Make psuedo FEXT_T8I816_ins into a custom emitter.

llvm-svn: 176002
diff --git a/llvm/lib/Target/Mips/MipsISelLowering.h b/llvm/lib/Target/Mips/MipsISelLowering.h
index ac05c83..2d1e9a9 100644
--- a/llvm/lib/Target/Mips/MipsISelLowering.h
+++ b/llvm/lib/Target/Mips/MipsISelLowering.h
@@ -416,6 +416,9 @@
     MachineBasicBlock *EmitFEXT_T8I816_ins(unsigned BtOpc, unsigned CmpOpc,
                                MachineInstr *MI,
                                MachineBasicBlock *BB) const;
+    MachineBasicBlock *EmitFEXT_T8I8I16_ins(
+      unsigned BtOpc, unsigned CmpiOpc, unsigned CmpiXOpc,
+      MachineInstr *MI,  MachineBasicBlock *BB) const;
   };
 }