On Fri, 5 Sept 2025 at 20:00, Stuart Marks <stuart.ma...@oracle.com> wrote: > What's the connection between Map.of()'s randomized encounter order and > StableValue > or the JIT's ability to constant-fold? Are you observing that randomized > encounter > order precludes constant folding? Or are you saying that something should > change > near the (preview) StableValue.map() API? For example, that it should specify > a > particular encounter order, or that its API signature should change?
The recent JVMLS talk indicated that a StableValue needs to be rooted in a field that the JVM can trust does not change (so that constant folding can occur). This includes static fields, record fields, method references, and List.of()/Map.of(). As such, the connection between the randomized order and StableValue is that more devs are going to be pushed to use Map.of(). (unless I misunderstand, StableValue.map() cannot be used to create an ordered map) Stephen
