Release build: guard dump functions with "ifndef NDEBUG"

No functional change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163339 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SplitKit.cpp b/lib/CodeGen/SplitKit.cpp
index 4a2b7ec..96151b6 100644
--- a/lib/CodeGen/SplitKit.cpp
+++ b/lib/CodeGen/SplitKit.cpp
@@ -356,6 +356,7 @@
   Edit->anyRematerializable(0);
 }
 
+#ifndef NDEBUG
 void SplitEditor::dump() const {
   if (RegAssign.empty()) {
     dbgs() << " empty\n";
@@ -366,6 +367,7 @@
     dbgs() << " [" << I.start() << ';' << I.stop() << "):" << I.value();
   dbgs() << '\n';
 }
+#endif
 
 VNInfo *SplitEditor::defValue(unsigned RegIdx,
                               const VNInfo *ParentVNI,