💻 Replacing function call 🏭 Adding into process 🌐 Embedding resources

inlining

1 7.5

Replacing a call to a function with the actual code so the program runs faster

noun
/ˈɪnˌlaɪnɪŋ/

Specialized

: sustitución de llamada

Formatting the code such that the compiler had compile-time knowledge of functions, with inlining used as an enabling optimization, and a few variations produced.

Examples

Sometimes the process of creating the thunk is called outlining (the reverse operation of inlining), and the thunk is then referred to as an outline.

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Inlining may enable loop-invariant code motion, dead code elimination, or induction variable elimination.

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Why should simple inlining make such a large difference?

Blog text (25)
In a well-optimized implementation, with stuff passed in registers, this can just be a jump; with inlining, it might not even require that.

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With proper inlining, I believe these filters can be merged into something really tight, with very little glue waste.

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On the other hand, many inlining optimizations, or removal of dynamic tests, for instance, require either trivial dynamic analysis or impossibly complex static analysis.

Blog text (22)
Inlining certainly isn't just about eliminating the function call overhead (though there is that too); in fact, it's generally much more important as an enabling transformation.

Blog text (25)
The process of inlining helps improve performance significantly by directly embedding function code into the calling location.
For many developers, inlining is a crucial technique for optimizing the speed of applications by minimizing the function call overhead.
The answer is that inlining is key to why the text package achieves good performance.

Antonyms

function call

Specialized

1 4.4

An instruction in a program that runs a small piece of code and then returns

How Inlined

inlining

Specialized

1 7.5

macro

Specialized

40 6.8

inline

Specialized

6.9

function call

Specialized

1 4.4

Surface Forms

inlining singular

inlinings plural

Morphology

inlining = inline (semi-transparent) = inline + ing

Morphologically a regular -ing nominalization of 'inline', but the specific compiler-optimization sense is technical and not obvious to general learners.

Etymology

Inlining comes from the parts in- 'in' and line 'place in the code'. It means putting a small function's actual code 'in the line' where it is used instead of calling it from elsewhere, which helps the program run faster.