diff --git a/polly/include/polly/CodeGen/IslAst.h b/polly/include/polly/CodeGen/IslAst.h
--- a/polly/include/polly/CodeGen/IslAst.h
+++ b/polly/include/polly/CodeGen/IslAst.h
@@ -148,7 +148,7 @@
   static bool isOutermostParallel(__isl_keep isl_ast_node *Node);
 
   /// Is this loop an innermost parallel loop?
-  static bool isInnermostParallel(__isl_keep isl_ast_node *Node);
+  static bool isInnermostParallel(const isl::ast_node &Node);
 
   /// Is this loop a reduction parallel loop?
   static bool isReductionParallel(__isl_keep isl_ast_node *Node);
diff --git a/polly/lib/CodeGen/IslAst.cpp b/polly/lib/CodeGen/IslAst.cpp
--- a/polly/lib/CodeGen/IslAst.cpp
+++ b/polly/lib/CodeGen/IslAst.cpp
@@ -181,7 +181,7 @@
   if (DD)
     Printer = printLine(Printer, DepDisPragmaStr, DD);
 
-  if (IslAstInfo::isInnermostParallel(Node))
+  if (IslAstInfo::isInnermostParallel(isl::manage_copy(Node)))
     Printer = printLine(Printer, SimdPragmaStr + BrokenReductionsStr);
 
   if (IslAstInfo::isExecutedInParallel(Node))
@@ -481,7 +481,7 @@
           NumForLoops++;
           if (IslAstInfo::isParallel(Node))
             NumParallel++;
-          if (IslAstInfo::isInnermostParallel(Node))
+          if (IslAstInfo::isInnermostParallel(isl::manage_copy(Node)))
             NumInnermostParallel++;
           if (IslAstInfo::isOutermostParallel(Node))
             NumOutermostParallel++;
@@ -601,12 +601,12 @@
 }
 
 bool IslAstInfo::isParallel(__isl_keep isl_ast_node *Node) {
-  return IslAstInfo::isInnermostParallel(Node) ||
+  return IslAstInfo::isInnermostParallel(isl::manage_copy(Node)) ||
          IslAstInfo::isOutermostParallel(Node);
 }
 
-bool IslAstInfo::isInnermostParallel(__isl_keep isl_ast_node *Node) {
-  IslAstUserPayload *Payload = getNodePayload(isl::manage_copy(Node));
+bool IslAstInfo::isInnermostParallel(const isl::ast_node &Node) {
+  IslAstUserPayload *Payload = getNodePayload(Node);
   return Payload && Payload->IsInnermostParallel;
 }
 
diff --git a/polly/lib/CodeGen/IslNodeBuilder.cpp b/polly/lib/CodeGen/IslNodeBuilder.cpp
--- a/polly/lib/CodeGen/IslNodeBuilder.cpp
+++ b/polly/lib/CodeGen/IslNodeBuilder.cpp
@@ -762,7 +762,7 @@
 void IslNodeBuilder::createFor(__isl_take isl_ast_node *For) {
   bool Vector = PollyVectorizerChoice == VECTORIZER_POLLY;
 
-  if (Vector && IslAstInfo::isInnermostParallel(For) &&
+  if (Vector && IslAstInfo::isInnermostParallel(isl::manage_copy(For)) &&
       !IslAstInfo::isReductionParallel(For)) {
     int VectorWidth = getNumberOfIterations(isl::manage_copy(For));
     if (1 < VectorWidth && VectorWidth <= 16 && !hasPartialAccesses(For)) {