See below.
The loop is already correct for the problem. Don't change it. Computing the sum is done by adding just two statements:
##
## Sum of integers 0 .. 9
##
## Registers:
## $8 --- loop control
## $9 --- scratch
## $10 --- sum
init: ori $10,$0,0 # sum = 0
ori $8,$0,0 # count = 0
test: sltiu $9,$8,10 # count < 10
beq $9,$0,endLp # end loop if count >= 10
sll $0,$0,0 # delay
addu $10,$10,$8 # sum += count
addiu $8,$8,1 # count++ ;
j test
sll $0,$0,0 # delay
endLp: sll $0,$0,0 # jump target
Of all the slls
in the program,
which one is the most dangerous to remove?