[XOR’ing a register with itself is the idiom for zeroing it out. Why not sub?](https://devblogs.microsoft.com/oldnewthing/20260421-00/?p=112247)
 ## [XOR'ing a register with itself is the idiom for zeroing it out. Why not sub?](https://devblogs.microsoft.com/oldnewthing/20260421-00/?p=112247) *





