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set(CLANG_SUPPORTED_VERSION "5.0.0")
set(GCC_SUPPORTED_VERSION "5.5.0")
if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL ${CLANG_SUPPORTED_VERSION})
message (WARNING
"Unsupported Clang version " ${CMAKE_CXX_COMPILER_VERSION}
". Expected is " ${CLANG_SUPPORTED_VERSION}
". Assembly tests may be broken.")
endif()
elseif(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL ${GCC_SUPPORTED_VERSION})
message (WARNING
"Unsupported GCC version " ${CMAKE_CXX_COMPILER_VERSION}
". Expected is " ${GCC_SUPPORTED_VERSION}
". Assembly tests may be broken.")
endif()
else()
message (WARNING "Unsupported compiler. Assembly tests may be broken.")
endif()
include(split_list)
set(ASM_TEST_FLAGS "")
check_cxx_compiler_flag(-O3 BENCHMARK_HAS_O3_FLAG)
if (BENCHMARK_HAS_O3_FLAG)
list(APPEND ASM_TEST_FLAGS -O3)
endif()
check_cxx_compiler_flag(-g0 BENCHMARK_HAS_G0_FLAG)
if (BENCHMARK_HAS_G0_FLAG)
list(APPEND ASM_TEST_FLAGS -g0)
endif()
check_cxx_compiler_flag(-fno-stack-protector BENCHMARK_HAS_FNO_STACK_PROTECTOR_FLAG)
if (BENCHMARK_HAS_FNO_STACK_PROTECTOR_FLAG)
list(APPEND ASM_TEST_FLAGS -fno-stack-protector)
endif()
split_list(ASM_TEST_FLAGS)
string(TOUPPER "${CMAKE_CXX_COMPILER_ID}" ASM_TEST_COMPILER)
macro(add_filecheck_test name)
cmake_parse_arguments(ARG "" "" "CHECK_PREFIXES" ${ARGV})
add_library(${name} OBJECT ${name}.cc)
target_link_libraries(${name} PRIVATE benchmark::benchmark)
set_target_properties(${name} PROPERTIES COMPILE_FLAGS "-S ${ASM_TEST_FLAGS}")
set(ASM_OUTPUT_FILE "${CMAKE_CURRENT_BINARY_DIR}/${name}.s")
add_custom_target(copy_${name} ALL
COMMAND ${PROJECT_SOURCE_DIR}/tools/strip_asm.py
$<TARGET_OBJECTS:${name}>
${ASM_OUTPUT_FILE}
BYPRODUCTS ${ASM_OUTPUT_FILE})
add_dependencies(copy_${name} ${name})
if (NOT ARG_CHECK_PREFIXES)
set(ARG_CHECK_PREFIXES "CHECK")
endif()
foreach(prefix ${ARG_CHECK_PREFIXES})
add_test(NAME run_${name}_${prefix}
COMMAND
${LLVM_FILECHECK_EXE} ${name}.cc
--input-file=${ASM_OUTPUT_FILE}
--check-prefixes=CHECK,CHECK-${ASM_TEST_COMPILER}
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
endforeach()
endmacro()
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