XOR'ing a register with itself is the idiom for zeroing it out. Why not sub?

Related Stories

• To fix this Wi-Fi network, we'll need a crane
• DeepSeek v4
• SAP reports Q1 revenue up 6% YoY to €9.56B, vs. €9.53B est., non-IFRS operating profit up 17% to €2.87B, cloud revenue up 19% to €5.96B; SAP up 10%+ after hours
• We still don't have a more precise value for "Big G"
• How the Tech World Turned Evil