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

Look up the node specified by ID. If it exists, return it. If not, return the insertion token that will make insertion faster.

== Synopsis

Declared in `<llvm/ADT/FoldingSet.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:llvm/FoldingSetBase/Node.adoc[Node]*
FindNodeOrInsertPos(
    xref:llvm/FoldingSetNodeID.adoc[FoldingSetNodeID] const& ID,
    void*& InsertPos,
    xref:llvm/FoldingSetBase/FoldingSetInfo.adoc[FoldingSetInfo] const& Info);
----

== Return Value

Matching node, or null when absent (with `InsertPos` set).

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ID*
| Profile identifying the node to find.
| *InsertPos*
| Set to an insertion token when the node is absent.
| *Info*
| Trait callbacks used to profile and compare nodes.
|===


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