A. Since --compile=min works (even as of 1.6, and I guess all versions since 1.0) and can be MUCH faster (for loading code), show it!

Is there a reason it's undocumented? Are some of of the options dangerous, or other reason undocumented? I believe they are "yes", "no", and "min", and if I recall for pre-1.0 "min" could crash?

B. As with Jeff's new selective lowered optimization trick, being able to get the above option that way would be nice. I'm not sure if that's an easy change, while even I could make a PR for A. unless it's not wanted.

C. Letting the user choose for the new opt option and/or possible B. would be nice, as e.g. @lowopt using Module and even better if possible more granularity, i.e. for functions (loops?).