Feng LI <nemoking...@gmail.com> writes: > Yes, you are right. But how could I reference to a backend defined builtin > function in the middle end (I need to generate the builtin function in the > middle end and expand it in x86 backend)?
If the function doesn't have a machine-independent definition, then use a target hook. (That said I've thought for a while that we need better mechanisms for target-specific optimization passes. If we had those I would tell you to write one. E.g., reg-stack.c is a target-specific pass.) Ian
