Question

Write the corresponding MIPS I instruction to the C++ code segment below.

for (; i < 100; i ++) s = s + (2*i + 1);

• Use the table below for variable-register association

Variable	i	s
Register	$t0	$t1

• Variables s has been initialized with 0; i has been initialized with 1. No need to write instruction for their initializations.
• The instructions corresponding to the for-loop is labeled as "LOOP". The instructions following the for-loop is labeled by "DONE" (no need to implement DONE routine).
• Start with writing a test instruction related to the condition. Choose a proper test instruction. Fill ONLY the necessary boxes. Fill NA in unnecessary boxes (if any).
• Put space between label and mnemonic, space between mnemonic and operands, space between , and following symbol
• Use beq instruction for branch. Do NOT re-write your borrowed temporary register.

1 # Use $t2 as the destination reg.

2   

3 # Use $t3 as the destination reg.

4 # Use $t4 as the destination reg.

5   

6

7

8

... DONE:

Answer 1

Please find the answer below.
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screen shot of code

code.asm

#i is in $t0
#s is in $t1

#initialize s to 0
li $t1,0
LOOP:

#check if i==100 jump to done
beq $t0,100,DONE

#get 2*i
mul $t2,$t0,2

#get 2*i+1
add $t2,$t2,1

#s = s +2*i+1
add $t1,$t1,$t2

#i++
add $t0,$t0,1

j LOOP
DONE: