Example

• To sum 3 consecutive elements of a sequence a0, a1 and a2, and put the result in a3.

• Suppose that these values are stored in memory starting at address A.

  • lw $10,A(0) # $10 = a0
  • lw $3,A(4) # $3 = a1
  • add $10,$10,$3 # $10 = a0 + a1
  • lw $3,A(8) # $3 = a2
  • add $10,$10,$3 # $10 = a0 + a1+ a2
  • sw $10,A(12) # a3 gets $10

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