[llvm] [NVPTX] Fix lowering of i1 SETCC (PR #115035)

[Justin Fargnoli via llvm-commits]

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@@ -668,6 +668,11 @@ NVPTXTargetLowering::NVPTXTargetLowering(const NVPTXTargetMachine &TM,
     setTruncStoreAction(VT, MVT::i1, Expand);
   }
 
+  setCondCodeAction({ISD::SETNE, ISD::SETEQ, ISD::SETUGE, ISD::SETULE,
+                     ISD::SETUGT, ISD::SETULT, ISD::SETGT, ISD::SETLT,
+                     ISD::SETGE, ISD::SETLE},
+                    MVT::i1, Custom);
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justinfargnoli wrote:

If it doesn't work out of the box, should we instead expand the implementation of [`TLI.LegalizeSetCCCondCode()`](https://github.com/llvm/llvm-project/blob/dd1c99bac4dc1d5ceeadc79dd31fa12f3e615f18/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp#L11853-L11983)?

https://github.com/llvm/llvm-project/pull/115035