Updates for JVM/IR atomicfu compiler plugin #322
Description
The following updates in the JVM/IR plugin are coming in 1.9.20:
- Lots of refactoring with preparation for K/N support (Atomicfu compiler plugin for native #261): commonization of transformations.
- Improved error handling (checks for visibility constraints, appending message about usage constraints in case of an error).
- Explicit requirements for the visibility of atomic properties: to prevent leaking they should be private/internal or be members of private/internal classes.
- Fixed visibility of generated properties: volatile properties are always private and atomic updaters have the same visibility as the original atomic property.
- Volatile fields are generated from scratch and original atomic properties are removed.
- Delegated properties support is fixed (only declaration in the same scope is allowed).
- Non-inline atomic extensions are forbidden.
- For top-level atomics: only one wrapper class per file (with corresponding visibility) is generated.
- Bug fixes.
All the changes are here: KT-MR-10579
YT issue (necessary because changes are merged in Kotlin master): KT-60528