3 ms·
Looks like Zbb is where the "CPOP" and related instructions (popcount, count leading/trailing zeroes) live. Zba ("and-not" etc.) and Zbs (single-bit) are more
by moloch-hai 4y ago
Looks like Zbb is where the "CPOP" and related instructions (popcount, count leading/trailing zeroes) live.
Zba ("and-not" etc.) and Zbs (single-bit) are more obscure and less important. Zbc (carry-less multiply) is interesting.