llvm-project

96336b23 - [AggressiveInstCombine] Improve popcount matching if the input has known zero bits (#142501)

[AggressiveInstCombine] Improve popcount matching if the input has known zero bits (#142501) If the input has known zero bits, InstCombine may have simplied one of the expected And masks. Teach AggressiveInstCombine to use MaskedValueIsZero to recover these missing bits. Fixes #142042.