> On Tue, May 31, 2011 at 10:39 PM, Corey <[email protected]> wrote: > > data in "unused" bits in a pointer? Even I know that's a bad idea. Is it > > really that important to run your Javascript 2% faster? > > The difference is quite a bit more than 2%. The technique is sound, > imo, but it seems the implementations are lacking some safeguards.
The implementations are forcing OS developers to remove safeguards from our kernels. google MAP_32BIT Go see what linux and other systems do with the "hint" argument to mmap(), regarding address space randomization. Go read some of these implementations to see how often they pass a non-NULL hint. I'm so glad we have more performance in the most dangerous applications....
