[mips] Initialize the long branch pass for testing purposes

llvm-svn: 332172
diff --git a/llvm/lib/Target/Mips/MipsTargetMachine.cpp b/llvm/lib/Target/Mips/MipsTargetMachine.cpp
index 77f43a2..2b9ac2c 100644
--- a/llvm/lib/Target/Mips/MipsTargetMachine.cpp
+++ b/llvm/lib/Target/Mips/MipsTargetMachine.cpp
@@ -54,6 +54,7 @@
   PassRegistry *PR = PassRegistry::getPassRegistry();
   initializeGlobalISel(*PR);
   initializeMipsDelaySlotFillerPass(*PR);
+  initializeMipsLongBranchPass(*PR);
 }
 
 static std::string computeDataLayout(const Triple &TT, StringRef CPU,