Patch to fix a crash in the PowerPC back end due to ISD::ROTL and ISD::ROTR
not being expanded. Test case included.

llvm-svn: 254501
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 72a3fbe..176a8b3 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -479,6 +479,8 @@
       setOperationAction(ISD::CTTZ_ZERO_UNDEF, VT, Expand);
       setOperationAction(ISD::VSELECT, VT, Expand);
       setOperationAction(ISD::SIGN_EXTEND_INREG, VT, Expand);
+      setOperationAction(ISD::ROTL, VT, Expand);
+      setOperationAction(ISD::ROTR, VT, Expand);
 
       for (MVT InnerVT : MVT::vector_valuetypes()) {
         setTruncStoreAction(VT, InnerVT, Expand);