[OPENMP 4.1] Initial support for extended 'ordered' clause.

OpenMP 4.1 introduces optional argument '(n)' for 'ordered' clause, where 'n' is a number of loops that immediately follow the directive.
'n' must be constant positive integer expressions and it must be less or equal than the number of the loops in the resulting loop nest.
Patch adds parsing and semantic analysis for this optional argument.

llvm-svn: 243635

2 files changed, 10 insertions, 2 deletions

diff --git a/clang/lib/AST/StmtPrinter.cpp b/clang/lib/AST/StmtPrinter.cpp
index 30f15e037ba..57187ca8620 100644
--- a/clang/lib/AST/StmtPrinter.cpp
+++ b/clang/lib/AST/StmtPrinter.cpp
@@ -651,8 +651,13 @@ void OMPClausePrinter::VisitOMPScheduleClause(OMPScheduleClause *Node) {
   OS << ")";
 }
 
-void OMPClausePrinter::VisitOMPOrderedClause(OMPOrderedClause *) {
+void OMPClausePrinter::VisitOMPOrderedClause(OMPOrderedClause *Node) {
   OS << "ordered";
+  if (auto *Num = Node->getNumForLoops()) {
+    OS << "(";
+    Num->printPretty(OS, nullptr, Policy, 0);
+    OS << ")";
+  }
 }
 
 void OMPClausePrinter::VisitOMPNowaitClause(OMPNowaitClause *) {
diff --git a/clang/lib/AST/StmtProfile.cpp b/clang/lib/AST/StmtProfile.cpp
index f2fa53d25cd..091682ad7ff 100644
--- a/clang/lib/AST/StmtProfile.cpp
+++ b/clang/lib/AST/StmtProfile.cpp
@@ -306,7 +306,10 @@ void OMPClauseProfiler::VisitOMPScheduleClause(const OMPScheduleClause *C) {
   }
 }
 
-void OMPClauseProfiler::VisitOMPOrderedClause(const OMPOrderedClause *) {}
+void OMPClauseProfiler::VisitOMPOrderedClause(const OMPOrderedClause *C) {
+  if (auto *Num = C->getNumForLoops())
+    Profiler->VisitStmt(Num);
+}
 
 void OMPClauseProfiler::VisitOMPNowaitClause(const OMPNowaitClause *) {}