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

This function is the main interface to the MIR serialization format parser.

== Synopsis

Declared in `<llvm/CodeGen/MIRParser/MIRParser.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::unique_ptr<MIRParser>
createMIRParserFromFile(
    xref:llvm/StringRef.adoc[StringRef] Filename,
    xref:llvm/SMDiagnostic.adoc[SMDiagnostic]& Error,
    xref:llvm/LLVMContext.adoc[LLVMContext]& Context,
    std::function<void(xref:llvm/Function.adoc[Function]&)> ProcessIRFunction = nullptr);
----

== Description

It reads in a MIR file and returns a MIR parser that can parse the embedded LLVM IR module and initialize the machine functions by parsing the machine function's state.

== Return Value

A MIR parser for the file, or nullptr if a parsing error occurred.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *Filename*
| ‐ The name of the file to parse.
| *Error*
| ‐ Error result info.
| *Context*
| ‐ Context which will be used for the parsed LLVM IR module.
| *ProcessIRFunction*
| ‐ function to run on every IR function or stub loaded from the MIR file.
|===


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