[#llvm-operator_lshift-0d2]
= xref:llvm.adoc[llvm]::operator<<
:relfileprefix: ../
:mrdocs:

Mark following arguments of `R` as record‐only and return `R.`

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class RemarkT>
decltype(auto)
operator<<(RemarkT&& R)
requires std::is_base_of_v<DiagnosticInfoOptimizationBase,
                                              std::remove_reference_t<RemarkT>>;
----

== Return Value

The forwarded remark `R` with following args marked record‐only.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *R*
| Remark to update
|===


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