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[CMake][Release] Enable bolt optimization for clang on Linux (#128090)

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Also stop buiding the bolt project on other platforms since bolt only
supports ELF.
This commit is contained in:
Tom Stellard 2025-02-25 07:33:42 -08:00 committed by GitHub
parent 1affadb7c6
commit 148111fdcf
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GPG Key ID: B5690EEEBB952194
2 changed files with 17 additions and 2 deletions
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2
.github/workflows/release-binaries.yml vendored
View File

@ -142,7 +142,7 @@ jobs:
# 2-3 hours to build on macOS, much slower than on Linux.
# The long build time causes the release build to time out on x86_64,
# so we need to disable flang there.
target_cmake_flags="$target_cmake_flags -DLLVM_RELEASE_ENABLE_PROJECTS='clang;lld;lldb;clang-tools-extra;bolt;polly;mlir'"
target_cmake_flags="$target_cmake_flags -DLLVM_RELEASE_ENABLE_PROJECTS='clang;lld;lldb;clang-tools-extra;polly;mlir'"
fi
target_cmake_flags="$target_cmake_flags -DBOOTSTRAP_BOOTSTRAP_DARWIN_osx_ARCHS=$arches -DBOOTSTRAP_BOOTSTRAP_DARWIN_osx_BUILTIN_ARCHS=$arches"
fi

17
clang/cmake/caches/Release.cmake
View File

@ -29,6 +29,13 @@ endfunction()
# cache file to CMake via -C. e.g.
#
# cmake -D LLVM_RELEASE_ENABLE_PGO=ON -C Release.cmake
set (DEFAULT_PROJECTS "clang;lld;lldb;clang-tools-extra;polly;mlir;flang")
# bolt only supports ELF, so only enable it for Linux.
if (${CMAKE_HOST_SYSTEM_NAME} MATCHES "Linux")
list(APPEND DEFAULT_PROJECTS "bolt")
endif()
set (DEFAULT_RUNTIMES "compiler-rt;libcxx")
if (NOT WIN32)
list(APPEND DEFAULT_RUNTIMES "libcxxabi" "libunwind")
@ -36,7 +43,7 @@ endif()
set(LLVM_RELEASE_ENABLE_LTO THIN CACHE STRING "")
set(LLVM_RELEASE_ENABLE_PGO ON CACHE BOOL "")
set(LLVM_RELEASE_ENABLE_RUNTIMES ${DEFAULT_RUNTIMES} CACHE STRING "")
set(LLVM_RELEASE_ENABLE_PROJECTS "clang;lld;lldb;clang-tools-extra;bolt;polly;mlir;flang" CACHE STRING "")
set(LLVM_RELEASE_ENABLE_PROJECTS ${DEFAULT_PROJECTS} CACHE STRING "")
# Note we don't need to add install here, since it is one of the pre-defined
# steps.
set(LLVM_RELEASE_FINAL_STAGE_TARGETS "clang;package;check-all;check-llvm;check-clang" CACHE STRING "")
@ -118,6 +125,11 @@ if(NOT ${CMAKE_HOST_SYSTEM_NAME} MATCHES "Darwin")
set(RELEASE_LINKER_FLAGS "${RELEASE_LINKER_FLAGS} -static-libgcc")
endif()
# Set flags for bolt
if (${CMAKE_HOST_SYSTEM_NAME} MATCHES "Linux")
set(RELEASE_LINKER_FLAGS "${RELEASE_LINKER_FLAGS} -Wl,--emit-relocs,-znow")
endif()
set_instrument_and_final_stage_var(CMAKE_EXE_LINKER_FLAGS ${RELEASE_LINKER_FLAGS} STRING)
set_instrument_and_final_stage_var(CMAKE_SHARED_LINKER_FLAGS ${RELEASE_LINKER_FLAGS} STRING)
set_instrument_and_final_stage_var(CMAKE_MODULE_LINKER_FLAGS ${RELEASE_LINKER_FLAGS} STRING)
@ -125,6 +137,9 @@ set_instrument_and_final_stage_var(CMAKE_MODULE_LINKER_FLAGS ${RELEASE_LINKER_FL
# Final Stage Config (stage2)
set_final_stage_var(LLVM_ENABLE_RUNTIMES "${LLVM_RELEASE_ENABLE_RUNTIMES}" STRING)
set_final_stage_var(LLVM_ENABLE_PROJECTS "${LLVM_RELEASE_ENABLE_PROJECTS}" STRING)
if (${CMAKE_HOST_SYSTEM_NAME} MATCHES "Linux")
set_final_stage_var(CLANG_BOLT "INSTRUMENT" STRING)
endif()
set_final_stage_var(CPACK_GENERATOR "TXZ" STRING)
set_final_stage_var(CPACK_ARCHIVE_THREADS "0" STRING)