Header guard canonicalization, clang part.

[clang] / include / clang / Basic / LLVM.h

diff --git a/include/clang/Basic/LLVM.h b/include/clang/Basic/LLVM.h
index 7df593696437487831d03309bcd6e370fd2d3481..3e01d25add2d0487b4ac82ed8fb1d722689e6504 100644 (file)
--- a/include/clang/Basic/LLVM.h
+++ b/include/clang/Basic/LLVM.h
@@ -7,24 +7,42 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// This file forward declares and imports various common LLVM datatypes that
-// clang wants to use unqualified.
-//
+/// \file
+/// \brief Forward-declares and imports various common LLVM datatypes that
+/// clang wants to use unqualified.
+///
 //===----------------------------------------------------------------------===//
 
-#ifndef CLANG_BASIC_LLVM_H
-#define CLANG_BASIC_LLVM_H
+#ifndef LLVM_CLANG_BASIC_LLVM_H
+#define LLVM_CLANG_BASIC_LLVM_H
 
-// This should be the only #include, force #includes of all the others on
-// clients.
+// Do not proliferate #includes here, require clients to #include their
+// dependencies.
+// Casting.h has complex templates that cannot be easily forward declared.
 #include "llvm/Support/Casting.h"
+// None.h includes an enumerator that is desired & cannot be forward declared
+// without a definition of NoneType.
+#include "llvm/ADT/None.h"
 
 namespace llvm {
   // ADT's.
   class StringRef;
   class Twine;
+  template<typename T> class ArrayRef;
+  template<typename T> class MutableArrayRef;
+  template<unsigned InternalLen> class SmallString;
   template<typename T, unsigned N> class SmallVector;
   template<typename T> class SmallVectorImpl;
+  template<typename T> class Optional;
+
+  template<typename T>
+  struct SaveAndRestore;
+
+  // Reference counting.
+  template <typename T> class IntrusiveRefCntPtr;
+  template <typename T> struct IntrusiveRefCntPtrInfo;
+  template <class Derived> class RefCountedBase;
+  class RefCountedBaseVPTR;
 
   class raw_ostream;
   // TODO: DenseMap, ...
@@ -40,11 +58,23 @@ namespace clang {
   using llvm::cast_or_null;
   
   // ADT's.
+  using llvm::None;
+  using llvm::Optional;
   using llvm::StringRef;
   using llvm::Twine;
+  using llvm::ArrayRef;
+  using llvm::MutableArrayRef;
+  using llvm::SmallString;
   using llvm::SmallVector;
   using llvm::SmallVectorImpl;
-  
+  using llvm::SaveAndRestore;
+
+  // Reference counting.
+  using llvm::IntrusiveRefCntPtr;
+  using llvm::IntrusiveRefCntPtrInfo;
+  using llvm::RefCountedBase;
+  using llvm::RefCountedBaseVPTR;
+
   using llvm::raw_ostream;
 } // end namespace clang.