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

Describes how many bytes are dead when a pointer argument is returned from a call. Used by the `dead_on_return` parameter attribute.

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class DeadOnReturnInfo;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:llvm/DeadOnReturnInfo/2constructor-0b.adoc[`DeadOnReturnInfo`]         [.small]#[constructor]#
| Constructors
| xref:llvm/DeadOnReturnInfo/coversAllReachableMemory.adoc[`coversAllReachableMemory`] 
| Return true if all memory reachable through the pointer is dead on return.
| xref:llvm/DeadOnReturnInfo/getNumberOfDeadBytes.adoc[`getNumberOfDeadBytes`] 
| Return the number of bytes that are dead on return from the call.
| xref:llvm/DeadOnReturnInfo/isZeroSized.adoc[`isZeroSized`] 
| Return true if zero bytes are marked dead on return.
| xref:llvm/DeadOnReturnInfo/toIntValue.adoc[`toIntValue`] 
| Encode this info as an integer for attribute storage.
|===


== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:llvm/DeadOnReturnInfo/createFromIntValue.adoc[`createFromIntValue`] 
| Decode a packed integer encoding of dead‐on‐return information.
|===



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