Piotr and I have some questions regarding so called PIR What kotlinlang #python-contributors

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Title

s

SerVB

09/10/2021, 6:55 PM

Piotr and I have some questions regarding so called "PIR": What is it? Is it safe to disable it? I see disabling it doesn't spoil anything visible. Only

out-pir

dir stops to be generated during box testing

👍 1

p

Piotr Krzemiński

09/10/2021, 7:11 PM

And a follow-up question: how does it relate to our Python backend? :)

this gave me some clue:

val generatePir by generator("org.jetbrains.kotlin.ir.persistentIrGenerator.MainKt", mainSourceSet)

PIR = Persistent IR? I understand "persistent" as something that can be persisted aka. serialized and stored somewhere

🙃 1

@dmitriy.novozhilov could you help here?

d

dmitriy.novozhilov

09/15/2021, 9:19 AM

Actually I don't know nothing about it. Maybe @udalov can help?

u

udalov

09/15/2021, 3:30 PM

Yes, it’s the persistent IR, which can be used to get a view of any declaration at a time of any lowering. It’s used to implement incremental compilation support in JS IR backend. It’s not used in JVM, and I think it’s not used in Native.

:thank-you: 2

s

SerVB

09/15/2021, 3:34 PM

Thank you! So I guess it's save to disable it for now in Python box tests

👍 1

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