42 class RSX86_64CallConvPass: public llvm::ModulePass {
44   bool IsRSFunctionOfInterest(llvm::Function &F) {  in IsRSFunctionOfInterest()
50     llvm::StringRef FName = F.getName();  in IsRSFunctionOfInterest()
60   bool IsDerefNeeded(llvm::Function *F, llvm::Argument &Arg) {  in IsDerefNeeded()
62     llvm::Type *ArgTy = Arg.getType();  in IsDerefNeeded()
74     llvm::Type *StructTy = ArgTy->getPointerElementType();  in IsDerefNeeded()
79     llvm::StringRef FName = F->getName();  in IsDerefNeeded()
94   bool FillArgsToDeref(llvm::Function *F, std::vector<unsigned> &ArgNums) {  in FillArgsToDeref()
110   llvm::Function *RedefineFn(llvm::Function *OrigFn,  in RedefineFn()
113     llvm::FunctionType *FTy = OrigFn->getFunctionType();  in RedefineFn()
114     std::vector<llvm::Type *> Params(FTy->param_begin(), FTy->param_end());  in RedefineFn()
116     llvm::FunctionType *NewTy = llvm::FunctionType::get(FTy->getReturnType(),  in RedefineFn()
119     llvm::Function *NewFn = llvm::Function::Create(NewTy,  in RedefineFn()
128       NewFn->addAttribute(i+1, llvm::Attribute::ByVal);  in RedefineFn()
143   void ReplaceCallInsn(llvm::CallSite &CS,  in ReplaceCallInsn()
144                        llvm::Function *NewFn,  in ReplaceCallInsn()
147     llvm::CallInst *CI = llvm::cast<llvm::CallInst>(CS.getInstruction());  in ReplaceCallInsn()
148     std::vector<llvm::Value *> Args(CS.arg_begin(), CS.arg_end());  in ReplaceCallInsn()
149     auto NewCI = llvm::CallInst::Create(NewFn, Args, "", CI);  in ReplaceCallInsn()
155       NewCI->addAttribute(i+1, llvm::Attribute::ByVal);  in ReplaceCallInsn()
173   virtual void getAnalysisUsage(llvm::AnalysisUsage &AU) const override {  in getAnalysisUsage()
178   bool runOnModule(llvm::Module &M) override {  in runOnModule()
181     std::vector<llvm::Function *> FunctionsToHandle;  in runOnModule()
196       llvm::Function *NewFn = RedefineFn(OrigFn, ArgsToDeref);  in runOnModule()
198         llvm::CallSite CS(OrigFn->user_back());  in runOnModule()
213 static llvm::RegisterPass<RSX86_64CallConvPass> X("X86-64-calling-conv",
218 llvm::ModulePass *