Compiler optimizations | Data-flow analysis

Use-define chain

Within computer science, a Use-Definition Chain (UD Chain) is a data structure that consists of a use, U, of a variable, and all the definitions, D, of that variable that can reach that use without any other intervening definitions. A UD Chain generally means the assignment of some value to a variable. A counterpart of a UD Chain is a Definition-Use Chain (DU Chain), which consists of a definition, D, of a variable and all the uses, U, reachable from that definition without any other intervening definitions. Both UD and DU chains are created by using a form of static code analysis known as data flow analysis. Knowing the use-def and def-use chains for a program or subprogram is a prerequisite for many compiler optimizations, including constant propagation and common subexpression elimination. (Wikipedia).

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From playlist The Internet

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From playlist Modern Algebra - Chapter 15 (groups)

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From playlist Introduction to Algorithms

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From playlist The Internet

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From playlist HTML

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From playlist Data Structures

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From playlist Communicating Effectively

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From playlist Mathematics

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From playlist Mathematics

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From playlist Mathematics

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From playlist Bangalore School on Statistical Physics - XII (ONLINE) 2021

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From playlist Dualities in Topology and Algebra (Online)

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From playlist Edureka Live Classes 2020

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Related pages

Common subexpression elimination | Directed acyclic graph | Register allocation | Greatest common divisor