Add code enough for emission of reg-reg and reg-imm moves. This allows us to compile "ret i16 0" properly!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70710 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/MSP430/MSP430ISelLowering.cpp b/lib/Target/MSP430/MSP430ISelLowering.cpp
index 7577a53..c4b3993 100644
--- a/lib/Target/MSP430/MSP430ISelLowering.cpp
+++ b/lib/Target/MSP430/MSP430ISelLowering.cpp
@@ -39,7 +39,7 @@
   TargetLowering(tm), Subtarget(*tm.getSubtargetImpl()), TM(tm) {
 
   // Set up the register classes.
-  addRegisterClass(MVT::i16, MSP430::MSP430RegsRegisterClass);
+  addRegisterClass(MVT::i16, MSP430::GR16RegisterClass);
 
   // Compute derived properties from the register classes
   computeRegisterProperties();
@@ -111,7 +111,7 @@
         abort();
       case MVT::i16:
         unsigned VReg =
-          RegInfo.createVirtualRegister(MSP430::MSP430RegsRegisterClass);
+          RegInfo.createVirtualRegister(MSP430::GR16RegisterClass);
         RegInfo.addLiveIn(VA.getLocReg(), VReg);
         SDValue ArgValue = DAG.getCopyFromReg(Root, dl, VReg, RegVT);