I heard that having R8 disabled will have a significant impact on Compose Render time. I was just re...

# compose

[Susheel]

I heard that having R8 disabled will have a significant impact on Compose Render time. I was just reading this article about it. I was just wondering if Google recommends to enable R8 for compose?

[Adam Powell]

Yes, we recommend enabling r8

[Kirill Rozov]

Does R8 have specific optimizations for Compose?

[Adam Powell]

no, but many of its general-purpose optimizations are very helpful for compose

[Adam Powell]

lambda-heavy code in particular tends to benefit quite a bit

[Adam Powell]

not to mention it will omit a lot of unused code; any parts of the compose libraries themselves that you aren't using, any @Preview functions and associated utilities that you may have in your existing source files...

[Stylianos Gakis]

Is stripping @Preview composables a specific optimization or just due to the fact that they're not called explicitly? What if we do call them from somewhere, they're not stripped then right?
What if a library uses them, like showkase uses them from the generated code 🤔

[Adam Powell]

the result of not being called explicitly. If you generate code that calls them, that will still work.