Add missing forward declaration.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79481 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/MachOWriter.h b/lib/CodeGen/MachOWriter.h
index e5c7ee6c25397c9254c1adfff6461b1e51b4a577..9d8e9d450baab068ca66bef3f5c7cf31a4b9000e 100644 (file)
--- a/lib/CodeGen/MachOWriter.h
+++ b/lib/CodeGen/MachOWriter.h
@@ -22,6 +22,7 @@ namespace llvm {
   class Constant;
   class GlobalVariable;
   class Mangler;
+  class MachineBasicBlock;
   class MachineRelocation;
   class MachOCodeEmitter;
   struct MachODySymTab;