Data dependency

A data dependency in computer science is a situation in which a program statement (instruction) refers to the data of a preceding statement. In compiler theory, the technique used to discover data dependencies among statements (or instructions) is called dependence analysis.

There are three types of dependencies: data, name, and control.

Assuming statement ${\displaystyle S_{1}}$ and ${\displaystyle S_{2}}$, ${\displaystyle S_{2}}$ depends on ${\displaystyle S_{1}}$ if:

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