How many cycles will it take to execute in Single Cycle datapath

Question

add $s1, $s2, $s3
add $s5, $s2, $s3
sub $s3, $s3, $s2
lw $s2, 100 ($s3)

How many cycles will it take to execute above mips code in single cycle datapath..?

Answer 1

In single cycle data path, each instruction will run in one cycle; so your code need four cycles to execute.