This is okay, but gpc_reg_operand in predicates.md needs something better than a magic "64" constant in the test. Should this be a comment or a new symbolic value related the max/last FPR or number of general registers?
The test assumes a lot about the relative ordering of the various regnos (like most of the predicates). In my opinion a literal here is better than testing with some in fact unrelated macro. All these predicates could use a cleanup, bring them into the 21st century. I didn't really feel like doing that though. I'll add a comment. Segher
