Re: About optimization for compiler

On Fri, 27 Feb 2015, Xinchen Hui wrote: > Hey Internals: > > I was looking Bob's switch optimization.. > > then I start to worry about where is the place optimization should goes.. > > in generally, PHP is a interpreted language. IMO, it should > compiler the PHP codes to opcode without any optimization(of course, > we did some, but they won't change a lots of opcodes which should be > generated).. > > and, since 5.5, we already have opcache bundled in.. > > thus, I am proposing a principle, that is: > > in the future, we only do optimization in opcache side, and keep > Zend Compiler without any optimization... considering Zend Compiler do > things in -O0. > > since, optimization always are dangerous.. if we only do them in > opcache, user can still run them codes with disable opcache, or at > least disable some optimization level which cause that.. > > what do you think? I think it's a very sensible approach. I would however like to see this sort of 'experimental' optimisations to be also possible through an extension. I think some of Sara's? AST hooks might help here? cheers, Derick