How do I know if my build really uses the JVM IR c...

# compiler

[Marc Knaup]

How do I know if my build really uses the JVM IR compiler?
I’ve compiled so many libraries without any issues that I’m skeptical that my JVM IR setup is correct 😄

[Marc Knaup]

I checked for now by intentionally running into known IR compiler crashes 🙂

[Karlo Lozovina]

I've found out kotlinOptions.useIR = true definitely works because compiling my main code with it and tests without it doesn't work 😄

[Karlo Lozovina]

So it's doing something...

[Marc Knaup]

Yeah but it also depends on what tasks you set these options on 🙂

[wasyl]

Yeah I added some prints to the Gradle tasks that were configuring Kotlin tasks to make sure they’re called as expected. The first time out I actually didn’t configure it properly 😕

[wasyl]

And then I found a bug triggered by the IR, that made me 100% confident the setup is correct 😄 So I +1 that way of verifying 🙂

[Karlo Lozovina]

That's the way to verify if your spelchecker is working 😄

[udalov]

Take a look at the value of xi in the @Metadata annotation on any compiled class file. With 1.4.30, if it's 48 or 50, it means it's compiled with JVM IR. :)

(More details: https://kotlinlang.slack.com/archives/C7L3JB43G/p1598385937027400?thread_ts=1598382471.026600&cid=C7L3JB43G)

[Marc Knaup]

Interesting, thanks 😀