Question

O How basic blocks are identified and how the blocks are used to construct control flow graphs

Answer 1

Basic blocks are identified  because they are known to be a straight line that is known also as a code sequence that tends to have no branches in regards to its in and out branches and its exception is only to the entry and at the end.

Note that  Basic Block is said to be a composition  of statements that is known to be one that often always executes one after other, and this is often done in a sequence.

How do you create a flow graph from the basic blocks?

Flow graph  is gotten by:

• Lets Block B1 be the initial node and also Block B2 will tend to follows B1, so from B2 to B1 there is seen a kind of an edge.

Note that the first task is for a person to partition a sequence of three-address code and this is done into basic blocks.

Hence, Basic blocks are identified  because they are known to be a straight line that is known also as a code sequence that tends to have no branches in regards to its in and out branches and its exception is only to the entry and at the end.

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