[llvm] [NVPTX] Add SimplifyDemandedBitsForTargetNode for PRMT (PR #149395)

[Alex MacLean via llvm-commits]

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@@ -6544,4 +6544,101 @@ void NVPTXTargetLowering::computeKnownBitsForTargetNode(
   default:
     break;
   }
-}
\ No newline at end of file
+}
+
+static void getPRMTDemandedBits(const APInt &SelectorVal,
+                                const APInt &DemandedBits, APInt &DemandedLHS,
+                                APInt &DemandedRHS) {
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AlexMaclean wrote:

Fixed

https://github.com/llvm/llvm-project/pull/149395