4cb6c1c7cb
Summary: There were a few tests that weren't enabled on the GPU. This is because the logic caused them to be skipped as we don't use CPU featured on the host. This also disables the logic making multiple versions of the memory functions.
76 lines
2.5 KiB
CMake
76 lines
2.5 KiB
CMake
# ------------------------------------------------------------------------------
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# Cpu features definition and flags
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# ------------------------------------------------------------------------------
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# Initialize ALL_CPU_FEATURES as empty list.
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set(ALL_CPU_FEATURES "")
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if(${LIBC_TARGET_ARCHITECTURE_IS_X86})
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set(ALL_CPU_FEATURES SSE2 SSE4_2 AVX AVX2 AVX512F AVX512BW FMA)
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set(LIBC_COMPILE_OPTIONS_NATIVE -march=native)
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elseif(${LIBC_TARGET_ARCHITECTURE_IS_AARCH64})
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set(LIBC_COMPILE_OPTIONS_NATIVE -mcpu=native)
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endif()
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# Making sure ALL_CPU_FEATURES is sorted.
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list(SORT ALL_CPU_FEATURES)
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# Function to check whether the target CPU supports the provided set of features.
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# Usage:
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# cpu_supports(
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# <output variable>
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# <list of cpu features>
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# )
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function(cpu_supports output_var features)
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_intersection(var "${LIBC_CPU_FEATURES}" "${features}")
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if("${var}" STREQUAL "${features}")
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set(${output_var} TRUE PARENT_SCOPE)
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else()
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unset(${output_var} PARENT_SCOPE)
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endif()
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endfunction()
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# ------------------------------------------------------------------------------
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# Internal helpers and utilities.
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# ------------------------------------------------------------------------------
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# Computes the intersection between two lists.
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function(_intersection output_var list1 list2)
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foreach(element IN LISTS list1)
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if("${list2}" MATCHES "(^|;)${element}(;|$)")
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list(APPEND tmp "${element}")
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endif()
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endforeach()
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set(${output_var} ${tmp} PARENT_SCOPE)
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endfunction()
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set(AVAILABLE_CPU_FEATURES "")
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if(LIBC_CROSSBUILD)
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# If we are doing a cross build, we will just assume that all CPU features
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# are available.
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set(AVAILABLE_CPU_FEATURES ${ALL_CPU_FEATURES})
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else()
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# Try compile a C file to check if flag is supported.
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set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
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foreach(feature IN LISTS ALL_CPU_FEATURES)
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try_compile(
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has_feature
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${CMAKE_CURRENT_BINARY_DIR}/cpu_features
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SOURCES ${LIBC_SOURCE_DIR}/cmake/modules/cpu_features/check_${feature}.cpp
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COMPILE_DEFINITIONS -I${LIBC_SOURCE_DIR} ${LIBC_COMPILE_OPTIONS_NATIVE}
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)
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if(has_feature)
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list(APPEND AVAILABLE_CPU_FEATURES ${feature})
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endif()
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endforeach()
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endif()
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set(LIBC_CPU_FEATURES ${AVAILABLE_CPU_FEATURES} CACHE STRING "Host supported CPU features")
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_intersection(cpu_features "${AVAILABLE_CPU_FEATURES}" "${LIBC_CPU_FEATURES}")
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if(NOT "${cpu_features}" STREQUAL "${LIBC_CPU_FEATURES}")
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message(FATAL_ERROR "Unsupported CPU features: ${cpu_features}")
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else()
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message(STATUS "Set CPU features: ${cpu_features}")
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endif()
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