[OPENMP] Initial support for parsing and sema analysis of 'untied' clause.

llvm-svn: 213257
diff --git a/clang/lib/Parse/ParseOpenMP.cpp b/clang/lib/Parse/ParseOpenMP.cpp
index 172aef8..9f1fa0a 100644
--- a/clang/lib/Parse/ParseOpenMP.cpp
+++ b/clang/lib/Parse/ParseOpenMP.cpp
@@ -292,7 +292,7 @@
 ///       default-clause | private-clause | firstprivate-clause | shared-clause
 ///       | linear-clause | aligned-clause | collapse-clause |
 ///       lastprivate-clause | reduction-clause | proc_bind-clause |
-///       schedule-clause | copyin-clause | copyprivate-clause
+///       schedule-clause | copyin-clause | copyprivate-clause | untied-clause
 ///
 OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind,
                                      OpenMPClauseKind CKind, bool FirstClause) {
@@ -353,6 +353,7 @@
     break;
   case OMPC_ordered:
   case OMPC_nowait:
+  case OMPC_untied:
     // OpenMP [2.7.1, Restrictions, p. 9]
     //  Only one ordered clause can appear on a loop directive.
     // OpenMP [2.7.1, Restrictions, C/C++, p. 4]
@@ -468,6 +469,9 @@
 ///    nowait-clause:
 ///         'nowait'
 ///
+///    untied-clause:
+///         'untied'
+///
 OMPClause *Parser::ParseOpenMPClause(OpenMPClauseKind Kind) {
   SourceLocation Loc = Tok.getLocation();
   ConsumeAnyToken();