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

Create a pass that simplifies the CFG of a function.

== Synopsis

Declared in `<llvm/Transforms/Scalar.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:llvm/FunctionPass.adoc[FunctionPass]*
createCFGSimplificationPass(
    xref:llvm/SimplifyCFGOptions.adoc[SimplifyCFGOptions] Options = SimplifyCFGOptions(),
    std::function<bool(xref:llvm/Function.adoc[Function] const&)> Ftor = nullptr);
----

== Description

Merges basic blocks, eliminates unreachable blocks, simplifies terminators, converts switches to lookup tables, and related cleanups.

== Return Value

The newly created FunctionPass.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *Options*
| Configuration for which CFG simplifications to apply.
| *Ftor*
| Optional predicate; when set, only functions for which it returns true are simplified.
|===


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