llvm-project

69b39e7c - [SelectionDAG] Add support for extending masked loads in computeKnownBits (#115450)

[SelectionDAG] Add support for extending masked loads in computeKnownBits (#115450) We already support computing known bits for extending loads, but not for masked loads. For now I've only added support for zero-extends because that's the only thing currently tested. Even when the passthru value is poison we still know the top X bits are zero.