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Constant folding

Constant folding are related compiler optimizations used by many modern compilers that evaluate expressions whose values are known at compile time and replaces them with the computed result. For example, an expression such as 2 * 3 can be replaced by 6 before the program is run.

Constant folding, Constant propagation & Constant folding and cross compilation

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Constant folding

ConstantCompile timeInteger literalIEEE floatsNaN
6 related topics

Constant propagation

Intrinsic functionsDead-code eliminationReaching definition
3 related topics

Constant folding and cross compilation

Cross compilersFloating point
2 related topics

The optimizations in action

True
1 related topics

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Overview

Constant folding

Constant folding and cross compilation

Constant propagation

The optimizations in action

  • True Boolean data type

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Map overview Semantic statistics

Constant folding

Nodes22
Edges21
Triples11
Avg. degree1.91
Density0.090909
Components1

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Constant folding

Top relations

related to Constant folding · 5
Constant folding → Consider, Constant, Instead, Most, Terms
related to Constant folding and cross compilation · 2
Constant folding → Cross, This
related to The optimizations in action · 2
Constant folding → Consider, Constant

Important terminology Word statistics

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Important terminology

constant propagation folding values known compile time compilers whose compiler expressions replaced constants used may program variables conditional also optimizations

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
theseinstance ofthey identify constructs0.80text
substitute the computed values at compile timeinstance ofthey identify constructs0.80text
Constant foldingrelated to Constant foldingConstant0.60section
Constant foldingrelated to Constant foldingTerms0.60section
Constant foldingrelated to Constant foldingConsider0.60section
Constant foldingrelated to Constant foldingMost0.60section
Constant foldingrelated to Constant foldingInstead0.60section
Constant foldingrelated to Constant folding and cross compilationCross0.60section
Constant foldingrelated to Constant folding and cross compilationThis0.60section
Constant foldingrelated to The optimizations in actionConstant0.60section
Constant foldingrelated to The optimizations in actionConsider0.60section

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