Xcode 8.0 Swift 3.0 slow indexing and building

Question

I\'ve installed Xcode 8.0 and converted Swift 2.2 to 3.0 (that process also took a lot of time, I just left my Mac running all night). I have not a big project (about 20 fil

Answer 1

After add the setting,

SWIFT_WHOLE_MODULE_OPTIMIZATION = YES

our project clean-build compile times from 1200s to 180s for 650 swift files. But this will cause increase compile fail. Every change need 180s to compile when increase compile only need 60s