[CodeGen] Avoid ctor/dtor boilerplate with some C++11

Non-owning pointers that cache LLVM types and constants can use
'nullptr' default member initializers so that we don't need to mention
them in the constructor initializer list.

Owning pointers should use std::unique_ptr so that we don't need to
manually delete them in the destructor. They also don't need to be
mentioned in the constructor at that point.

NFC

llvm-svn: 266263

1 files changed, 20 insertions, 20 deletions

diff --git a/clang/lib/CodeGen/CodeGenModule.h b/clang/lib/CodeGen/CodeGenModule.h
index e1b4ef9aee8..34d1111889a 100644
--- a/clang/lib/CodeGen/CodeGenModule.h
+++ b/clang/lib/CodeGen/CodeGenModule.h
@@ -273,9 +273,9 @@ private:
   std::unique_ptr<CGCXXABI> ABI;
   llvm::LLVMContext &VMContext;
 
-  CodeGenTBAA *TBAA;
+  std::unique_ptr<CodeGenTBAA> TBAA;
   
-  mutable const TargetCodeGenInfo *TheTargetCodeGenInfo;
+  mutable std::unique_ptr<TargetCodeGenInfo> TheTargetCodeGenInfo;
   
   // This should not be moved earlier, since its initialization depends on some
   // of the previous reference members being already initialized and also checks
@@ -285,13 +285,13 @@ private:
   /// Holds information about C++ vtables.
   CodeGenVTables VTables;
 
-  CGObjCRuntime* ObjCRuntime;
-  CGOpenCLRuntime* OpenCLRuntime;
-  CGOpenMPRuntime* OpenMPRuntime;
-  CGCUDARuntime* CUDARuntime;
-  CGDebugInfo* DebugInfo;
-  ObjCEntrypoints *ObjCData;
-  llvm::MDNode *NoObjCARCExceptionsMetadata;
+  std::unique_ptr<CGObjCRuntime> ObjCRuntime;
+  std::unique_ptr<CGOpenCLRuntime> OpenCLRuntime;
+  std::unique_ptr<CGOpenMPRuntime> OpenMPRuntime;
+  std::unique_ptr<CGCUDARuntime> CUDARuntime;
+  std::unique_ptr<CGDebugInfo> DebugInfo;
+  std::unique_ptr<ObjCEntrypoints> ObjCData;
+  llvm::MDNode *NoObjCARCExceptionsMetadata = nullptr;
   std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader;
   InstrProfStats PGOStats;
   std::unique_ptr<llvm::SanitizerStatReport> SanStats;
@@ -435,8 +435,8 @@ private:
   llvm::WeakVH ConstantStringClassRef;
 
   /// \brief The LLVM type corresponding to NSConstantString.
-  llvm::StructType *NSConstantStringType;
-  
+  llvm::StructType *NSConstantStringType = nullptr;
+
   /// \brief The type used to describe the state of a fast enumeration in
   /// Objective-C's for..in loop.
   QualType ObjCFastEnumerationStateType;
@@ -456,24 +456,24 @@ private:
   /// @name Cache for Blocks Runtime Globals
   /// @{
 
-  llvm::Constant *NSConcreteGlobalBlock;
-  llvm::Constant *NSConcreteStackBlock;
+  llvm::Constant *NSConcreteGlobalBlock = nullptr;
+  llvm::Constant *NSConcreteStackBlock = nullptr;
 
-  llvm::Constant *BlockObjectAssign;
-  llvm::Constant *BlockObjectDispose;
+  llvm::Constant *BlockObjectAssign = nullptr;
+  llvm::Constant *BlockObjectDispose = nullptr;
 
-  llvm::Type *BlockDescriptorType;
-  llvm::Type *GenericBlockLiteralType;
+  llvm::Type *BlockDescriptorType = nullptr;
+  llvm::Type *GenericBlockLiteralType = nullptr;
 
   struct {
     int GlobalUniqueCount;
   } Block;
 
   /// void @llvm.lifetime.start(i64 %size, i8* nocapture <ptr>)
-  llvm::Constant *LifetimeStartFn;
+  llvm::Constant *LifetimeStartFn = nullptr;
 
   /// void @llvm.lifetime.end(i64 %size, i8* nocapture <ptr>)
-  llvm::Constant *LifetimeEndFn;
+  llvm::Constant *LifetimeEndFn = nullptr;
 
   GlobalDecl initializedGlobalDecl;
 
@@ -591,7 +591,7 @@ public:
     TypeDescriptorMap[Ty] = C;
   }
 
-  CGDebugInfo *getModuleDebugInfo() { return DebugInfo; }
+  CGDebugInfo *getModuleDebugInfo() { return DebugInfo.get(); }
 
   llvm::MDNode *getNoObjCARCExceptionsMetadata() {
     if (!NoObjCARCExceptionsMetadata)