May 2024
Intermediate to advanced
536 pages
17h 10m
English
Content preview from Compilers: Principles and Practice by Pearson
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314 Compilers – Principles and Practice
Notice that the next reference and liveness information is associated with each 4-tuple within a BB
and not only the block itself.
Armed with these definitions, we can attempt various types of BB-localized optimizations. Two
BB are considered equivalent if they compute the same expressions. The goal of BB-localized
optimization is to get equivalent but more efficient BBs.
10.1.3 Loops in Flow-graphs
Almost all non-trivial programs in a High Level language contain looping constructs like WHILE-
DO or FOR and in all such programs the major portion of execution time is spent in loop iterations.
This requires ...
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