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225 lines
8.4 KiB
225 lines
8.4 KiB
include(ExternalProject)
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include(CheckCXXCompilerFlag)
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#==============================================================================
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# Build Google Benchmark for libc++
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#==============================================================================
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set(BENCHMARK_LIBCXX_COMPILE_FLAGS
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-Wno-unused-command-line-argument
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-nostdinc++
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-isystem ${LIBCXX_SOURCE_DIR}/include
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-L${LIBCXX_LIBRARY_DIR}
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-Wl,-rpath,${LIBCXX_LIBRARY_DIR}
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${SANITIZER_FLAGS}
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)
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if (DEFINED LIBCXX_CXX_ABI_LIBRARY_PATH)
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list(APPEND BENCHMARK_LIBCXX_COMPILE_FLAGS
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-L${LIBCXX_CXX_ABI_LIBRARY_PATH}
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-Wl,-rpath,${LIBCXX_CXX_ABI_LIBRARY_PATH})
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endif()
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if (LIBCXX_NEEDS_SITE_CONFIG)
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list(APPEND BENCHMARK_LIBCXX_COMPILE_FLAGS -include "${LIBCXX_BINARY_DIR}/__config_site")
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endif()
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split_list(BENCHMARK_LIBCXX_COMPILE_FLAGS)
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ExternalProject_Add(google-benchmark-libcxx
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EXCLUDE_FROM_ALL ON
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DEPENDS cxx cxx-headers
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PREFIX benchmark-libcxx
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SOURCE_DIR ${LIBCXX_SOURCE_DIR}/utils/google-benchmark
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INSTALL_DIR ${CMAKE_CURRENT_BINARY_DIR}/benchmark-libcxx
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CMAKE_CACHE_ARGS
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-DCMAKE_C_COMPILER:STRING=${CMAKE_C_COMPILER}
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-DCMAKE_CXX_COMPILER:STRING=${CMAKE_CXX_COMPILER}
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-DCMAKE_BUILD_TYPE:STRING=RELEASE
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-DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
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-DCMAKE_CXX_FLAGS:STRING=${BENCHMARK_LIBCXX_COMPILE_FLAGS}
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-DBENCHMARK_USE_LIBCXX:BOOL=ON
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-DBENCHMARK_ENABLE_TESTING:BOOL=OFF)
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#==============================================================================
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# Build Google Benchmark for the native stdlib
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#==============================================================================
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set(BENCHMARK_NATIVE_TARGET_FLAGS)
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if (LIBCXX_BENCHMARK_NATIVE_GCC_TOOLCHAIN)
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set(BENCHMARK_NATIVE_TARGET_FLAGS
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-gcc-toolchain ${LIBCXX_BENCHMARK_NATIVE_GCC_TOOLCHAIN})
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endif()
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split_list(BENCHMARK_NATIVE_TARGET_FLAGS)
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if (LIBCXX_BENCHMARK_NATIVE_STDLIB)
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ExternalProject_Add(google-benchmark-native
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EXCLUDE_FROM_ALL ON
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PREFIX benchmark-native
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SOURCE_DIR ${LIBCXX_SOURCE_DIR}/utils/google-benchmark
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INSTALL_DIR ${CMAKE_CURRENT_BINARY_DIR}/benchmark-native
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CMAKE_CACHE_ARGS
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-DCMAKE_C_COMPILER:STRING=${CMAKE_C_COMPILER}
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-DCMAKE_CXX_COMPILER:STRING=${CMAKE_CXX_COMPILER}
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-DCMAKE_CXX_FLAGS:STRING=${BENCHMARK_NATIVE_TARGET_FLAGS}
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-DCMAKE_BUILD_TYPE:STRING=RELEASE
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-DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
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-DBENCHMARK_ENABLE_TESTING:BOOL=OFF)
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endif()
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#==============================================================================
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# Benchmark tests configuration
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#==============================================================================
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add_custom_target(cxx-benchmarks)
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set(BENCHMARK_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR})
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set(BENCHMARK_LIBCXX_INSTALL ${CMAKE_CURRENT_BINARY_DIR}/benchmark-libcxx)
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set(BENCHMARK_NATIVE_INSTALL ${CMAKE_CURRENT_BINARY_DIR}/benchmark-native)
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check_flag_supported("-std=c++17")
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mangle_name("LIBCXX_SUPPORTS_STD_EQ_c++17_FLAG" BENCHMARK_SUPPORTS_STD_CXX17_FLAG)
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if (${BENCHMARK_SUPPORTS_STD_CXX17_FLAG})
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set(BENCHMARK_DIALECT_FLAG "-std=c++17")
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else()
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# If the compiler doesn't support -std=c++17, attempt to fall back to -std=c++1z while still
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# requiring C++17 language features.
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set(BENCHMARK_DIALECT_FLAG "-std=c++1z")
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endif()
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set(BENCHMARK_TEST_COMPILE_FLAGS
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${BENCHMARK_DIALECT_FLAG} -O2
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-I${BENCHMARK_LIBCXX_INSTALL}/include
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-I${LIBCXX_SOURCE_DIR}/test/support
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)
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set(BENCHMARK_TEST_LIBCXX_COMPILE_FLAGS
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-nostdinc++
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-isystem ${LIBCXX_SOURCE_DIR}/include
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${BENCHMARK_TEST_COMPILE_FLAGS}
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${SANITIZER_FLAGS}
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-Wno-user-defined-literals
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)
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if (LIBCXX_NEEDS_SITE_CONFIG)
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list(APPEND BENCHMARK_TEST_LIBCXX_COMPILE_FLAGS
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-include "${LIBCXX_BINARY_DIR}/__config_site")
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endif()
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set(BENCHMARK_TEST_LIBCXX_LINK_FLAGS
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-nodefaultlibs
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-L${BENCHMARK_LIBCXX_INSTALL}/lib/
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${SANITIZER_FLAGS}
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)
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set(BENCHMARK_TEST_NATIVE_COMPILE_FLAGS
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${BENCHMARK_NATIVE_TARGET_FLAGS}
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${BENCHMARK_TEST_COMPILE_FLAGS}
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)
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set(BENCHMARK_TEST_NATIVE_LINK_FLAGS
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${BENCHMARK_NATIVE_TARGET_FLAGS}
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-L${BENCHMARK_NATIVE_INSTALL}/lib
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)
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split_list(BENCHMARK_TEST_COMPILE_FLAGS)
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split_list(BENCHMARK_TEST_LIBCXX_COMPILE_FLAGS)
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split_list(BENCHMARK_TEST_LIBCXX_LINK_FLAGS)
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split_list(BENCHMARK_TEST_NATIVE_COMPILE_FLAGS)
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split_list(BENCHMARK_TEST_NATIVE_LINK_FLAGS)
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if (LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libstdc++")
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find_library(LIBSTDCXX_FILESYSTEM_TEST stdc++fs
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PATHS ${LIBCXX_BENCHMARK_NATIVE_GCC_TOOLCHAIN}
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PATH_SUFFIXES lib lib64
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DOC "The libstdc++ filesystem library used by the benchmarks"
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)
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if (NOT "${LIBSTDCXX_FILESYSTEM_TEST}" STREQUAL "LIBSTDCXX_FILESYSTEM_TEST-NOTFOUND")
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set(LIBSTDCXX_FILESYSTEM_LIB "stdc++fs")
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endif()
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endif()
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set(libcxx_benchmark_targets)
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function(add_benchmark_test name source_file)
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set(libcxx_target ${name}_libcxx)
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list(APPEND libcxx_benchmark_targets ${libcxx_target})
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add_executable(${libcxx_target} EXCLUDE_FROM_ALL ${source_file})
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add_dependencies(${libcxx_target} cxx cxx-headers google-benchmark-libcxx)
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add_dependencies(cxx-benchmarks ${libcxx_target})
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if (LIBCXX_ENABLE_SHARED)
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target_link_libraries(${libcxx_target} cxx_shared)
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else()
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target_link_libraries(${libcxx_target} cxx_static)
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endif()
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if (TARGET cxx_experimental)
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target_link_libraries(${libcxx_target} cxx_experimental)
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endif()
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if (TARGET cxx_filesystem)
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target_link_libraries(${libcxx_target} cxx_filesystem)
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endif()
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target_link_libraries(${libcxx_target} -lbenchmark)
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if (LLVM_USE_SANITIZER)
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target_link_libraries(${libcxx_target} -ldl)
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endif()
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set_target_properties(${libcxx_target}
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PROPERTIES
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OUTPUT_NAME "${name}.libcxx.out"
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RUNTIME_OUTPUT_DIRECTORY "${BENCHMARK_OUTPUT_DIR}"
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COMPILE_FLAGS "${BENCHMARK_TEST_LIBCXX_COMPILE_FLAGS}"
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LINK_FLAGS "${BENCHMARK_TEST_LIBCXX_LINK_FLAGS}")
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if (LIBCXX_BENCHMARK_NATIVE_STDLIB)
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if (LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libstdc++" AND NOT DEFINED LIBSTDCXX_FILESYSTEM_LIB
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AND "${name}" STREQUAL "filesystem")
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return()
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endif()
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set(native_target ${name}_native)
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add_executable(${native_target} EXCLUDE_FROM_ALL ${source_file})
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add_dependencies(${native_target} google-benchmark-native
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google-benchmark-libcxx)
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target_link_libraries(${native_target} -lbenchmark)
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if (LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libstdc++")
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target_link_libraries(${native_target} ${LIBSTDCXX_FILESYSTEM_LIB})
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elseif (LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libc++")
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target_link_libraries(${native_target} -lc++fs -lc++experimental)
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endif()
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if (LIBCXX_HAS_PTHREAD_LIB)
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target_link_libraries(${native_target} -pthread)
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endif()
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add_dependencies(cxx-benchmarks ${native_target})
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set_target_properties(${native_target}
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PROPERTIES
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OUTPUT_NAME "${name}.native.out"
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RUNTIME_OUTPUT_DIRECTORY "${BENCHMARK_OUTPUT_DIR}"
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INCLUDE_DIRECTORIES ""
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COMPILE_FLAGS "${BENCHMARK_TEST_NATIVE_COMPILE_FLAGS}"
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LINK_FLAGS "${BENCHMARK_TEST_NATIVE_LINK_FLAGS}")
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endif()
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endfunction()
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#==============================================================================
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# Register Benchmark tests
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#==============================================================================
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file(GLOB BENCHMARK_TESTS "*.bench.cpp")
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foreach(test_path ${BENCHMARK_TESTS})
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get_filename_component(test_file "${test_path}" NAME)
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string(REPLACE ".bench.cpp" "" test_name "${test_file}")
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if (NOT DEFINED ${test_name}_REPORTED)
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message(STATUS "Adding Benchmark: ${test_file}")
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# Only report the adding of the benchmark once.
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set(${test_name}_REPORTED ON CACHE INTERNAL "")
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endif()
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add_benchmark_test(${test_name} ${test_file})
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endforeach()
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if (LIBCXX_INCLUDE_TESTS)
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include(AddLLVM)
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if (NOT DEFINED LIBCXX_TEST_DEPS)
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message(FATAL_ERROR "Expected LIBCXX_TEST_DEPS to be defined")
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endif()
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configure_lit_site_cfg(
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${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.py.in
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${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg.py)
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set(BENCHMARK_LIT_ARGS "--show-all --show-xfail --show-unsupported ${LIT_ARGS_DEFAULT}")
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add_lit_target(check-cxx-benchmarks
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"Running libcxx benchmarks tests"
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${CMAKE_CURRENT_BINARY_DIR}
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DEPENDS cxx-benchmarks ${LIBCXX_TEST_DEPS}
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ARGS ${BENCHMARK_LIT_ARGS})
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endif()
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