[X86] canonicalizeShuffleWithBinOps - add TODO for X86ISD::ANDNP bitwise handling

Its just as safe to move shuffles across X86ISD::ANDNP as any other logical bitop, they just tend to appear too late to matter.

Noticed while triaging D127115 regressions.

Author: RKSimon

llvm/lib/Target/X86/X86ISelLowering.cpp

@@ -39186,6 +39186,7 @@ static SDValue canonicalizeShuffleWithBinOps(SDValue N, SelectionDAG &DAG,
   auto IsSafeToMoveShuffle = [ShuffleVT](SDValue Op, unsigned BinOp) {
     // Ensure we only shuffle whole vector src elements, unless its a logical
     // binops where we can more aggressively move shuffles from dst to src.
+    // TODO: Add X86ISD::ANDNP handling with test coverage.
     return BinOp == ISD::AND || BinOp == ISD::OR || BinOp == ISD::XOR ||
            (Op.getScalarValueSizeInBits() <= ShuffleVT.getScalarSizeInBits());
   };