NFC: Add the emacs c++ mode hint "-*- C++ -*-" to the headers that don't have it

https://llvm.org/docs/CodingStandards.html#file-headers

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@337780 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/AST/TypeOrdering.h

@@ -1,4 +1,4 @@
-//===-------------- TypeOrdering.h - Total ordering for types -------------===//
+//===-------------- TypeOrdering.h - Total ordering for types ---*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //

include/clang/Basic/CharInfo.h

@@ -1,4 +1,4 @@
-//===--- clang/Basic/CharInfo.h - Classifying ASCII Characters ------------===//
+//===--- clang/Basic/CharInfo.h - Classifying ASCII Characters --*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //

include/clang/CodeGen/SwiftCallingConv.h

@@ -1,4 +1,4 @@
-//==-- SwiftCallingConv.h - Swift ABI lowering -----------------------------==//
+//==-- SwiftCallingConv.h - Swift ABI lowering ------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //

include/clang/Frontend/LayoutOverrideSource.h

@@ -1,4 +1,4 @@
-//===--- LayoutOverrideSource.h --Override Record Layouts -----------------===//
+//===--- LayoutOverrideSource.h --Override Record Layouts -------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //

include/clang/Frontend/SerializedDiagnosticPrinter.h

@@ -1,4 +1,4 @@
-//===--- SerializedDiagnosticPrinter.h - Serializer for diagnostics -------===//
+//===--- SerializedDiagnosticPrinter.h - Diagnostics serializer -*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //

include/clang/Index/IndexDataConsumer.h

@@ -1,4 +1,4 @@
-//===--- IndexDataConsumer.h - Abstract index data consumer ---------------===//
+//===--- IndexDataConsumer.h - Abstract index data consumer -----*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //

include/clang/Index/IndexSymbol.h

@@ -1,4 +1,4 @@
-//===--- IndexSymbol.h - Types and functions for indexing symbols ---------===//
+//===- IndexSymbol.h - Types and functions for indexing symbols -*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //

include/clang/Index/IndexingAction.h

@@ -1,4 +1,4 @@
-//===--- IndexingAction.h - Frontend index action -------------------------===//
+//===--- IndexingAction.h - Frontend index action ---------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //

include/clang/Index/USRGeneration.h

@@ -1,4 +1,4 @@
-//===- USRGeneration.h - Routines for USR generation ----------------------===//
+//===- USRGeneration.h - Routines for USR generation ------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //

include/clang/Sema/SemaFixItUtils.h

@@ -1,4 +1,4 @@
-//===--- SemaFixItUtils.h - Sema FixIts -----------------------------------===//
+//===--- SemaFixItUtils.h - Sema FixIts -------------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //

lib/Basic/Targets.h

@@ -1,4 +1,4 @@
-//===------- Targets.h - Declare target feature support -------------------===//
+//===------- Targets.h - Declare target feature support ---------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //

lib/Basic/Targets/Sparc.h

@@ -1,4 +1,4 @@
-//===--- Sparc.h - Declare Sparc target feature support -------------------===//
+//===--- Sparc.h - declare sparc target feature support ---------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //

lib/Format/BreakableToken.h

@@ -1,4 +1,4 @@
-//===--- BreakableToken.h - Format C++ code -------------------------------===//
+//===--- BreakableToken.h - Format C++ code ---------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //

lib/Format/Encoding.h

@@ -1,4 +1,4 @@
-//===--- Encoding.h - Format C++ code -------------------------------------===//
+//===--- Encoding.h - Format C++ code ---------------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //