llvm-project

9a91c50a - [DAG] isKnownNeverZero - add DemandedElts argument (#182679)

[DAG] isKnownNeverZero - add DemandedElts argument (#182679) Following changes were made for isKnownNeverZero : - Added BUILDVECTOR and SPLATVECTOR cases. - Added support for DemandedElts arguments for SELECT/VSELECT cases. - Added tests for constants and SELECT/VSELECT. Closes #181656