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

A simple RAII based Observer installer. Use this in a scope to install the Observer to the MachineFunction and reset it at the end of the scope.

== Synopsis

Declared in `<llvm/CodeGen/GlobalISel/GISelChangeObserver.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class RAIITemporaryObserverInstaller;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:llvm/RAIITemporaryObserverInstaller/2constructor.adoc[`RAIITemporaryObserverInstaller`]         [.small]#[constructor]#
| Temporarily add `TemporaryObserver` to `Observers` for this lifetime.
| xref:llvm/RAIITemporaryObserverInstaller/2destructor.adoc[`~RAIITemporaryObserverInstaller`] [.small]#[destructor]#
| Remove the temporary observer from the wrapper.
|===



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