profgen - LLVM SPGO profile generation tool — LLVM 21.0.0git documentation (original) (raw)

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 scriptcommand(the raw perf.data should be profiled with -b).

--binary=<string[,string,...]>¶

Path of the input profiled binary files.

--output=¶

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 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.