Example

1: t₁ = a * a

2: t ₂ = a * b

3: t₃ = 2 * t₂

4: t₄ = t ₁ + t₃

5: t₅ = b * b

6: t₆ = t ₄ + t₅

7: X = t ₆

For example, consider the basic block shown above.