Move LangStandard*, InputKind::Language to Basic

This patch is a prerequisite for using LangStandard from Driver in
https://reviews.llvm.org/D64793.

It moves LangStandard* and InputKind::Language to Basic.  It is mostly
mechanical, with only a few changes of note:

- enum Language has been changed into enum class Language : uint8_t to
  avoid a clash between OpenCL in enum Language and OpenCL in enum
  LangFeatures and not to increase the size of class InputKind.

- Now that getLangStandardForName, which is currently unused, also checks
  both canonical and alias names, I've introduced a helper getLangKind
  which factors out a code pattern already used 3 times.

The patch has been tested on x86_64-pc-solaris2.11, sparcv9-sun-solaris2.11,
and x86_64-pc-linux-gnu.

There's a companion patch for lldb which uses LangStandard.h
(https://reviews.llvm.org/D65717).

While polly includes isl which in turn uses InputKind::C, that part of the
code isn't even built inside the llvm tree.  I've posted a patch to allow
for both InputKind::C and Language::C upstream
(https://groups.google.com/forum/#!topic/isl-development/6oEvNWOSQFE).

Differential Revision: https://reviews.llvm.org/D65562

llvm-svn: 367864

1 files changed, 6 insertions, 5 deletions

diff --git a/clang/lib/Frontend/CompilerInstance.cpp b/clang/lib/Frontend/CompilerInstance.cpp
index a556f4e..6948e1f 100644
--- a/clang/lib/Frontend/CompilerInstance.cpp
+++ b/clang/lib/Frontend/CompilerInstance.cpp
@@ -13,6 +13,7 @@
 #include "clang/Basic/CharInfo.h"
 #include "clang/Basic/Diagnostic.h"
 #include "clang/Basic/FileManager.h"
+#include "clang/Basic/LangStandard.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Basic/Stack.h"
 #include "clang/Basic/TargetInfo.h"
@@ -1002,14 +1003,14 @@ bool CompilerInstance::ExecuteAction(FrontendAction &Act) {
 
 /// Determine the appropriate source input kind based on language
 /// options.
-static InputKind::Language getLanguageFromOptions(const LangOptions &LangOpts) {
+static Language getLanguageFromOptions(const LangOptions &LangOpts) {
   if (LangOpts.OpenCL)
-    return InputKind::OpenCL;
+    return Language::OpenCL;
   if (LangOpts.CUDA)
-    return InputKind::CUDA;
+    return Language::CUDA;
   if (LangOpts.ObjC)
-    return LangOpts.CPlusPlus ? InputKind::ObjCXX : InputKind::ObjC;
-  return LangOpts.CPlusPlus ? InputKind::CXX : InputKind::C;
+    return LangOpts.CPlusPlus ? Language::ObjCXX : Language::ObjC;
+  return LangOpts.CPlusPlus ? Language::CXX : Language::C;
 }
 
 /// Compile a module file for the given module, using the options