[mips] Rename Filler to MipsDelaySlotFiller and initialize the pass

llvm-svn: 332102
diff --git a/llvm/lib/Target/Mips/MipsTargetMachine.cpp b/llvm/lib/Target/Mips/MipsTargetMachine.cpp
index a66aae6..77f43a2 100644
--- a/llvm/lib/Target/Mips/MipsTargetMachine.cpp
+++ b/llvm/lib/Target/Mips/MipsTargetMachine.cpp
@@ -53,6 +53,7 @@
 
   PassRegistry *PR = PassRegistry::getPassRegistry();
   initializeGlobalISel(*PR);
+  initializeMipsDelaySlotFillerPass(*PR);
 }
 
 static std::string computeDataLayout(const Triple &TT, StringRef CPU,