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

Represents a hint about the context in which a vector instruction or intrinsic is used.

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
enum class VectorInstrContext : uint8_t;
----

== Description

On some targets, inserts/extracts can cheaply be folded into loads/stores. Similarly, vp.merge can also be folded into binary ops on some targets.

This enum allows the vectorizer to give getVectorInstrCost and getIntrinsicInstrCost an idea of how the values are used.

See `getVectorInstrContextHint` to compute a VectorInstrContext from an insert/extract Instruction*.

== Members

[cols="1,4"]
|===
| Name| Description
| `None` 
| The instruction is not folded.
| `Load` 
| The value being inserted comes from a load (InsertElement only).
| `Store` 
| The extracted value is stored (ExtractElement only).
| `BinaryOp` 
| One of the operands is a binary op.
|===



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