Avoid Attr.h includes, CodeGen edition
This saves around 20 includes of Attr.h. Not much.
diff --git a/clang/lib/CodeGen/CGObjCGNU.cpp b/clang/lib/CodeGen/CGObjCGNU.cpp
index 12454bb..479cd8e 100644
--- a/clang/lib/CodeGen/CGObjCGNU.cpp
+++ b/clang/lib/CodeGen/CGObjCGNU.cpp
@@ -13,19 +13,20 @@
//
//===----------------------------------------------------------------------===//
-#include "CGObjCRuntime.h"
+#include "CGCXXABI.h"
#include "CGCleanup.h"
+#include "CGObjCRuntime.h"
#include "CodeGenFunction.h"
#include "CodeGenModule.h"
-#include "CGCXXABI.h"
-#include "clang/CodeGen/ConstantInitBuilder.h"
#include "clang/AST/ASTContext.h"
+#include "clang/AST/Attr.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/RecordLayout.h"
#include "clang/AST/StmtObjC.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceManager.h"
+#include "clang/CodeGen/ConstantInitBuilder.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/IR/DataLayout.h"