Fix inconsistent usage of PALIGN and PALIGNR when referring to the same instruction.

llvm-svn: 173667
diff --git a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp
index 9694808..b490f27 100644
--- a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp
+++ b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp
@@ -61,7 +61,8 @@
     ShuffleMask.push_back(NElts+i);
 }
 
-void DecodePALIGNMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask) {
+void DecodePALIGNRMask(MVT VT, unsigned Imm,
+                       SmallVectorImpl<int> &ShuffleMask) {
   unsigned NumElts = VT.getVectorNumElements();
   unsigned Offset = Imm * (VT.getVectorElementType().getSizeInBits() / 8);