Expand for ROTR with MVT::i64.

Dale, Could you please review this?

llvm-svn: 55581
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index ea8da9d..852d7d3 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -125,6 +125,7 @@
   
   // PowerPC does not have ROTR
   setOperationAction(ISD::ROTR, MVT::i32   , Expand);
+  setOperationAction(ISD::ROTR, MVT::i64   , Expand);
   
   // PowerPC does not have Select
   setOperationAction(ISD::SELECT, MVT::i32, Expand);