The `add`, `sub`, and `xor` wave reduction intrinsics cannot be constant folded, as `add` and `sub` need to be multipled by the number of active lanes, and `xor` depends on the parity of the number of active lanes.
The `add`, `sub`, and `xor` wave reduction intrinsics cannot be constant folded, as `add` and `sub` need to be multipled by the number of active lanes, and `xor` depends on the parity of the number of active lanes.