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1set(CLANG_SUPPORTED_VERSION "5.0.0")2set(GCC_SUPPORTED_VERSION "5.5.0")3 4if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")5 if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL ${CLANG_SUPPORTED_VERSION})6 message (WARNING7 "Unsupported Clang version " ${CMAKE_CXX_COMPILER_VERSION}8 ". Expected is " ${CLANG_SUPPORTED_VERSION}9 ". Assembly tests may be broken.")10 endif()11elseif(CMAKE_CXX_COMPILER_ID MATCHES "GNU")12 if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL ${GCC_SUPPORTED_VERSION})13 message (WARNING14 "Unsupported GCC version " ${CMAKE_CXX_COMPILER_VERSION}15 ". Expected is " ${GCC_SUPPORTED_VERSION}16 ". Assembly tests may be broken.")17 endif()18else()19 message (WARNING "Unsupported compiler. Assembly tests may be broken.")20endif()21 22include(split_list)23 24set(ASM_TEST_FLAGS "")25check_cxx_compiler_flag(-O3 BENCHMARK_HAS_O3_FLAG)26if (BENCHMARK_HAS_O3_FLAG)27 list(APPEND ASM_TEST_FLAGS -O3)28endif()29 30check_cxx_compiler_flag(-g0 BENCHMARK_HAS_G0_FLAG)31if (BENCHMARK_HAS_G0_FLAG)32 list(APPEND ASM_TEST_FLAGS -g0)33endif()34 35check_cxx_compiler_flag(-fno-stack-protector BENCHMARK_HAS_FNO_STACK_PROTECTOR_FLAG)36if (BENCHMARK_HAS_FNO_STACK_PROTECTOR_FLAG)37 list(APPEND ASM_TEST_FLAGS -fno-stack-protector)38endif()39 40split_list(ASM_TEST_FLAGS)41string(TOUPPER "${CMAKE_CXX_COMPILER_ID}" ASM_TEST_COMPILER)42 43macro(add_filecheck_test name)44 cmake_parse_arguments(ARG "" "" "CHECK_PREFIXES" ${ARGV})45 add_library(${name} OBJECT ${name}.cc)46 target_link_libraries(${name} PRIVATE benchmark::benchmark)47 set_target_properties(${name} PROPERTIES COMPILE_FLAGS "-S ${ASM_TEST_FLAGS}")48 set(ASM_OUTPUT_FILE "${CMAKE_CURRENT_BINARY_DIR}/${name}.s")49 add_custom_target(copy_${name} ALL50 COMMAND ${PROJECT_SOURCE_DIR}/tools/strip_asm.py51 $<TARGET_OBJECTS:${name}>52 ${ASM_OUTPUT_FILE}53 BYPRODUCTS ${ASM_OUTPUT_FILE})54 add_dependencies(copy_${name} ${name})55 if (NOT ARG_CHECK_PREFIXES)56 set(ARG_CHECK_PREFIXES "CHECK")57 endif()58 foreach(prefix ${ARG_CHECK_PREFIXES})59 add_test(NAME run_${name}_${prefix}60 COMMAND61 ${LLVM_FILECHECK_EXE} ${name}.cc62 --input-file=${ASM_OUTPUT_FILE}63 --check-prefixes=CHECK,CHECK-${ASM_TEST_COMPILER}64 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})65 endforeach()66endmacro()67 68