What is the addressable unit of registers? A byte or a 4-byte integer/float, or a 16-byte vector?
If I declare a byte type private variable, will it occupy a 1-byte register, or 4-, or 16-byte register?
How are registers used by the ALU? In the following statements,
x.a = 1.f; // writing to the first element of x
float y = x.b + 2.f; // reading the second element of x
can the last two instructions be excuted simultaneously?
Thank you in advance!