4 ms·
My first thought was: is this a caching / instruction-fetch artifact? The two instruction sequences generate blocks of 8 bytes (for the eax+eax version) vs 11 b
by al2o3cr 11y ago
My first thought was: is this a caching / instruction-fetch artifact? The two instruction sequences generate blocks of 8 bytes (for the eax+eax version) vs 11 bytes (for the 2*eax +0 version).
- cfallin 11y agoThat's just about the only possibility, I think -- both forms should generate the same sequence of uops.