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

The core module pass which does a post‐order walk of the SCCs and runs a CGSCC pass over each one.

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class ModuleToPostOrderCGSCCPassAdaptor
    : public xref:llvm/RequiredPassInfoMixin-047.adoc[RequiredPassInfoMixin<ModuleToPostOrderCGSCCPassAdaptor>]
----

== Description

Designed to allow composition of a CGSCCPass(Manager) and a ModulePassManager. Note that this pass must be run with a module analysis manager as it uses the LazyCallGraph analysis. It will also run the `CGSCCAnalysisManagerModuleProxy` analysis prior to running the CGSCC pass over the module to enable a `FunctionAnalysisManager` to be used within this run safely.

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:llvm/RequiredPassInfoMixin-047.adoc[RequiredPassInfoMixin<ModuleToPostOrderCGSCCPassAdaptor>]`
| A CRTP mix‐in for passes that should not be skipped.
|===

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:llvm/ModuleToPostOrderCGSCCPassAdaptor/PassConceptT.adoc[`PassConceptT`] 
| Type‐erased CGSCC pass concept used by this adaptor.
|===


== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:llvm/ModuleToPostOrderCGSCCPassAdaptor/2constructor-0d4.adoc[`ModuleToPostOrderCGSCCPassAdaptor`]         [.small]#[constructor]#
| Constructors
| xref:llvm/ModuleToPostOrderCGSCCPassAdaptor/operator_assign.adoc[`operator=`] 
| Assign from `RHS` using copy‐and‐swap.
| xref:llvm/ModuleToPostOrderCGSCCPassAdaptor/printPipeline.adoc[`printPipeline`] 
| Print this adaptor and its nested CGSCC pass as a pipeline.
| xref:llvm/ModuleToPostOrderCGSCCPassAdaptor/run.adoc[`run`] 
| Runs the CGSCC pass across every SCC in the module.
|===


== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:llvm/ModuleToPostOrderCGSCCPassAdaptor/isRequired.adoc[`isRequired`] 
| Return true; required passes cannot be skipped.
|===


== Friends

[cols="1,4"]
|===
| Name| Description
| `xref:llvm/swap-00.adoc[llvm::swap]`
| Swap the nested passes of two adaptors.
|===

== Non-Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:llvm/createModuleToPostOrderCGSCCPassAdaptor.adoc[`createModuleToPostOrderCGSCCPassAdaptor`]
| A function to deduce a function pass type and wrap it in the templated adaptor.
|===


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