[Bug rtl-optimization/57462] ira-costs considers only a single register at a time

[josh.m.conner at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57462

--- Comment #2 from Joshua Conner <josh.m.conner at gmail dot com> ---
No problem - I appreciate you taking the time to respond.  This has a
noticeable impact on codegen for ARM because of the redundancy in the CPU/FPU
functionality and cost of transferring data between integer/FP registers, so I
thought it would be worth mentioning in case it wasn't recognized already. 
Thanks.