> > > Hi Guys, > > > > > > A quick question: is it possible to enable AVX2/AVX3 in PHP JIT > generated > > > code, and hence can get some performance improvement? > > > Just check the community first: if anyone has already tried that or > got > > > some experiences? before we dive into this investigation. > > > We are discussing if we could get some extra performance via new > AVX > > > instructions in PHP program execution. > > > > > > Thanks. > > > > > > > AVX3 might be too new to just flat out generate for it. But > > It can be quite simple for the JIT compiler to be aware of what > > features flags are enabled on a CPU and generate compatible > > instructions that will run on that CPU. > > > > it is not really new, however the gain for most cases are not necessarily > significant but for specific cases. > > For most usages in php, at a request level, the gain will be barely > measurable. > > Also for latest avx, most hosting servers won't have them anyway. > > I would think some specific APIs to prepare specific data to be > processed > using the best available runtime intrinsics would bring much more than > in > JIT. > > As a sidenote, most libraries used by php, where larger intrinsics > vectors > bring something, implement them already. > > > best, > Pierre >
Thanks Pierre and tag? (apologize if I take your name wrongly) for the hint and information. We will carefully think about them... So far, we are still in early investigation stage and would like to hear opinions and ideas from our community. Best, Tony Su
