Symbol hygiene: Make sure declarations and definitions match, make helper functions static.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166376 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
index 81e3ff6..2ae0869 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
@@ -635,6 +635,7 @@
 }
 
 
+namespace {
 //===----------------------------------------------------------------------===//
 // ScheduleDAGLinearize - No scheduling scheduler, it simply linearize the
 // DAG in topological order.
@@ -654,6 +655,7 @@
 
   void ScheduleNode(SDNode *N);
 };
+} // end anonymous namespace
 
 void ScheduleDAGLinearize::ScheduleNode(SDNode *N) {
   if (N->getNodeId() != 0)