[C++11] Replace llvm::tie with std::tie.

llvm-svn: 202639
diff --git a/clang/lib/Frontend/ASTUnit.cpp b/clang/lib/Frontend/ASTUnit.cpp
index a78ea76..913bbc7 100644
--- a/clang/lib/Frontend/ASTUnit.cpp
+++ b/clang/lib/Frontend/ASTUnit.cpp
@@ -2673,7 +2673,7 @@
   assert(SM.isLocalSourceLocation(FileLoc));
   FileID FID;
   unsigned Offset;
-  llvm::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
+  std::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
   if (FID.isInvalid())
     return;
 
@@ -2856,7 +2856,7 @@
     serialization::ModuleFile &
       Mod = Reader->getModuleManager().getPrimaryModule();
     ASTReader::ModuleDeclIterator MDI, MDE;
-    llvm::tie(MDI, MDE) = Reader->getModuleFileLevelDecls(Mod);
+    std::tie(MDI, MDE) = Reader->getModuleFileLevelDecls(Mod);
     for (; MDI != MDE; ++MDI) {
       if (!Fn(context, *MDI))
         return false;