[OPENMP50]Add support for 'parallel master taskloop' construct.

Added parsing/sema/codegen support for 'parallel master taskloop'
constructs. Some of the clauses, like 'grainsize', 'num_tasks', 'final'
and 'priority' are not supported in full, only constant expressions can
be used currently in these clauses.

llvm-svn: 374791
diff --git a/clang/lib/AST/StmtPrinter.cpp b/clang/lib/AST/StmtPrinter.cpp
index 3d6b02f..e392682 100644
--- a/clang/lib/AST/StmtPrinter.cpp
+++ b/clang/lib/AST/StmtPrinter.cpp
@@ -829,6 +829,12 @@
   PrintOMPExecutableDirective(Node);
 }
 
+void StmtPrinter::VisitOMPParallelMasterTaskLoopDirective(
+    OMPParallelMasterTaskLoopDirective *Node) {
+  Indent() << "#pragma omp parallel master taskloop";
+  PrintOMPExecutableDirective(Node);
+}
+
 void StmtPrinter::VisitOMPDistributeDirective(OMPDistributeDirective *Node) {
   Indent() << "#pragma omp distribute";
   PrintOMPExecutableDirective(Node);