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

Holds a function's structural hash and maps for ignored‐operand analysis.

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct FunctionHashInfo;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:llvm/FunctionHashInfo/2constructor.adoc[`FunctionHashInfo`]         [.small]#[constructor]#
| Construct from a function hash and optional instruction/operand maps.
|===


== Data Members

[cols="1,4"]
|===
| Name| Description
| xref:llvm/FunctionHashInfo/FunctionHash.adoc[`FunctionHash`] 
| A hash value representing the structural content of the function
| xref:llvm/FunctionHashInfo/IndexInstruction.adoc[`IndexInstruction`] 
| A mapping from instruction indices to instruction pointers
| xref:llvm/FunctionHashInfo/IndexOperandHashMap.adoc[`IndexOperandHashMap`] 
| Maps instruction/operand index pairs to ignored‐operand hashes.
|===


== Non-Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:llvm/StructuralHashWithDifferences.adoc[`StructuralHashWithDifferences`]
| Computes a structural hash of a function while selectively ignoring operands.
|===


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