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

If `C` has exactly one entry with exactly one predecessor, return it, otherwise return nullptr.

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:llvm/GenericCycleInfo-08.adoc[BlockT]*
getCyclePredecessor(xref:llvm/CycleRef.adoc[CycleRef] C) const;
----

== Return Value

Unique predecessor of `C's` entry, or null if none.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *C*
| Cycle whose unique predecessor is requested.
|===


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