Fix a release-asserts warning.  Debug functions should be marked used,
if there are no other uses.  If people don't need this routine
anymore, if should be deleted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77274 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/LowerSwitch.cpp b/lib/Transforms/Utils/LowerSwitch.cpp
index 17e40e1..5c20a81 100644
--- a/lib/Transforms/Utils/LowerSwitch.cpp
+++ b/lib/Transforms/Utils/LowerSwitch.cpp
@@ -110,6 +110,8 @@
 // operator<< - Used for debugging purposes.
 //
 static raw_ostream& operator<<(raw_ostream &O,
+                               const LowerSwitch::CaseVector &C) __attribute((used));
+static raw_ostream& operator<<(raw_ostream &O,
                                const LowerSwitch::CaseVector &C) {
   O << "[";