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

Return the sync scope of atomic instruction `I,` or nullopt if not atomic.

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::optional<SyncScope::ID>
getAtomicSyncScopeID(xref:llvm/Instruction.adoc[Instruction] const* I);
----

== Return Value

The sync scope of atomic instruction `I,` or nullopt if not atomic.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *I*
| The instruction to query.
|===


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