llvm

9c06c10f - [SelectionDAG] GetDemandedBits - fallback to SimplifyMultipleUseDemandedBits by default.

[SelectionDAG] GetDemandedBits - fallback to SimplifyMultipleUseDemandedBits by default. First step towards removing SelectionDAG::GetDemandedBits entirely since it so similar to SimplifyMultipleUseDemandedBits anyhow.