llvm-project

9a354fc5 - [SelectionDAG] Use `KnownBits` to determine if an operand may be NaN. (#188606)

[SelectionDAG] Use `KnownBits` to determine if an operand may be NaN. (#188606) Given a bitcast into a fp type, use the known bits of the operand to infer whether the resulting value can never be NaN.