I was referring to the last bullet on page 44, "Regular register
clearing instructions are fast-pathed in the pipeline; and their results
do not use any physical registers (since zEC12)". The sub-bullets
mention XR (& XGR), but not SR, SLR, etc. So I may have assumed too much.
On the other
On 2016-04-02 14:13, John P. Hartmann wrote:
Last I heard SLR was seriously discouraged. because it stalls the
pipeline where the others don't.
I hadn't heard that one, but would be quite interested to hear whether
it is true.
--
Regards, Gord Tomlin
Action Software International
(a
