Slow compile time for "func blurred(withRadius radius: CGFloat) -> Image"

[bes]

Hi,

The Kingfisher project has previously solved issues with slow compile times (#467, #468), so I am posting this in the hopes of you being able to solve this new one that I am seeing since recently upgrading to the latest version (3.5.0 / 5cfa0dd):

1763.4ms        .../Pods/Kingfisher/Sources/Image.swift:442:17   public final func blurred(withRadius radius: CGFloat) -> Image
1761.1ms        .../Pods/Kingfisher/Sources/Image.swift:442:17   public final func blurred(withRadius radius: CGFloat) -> Image

CC @frankrausch @onevcat

Thanks, BR, Erik

[frankrausch]

Do you remember which version you had before? That would make it easier to isolate the problem.

I took a quick look at the blurred function but didn’t see anything suspicious (like a complex equation in one line).

[bes]

This is showing up since upgrading from 3.3.3, but I can't see any changes in blurred between those versions. Right now blurred is the function that takes the longest time to compile in our project (according to -debug-time-function-bodies), but I can't say how accurate that is...

I am coming from 7 years of Android development, and I must say the iOS tool chain is quite bad compared to anything Java / Android related.

[onevcat]

Should be fixed in #613

It took me about 2000ms before. And now 100ms.

[bes]

Thank you!

[frankrausch]

Amazing! Still unbelievable that splitting the statement into 3 lines makes such a huge compile time difference.