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. 
