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Merge pull request #125 from abondarev84/master

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cmake change for correct placement of autodetected tune & arch flags of GCC and SVE enablement on AARCH64
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Konstantinos Margaritis 2022-09-19 12:44:14 +03:00 committed by GitHub
commit 00d1807bb4
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1 changed files with 40 additions and 13 deletions
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53
CMakeLists.txt
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@ -166,27 +166,49 @@ if (CMAKE_COMPILER_IS_GNUCC AND NOT CROSS_COMPILE)
# cpuid info and then chooses the best microarch it can (and replaces
# the flag), so use that for tune.
set(TUNE_FLAG "mtune")
set(GNUCC_TUNE "")
message(STATUS "ARCH_FLAG '${ARCH_FLAG}' '${GNUCC_ARCH}', TUNE_FLAG '${TUNE_FLAG}' '${GNUCC_TUNE}' ")
# arg1 might exist if using ccache
string (STRIP "${CMAKE_C_COMPILER_ARG1}" CC_ARG1)
set (EXEC_ARGS ${CC_ARG1} -c -Q --help=target -${ARCH_FLAG}=native -mtune=native)
set (EXEC_ARGS ${CC_ARG1} -c -Q --help=target -${ARCH_FLAG}=native -${TUNE_FLAG}=native)
execute_process(COMMAND ${CMAKE_C_COMPILER} ${EXEC_ARGS}
OUTPUT_VARIABLE _GCC_OUTPUT)
string(FIND "${_GCC_OUTPUT}" "${ARCH_FLAG}" POS)
set(_GCC_OUTPUT_TUNE ${_GCC_OUTPUT})
string(FIND "${_GCC_OUTPUT}" "${ARCH_FLAG}=" POS)
string(SUBSTRING "${_GCC_OUTPUT}" ${POS} -1 _GCC_OUTPUT)
string(REGEX REPLACE "${ARCH_FLAG}=[ \t]*([^ \n]*)[ \n].*" "\\1" GNUCC_ARCH "${_GCC_OUTPUT}")
string(FIND "${_GCC_OUTPUT_TUNE}" "${TUNE_FLAG}=" POS_TUNE)
string(SUBSTRING "${_GCC_OUTPUT_TUNE}" ${POS_TUNE} -1 _GCC_OUTPUT_TUNE)
string(REGEX REPLACE "${TUNE_FLAG}=[ \t]*([^ \n]*)[ \n].*" "\\1" GNUCC_TUNE "${_GCC_OUTPUT_TUNE}")
string(FIND "${GNUCC_ARCH}" "sve" POS_SVE)
string(FIND "${GNUCC_ARCH}" "sve2" POS_SVE2)
string(FIND "${GNUCC_ARCH}" "sve2-bitperm" POS_SVE2_BITPERM)
if (NOT POS_SVE EQUAL 0)
set(SVE_FOUND 1)
elseif(NOT POS_SVE2 EQUAL 0)
set(SVE2_FOUND 1)
elseif(NOT POS_SVE2_BITPERM EQUAL 0)
set(SVE2_BITPERM_FOUND 1)
endif()
message(STATUS "ARCH_FLAG '${ARCH_FLAG}' '${GNUCC_ARCH}', TUNE_FLAG '${TUNE_FLAG}' '${GNUCC_TUNE}' ")
# test the parsed flag
set (EXEC_ARGS ${CC_ARG1} -E - -mtune=${GNUCC_ARCH})
set (EXEC_ARGS ${CC_ARG1} -E - -${ARCH_FLAG}=${GNUCC_ARCH} -${TUNE_FLAG}=${GNUCC_TUNE})
execute_process(COMMAND ${CMAKE_C_COMPILER} ${EXEC_ARGS}
OUTPUT_QUIET ERROR_QUIET
INPUT_FILE /dev/null
RESULT_VARIABLE GNUCC_TUNE_TEST)
if (NOT GNUCC_TUNE_TEST EQUAL 0)
message(WARNING "Something went wrong determining gcc tune: -mtune=${GNUCC_ARCH} not valid, falling back to -mtune=native")
set(TUNE_FLAG native)
message(WARNING "Something went wrong determining gcc tune: -mtune=${GNUCC_TUNE} not valid, falling back to -mtune=native")
set(GNUCC_TUNE native)
else()
set(TUNE_FLAG ${GNUCC_ARCH})
message(STATUS "gcc will tune for ${GNUCC_ARCH}, ${TUNE_FLAG}")
set(GNUCC_TUNE ${GNUCC_TUNE})
message(STATUS "gcc will tune for ${GNUCC_ARCH}, ${GNUCC_TUNE}")
endif()
elseif (CMAKE_COMPILER_IS_CLANG AND NOT CROSS_COMPILE)
if (ARCH_IA32 OR ARCH_X86_64)
@ -227,22 +249,26 @@ if (ARCH_IA32 OR ARCH_X86_64)
endif()
if (ARCH_AARCH64)
if (BUILD_SVE2_BITPERM)
if (BUILD_SVE2_BITPERM AND NOT SVE2_BITPERM_FOUND)
set(GNUCC_ARCH "${GNUCC_ARCH}+sve2-bitperm")
elseif (BUILD_SVE2)
elseif (BUILD_SVE2 AND NOT SVE2_FOUND)
set(GNUCC_ARCH "${GNUCC_ARCH}+sve2")
elseif (BUILD_SVE)
elseif (BUILD_SVE AND NOT SVE_FOUND)
set(GNUCC_ARCH "${GNUCC_ARCH}+sve")
endif ()
endif(ARCH_AARCH64)
message(STATUS "ARCH_C_FLAGS : ${ARCH_C_FLAGS}")
message(STATUS "ARCH_CXX_FLAGS : ${ARCH_CXX_FLAGS}")
if (NOT FAT_RUNTIME)
set(ARCH_C_FLAGS "-${ARCH_FLAG}=${GNUCC_ARCH} -mtune=${TUNE_FLAG} ${ARCH_C_FLAGS}")
set(ARCH_CXX_FLAGS "-${ARCH_FLAG}=${GNUCC_ARCH} -mtune=${TUNE_FLAG} ${ARCH_CXX_FLAGS}")
if (GNUCC_TUNE)
set(ARCH_C_FLAGS "-${ARCH_FLAG}=${GNUCC_ARCH} -${TUNE_FLAG}=${GNUCC_TUNE}")
set(ARCH_CXX_FLAGS "-${ARCH_FLAG}=${GNUCC_ARCH} -${TUNE_FLAG}=${GNUCC_TUNE}")
else()
set(ARCH_C_FLAGS "-${ARCH_FLAG}=${GNUCC_ARCH} -mtune=${TUNE_FLAG} ${ARCH_C_FLAGS}")
set(ARCH_CXX_FLAGS "-${ARCH_FLAG}=${GNUCC_ARCH} -mtune=${TUNE_FLAG} ${ARCH_CXX_FLAGS}")
endif()
endif()
#if (ARCH_IA32 OR ARCH_X86_64 OR ARCH_ARM32 OR ARCH_AARCH64)
@ -339,6 +365,7 @@ if (ARCH_IA32 OR ARCH_X86_64)
elseif (ARCH_ARM32 OR ARCH_AARCH64)
CHECK_INCLUDE_FILE_CXX(arm_neon.h HAVE_C_ARM_NEON_H)
if (BUILD_SVE OR BUILD_SVE2 OR BUILD_SVE2_BITPERM)
set(CMAKE_REQUIRED_FLAGS ${ARCH_CXX_FLAGS})
CHECK_INCLUDE_FILE_CXX(arm_sve.h HAVE_C_ARM_SVE_H)
if (NOT HAVE_C_ARM_SVE_H)
message(FATAL_ERROR "arm_sve.h is required to build for SVE.")