4 ms·
Yes and no. On modern Intel CPUs, 32-bit bswap is 1 uop, but 64-bit bswap is 2. On AMD it seems to always be just 1 uop.
by pbsd 15y ago
Yes and no. On modern Intel CPUs, 32-bit bswap is 1 uop, but 64-bit bswap is 2. On AMD it seems to always be just 1 uop.