Thanks Charles and Steve. Now that I am becoming a more experience assembler programmer, I have wondered if I should be greatly concerned about instruction timings or pipeline order, or just simply focus on readability and maintenance. Especially since assembler programming is becoming a dying art. I think I am only 1 of a handful of assembler programmers at my shop with hundreds of mainframe programmers! I think you both answered my question. Thanks!
Thank you, Brian Chapman On Tue, Aug 13, 2019 at 11:39 AM Steve Smith <sasd...@gmail.com> wrote: > Write good code and forget about instruction timings. With any luck your > code will have to perform on several generations of architecture and > machines. > > There's a big difference between B- (base-index-displacement) branches and > J- (or BR-) (relative address) instructions. Surely by now, this should go > without saying. Regardless of whether they're "faster" or not, they are > much better, and as that is well-documented, I won't belabor it. > > sas > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
