Andrei Alexandrescu: > It all depends on what the largest payload is. One of my apps' largest > structures was a hash, which was almost twice as large in the 64-bit > version.
Some of that extra space is used by the pointers that are twice larger. The latest JavaVM are able to compress pointers in some situations, this can contain some info: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.97.8725 The main LLVM designer has studied that in C-like languages too, such ideas can be usable in D too: http://llvm.org/pubs/2005-06-12-MSP-PointerComp.html If you are interested in this, you can find more papers, with examples, benchmarks, etc. Bye, bearophile
