3.65
A
%rdx
B
%rax
C
15
The pointer that goes column-wise has to be incremented by a value that is equivalent to the size of one full row. Each element is 8 bytes long, so we get \(120 \div 8 = 15\).
%rdx
%rax
15
The pointer that goes column-wise has to be incremented by a value that is equivalent to the size of one full row. Each element is 8 bytes long, so we get \(120 \div 8 = 15\).