Add CGCXXClass.cpp. and move CodeGenFunction::AddressCXXOfBaseClass there.

llvm-svn: 81604

1 files changed, 0 insertions, 67 deletions

diff --git a/clang/lib/CodeGen/CGCXX.cpp b/clang/lib/CodeGen/CGCXX.cpp
index 7def3c78347..c3c40443b84 100644
--- a/clang/lib/CodeGen/CGCXX.cpp
+++ b/clang/lib/CodeGen/CGCXX.cpp
@@ -276,73 +276,6 @@ llvm::Value *CodeGenFunction::LoadCXXThis() {
   return Builder.CreateLoad(LocalDeclMap[CXXThisDecl], "this");
 }
 
-static bool
-GetNestedPaths(llvm::SmallVectorImpl<const CXXRecordDecl *> &NestedBasePaths,
-               const CXXRecordDecl *ClassDecl,
-               const CXXRecordDecl *BaseClassDecl) {
-  for (CXXRecordDecl::base_class_const_iterator i = ClassDecl->bases_begin(),
-      e = ClassDecl->bases_end(); i != e; ++i) {
-    if (i->isVirtual())
-      continue;
-    const CXXRecordDecl *Base =
-      cast<CXXRecordDecl>(i->getType()->getAs<RecordType>()->getDecl());
-    if (Base == BaseClassDecl) {
-      NestedBasePaths.push_back(BaseClassDecl);
-      return true;
-    }
-  }
-  // BaseClassDecl not an immediate base of ClassDecl.
-  for (CXXRecordDecl::base_class_const_iterator i = ClassDecl->bases_begin(),
-       e = ClassDecl->bases_end(); i != e; ++i) {
-    if (i->isVirtual())
-      continue;
-    const CXXRecordDecl *Base =
-      cast<CXXRecordDecl>(i->getType()->getAs<RecordType>()->getDecl());
-    if (GetNestedPaths(NestedBasePaths, Base, BaseClassDecl)) {
-      NestedBasePaths.push_back(Base);
-      return true;
-    }
-  }
-  return false;
-}
-
-llvm::Value *CodeGenFunction::AddressCXXOfBaseClass(llvm::Value *BaseValue,
-                                          const CXXRecordDecl *ClassDecl,
-                                          const CXXRecordDecl *BaseClassDecl) {
-  if (ClassDecl == BaseClassDecl)
-    return BaseValue;
-
-  llvm::Type *I8Ptr = llvm::PointerType::getUnqual(llvm::Type::getInt8Ty(VMContext));
-  llvm::SmallVector<const CXXRecordDecl *, 16> NestedBasePaths;
-  GetNestedPaths(NestedBasePaths, ClassDecl, BaseClassDecl);
-  assert(NestedBasePaths.size() > 0 &&
-         "AddressCXXOfBaseClass - inheritence path failed");
-  NestedBasePaths.push_back(ClassDecl);
-  uint64_t Offset = 0;
-
-  // Accessing a member of the base class. Must add delata to
-  // the load of 'this'.
-  for (unsigned i = NestedBasePaths.size()-1; i > 0; i--) {
-    const CXXRecordDecl *DerivedClass = NestedBasePaths[i];
-    const CXXRecordDecl *BaseClass = NestedBasePaths[i-1];
-    const ASTRecordLayout &Layout =
-      getContext().getASTRecordLayout(DerivedClass);
-    Offset += Layout.getBaseClassOffset(BaseClass) / 8;
-  }
-  llvm::Value *OffsetVal =
-    llvm::ConstantInt::get(
-                  CGM.getTypes().ConvertType(CGM.getContext().LongTy), Offset);
-  BaseValue = Builder.CreateBitCast(BaseValue, I8Ptr);
-  BaseValue = Builder.CreateGEP(BaseValue, OffsetVal, "add.ptr");
-  QualType BTy =
-    getContext().getCanonicalType(
-      getContext().getTypeDeclType(const_cast<CXXRecordDecl*>(BaseClassDecl)));
-  const llvm::Type *BasePtr = ConvertType(BTy);
-  BasePtr = llvm::PointerType::getUnqual(BasePtr);
-  BaseValue = Builder.CreateBitCast(BaseValue, BasePtr);
-  return BaseValue;
-}
-
 /// EmitCXXAggrConstructorCall - This routine essentially creates a (nested)
 /// for-loop to call the default constructor on individual members of the
 /// array. 'Array' is the array type, 'This' is llvm pointer of the start