On 07/09/2010 07:18 PM, Joe Vee wrote: > > > > Can somebody give me any pointers about implementing intrinsic > functions for a new processor (functions that expand to a single > assembly instruction) in GCC? What are the steps involved and is > there any documentation on how to do this? There's a ton of examples: just have a look at the way things like expand_sync_lock_test_and_set are handled, for instance. Have a look at builtins.c. But you can trivially do the job with an inline asm in a header file in almost all cases, so I don't really understand why you want to submit to the pain of defining a new intrinsic. Andrew.
