Add branch relaxation pass (shamelessly stolen from PPC).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93554 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/MSP430/MSP430TargetMachine.h b/lib/Target/MSP430/MSP430TargetMachine.h
index d386140..d93ac5c 100644
--- a/lib/Target/MSP430/MSP430TargetMachine.h
+++ b/lib/Target/MSP430/MSP430TargetMachine.h
@@ -55,6 +55,7 @@
   }
 
   virtual bool addInstSelector(PassManagerBase &PM, CodeGenOpt::Level OptLevel);
+  virtual bool addPreEmitPass(PassManagerBase &PM, CodeGenOpt::Level OptLevel);
 }; // MSP430TargetMachine.
 
 } // end namespace llvm