基本块划分图

B5

end:

L2: t1 = 10 * i t2 = t1 + j t3 = 8 * t2 t4 = t3 - 88 a[t4] = 0.0 j = j + 1 if j = 10 goto L2

B0

goto end

B3

L3: t5 = i - 1 t6 = 88 * t5 a[t6] = 1.0 i = i + 1 if i = 10 goto L3

i = i + 1 if i = 10 goto L1

B6

B4

i = i + 1

B7

B1

i = 1

B2

L1: j = 1