[llvm] [X86] Fold splat AND on VGF2P8AFFINEQB source (PR #193364)

[Simon Pilgrim via llvm-commits]

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@@ -62138,6 +62138,62 @@ static SDValue combineKSHIFT(SDNode *N, SelectionDAG &DAG,
   return SDValue();
 }
 
+static SDValue combineAndOnGF2P8AFFINEQBOperand(SDNode *N, const SDLoc &DL,
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RKSimon wrote:

Brief title comment describing the fold

https://github.com/llvm/llvm-project/pull/193364