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| author | Chris Bieneman <beanz@apple.com> | 2016-08-16 22:16:29 +0000 |
|---|---|---|
| committer | Chris Bieneman <beanz@apple.com> | 2016-08-16 22:16:29 +0000 |
| commit | eb1960e75654998eb9ade318fbcabaae4fa0064d (patch) | |
| tree | e294a58327f37945877967bff0dd2b65f73c21f8 /CMakeLists.txt | |
| parent | 7200cc30735502829d6dcec5fbc25e8d1f6c5f00 (diff) | |
[CMake] Workflow improvements to PGO generation
This patch adds a few new convenience options used by the PGO CMake cache to setup options on bootstrap stages. The new options are:
PGO_INSTRUMENT_LTO - Builds the instrumented and final builds with LTO
PGO_BUILD_CONFIGURATION - Accepts a CMake cache script that can be used for complex configuration of the stage2-instrumented and stage2 builds.
The patch also includes a fix for bootstrap dependencies so that the instrumented LTO tools don't get used when building the final stage, and it adds distribution targets to the passthrough.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@278862 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'CMakeLists.txt')
| -rw-r--r-- | CMakeLists.txt | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 2359360207..e6dde85bc2 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -571,11 +571,22 @@ if (CLANG_ENABLE_BOOTSTRAP) if(LLVM_BUILD_INSTRUMENTED) set(PGO_DEP generate-profdata) set(PGO_OPT -DLLVM_PROFDATA_FILE=${CMAKE_CURRENT_BINARY_DIR}/utils/perf-training/clang.profdata) - set(COMPILER_OPTIONS - -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER} - -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER} - -DCMAKE_ASM_COMPILER=${CMAKE_ASM_COMPILER}) + # Use the current tools for LTO instead of the instrumented ones + list(APPEND _BOOTSTRAP_DEFAULT_PASSTHROUGH + CMAKE_CXX_COMPILER + CMAKE_C_COMPILER + CMAKE_ASM_COMPILER + CMAKE_AR + CMAKE_RANLIB + DARWIN_LTO_LIBRARY + DYLD_LIBRARY_PATH) + + set(COMPILER_OPTIONS) + set(LTO_LIBRARY) set(RUNTIME_DEP) # Don't set runtime dependencies + set(LTO_DEP) # Don't need to depend on LTO + set(LTO_AR) + set(LTO_RANLIB) endif() # Find all variables that start with BOOTSTRAP_ and populate a variable with |