[OPENMP]Allow final clause in combined task-based directives.
The condition of the final clause must be captured in the combined
task-based directives, like 'parallel master taskloop' directive.

llvm-svn: 374942
diff --git a/clang/lib/AST/OpenMPClause.cpp b/clang/lib/AST/OpenMPClause.cpp
index c1aeaf6..ccb3cd3 100644
--- a/clang/lib/AST/OpenMPClause.cpp
+++ b/clang/lib/AST/OpenMPClause.cpp
@@ -88,9 +88,10 @@
     return static_cast<const OMPGrainsizeClause *>(C);
   case OMPC_num_tasks:
     return static_cast<const OMPNumTasksClause *>(C);
+  case OMPC_final:
+    return static_cast<const OMPFinalClause *>(C);
   case OMPC_default:
   case OMPC_proc_bind:
-  case OMPC_final:
   case OMPC_safelen:
   case OMPC_simdlen:
   case OMPC_allocator:
@@ -248,6 +249,12 @@
   return child_range(&NumTasks, &NumTasks + 1);
 }
 
+OMPClause::child_range OMPFinalClause::used_children() {
+  if (Stmt **C = getAddrOfExprAsWritten(getPreInitStmt()))
+    return child_range(C, C + 1);
+  return child_range(&Condition, &Condition + 1);
+}
+
 OMPOrderedClause *OMPOrderedClause::Create(const ASTContext &C, Expr *Num,
                                            unsigned NumLoops,
                                            SourceLocation StartLoc,