Thanks, now I know that LLInt (the new interpreter) was written by Filip Pizlo. Note that you mention him in the article only related to DFG JIT. I didn't try to investigate the source files or checkins, I tried to understand only what you write, and that was obviously not clear enough.

I hope you see that I'm interested in the topic but read about it the first time. I hope you also can imagine that there are more readers like me. And they would benefit from the correct summary too.

Please do write what else I misunderstood, that is exactly the reason why I wrote the short summary, to get the feedback, not to claim that I understand more than you or any insider. It's short, counting the words some 20 times shorter than your article, so I hope it wouldn't be hard for you to point to any other inconsistency. Summarizing helps if the result is something relevant and clear, in a few sentences instead of 1700 words. Without the summary, the most important points can be overlooked/misunderstood by anybody not "close to the sources."