[llvm] [X86] SimplifyDemandedBitsForTargetNode - add handling for X86ISD::FAND/FOR (PR #136618)

[Phoebe Wang via llvm-commits]

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@@ -44147,6 +44153,55 @@ bool X86TargetLowering::SimplifyDemandedBitsForTargetNode(
     Known.Zero |= Known2.One;
     break;
   }
+  case X86ISD::FAND: {
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phoebewang wrote:

Why there's no X86ISD::AND/OR in this function?

https://github.com/llvm/llvm-project/pull/136618