[#llvm-parseWidenableBranch-05]
= xref:llvm.adoc[llvm]::parseWidenableBranch
:relfileprefix: ../
:mrdocs:

Parses a widenable branch and returns Uses so they can be modified.

== Synopsis

Declared in `<llvm/Analysis/GuardUtils.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
parseWidenableBranch(
    xref:llvm/User.adoc[User]* U,
    xref:llvm/Use.adoc[Use]*& Cond,
    xref:llvm/Use.adoc[Use]*& WC,
    xref:llvm/BasicBlock.adoc[BasicBlock]*& IfTrueBB,
    xref:llvm/BasicBlock.adoc[BasicBlock]*& IfFalseBB);
----

== Description

Analogous to the above, but return the Uses so that they can be modified. Unlike previous version, Condition is optional and may be null.

== Return Value

True if `U` matches the widenable branch pattern.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *U*
| User expected to be the widenable branch.
| *Cond*
| Set to the Use of the non‐widenable condition, or null.
| *WC*
| Set to the Use of the widenable.condition call result.
| *IfTrueBB*
| Set to the true successor of the branch.
| *IfFalseBB*
| Set to the false successor of the branch.
|===


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