On Tue, Oct 16, 2012 at 8:14 AM, Jan Hubicka <hubi...@ucw.cz> wrote: > this patch udpates go-frontend to deifine unreachable bultin I need for loop > and LTO optimizations. I also noticed that GO ignores existence of all flags > except for CONST and thus I synchronized the flags with C FE variants.
I can't see how it makes sense to have to change the frontends in order to be able to generate calls to a builtin function in the middle-end. Builtin functions used by the middle-end should be defined by the middle-end, without any effort required on the part of the frontend. The frontend should only need to define functions that might appear in the language that the frontend is compiling. In other words, why not just have the middle-end call add_builtin_function as required? I see that some builtin functions are already added by the middle-end in build_common_builtin_nodes. Ian
