NAME

       llvm-cgdata - LLVM CodeGen Data Tool

SYNOPSIS

       llvm-cgdata [commands] [options] (<binaries>|<.cgdata>)

DESCRIPTION

       The  :program:llvm-cgdata  utility  parses  raw codegen data embedded in compiled binary files and merges
       them into a single .cgdata file. It can also inspect and manipulate .cgdata files.  Currently,  the  tool
       supports  saving  and restoring outlined hash trees and stable function maps, allowing for more efficient
       function outlining and function  merging  across  modules  in  subsequent  compilations.  The  design  is
       extensible, allowing for the incorporation of additional codegen summaries and optimization techniques.

COMMANDS

       At least one of the following commands are required:

       --convert
              Convert a .cgdata file from one format to another.

       --merge
              Merge multiple raw codgen data in binaries into a single .cgdata file.

       --show Show summary information about a .cgdata file.

OPTIONS

       llvm-cgdata supports the following options:

       --format=[text|binary]
              Specify the format of the output .cgdata file.

       --output=<string>
              Specify the output file name.

       --cgdata-version
              Print the version of the llvm-cgdata tool.

EXAMPLES

       To convert a .cgdata file from binary to text format:
              $ llvm-cgdata –convert –format=text input.cgdata –output=output.data

       To merge multiple raw codegen data in object files into a single .cgdata file:
              $ llvm-cgdata –merge file1.o file2.o –output=merged.cgdata

       To show summary information about a .cgdata file:
              $ llvm-cgdata –show input.cgdata

Author

       Maintained by the LLVM Team (https://llvm.org/).

Copyright

       2003-2025, LLVM Project

15                                                 2025-12-01                                     LLVM-CGDATA(1)