3 ms·
x86-64 isn't very space efficient anymore, so it's not hard to beat. Even AArch64, with a fixed 32-bit instruction size, competes well with x86-64. REX prefixe
by pcwalton 8y ago
x86-64 isn't very space efficient anymore, so it's not hard to beat. Even AArch64, with a fixed 32-bit instruction size, competes well with x86-64.
REX prefixes really killed the space efficiency of the x86 architecture.