[llvm] [DAG] ISD::matchUnaryPredicate / matchUnaryFpPredicate / matchBinaryPredicate - add DemandedElts variant (PR #183013)

[Simon Pilgrim via llvm-commits]

================
@@ -361,7 +361,11 @@ bool ISD::matchUnaryPredicateImpl(SDValue Op,
     return false;
 
   EVT SVT = Op.getValueType().getScalarType();
+  bool IsSplat = ISD::SPLAT_VECTOR == Op.getOpcode();
----------------
RKSimon wrote:

Yes return true - cheers

https://github.com/llvm/llvm-project/pull/183013