Ian Lance Taylor writes: > Andrew Haley <[EMAIL PROTECTED]> writes: > > > Yes. You'll need to represent virtual function calls at the GIMPLE > > level, or to keep track of which calls are associated with which > > methods. This is key to getting IPA to work. > > > > It should be fairly easy, given a class and a vtable offset, to find > > the method. This will require a callback into the front end. > > But note that IPA via LTO is not going to permit callbacks into the > front end, because there isn't going to be a front end. So the > information needs to be represented in GIMPLE somewhere.
I understand, but (IIRC) every time this has come up there has been some disagreement: I remember it being said that GIMPLE wasn't supposed to represent abstractions such as virtual methods. I may be misremembering! Anyway, a front end callback is surely good enought for a proof of concept. Andrew.
