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| author | Chris Bieneman <beanz@apple.com> | 2016-01-05 23:51:42 +0000 |
|---|---|---|
| committer | Chris Bieneman <beanz@apple.com> | 2016-01-05 23:51:42 +0000 |
| commit | 5be480417d1fbecc89d5759551e32e448134a94c (patch) | |
| tree | 3cae5b168bfa98d780b2917fbed8806116c9e412 /cmake | |
| parent | ce9707f0de5ef749500a627f42657ebb92627a04 (diff) | |
[CMake] Support a simple case for bootstrap builds to generate PGO data
Summary:
This patch adds support for the clang multi-stage bootstrapping to support PGO profdata generation, and can build a 2 or 3 stage compiler.
With this patch applied you can configure your build directory with the following invocation of CMake:
cmake -G <generator> -C <path_to_clang>/cmake/caches/PGO.cmake <source dir>
After configuration the following additional targets will be generated:
stage2-instrumented:
Builds a stage1 x86 compiler, runtime, and required tools (llvm-config, llvm-profdata) then uses that compiler to build an instrumented stage2 compiler.
stage2-instrumented-generate-profdata:
Depends on "stage2-instrumented" and will use the instrumented compiler to generate profdata based on the training files in <clang>/utils/perf-training
stage2:
Depends on "stage2-instrumented-generate-profdata" and will use the stage1 compiler with the stage2 profdata to build a PGO-optimized compiler.
stage2-check-llvm:
Depends on stage2 and runs check-llvm using the stage3 compiler.
stage2-check-clang:
Depends on stage2 and runs check-clang using the stage3 compiler.
stage2-check-all:
Depends on stage2 and runs check-all using the stage3 compiler.
stage2-test-suite:
Depends on stage2 and runs the test-suite using the stage3 compiler (requires in-tree test-suite).
Reviewers: bogner, silvas, chandlerc
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D15584
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@256873 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'cmake')
| -rw-r--r-- | cmake/caches/PGO-stage2-instrumented.cmake | 9 | ||||
| -rw-r--r-- | cmake/caches/PGO-stage2.cmake | 2 | ||||
| -rw-r--r-- | cmake/caches/PGO.cmake | 17 |
3 files changed, 28 insertions, 0 deletions
diff --git a/cmake/caches/PGO-stage2-instrumented.cmake b/cmake/caches/PGO-stage2-instrumented.cmake new file mode 100644 index 0000000000..fe5e83d28a --- /dev/null +++ b/cmake/caches/PGO-stage2-instrumented.cmake @@ -0,0 +1,9 @@ +set(CMAKE_BUILD_TYPE RELEASE CACHE STRING "") +set(CLANG_ENABLE_BOOTSTRAP ON CACHE BOOL "") +set(LLVM_BUILD_EXTERNAL_COMPILER_RT ON CACHE BOOL "") + +set(CLANG_BOOTSTRAP_TARGETS check-all check-llvm check-clang test-suite CACHE STRING "") + +set(CLANG_BOOTSTRAP_CMAKE_ARGS + -C ${CMAKE_CURRENT_LIST_DIR}/PGO-stage2.cmake + CACHE STRING "") diff --git a/cmake/caches/PGO-stage2.cmake b/cmake/caches/PGO-stage2.cmake new file mode 100644 index 0000000000..2080cd405f --- /dev/null +++ b/cmake/caches/PGO-stage2.cmake @@ -0,0 +1,2 @@ +set(CMAKE_BUILD_TYPE RELEASE CACHE STRING "") +set(LLVM_BUILD_EXTERNAL_COMPILER_RT ON CACHE BOOL "") diff --git a/cmake/caches/PGO.cmake b/cmake/caches/PGO.cmake new file mode 100644 index 0000000000..dc11173fae --- /dev/null +++ b/cmake/caches/PGO.cmake @@ -0,0 +1,17 @@ +set(CMAKE_BUILD_TYPE RELEASE CACHE STRING "") +set(CLANG_ENABLE_BOOTSTRAP ON CACHE BOOL "") +set(LLVM_BUILD_EXTERNAL_COMPILER_RT ON CACHE BOOL "") + +set(LLVM_TARGETS_TO_BUILD X86 CACHE STRING "") +set(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED ON CACHE BOOL "") +set(CLANG_BOOTSTRAP_TARGETS + generate-profdata + stage2 + stage2-check-all + stage2-check-llvm + stage2-check-clang + stage2-test-suite CACHE STRING "") + +set(CLANG_BOOTSTRAP_CMAKE_ARGS + -C ${CMAKE_CURRENT_LIST_DIR}/PGO-stage2-instrumented.cmake + CACHE STRING "") |