[llvm] [X86] computeKnownBitsForTargetNode - extend X86ISD::BZHI handling. Fixes 177364. (PR #179444)

[Simon Pilgrim via llvm-commits]

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@@ -39306,6 +39298,21 @@ void X86TargetLowering::computeKnownBitsForTargetNode(const SDValue Op,
       }
     }
 
+    APInt MaskMinValue = Known2.getMinValue();
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RKSimon wrote:

Comments?

https://github.com/llvm/llvm-project/pull/179444