[#llvm-extractProfTotalWeight-0b]
= xref:llvm.adoc[llvm]::extractProfTotalWeight
:relfileprefix: ../
:mrdocs:

Retrieve the total of all weights from MD_prof data.

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
extractProfTotalWeight(
    xref:llvm/MDNode.adoc[MDNode] const* ProfileData,
    uint64_t& TotalWeights);
----

== Return Value

True on success with profile total weights filled in. False if no metadata was found.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ProfileData*
| The profile data to extract the total weight from
| *TotalWeights* [out]
| input variable to fill with total weights
|===


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