add final result to worklist

Author: ParkHanbum

llvm/lib/Transforms/Vectorize/VectorCombine.cpp

@@ -1946,6 +1946,7 @@ bool VectorCombine::foldShuffleOfSelects(Instruction &I) {
   Value *ShuffleFalse = Builder.CreateShuffleVector(F1, F2, Mask);
   Value *NewShuf = Builder.CreateSelect(ShuffleCmp, ShuffleTrue, ShuffleFalse);
 
+  Worklist.pushValue(NewShuf);
   replaceValue(I, *NewShuf);
   return true;
 }