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

Returns true if VNI is killed by any PHI‐def values in LI.

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
hasPHIKill(
    xref:llvm/LiveInterval.adoc[LiveInterval] const& LI,
    xref:llvm/VNInfo.adoc[VNInfo] const* VNI) const;
----

== Description

This may conservatively return true to avoid expensive computations.

== Return Value

True if `VNI` may be killed by a PHI‐def in `LI.`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *LI*
| Live interval that may contain PHI kills of `VNI.`
| *VNI*
| Value number tested for a PHI kill.
|===


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