About: Use-define chain

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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.

Attributes	Values
rdf:type	building
rdfs:label	Use-define chain (en)
rdfs:comment	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. (en)
sameAs	Use-define chain Use-define chain
dbp:wikiPageUsesTemplate	dbt:Code dbt:Confusing_section dbt:Mono dbt:Mvar dbt:Short_description dbt:Tmath dbt:Compiler_optimizations
Subject	Compiler optimizations Program analysis
gold:hypernym	Structure
prov:wasDerivedFrom	http://en.wikipedia.org/wiki/Use-define_chain?oldid=1029984363&ns=0
Wikipage page ID	1286768 (xsd:integer)
page length (characters) of wiki page	8487 (xsd:nonNegativeInteger)
Wikipage revision ID	1029984363 (xsd:integer)
has abstract	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. (en)
foaf:isPrimaryTopicOf	http://en.wikipedia.org/wiki/Use-define_chain
is Wikipage redirect of	DU Chain Def-use chain Def-use chains Definition-Use Chain Definition-use chain UD Chain Use-Definition Chain Use-def chain Use-def chains
is Link from a Wikipage to another Wikipage of	Compiler Constant folding Copy propagation Data-flow analysis DU Chain Def-use chain Def-use chains Definition-Use Chain Definition-use chain

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