Hi,
I am not sure if this message is still relevant. Anyhow, I think following another built-in under zero_arg_builtins ("__builtin_alpha_rpcc" in alpha.c for example) could help in finding the missing part in this implementation.
the message is still relevant. I tried to use as example the currently existing intrinsics. But there is something that I miss. For example, CODE_FOR_* constants/variables (pointer to function) are supposed to be defined in some source file but I couldn't find where. At compile time I got an error that it is not defined. I suppose that when GCC is being compiled some automatic code generation happens (from machine descriptors) that defines these CODE_FOR_* variables. Revital, thanks for the comment. Ferad