[all-commits] [llvm/llvm-project] ad0fb4: [CMake][PGO] Add option for using an external proj...

[Tom Stellard via All-commits]

  Branch: refs/heads/release/18.x
  Home:   https://github.com/llvm/llvm-project
  Commit: ad0fb418badbb695b5db9335985e67c67e69c554
      https://github.com/llvm/llvm-project/commit/ad0fb418badbb695b5db9335985e67c67e69c554
  Author: Tom Stellard <tstellar at redhat.com>
  Date:   2024-02-06 (Tue, 06 Feb 2024)

  Changed paths:
    M clang/utils/perf-training/CMakeLists.txt
    M clang/utils/perf-training/perf-helper.py
    M llvm/docs/AdvancedBuilds.rst

  Log Message:
  -----------
  [CMake][PGO] Add option for using an external project to generate profile data (#78879)

The new CLANG_PGO_TRAINING_DATA_SOURCE_DIR allows users to specify a
CMake project to use for generating the profile data. For example, to
use the llvm-test-suite to generate profile data you would do:

$ cmake -G Ninja -B build -S llvm -C <path to
source>/clang/cmake/caches/PGO.cmake \
-DBOOTSTRAP_CLANG_PGO_TRAINING_DATA_SOURCE_DIR=<path to llvm-test-suite>
\
        -DBOOTSTRAP_CLANG_PGO_TRAINING_DEPS=runtimes

Note that the CLANG_PERF_TRAINING_DEPS has been renamed to
CLANG_PGO_TRAINING_DEPS.

---------

Co-authored-by: Petr Hosek <phosek at google.com>
(cherry picked from commit dd0356d741aefa25ece973d6cc4b55dcb73b84b4)