May 2024
Intermediate to advanced
536 pages
17h 10m
English
Content preview from Compilers: Principles and Practice by Pearson
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312 Compilers – Principles and Practice
5: LAB 5 -- --
6: LD 3 T1 --
7: = T1 a --
8: BZ 24 -- --
9:
LD 5 T2 --
10: = T2 b --
11: BZ 19 -- --
12: LD a T3 --
13: LD b T4 --
14: LD c T5 --
15: ADD T4 T5 T6
16: MUL T3 T6 T7
17: = T7 d --
18: BR 22 -- --
19: LAB 11 -- --
20: LD 9 T8 --
21: = T8 d --
22: LAB 18 -- --
23: BR 5 -- --
24: LAB 8 -- --
Here the Basic Blocks are (1, 4), (5, 8), (9, 11), (12, 18), (19, 21), (22, 23) and (24, -). Figure 10.1
shows the corresponding flow-graph. Note that though the branch op-code written within a BB
refers to a 4-tuple entry number, in a flow-graph the branches are considered to the BB and not to
a specific entry. Also ...
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