> Pages 7 to 8 of this presentation: > https://share.confex.com/share/124/webprogram/Session16609.html > > Evidently the code with SIMD instructions is the equivalent of what the > millicode does for SRST, but I may have misinterpreted what was said. > Using the millicoded instruction is evidently less efficient because there is > transition time to get into millicode mode. > > And I have no idea how it works.
That was quite interesting. I wasn't SRST in any way but a now I at least got some clue what one could do with these new instructions. I'm still puzzled by this by the way: VGBM VRF26,0x0 VSUMB VRF25,VRF25,VRF26 VSUMQF VRF25,VRF25,VRF26 This would seem to count every space (counted in VRF25) twice instead of only once. I'm still missing something or maybe I don't quite get the description of VSUM... Fred! ----------------------------------------------------------------- ATTENTION: The information in this electronic mail message is private and confidential, and only intended for the addressee. Should you receive this message by mistake, you are hereby notified that any disclosure, reproduction, distribution or use of this message is strictly prohibited. Please inform the sender by reply transmission and delete the message without copying or opening it. Messages and attachments are scanned for all viruses known. If this message contains password-protected attachments, the files have NOT been scanned for viruses by the ING mail domain. Always scan attachments before opening them. -----------------------------------------------------------------
