Question

Using MIPS:

Consider the following fragment of C code: for i=0: i < = 100: i = i + 1) {a[i] = b[i] + c;} Assume that a and bare arrays of words and the base address of a is in $a0 and the base address of b is in $a1. Register $t0 is associated with variable i and register $s0 with c. Write the code for MIPS. How many instructions are executed during the running of this code? How many memory data references will be made during execution?

Answer 1

for(i=0;i,<=100;i=i=1)

li $t0, 100 //t0 is a constant 100
li $t1,0 //t1 is a our counter
loop:
beq $t1,$t0,end
loop body
add $t1,$t1,1
end

a[i]=b[i]+c;

add $a0,$a1,$s0;

4 byte integer is needed at the time of execution.

add $s0,$s1,$s2