4 ms·
I wonder whether there are some prefixes that cause (some) CPUs to execute the instruction a lot slower.
by vardump 9mo ago
I wonder whether there are some prefixes that cause (some) CPUs to execute the instruction a lot slower.
- jxors 9mo agoThis is indeed a thing. I believe in general instructions are executed slower when there are more than 4 legacy prefixes. And there are plenty of other timing differences between different microarchitectures