Forums before death by AOL, social media and spammers... "We can't have nice things"
| comp.lang.asm.x86 | Ahh, the lost art of x86 assembly | 4,675 messages |
[ << oldest | < older | list | newer > | newest >> ]
| Message 4,587 of 4,675 |
| Robert Prins to All |
| Two-off code in program that runs in abo |
| 16 Apr 23 14:21:27 |
From: robert@nospicedham.prino.org Current code, simplified: mov ecx, 10 cdq div ecx cdq div ecx Equivalent faster, but longer code: imul eax, 0xcccd shr eax, 19 imul eax, 0xcccd shr eax, 19 And yes, as EAX is guaranteed to be small (<= 200) it is equivalent! Should I really care, or not? And what would a modern compiler generate? Robert -- Robert AH Prins robert(a)prino(d)org The hitchhiking grandfather - https://prino.neocities.org/ Some REXX code for use on z/OS - https://prino.neocities.org/zOS/zOS-Tools.html --- SoupGate-Win32 v1.05 * Origin: you cannot sedate... all the things you hate (1:229/2) |
(c) 1994, bbs@darkrealms.ca