llvm-profgen - LLVM SPGO profile generation tool — LLVM 13 documentation

# llvm-profgen - LLVM SPGO profile generation tool

## SYNOPSIS

llvm-profgen [commands] [options]

## DESCRIPTION

The llvm-profgen utility generates a profile data file from given perf script data files for sample-based profile guided optimization(SPGO).

## COMMANDS

At least one of the following commands are required:

`--perfscript``=<string[,string,...]>`

  Path of perf-script trace created by Linux perf tool with script command(the raw perf.data should be profiled with -b).

`--binary``=<string[,string,...]>`

  Path of the input profiled binary files.

`--output``=<string>`

  Path of the output profile file.

## OPTIONS

llvm-profgen supports the following options:

`--format``=[text|binary|extbinary|compbinary|gcc]`

  Specify the format of the generated profile. Supported <format> are text, binary, extbinary, compbinary, gcc, see llvm-profdata for more descriptions of the format.

`--show-mmap-events```

  Print mmap events.

`--show-disassembly```

  Print disassembled code.

`--x86-asm-syntax``=[att|intel]`

  Specify whether to print assembly code in AT&T syntax (the default) or Intel syntax.