qt5base-lts/cmake/QtSimdHelpers.cmake
Alexandru Croitor e0c62a48b8 CMake: Rename internal functions to contain qt_internal
Offer compatibility wrapper functions until we update all of the Qt
repos to use the new names.

Task-number: QTBUG-86815
Change-Id: I5826a4116f52a8509db32601ef7c200f9bd331de
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
2020-09-23 16:59:05 +02:00

82 lines
3.7 KiB
CMake

# Handle files that need special SIMD-related flags.
# This creates an object library and makes target link
# to it (privately).
function(qt_internal_add_simd_part target)
qt_parse_all_arguments(arg "qt_add_simd_part" "" ""
"NAME;SIMD;${__default_private_args};COMPILE_FLAGS" ${ARGN})
if ("x${arg_SIMD}" STREQUAL x)
message(FATAL_ERROR "qt_add_simd_part needs a SIMD type to be set.")
endif()
set(condition "QT_FEATURE_${arg_SIMD}")
string(TOUPPER "QT_CFLAGS_${arg_SIMD}" simd_flags_var_name)
set(simd_flags_expanded "")
# As per mkspecs/features/simd.prf, the arch_haswell SIMD compiler is enabled when
# qmake's CONFIG contains "avx2", which maps to CMake's QT_FEATURE_avx2.
# The list of dependencies 'avx2 bmi bmi2 f16c fma lzcnt popcnt' only influences whether
# the 'arch_haswell' SIMD flags need to be added explicitly to the compiler invocation.
# If the compiler adds them implicitly, they must be present in qmake's QT_CPU_FEATURES as
# detected by the architecture test, and thus they are present in TEST_subarch_result.
if("${arg_SIMD}" STREQUAL arch_haswell)
set(condition "QT_FEATURE_avx2")
# Use avx2 flags as per simd.prf, if there are no specific arch_haswell flags specified in
# QtCompilerOptimization.cmake.
if("${simd_flags_var_name}" STREQUAL "")
set(simd_flags_var_name "QT_CFLAGS_AVX2")
endif()
# The avx512 profiles dependencies DO influence if the SIMD compiler will be executed,
# so each of the profile dependencies have to be in qmake's CONFIG for the compiler to be
# enabled, which means the CMake features have to evaluate to true.
# Also the profile flags to be used are a combination of arch_haswell, avx512f and each of the
# dependencies.
elseif("${arg_SIMD}" STREQUAL avx512common)
set(condition "QT_FEATURE_avx512cd")
list(APPEND simd_flags_expanded "${QT_CFLAGS_ARCH_HASWELL}")
list(APPEND simd_flags_expanded "${QT_CFLAGS_AVX512F}")
list(APPEND simd_flags_expanded "${QT_CFLAGS_AVX512CD}")
list(REMOVE_DUPLICATES simd_flags_expanded)
elseif("${arg_SIMD}" STREQUAL avx512core)
set(condition "QT_FEATURE_avx512cd AND QT_FEATURE_avx512bw AND QT_FEATURE_avx512dq AND QT_FEATURE_avx512vl")
list(APPEND simd_flags_expanded "${QT_CFLAGS_ARCH_HASWELL}")
list(APPEND simd_flags_expanded "${QT_CFLAGS_AVX512F}")
list(APPEND simd_flags_expanded "${QT_CFLAGS_AVX512CD}")
list(APPEND simd_flags_expanded "${QT_CFLAGS_AVX512BW}")
list(APPEND simd_flags_expanded "${QT_CFLAGS_AVX512DQ}")
list(APPEND simd_flags_expanded "${QT_CFLAGS_AVX512VL}")
list(REMOVE_DUPLICATES simd_flags_expanded)
endif()
set(name "${arg_NAME}")
if("x${name}" STREQUAL x)
set(name "${target}_simd_${arg_SIMD}")
endif()
qt_evaluate_config_expression(result ${condition})
if(${result})
if(QT_CMAKE_DEBUG_EXTEND_TARGET)
message("qt_add_simd_part(${target} SIMD ${arg_SIMD} ...): Evaluated")
endif()
if(NOT simd_flags_expanded)
set(simd_flags_expanded "${${simd_flags_var_name}}")
endif()
foreach(source IN LISTS arg_SOURCES)
set_property(SOURCE "${source}" APPEND
PROPERTY COMPILE_OPTIONS
${simd_flags_expanded}
${arg_COMPILE_FLAGS}
)
endforeach()
set_source_files_properties(${arg_SOURCES} PROPERTIES SKIP_PRECOMPILE_HEADERS TRUE)
target_sources(${target} PRIVATE ${arg_SOURCES})
else()
if(QT_CMAKE_DEBUG_EXTEND_TARGET)
message("qt_add_simd_part(${target} SIMD ${arg_SIMD} ...): Skipped")
endif()
endif()
endfunction()