Profile specific part of code (feature?)

Hi,

I would love to see a feature that would do roughly the following:

- you feed it a GIT commit ID / TFS commit ID etc.

- run a profiler session

- you get a result either specifically for that part of code or a highlighted / easy to access "subresult", in an ideal scenario as a comparison to previous state (before the commit)

Thing is, if I write a new method, it's not difficult to find it in the result. But if I'm developing a feature in a complex project that involves multiple parts of an NLayered codebase, it's virtually impossible to reasonably determine whether some of my modifications hurt performance somewhere outside of my feature.

P.