Out-of-line CompilerInstance::takeSema to avoid a header dependence from CompilerInstance.h on Sema.h

Hopefully this fixes the libstdc++ build on some of the buildbots after
r215321.

llvm-svn: 215325

clang/lib/Frontend/CompilerInstance.cpp

@@ -108,7 +108,11 @@ void CompilerInstance::setASTConsumer(std::unique_ptr<ASTConsumer> Value) {
 void CompilerInstance::setCodeCompletionConsumer(CodeCompleteConsumer *Value) {
   CompletionConsumer.reset(Value);
 }
- 
+
+std::unique_ptr<Sema> CompilerInstance::takeSema() {
+  return std::move(TheSema);
+}
+
 IntrusiveRefCntPtr<ASTReader> CompilerInstance::getModuleManager() const {
   return ModuleManager;
 }