Author: Hongtao Yu Date: 2023-06-20T13:26:30-07:00 New Revision: 56e36e47f50446f519dfa2132cf5a49cc0816866
URL: https://github.com/llvm/llvm-project/commit/56e36e47f50446f519dfa2132cf5a49cc0816866 DIFF: https://github.com/llvm/llvm-project/commit/56e36e47f50446f519dfa2132cf5a49cc0816866.diff LOG: [UsersManual] Add llvm-progen as an alternative tool for AutoFDO profile generation. I'm adding llvm-profgen as an alternative AutoFDO profile generator to the user manual. llvm-profgen is widely used and tested by META as their default profile generator. Reviewed By: davidxl Differential Revision: https://reviews.llvm.org/D142994 Added: Modified: clang/docs/UsersManual.rst Removed: ################################################################################ diff --git a/clang/docs/UsersManual.rst b/clang/docs/UsersManual.rst index f8dbf819d6ff7..6a644eed6d32b 100644 --- a/clang/docs/UsersManual.rst +++ b/clang/docs/UsersManual.rst @@ -2400,6 +2400,14 @@ usual build cycle when using sample profilers for optimization: without the ``-b`` flag, you need to use ``--use_lbr=false`` when calling ``create_llvm_prof``. + Alternatively, the LLVM tool ``llvm-profgen`` can also be used to generate + the LLVM sample profile: + + .. code-block:: console + + $ llvm-profgen --binary=./code --output=code.prof--perfdata=perf.data + + 4. Build the code again using the collected profile. This step feeds the profile back to the optimizers. This should result in a binary that executes faster than the original one. Note that you are not _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
