[#llvm-GenericDINode-getIfExists-07]
= xref:llvm.adoc[llvm]::xref:llvm/GenericDINode.adoc[GenericDINode]::getIfExists
:relfileprefix: ../../
:mrdocs:

`getIfExists` overloads

== Synopses

Declared in `<llvm/IR/Metadata.h>`

Return an existing uniqued tuple for `MDs,` or null if none.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
xref:llvm/MDTuple.adoc[MDTuple]*
xref:llvm/MDNode/getIfExists.adoc[getIfExists](
    xref:llvm/LLVMContext.adoc[LLVMContext]& Context,
    xref:llvm/ArrayRef-08.adoc[ArrayRef<Metadata*>] MDs);
----

[.small]#xref:llvm/MDNode/getIfExists.adoc[_» more..._]#

Get or create a GenericDINode with the given operands.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
xref:llvm/GenericDINode.adoc[GenericDINode]*
xref:llvm/GenericDINode/getIfExists-04.adoc[getIfExists](
    xref:llvm/LLVMContext.adoc[LLVMContext]& Context,
    unsigned int Tag,
    xref:llvm/StringRef.adoc[StringRef] Header,
    xref:llvm/ArrayRef-08.adoc[ArrayRef<Metadata*>] DwarfOps);
----

[.small]#xref:llvm/GenericDINode/getIfExists-04.adoc[_» more..._]#

Get or create a GenericDINode with the given operands.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
xref:llvm/GenericDINode.adoc[GenericDINode]*
xref:llvm/GenericDINode/getIfExists-05.adoc[getIfExists](
    xref:llvm/LLVMContext.adoc[LLVMContext]& Context,
    unsigned int Tag,
    xref:llvm/MDString.adoc[MDString]* Header,
    xref:llvm/ArrayRef-08.adoc[ArrayRef<Metadata*>] DwarfOps);
----

[.small]#xref:llvm/GenericDINode/getIfExists-05.adoc[_» more..._]#

== Return Value

* An existing uniqued tuple for `MDs,` or null.
* The metadata node (uniqued, distinct, or temporary as requested); getIfExists may return nullptr.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *Context*
| LLVM context that owns the node.
| *MDs*
| Operand metadata.
| *Tag*
| DWARF tag for the node.
| *Header*
| Null‐separated header string.
| *DwarfOps*
| DWARF operand metadata nodes.
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#