felipepiovezan wrote: > > > > > do we have in mind any other languages that will implement this? > > > > > > > > > > > > I suspect any language wanting to implement this notion of function > > > > splitting (e.g. all the users of corosplitter) and virtual frames could > > > > have a use for this > > > > > > > > > We already have `.cold` functions that do this in clang. Might be nice to > > > support that on the llvm side so this could be testable here. > > > > > > There are two things that confuse me about this idea: > > > > * I thought `.cold` functions came from the hot-cold-split pass, not from > > Clang? > > I was speaking loosely, meaning "in the llvm.org not the swift fork of > llvm-project (and thus testable there). We'd have to decide which runtime > this would go in, maybe we need an "assembly language" or a general fallback > runtime for this? > > > * Don't those create a new frame on the stack, i.e. a new CFA? > > I don't remember whether they push a frame or tail call.
I looked at the code that creates `.cold` functions, and it doesn't seem to tail call, creating a new frame instead (at least the `.ll` tests have no `musttail` attribute in those functions). Maybe some C++-specific construct that could go through the C++ language plugin? I tried their coroutines, but the IR generated wasn't very promising either and TTTT I'm not familiar with how they are compiled. https://github.com/llvm/llvm-project/pull/112720 _______________________________________________ lldb-commits mailing list lldb-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
