1*760c253cSXin Li# pgo_tools 2*760c253cSXin Li 3*760c253cSXin LiThis directory contains scripts used to generate and vet PGO profiles for LLVM. 4*760c253cSXin Li 5*760c253cSXin LiIf you're a Mage who wants to generate a new PGO profile for the llvm-next 6*760c253cSXin Lirelease, `./generate_llvm_next_pgo.py` is what you should run **outside of a 7*760c253cSXin Lichroot**. It will create a new chroot, and generate a profile that's 8*760c253cSXin Libackwards-compatible with our bootstrap chroot toolchains. This script takes a 9*760c253cSXin Lifew dozen minutes, and prints an "upload PGO profile" command at the end. 10*760c253cSXin Li 11*760c253cSXin LiIf you're a user who wants to generate a bespoke PGO profile for LLVM, 12*760c253cSXin Li`./generate_pgo_profile.py` is what you want. Run it **inside of a chroot**, and 13*760c253cSXin Liit will generate a profile for you with a pretty comprehensive, predefined 14*760c253cSXin Liworkload (building absl's tests for arm32, arm64, and a few x86_64 configs). 15*760c253cSXin Li 16*760c253cSXin LiIf you want to compare the rough performance of PGO profiles, 17*760c253cSXin Li`./benchmark_pgo_profiles.py` may be useful. 18