diff options
Diffstat (limited to 'src/cmake/cpu.cmake')
| -rw-r--r-- | src/cmake/cpu.cmake | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/cmake/cpu.cmake b/src/cmake/cpu.cmake new file mode 100644 index 00000000000..e0311cea2ee --- /dev/null +++ b/src/cmake/cpu.cmake @@ -0,0 +1,44 @@ +# Copyright (c) 2018 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +############################################################################## +# CPU optimizations and multiarch support +############################################################################## +if(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*") + set(CMAKE_C_FLAGS "-march=corei7 -mtune=corei7-avx ${CMAKE_C_FLAGS}") + check_c_compiler_flag("-march=core-avx2" AVX2) + if(AVX2) + list(APPEND MARCH_VARIANTS "avx2\;-march=core-avx2 -mtune=core-avx2") + endif() + check_c_compiler_flag("-march=skylake-avx512" AVX512) + if(AVX512) + list(APPEND MARCH_VARIANTS "avx512\;-march=skylake-avx512 -mtune=skylake-avx512") + endif() +elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64.*|AARCH64.*)") + set(CMAKE_C_FLAGS "-march=armv8-a+crc ${CMAKE_C_FLAGS}") +endif() + +macro(vpp_library_set_multiarch_sources lib) + foreach(V ${MARCH_VARIANTS}) + list(GET V 0 VARIANT) + list(GET V 1 VARIANT_FLAGS) + set(l ${lib}_${VARIANT}) + add_library(${l} OBJECT ${ARGN}) + set_target_properties(${l} PROPERTIES POSITION_INDEPENDENT_CODE ON) + target_compile_options(${l} PUBLIC "-DCLIB_MARCH_VARIANT=${VARIANT}") + separate_arguments(VARIANT_FLAGS) + target_compile_options(${l} PUBLIC ${VARIANT_FLAGS}) + target_sources(${lib} PRIVATE $<TARGET_OBJECTS:${l}>) + endforeach() +endmacro() + |