[swift-dev] Swift incremental compile profiling

[Samantha John]

I have a large project (308 swift files, 441 objective c, 66k lines of
code) where incremental builds can be extremely slow. I'm trying to do some
profiling to figure out what type of things cause large scale recompiles.
The problem is that I can't find a good way of telling which files get
recompiled on an incremental build and which do not. It seems like files
that are not recompiled still get listed in xcode, but the compiler just
passes over them really fast.

Does anyone know if xctool or xcodebuild has this type of functionality? Or
is there some other way to get this info?

Thank you,
Sam
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