mapped_scop.cc: hide fixThreadsBelow

This function was never meant to be exposed.

Author: Sven Verdoolaege

tc/core/polyhedral/cuda/mapped_scop.cc

@@ -166,6 +166,8 @@ void MappedScop::mapToBlocksAndScaleBand(
   bandScale(band, tileSizes);
 }
 
+namespace {
+
 /*
  * Given a node in the schedule tree of a mapped scop,
  * insert a mapping filter underneath (if needed) that fixes
@@ -186,6 +188,8 @@ void fixThreadsBelow(
   mscop.mapThreadsBackward(bandTree);
 }
 
+} // namespace
+
 bool MappedScop::detectReductions(detail::ScheduleTree* tree) {
   bool found = false;
   for (auto c : tree->children()) {