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|
if (CMAKE_VERSION VERSION_LESS 3.17)
message(WARNING "The libc++ benchmarks won't be available because the version of CMake is too old to support them.")
return()
endif()
include(ExternalProject)
include(CheckCXXCompilerFlag)
#==============================================================================
# Build Google Benchmark for libc++
#==============================================================================
set(CMAKE_FOLDER "${CMAKE_FOLDER}/Benchmarks")
set(BENCHMARK_LIBCXX_COMPILE_FLAGS
-Wno-unused-command-line-argument
-nostdinc++
-isystem "${LIBCXX_GENERATED_INCLUDE_DIR}"
-L${LIBCXX_LIBRARY_DIR}
-Wl,-rpath,${LIBCXX_LIBRARY_DIR}
${SANITIZER_FLAGS}
)
if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
list(APPEND BENCHMARK_LIBCXX_COMPILE_FLAGS
-isystem "${LIBCXX_GENERATED_INCLUDE_TARGET_DIR}")
endif()
if (DEFINED LIBCXX_CXX_ABI_LIBRARY_PATH)
list(APPEND BENCHMARK_LIBCXX_COMPILE_FLAGS
-L${LIBCXX_CXX_ABI_LIBRARY_PATH}
-Wl,-rpath,${LIBCXX_CXX_ABI_LIBRARY_PATH})
endif()
split_list(BENCHMARK_LIBCXX_COMPILE_FLAGS)
ExternalProject_Add(google-benchmark-libcxx
EXCLUDE_FROM_ALL ON
DEPENDS cxx cxx-headers
PREFIX benchmark-libcxx
SOURCE_DIR ${LLVM_THIRD_PARTY_DIR}/benchmark
INSTALL_DIR ${CMAKE_CURRENT_BINARY_DIR}/benchmark-libcxx
CMAKE_CACHE_ARGS
-DCMAKE_C_COMPILER:STRING=${CMAKE_C_COMPILER}
-DCMAKE_CXX_COMPILER:STRING=${CMAKE_CXX_COMPILER}
-DCMAKE_BUILD_TYPE:STRING=RELEASE
-DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
-DCMAKE_CXX_FLAGS:STRING=${BENCHMARK_LIBCXX_COMPILE_FLAGS}
-DBENCHMARK_USE_LIBCXX:BOOL=ON
-DBENCHMARK_ENABLE_TESTING:BOOL=OFF)
#==============================================================================
# Build Google Benchmark for the native stdlib
#==============================================================================
set(BENCHMARK_NATIVE_TARGET_FLAGS)
if (LIBCXX_BENCHMARK_NATIVE_GCC_TOOLCHAIN)
set(BENCHMARK_NATIVE_TARGET_FLAGS
--gcc-toolchain=${LIBCXX_BENCHMARK_NATIVE_GCC_TOOLCHAIN})
endif()
split_list(BENCHMARK_NATIVE_TARGET_FLAGS)
if (LIBCXX_BENCHMARK_NATIVE_STDLIB)
ExternalProject_Add(google-benchmark-native
EXCLUDE_FROM_ALL ON
PREFIX benchmark-native
SOURCE_DIR ${LLVM_THIRD_PARTY_DIR}/benchmark
INSTALL_DIR ${CMAKE_CURRENT_BINARY_DIR}/benchmark-native
CMAKE_CACHE_ARGS
-DCMAKE_C_COMPILER:STRING=${CMAKE_C_COMPILER}
-DCMAKE_CXX_COMPILER:STRING=${CMAKE_CXX_COMPILER}
-DCMAKE_CXX_FLAGS:STRING=${BENCHMARK_NATIVE_TARGET_FLAGS}
-DCMAKE_BUILD_TYPE:STRING=RELEASE
-DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
-DBENCHMARK_ENABLE_TESTING:BOOL=OFF)
endif()
#==============================================================================
# Benchmark tests configuration
#==============================================================================
add_custom_target(cxx-benchmarks)
set(BENCHMARK_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR})
set(BENCHMARK_LIBCXX_INSTALL ${CMAKE_CURRENT_BINARY_DIR}/benchmark-libcxx)
set(BENCHMARK_NATIVE_INSTALL ${CMAKE_CURRENT_BINARY_DIR}/benchmark-native)
add_library( cxx-benchmarks-flags INTERFACE)
target_compile_features( cxx-benchmarks-flags INTERFACE cxx_std_20)
target_compile_options( cxx-benchmarks-flags INTERFACE -fsized-deallocation -nostdinc++)
target_include_directories(cxx-benchmarks-flags INTERFACE "${LIBCXX_GENERATED_INCLUDE_DIR}"
INTERFACE "${BENCHMARK_LIBCXX_INSTALL}/include"
INTERFACE "${LIBCXX_SOURCE_DIR}/test/support")
add_library( cxx-benchmarks-flags-native INTERFACE)
target_link_libraries( cxx-benchmarks-flags-native INTERFACE cxx-benchmarks-flags)
target_compile_options(cxx-benchmarks-flags-native INTERFACE ${BENCHMARK_NATIVE_TARGET_FLAGS})
target_link_options( cxx-benchmarks-flags-native INTERFACE ${BENCHMARK_NATIVE_TARGET_FLAGS} "-L${BENCHMARK_NATIVE_INSTALL}/lib")
if (LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libstdc++")
find_library(LIBSTDCXX_FILESYSTEM_TEST stdc++fs
PATHS ${LIBCXX_BENCHMARK_NATIVE_GCC_TOOLCHAIN}
PATH_SUFFIXES lib lib64
DOC "The libstdc++ filesystem library used by the benchmarks"
)
if (LIBSTDCXX_FILESYSTEM_TEST)
target_link_libraries(cxx-benchmarks-flags-native INTERFACE -lstdc++fs)
endif()
else()
target_link_libraries(cxx-benchmarks-flags-native INTERFACE -lc++fs -lc++experimental)
endif()
add_library( cxx-benchmarks-flags-libcxx INTERFACE)
target_link_libraries( cxx-benchmarks-flags-libcxx INTERFACE cxx-benchmarks-flags)
target_compile_options(cxx-benchmarks-flags-libcxx INTERFACE ${SANITIZER_FLAGS} -Wno-user-defined-literals -Wno-suggest-override)
target_link_options( cxx-benchmarks-flags-libcxx INTERFACE -nodefaultlibs "-L${BENCHMARK_LIBCXX_INSTALL}/lib" ${SANITIZER_FLAGS})
set(libcxx_benchmark_targets)
function(add_benchmark_test name source_file)
set(libcxx_target ${name}_libcxx)
list(APPEND libcxx_benchmark_targets ${libcxx_target})
add_executable(${libcxx_target} EXCLUDE_FROM_ALL ${source_file})
target_link_libraries(${libcxx_target} PRIVATE cxx-benchmarks-flags-libcxx)
add_dependencies(${libcxx_target} cxx google-benchmark-libcxx)
add_dependencies(cxx-benchmarks ${libcxx_target})
if (LIBCXX_ENABLE_SHARED)
target_link_libraries(${libcxx_target} PRIVATE cxx_shared)
else()
target_link_libraries(${libcxx_target} PRIVATE cxx_static)
endif()
target_link_libraries(${libcxx_target} PRIVATE cxx_experimental benchmark)
if (LLVM_USE_SANITIZER)
target_link_libraries(${libcxx_target} PRIVATE -ldl)
endif()
set_target_properties(${libcxx_target}
PROPERTIES
OUTPUT_NAME "${name}.libcxx.out"
RUNTIME_OUTPUT_DIRECTORY "${BENCHMARK_OUTPUT_DIR}"
CXX_EXTENSIONS NO)
cxx_link_system_libraries(${libcxx_target})
if (LIBCXX_BENCHMARK_NATIVE_STDLIB)
set(native_target ${name}_native)
add_executable(${native_target} EXCLUDE_FROM_ALL ${source_file})
target_link_libraries(${native_target} PRIVATE cxx-benchmarks-flags-native)
add_dependencies(${native_target} google-benchmark-native
google-benchmark-libcxx)
target_link_libraries(${native_target} PRIVATE -lbenchmark)
if (LIBCXX_HAS_PTHREAD_LIB)
target_link_libraries(${native_target} PRIVATE -pthread)
endif()
add_dependencies(cxx-benchmarks ${native_target})
set_target_properties(${native_target}
PROPERTIES
OUTPUT_NAME "${name}.native.out"
RUNTIME_OUTPUT_DIRECTORY "${BENCHMARK_OUTPUT_DIR}"
CXX_EXTENSIONS NO)
endif()
endfunction()
#==============================================================================
# Register Benchmark tests
#==============================================================================
set(BENCHMARK_TESTS
algorithms.partition_point.bench.cpp
algorithms/lower_bound.bench.cpp
algorithms/make_heap.bench.cpp
algorithms/make_heap_then_sort_heap.bench.cpp
algorithms/min_max_element.bench.cpp
algorithms/pop_heap.bench.cpp
algorithms/push_heap.bench.cpp
algorithms/ranges_make_heap.bench.cpp
algorithms/ranges_make_heap_then_sort_heap.bench.cpp
algorithms/ranges_pop_heap.bench.cpp
algorithms/ranges_push_heap.bench.cpp
algorithms/ranges_sort.bench.cpp
algorithms/ranges_sort_heap.bench.cpp
algorithms/ranges_stable_sort.bench.cpp
algorithms/sort.bench.cpp
algorithms/sort_heap.bench.cpp
algorithms/stable_sort.bench.cpp
allocation.bench.cpp
deque.bench.cpp
filesystem.bench.cpp
format_to_n.bench.cpp
format_to.bench.cpp
format.bench.cpp
formatted_size.bench.cpp
formatter_float.bench.cpp
formatter_int.bench.cpp
function.bench.cpp
map.bench.cpp
ordered_set.bench.cpp
std_format_spec_string_unicode.bench.cpp
string.bench.cpp
stringstream.bench.cpp
to_chars.bench.cpp
unordered_set_operations.bench.cpp
util_smartptr.bench.cpp
variant_visit_1.bench.cpp
variant_visit_2.bench.cpp
variant_visit_3.bench.cpp
vector_operations.bench.cpp
)
foreach(test_path ${BENCHMARK_TESTS})
get_filename_component(test_file "${test_path}" NAME)
string(REPLACE ".bench.cpp" "" test_name "${test_file}")
if (NOT DEFINED ${test_name}_REPORTED)
message(STATUS "Adding Benchmark: ${test_file}")
# Only report the adding of the benchmark once.
set(${test_name}_REPORTED ON CACHE INTERNAL "")
endif()
add_benchmark_test(${test_name} ${test_path})
endforeach()
if (LIBCXX_INCLUDE_TESTS)
include(AddLLVM)
if (NOT DEFINED LIBCXX_TEST_DEPS)
message(FATAL_ERROR "Expected LIBCXX_TEST_DEPS to be defined")
endif()
configure_lit_site_cfg(
${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.py.in
${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg.py)
set(BENCHMARK_LIT_ARGS "--show-all --show-xfail --show-unsupported ${LIT_ARGS_DEFAULT}")
add_lit_target(check-cxx-benchmarks
"Running libcxx benchmarks tests"
${CMAKE_CURRENT_BINARY_DIR}
DEPENDS cxx-benchmarks ${LIBCXX_TEST_DEPS}
ARGS ${BENCHMARK_LIT_ARGS})
endif()
|
