Re: [RFC] JIT

On Thu, 31 Jan 2019, Dmitry Stogov wrote: > > > On 1/31/19 8:08 PM, Derick Rethans wrote: > > On Thu, 31 Jan 2019, Dmitry Stogov wrote: > > > >> I'm glad to finally propose including JIT into PHP. > >> > >> https://wiki.php.net/rfc/jit > > > > I don't see anywhere in this RFC how it would affect thigns that do > > sneaky things with internals, such as Xdebug. How is that going to be > > affected? > > > > I suppose Xdebug should work on non-JIT-ed versions of the functions. > Even JVM deoptimizes to bytecode when debugging. So, in that case, I think I would need to be able to instruct the PHP JIT engine to be turned off. Perhaps through an API? Similarly, I think it might be useful for OPcache as well, as I am getting more people confused why some breakpoints don't work, or variables don't exist: https://bugs.xdebug.org/view.php?id=1609 cheers, Derick