Yay! I'm so excited to use the `async` methods in production with MySQL. The biggest bottleneck for our PHP apps can now have a workaround in some cases, that's brilliant.
> Integration of LLVM as a further optimization step to make the hottest code run even faster on HHVM.
These multistage JITs are absolutely fascinating, I believe Safari is doing something similar with Javascript. Intuitively I would've assumed the overhead of firing up yet another JIT and VM to run it on would make it not worth it, but I guess the instructions currently generated are so far off optimal that it is worth doing.
EDIT: Anyone know of any papers regarding multi-stage JITs that I can check out?
> Integration of LLVM as a further optimization step to make the hottest code run even faster on HHVM.
These multistage JITs are absolutely fascinating, I believe Safari is doing something similar with Javascript. Intuitively I would've assumed the overhead of firing up yet another JIT and VM to run it on would make it not worth it, but I guess the instructions currently generated are so far off optimal that it is worth doing.
EDIT: Anyone know of any papers regarding multi-stage JITs that I can check out?