor &MSV;
4997   Value *VAArgTLSCopy = nullptr;
4998   Value *VAArgTLSOriginCopy = nullptr;
4999   Value *VAArgOverflowSize = nullptr;
5001   SmallVector<CallInst *, 16> VAStartInstrumentationList;
5003   enum class ArgKind {
5011   enum class ShadowExtension { None, Zero, Sign };
5013   VarArgSystemZHelper(Function &F, MemorySanitizer &MS,  in VarArgSystemZHelper()  argument
5017   ArgKind classifyArgument(Type *T, bool IsSoftFloatABI) {  in classifyArgument()
5035   ShadowExtension getShadowExtension(const CallBase &CB, unsigned ArgNo) {  in getShadowExtension()
5054   void visitCallBase(CallBase &CB, IRBuilder<> &IRB) override {  in visitCallBase()
5181   Value *getShadowAddrForVAArgument(IRBuilder<> &IRB, unsigned ArgOffset) {  in getShadowAddrForVAArgument()
5186   Value *getOriginPtrForVAArgument(IRBuilder<> &IRB, int ArgOffset) {  in getOriginPtrForVAArgument()
5193   void unpoisonVAListTagForInst(IntrinsicInst &I) {  in unpoisonVAListTagForInst()
5205   void visitVAStartInst(VAStartInst &I) override {  in visitVAStartInst()
5210   void visitVACopyInst(VACopyInst &I) override { unpoisonVAListTagForInst(I); }  in visitVACopyInst()
5212   void copyRegSaveArea(IRBuilder<> &IRB, Value *VAListTag) {  in copyRegSaveArea()
5233   void copyOverflowArea(IRBuilder<> &IRB, Value *VAListTag) {  in copyOverflowArea()
5259   void finalizeInstrumentation() override {  in finalizeInstrumentation()