[SR-11744] Decrease Swift Runtime Size (for use on embedded devices)

[swift-ci]

Previous ID	SR-11744
Radar	None
Original Reporter	allright (JIRA User)
Type	Improvement

Attachment: Download

Additional Detail from JIRA

Votes	3
Component/s	Foundation, Standard Library
Labels	Improvement, CodeSize, Performance
Assignee	None
Priority	Medium

md5: a854b179881f306ef61ed6d148fea3b9

Issue Description:

Too big size of:

libicudataswift.so (26.9 Mb)

libFoundation.so (13.2 Mb)

It is possible to use Swift on Android native level(under JNI) for cross-platform business-logic, and some middle-level UI code (ViewModels & etc) (MVVM pattern).

But it dramatically increase Android App Size.

But in comparison with C++, it is too big libraries size.

Is it possible to decrease, or to make special "embedded" version of swift RunTime?

Is it possible to compile for different ARM processors?

Is it possible to remove some unneeded parts while building library?

Is it possible to remove some safety code from Swift libraries, to decrease the size?

Also may be a good decision will be to use static libraries for embedded use.

Example project is Readdle:

https://blog.readdle.com/why-we-use-swift-for-android-db449feeacaf

[finagolfin]

This is significantly reduced since the libicu dependency of the standard library was removed last month:

swiftlang/swift#40340

[Kyle-Ye]

This is significantly reduced since the libicu dependency of the standard library was removed last month:

apple/swift#40340

Too big size of:
libicudataswift.so (26.9 Mb)
libFoundation.so (13.2 Mb)

Hi @buttaface , would you like to share the reduced size here?

And after that PR, would this still be a issue worth tracking on?

[finagolfin]

Hi @buttaface , would you like to share the reduced size here?

I reported last year that that change reduced the size of a statically-linked "hello world" Swift executable by ~80%.

And after that PR, would this still be a issue worth tracking on?

It depends on whether the person who raised all these issues still needs some of those addressed.

[Kyle-Ye]

Hello @allright (assume you were the one originally raised the issue)

Are you satisfied with the current status and do you think this still is an issue for you?