summaryrefslogtreecommitdiffstats
path: root/src/cmake/cpu.cmake
diff options
context:
space:
mode:
Diffstat (limited to 'src/cmake/cpu.cmake')
-rw-r--r--src/cmake/cpu.cmake44
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()
+