Bug report

Bug description:

With the addition of cold exits, the "optimized trace length" histogram now includes the exit count + the optimized trace length.

While this is a useful metric for the overall executor size, it's no longer useful to see the amount of instructions that the optimizer was able to remove from the hot path.

I would suppose we break this out into two stats: the optimized trace length and the exit count.

Does this make sense, @markshannon?

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux

Linked PRs

• gh-116808: Fix optimized trace length histogram #116827