Auto sandboxing: control flow expansions for ARM

lib/Target/ARM/MCTargetDesc/ARMMCNaClExpander.h

Index: lib/Target/ARM/MCTargetDesc/ARMMCNaClExpander.h
diff --git a/lib/Target/ARM/MCTargetDesc/ARMMCNaClExpander.h b/lib/Target/ARM/MCTargetDesc/ARMMCNaClExpander.h
index 0fe0ba28f284cf46a1ba939f6b565421ddef160d..4132278b0ed0a844e391937a7005b635b7a7920b 100644
--- a/lib/Target/ARM/MCTargetDesc/ARMMCNaClExpander.h
+++ b/lib/Target/ARM/MCTargetDesc/ARMMCNaClExpander.h
@@ -36,7 +36,14 @@ public:
                   const MCSubtargetInfo &STI) override;
 
 private:
-  bool Guard = false; // recursion Guard
+  bool Guard = false; // recursion guard
+  int SaveCount = 0;
+
+  void expandIndirectBranch(const MCInst &Inst, MCStreamer &Out,
+                            const MCSubtargetInfo &STI, bool isCall);
+
+  void expandCall(const MCInst &Inst, MCStreamer &Out,
+                  const MCSubtargetInfo &STI);
 
   void doExpandInst(const MCInst &Inst, MCStreamer &Out,
                     const MCSubtargetInfo &STI);