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, 19 insertions, 18 deletions

diff --git a/clang/lib/Frontend/FrontendOptions.cpp b/clang/lib/Frontend/FrontendOptions.cpp
index 6ccb2c39560..5c1fbf889c2 100644
--- a/clang/lib/Frontend/FrontendOptions.cpp
+++ b/clang/lib/Frontend/FrontendOptions.cpp
@@ -7,28 +7,29 @@
 //===----------------------------------------------------------------------===//
 
 #include "clang/Frontend/FrontendOptions.h"
+#include "clang/Basic/LangStandard.h"
 #include "llvm/ADT/StringSwitch.h"
 
 using namespace clang;
 
 InputKind FrontendOptions::getInputKindForExtension(StringRef Extension) {
   return llvm::StringSwitch<InputKind>(Extension)
-    .Cases("ast", "pcm", InputKind(InputKind::Unknown, InputKind::Precompiled))
-    .Case("c", InputKind::C)
-    .Cases("S", "s", InputKind::Asm)
-    .Case("i", InputKind(InputKind::C).getPreprocessed())
-    .Case("ii", InputKind(InputKind::CXX).getPreprocessed())
-    .Case("cui", InputKind(InputKind::CUDA).getPreprocessed())
-    .Case("m", InputKind::ObjC)
-    .Case("mi", InputKind(InputKind::ObjC).getPreprocessed())
-    .Cases("mm", "M", InputKind::ObjCXX)
-    .Case("mii", InputKind(InputKind::ObjCXX).getPreprocessed())
-    .Cases("C", "cc", "cp", InputKind::CXX)
-    .Cases("cpp", "CPP", "c++", "cxx", "hpp", InputKind::CXX)
-    .Case("cppm", InputKind::CXX)
-    .Case("iim", InputKind(InputKind::CXX).getPreprocessed())
-    .Case("cl", InputKind::OpenCL)
-    .Case("cu", InputKind::CUDA)
-    .Cases("ll", "bc", InputKind::LLVM_IR)
-    .Default(InputKind::Unknown);
+      .Cases("ast", "pcm", InputKind(Language::Unknown, InputKind::Precompiled))
+      .Case("c", Language::C)
+      .Cases("S", "s", Language::Asm)
+      .Case("i", InputKind(Language::C).getPreprocessed())
+      .Case("ii", InputKind(Language::CXX).getPreprocessed())
+      .Case("cui", InputKind(Language::CUDA).getPreprocessed())
+      .Case("m", Language::ObjC)
+      .Case("mi", InputKind(Language::ObjC).getPreprocessed())
+      .Cases("mm", "M", Language::ObjCXX)
+      .Case("mii", InputKind(Language::ObjCXX).getPreprocessed())
+      .Cases("C", "cc", "cp", Language::CXX)
+      .Cases("cpp", "CPP", "c++", "cxx", "hpp", Language::CXX)
+      .Case("cppm", Language::CXX)
+      .Case("iim", InputKind(Language::CXX).getPreprocessed())
+      .Case("cl", Language::OpenCL)
+      .Case("cu", Language::CUDA)
+      .Cases("ll", "bc", Language::LLVM_IR)
+      .Default(Language::Unknown);
 }