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

Get or create the swifterror value virtual register for a use of a swifterror by an instruction.

== Synopsis

Declared in `<llvm/CodeGen/SwiftErrorValueTracking.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:llvm/Register.adoc[Register]
getOrCreateVRegUseAt(
    xref:llvm/Instruction.adoc[Instruction] const* I,
    xref:llvm/MachineBasicBlock.adoc[MachineBasicBlock] const* MBB,
    xref:llvm/Value.adoc[Value] const* Val);
----

== Return Value

Virtual register representing that use.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *I*
| Instruction that uses the swifterror value.
| *MBB*
| Machine basic block containing `I.`
| *Val*
| SwiftError value used by `I.`
|===


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