[#llvm-SpecMap]
= xref:llvm.adoc[llvm]::SpecMap
:relfileprefix: ../
:mrdocs:

Map from functions to ranges of candidate specializations.

== Synopsis

Declared in `<llvm/Transforms/IPO/FunctionSpecialization.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
using SpecMap = xref:llvm/DenseMap-0c.adoc[DenseMap<Function*, std::pair<unsigned int, unsigned int>>];
----

== Description

The FunctionSpecializer keeps the discovered specialisation opportunities for the module in a single vector, where the specialisations of each function form a contiguous range. This map's value is the beginning and the end of that range.


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