1 files changed, 5 insertions, 310 deletions

diff --git a/lib/CodeGen/CGCXX.cpp b/lib/CodeGen/CGCXX.cpp
index b88001c..93a182f 100644
--- a/lib/CodeGen/CGCXX.cpp
+++ b/lib/CodeGen/CGCXX.cpp
@@ -297,311 +297,6 @@ void CodeGenModule::getMangledCXXDtorName(MangleBuffer &Name,
   getMangleContext().mangleCXXDtor(D, Type, Name.getBuffer());
 }
 
-llvm::Constant *
-CodeGenFunction::GenerateThunk(llvm::Function *Fn, GlobalDecl GD,
-                               bool Extern, 
-                               const ThunkAdjustment &ThisAdjustment) {
-  return GenerateCovariantThunk(Fn, GD, Extern,
-                                CovariantThunkAdjustment(ThisAdjustment,
-                                                         ThunkAdjustment()));
-}
-
-llvm::Value *
-CodeGenFunction::DynamicTypeAdjust(llvm::Value *V, 
-                                   const ThunkAdjustment &Adjustment) {
-  const llvm::Type *Int8PtrTy = llvm::Type::getInt8PtrTy(VMContext);
-
-  const llvm::Type *OrigTy = V->getType();
-  if (Adjustment.NonVirtual) {
-    // Do the non-virtual adjustment
-    V = Builder.CreateBitCast(V, Int8PtrTy);
-    V = Builder.CreateConstInBoundsGEP1_64(V, Adjustment.NonVirtual);
-    V = Builder.CreateBitCast(V, OrigTy);
-  }
-  
-  if (!Adjustment.Virtual)
-    return V;
-
-  assert(Adjustment.Virtual % (LLVMPointerWidth / 8) == 0 && 
-         "vtable entry unaligned");
-
-  // Do the virtual this adjustment
-  const llvm::Type *PtrDiffTy = ConvertType(getContext().getPointerDiffType());
-  const llvm::Type *PtrDiffPtrTy = PtrDiffTy->getPointerTo();
-  
-  llvm::Value *ThisVal = Builder.CreateBitCast(V, Int8PtrTy);
-  V = Builder.CreateBitCast(V, PtrDiffPtrTy->getPointerTo());
-  V = Builder.CreateLoad(V, "vtable");
-  
-  llvm::Value *VTablePtr = V;
-  uint64_t VirtualAdjustment = Adjustment.Virtual / (LLVMPointerWidth / 8);
-  V = Builder.CreateConstInBoundsGEP1_64(VTablePtr, VirtualAdjustment);
-  V = Builder.CreateLoad(V);
-  V = Builder.CreateGEP(ThisVal, V);
-  
-  return Builder.CreateBitCast(V, OrigTy);
-}
-
-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);
-      RVOrZero->addIncoming(Z, ZeroBlock);
-      RV = RValue::get(RVOrZero);
-    } else
-      RV = RValue::get(DynamicTypeAdjust(RV.getScalarVal(), 
-                                         Adjustment.ReturnAdjustment));
-  }
-
-  if (!ResultType->isVoidType())
-    EmitReturnOfRValue(RV, ResultType);
-
-  FinishFunction();
-  return Fn;
-}
-
-llvm::Constant *
-CodeGenModule::GetAddrOfThunk(GlobalDecl GD,
-                              const ThunkAdjustment &ThisAdjustment) {
-  const CXXMethodDecl *MD = cast<CXXMethodDecl>(GD.getDecl());
-
-  // Compute mangled name
-  llvm::SmallString<256> OutName;
-  if (const CXXDestructorDecl* DD = dyn_cast<CXXDestructorDecl>(MD))
-    getMangleContext().mangleCXXDtorThunk(DD, GD.getDtorType(), ThisAdjustment,
-                                          OutName);
-  else
-    getMangleContext().mangleThunk(MD, ThisAdjustment, OutName);
-
-  // Get function for mangled name
-  const llvm::Type *Ty = getTypes().GetFunctionTypeForVtable(MD);
-  return GetOrCreateLLVMFunction(OutName, Ty, GlobalDecl());
-}
-
-llvm::Constant *
-CodeGenModule::GetAddrOfCovariantThunk(GlobalDecl GD,
-                                   const CovariantThunkAdjustment &Adjustment) {
-  const CXXMethodDecl *MD = cast<CXXMethodDecl>(GD.getDecl());
-
-  // Compute mangled name
-  llvm::SmallString<256> Name;
-  getMangleContext().mangleCovariantThunk(MD, Adjustment, Name);
-
-  // Get function for mangled name
-  const llvm::Type *Ty = getTypes().GetFunctionTypeForVtable(MD);
-  return GetOrCreateLLVMFunction(Name, Ty, GlobalDecl());
-}
-
-void CodeGenModule::BuildThunksForVirtual(GlobalDecl GD) {
-  CGVtableInfo::AdjustmentVectorTy *AdjPtr = getVtableInfo().getAdjustments(GD);
-  if (!AdjPtr)
-    return;
-  CGVtableInfo::AdjustmentVectorTy &Adj = *AdjPtr;
-  const CXXMethodDecl *MD = cast<CXXMethodDecl>(GD.getDecl());
-  for (unsigned i = 0; i < Adj.size(); i++) {
-    GlobalDecl OGD = Adj[i].first;
-    const CXXMethodDecl *OMD = cast<CXXMethodDecl>(OGD.getDecl());
-    QualType nc_oret = OMD->getType()->getAs<FunctionType>()->getResultType();
-    CanQualType oret = getContext().getCanonicalType(nc_oret);
-    QualType nc_ret = MD->getType()->getAs<FunctionType>()->getResultType();
-    CanQualType ret = getContext().getCanonicalType(nc_ret);
-    ThunkAdjustment ReturnAdjustment;
-    if (oret != ret) {
-      QualType qD = nc_ret->getPointeeType();
-      QualType qB = nc_oret->getPointeeType();
-      CXXRecordDecl *D = cast<CXXRecordDecl>(qD->getAs<RecordType>()->getDecl());
-      CXXRecordDecl *B = cast<CXXRecordDecl>(qB->getAs<RecordType>()->getDecl());
-      ReturnAdjustment = ComputeThunkAdjustment(D, B);
-    }
-    ThunkAdjustment ThisAdjustment = Adj[i].second;
-    bool Extern = !cast<CXXRecordDecl>(OMD->getDeclContext())->isInAnonymousNamespace();
-    if (!ReturnAdjustment.isEmpty() || !ThisAdjustment.isEmpty()) {
-      CovariantThunkAdjustment CoAdj(ThisAdjustment, ReturnAdjustment);
-      llvm::Constant *FnConst;
-      if (!ReturnAdjustment.isEmpty())
-        FnConst = GetAddrOfCovariantThunk(GD, CoAdj);
-      else
-        FnConst = GetAddrOfThunk(GD, ThisAdjustment);
-      if (!isa<llvm::Function>(FnConst)) {
-        llvm::Constant *SubExpr =
-            cast<llvm::ConstantExpr>(FnConst)->getOperand(0);
-        llvm::Function *OldFn = cast<llvm::Function>(SubExpr);
-        llvm::Constant *NewFnConst;
-        if (!ReturnAdjustment.isEmpty())
-          NewFnConst = GetAddrOfCovariantThunk(GD, CoAdj);
-        else
-          NewFnConst = GetAddrOfThunk(GD, ThisAdjustment);
-        llvm::Function *NewFn = cast<llvm::Function>(NewFnConst);
-        NewFn->takeName(OldFn);
-        llvm::Constant *NewPtrForOldDecl =
-            llvm::ConstantExpr::getBitCast(NewFn, OldFn->getType());
-        OldFn->replaceAllUsesWith(NewPtrForOldDecl);
-        OldFn->eraseFromParent();
-        FnConst = NewFn;
-      }
-      llvm::Function *Fn = cast<llvm::Function>(FnConst);
-      if (Fn->isDeclaration()) {
-        llvm::GlobalVariable::LinkageTypes linktype;
-        linktype = llvm::GlobalValue::WeakAnyLinkage;
-        if (!Extern)
-          linktype = llvm::GlobalValue::InternalLinkage;
-        Fn->setLinkage(linktype);
-        if (!Features.Exceptions && !Features.ObjCNonFragileABI)
-          Fn->addFnAttr(llvm::Attribute::NoUnwind);
-        Fn->setAlignment(2);
-        CodeGenFunction(*this).GenerateCovariantThunk(Fn, GD, Extern, CoAdj);
-      }
-    }
-  }
-}
-
-llvm::Constant *
-CodeGenModule::BuildThunk(GlobalDecl GD, bool Extern,
-                          const ThunkAdjustment &ThisAdjustment) {
-  const CXXMethodDecl *MD = cast<CXXMethodDecl>(GD.getDecl());
-  llvm::SmallString<256> OutName;
-  if (const CXXDestructorDecl *D = dyn_cast<CXXDestructorDecl>(MD)) {
-    getMangleContext().mangleCXXDtorThunk(D, GD.getDtorType(), ThisAdjustment,
-                                          OutName);
-  } else 
-    getMangleContext().mangleThunk(MD, ThisAdjustment, OutName);
-  
-  llvm::GlobalVariable::LinkageTypes linktype;
-  linktype = llvm::GlobalValue::WeakAnyLinkage;
-  if (!Extern)
-    linktype = llvm::GlobalValue::InternalLinkage;
-  llvm::Type *Ptr8Ty=llvm::PointerType::get(llvm::Type::getInt8Ty(VMContext),0);
-  const FunctionProtoType *FPT = MD->getType()->getAs<FunctionProtoType>();
-  const llvm::FunctionType *FTy =
-    getTypes().GetFunctionType(getTypes().getFunctionInfo(MD),
-                               FPT->isVariadic());
-
-  llvm::Function *Fn = llvm::Function::Create(FTy, linktype, OutName.str(),
-                                              &getModule());
-  CodeGenFunction(*this).GenerateThunk(Fn, GD, Extern, ThisAdjustment);
-  llvm::Constant *m = llvm::ConstantExpr::getBitCast(Fn, Ptr8Ty);
-  return m;
-}
-
-llvm::Constant *
-CodeGenModule::BuildCovariantThunk(const GlobalDecl &GD, bool Extern,
-                                   const CovariantThunkAdjustment &Adjustment) {
-  const CXXMethodDecl *MD = cast<CXXMethodDecl>(GD.getDecl());
-  llvm::SmallString<256> OutName;
-  getMangleContext().mangleCovariantThunk(MD, Adjustment, OutName);
-  llvm::GlobalVariable::LinkageTypes linktype;
-  linktype = llvm::GlobalValue::WeakAnyLinkage;
-  if (!Extern)
-    linktype = llvm::GlobalValue::InternalLinkage;
-  llvm::Type *Ptr8Ty=llvm::PointerType::get(llvm::Type::getInt8Ty(VMContext),0);
-  const FunctionProtoType *FPT = MD->getType()->getAs<FunctionProtoType>();
-  const llvm::FunctionType *FTy =
-    getTypes().GetFunctionType(getTypes().getFunctionInfo(MD),
-                               FPT->isVariadic());
-
-  llvm::Function *Fn = llvm::Function::Create(FTy, linktype, OutName.str(),
-                                              &getModule());
-  CodeGenFunction(*this).GenerateCovariantThunk(Fn, MD, Extern, Adjustment);
-  llvm::Constant *m = llvm::ConstantExpr::getBitCast(Fn, Ptr8Ty);
-  return m;
-}
-
 static llvm::Value *BuildVirtualCall(CodeGenFunction &CGF, uint64_t VtableIndex, 
                                      llvm::Value *This, const llvm::Type *Ty) {
   Ty = Ty->getPointerTo()->getPointerTo()->getPointerTo();
@@ -618,17 +313,17 @@ llvm::Value *
 CodeGenFunction::BuildVirtualCall(const CXXMethodDecl *MD, llvm::Value *This,
                                   const llvm::Type *Ty) {
   MD = MD->getCanonicalDecl();
-  uint64_t VtableIndex = CGM.getVtableInfo().getMethodVtableIndex(MD);
+  uint64_t VTableIndex = CGM.getVTables().getMethodVtableIndex(MD);
   
-  return ::BuildVirtualCall(*this, VtableIndex, This, Ty);
+  return ::BuildVirtualCall(*this, VTableIndex, This, Ty);
 }
 
 llvm::Value *
 CodeGenFunction::BuildVirtualCall(const CXXDestructorDecl *DD, CXXDtorType Type, 
                                   llvm::Value *&This, const llvm::Type *Ty) {
   DD = cast<CXXDestructorDecl>(DD->getCanonicalDecl());
-  uint64_t VtableIndex = 
-    CGM.getVtableInfo().getMethodVtableIndex(GlobalDecl(DD, Type));
+  uint64_t VTableIndex = 
+    CGM.getVTables().getMethodVtableIndex(GlobalDecl(DD, Type));
 
-  return ::BuildVirtualCall(*this, VtableIndex, This, Ty);
+  return ::BuildVirtualCall(*this, VTableIndex, This, Ty);
 }