> On 6 Dec 2017, at 16:12, Claes Redestad <claes.redes...@oracle.com> wrote: >> >> and i do not understand why the field size is not declared @Stable anymore, >> ok, it can be equals to zero, but in that case the JIT will emit a move >> so it's better than always asking for a move (or i do not understand the >> semantics of @Stable ?) > > Hmm, I'm under the impression @Stable brings no additional value to a final > non-array fields (definitely important for arrays). >
It can, since final fields are not treated as really final (unless in java.lang.invoke package, where it’s as if all such fields are annotated with @Stable). C2 will treat the field value a constant value if the collection is held in a static final field. Paul. > I might have been guilty of adding @Stable to more fields than necessary in > these implementations in the first place. I've > reverted this removal and will add a note to investigate separately if we can > more systematically clean them up. > > http://cr.openjdk.java.net/~redestad/8193128/open.01/ > > Thanks! > > /Claes
