I have always used 'immediate' instructions (AHI etc.) when possible, as they are embedded in the instruction code and need no data fetches from L2 cache.
On 13/08/2019 01:48, Brian Chapman wrote: > Hi everyone, > > I did some searching, but I didn't find anything that really discussed this > on the topic that I'm interested. Is there anything published that compares > the cycle times of the most used instructions? > > For example; moving an address between areas of storage. I would assume > that executing a LOAD and STORE would be much quicker than executing a MVC. > > Or executing a LOAD ADDRESS to increment a register instead of ADD HALF > WORD. > > Or does this really matter as much as ordering the instructions so they are > optimized for the pipeline? > > ---------------------------------------------------------------------- > 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
