>> But I don't think offering the -mvec-elide-x0 option is beneficial. >> I'd just enable this change unconditionally. Or, in the unlikely >> event there's a uarch that benefits from the old code generation, this >> would be better handled as a consequence of -mtune than as a new >> top-level option. I aggree with Andrew. I think the change should be unconditional instead of providing -mvec-elide-x0 option.
Thanks. juzhe.zh...@rivai.ai