Add support for structured printing

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4432 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/MachineInstr.h

@@ -16,6 +16,7 @@
 class Value;
 class Function;
 class MachineBasicBlock;
+class TargetMachine;
 
 typedef int MachineOpCode;
 
@@ -325,7 +326,8 @@ public:
 
   //
   // Debugging support
-  // 
+  //
+  void print(std::ostream &OS, const TargetMachine &TM);
   void dump() const;
   friend std::ostream& operator<<(std::ostream& os, const MachineInstr& minstr);