Cleanup Mips code and rename some variables. Patch by Jack Carter

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147383 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsCodeEmitter.cpp b/lib/Target/Mips/MipsCodeEmitter.cpp
index fd768f2..2d0d6a2 100644
--- a/lib/Target/Mips/MipsCodeEmitter.cpp
+++ b/lib/Target/Mips/MipsCodeEmitter.cpp
@@ -216,7 +216,7 @@
 unsigned MipsCodeEmitter::getMachineOpValue(const MachineInstr &MI,
                                             const MachineOperand &MO) const {
   if (MO.isReg())
-    return MipsRegisterInfo::getRegisterNumbering(MO.getReg());
+    return getMipsRegisterNumbering(MO.getReg());
   else if (MO.isImm())
     return static_cast<unsigned>(MO.getImm());
   else if (MO.isGlobal()) {