[OPENMP 4.1] Allow references in init expression for loop-based constructs.

OpenMP 4.1 allows to use variables with reference types in private clauses and, therefore, in init expressions of the cannonical loop forms.

llvm-svn: 244209
diff --git a/clang/lib/Serialization/ASTReaderStmt.cpp b/clang/lib/Serialization/ASTReaderStmt.cpp
index 83c4625..f95e66f 100644
--- a/clang/lib/Serialization/ASTReaderStmt.cpp
+++ b/clang/lib/Serialization/ASTReaderStmt.cpp
@@ -2113,6 +2113,10 @@
   Sub.clear();
   for (unsigned i = 0; i < CollapsedNum; ++i)
     Sub.push_back(Reader.ReadSubExpr());
+  D->setPrivateCounters(Sub);
+  Sub.clear();
+  for (unsigned i = 0; i < CollapsedNum; ++i)
+    Sub.push_back(Reader.ReadSubExpr());
   D->setUpdates(Sub);
   Sub.clear();
   for (unsigned i = 0; i < CollapsedNum; ++i)