Hi Phi, > On a 64bits system, how an ILP64 (or LP64) compiled application can be > sure that returned addr from the operating system can be squeezed? In java you can limit the amount of RAM which may be allocated for a single JVM instance, and allocations are aligned on 2-word boundries. Yes, they have to do a bit of encoding/decoding but for typical java applications speedups of 5-25% are not uncommon, - Clemens
