[CodeGen] Reduce visibility of implementation details
NFC.
llvm-svn: 241164
diff --git a/llvm/lib/CodeGen/LiveDebugVariables.h b/llvm/lib/CodeGen/LiveDebugVariables.h
index ac2d1a1..694aa17 100644
--- a/llvm/lib/CodeGen/LiveDebugVariables.h
+++ b/llvm/lib/CodeGen/LiveDebugVariables.h
@@ -31,7 +31,7 @@
class LiveIntervals;
class VirtRegMap;
-class LiveDebugVariables : public MachineFunctionPass {
+class LLVM_LIBRARY_VISIBILITY LiveDebugVariables : public MachineFunctionPass {
void *pImpl;
DenseMap<const Function *, DISubprogram *> FunctionDIs;