Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

test availability of -march=native with clang #105

Open
wants to merge 2 commits into
base: master
Choose a base branch
from
Open

test availability of -march=native with clang #105

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
e7edabe
test availability of -march=native
JoachimSchurig Oct 5, 2023
6328c80
test availability of -march=native
JoachimSchurig Oct 5, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
26 changes: 24 additions & 2 deletions CMakeLists.txt
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -358,7 +358,29 @@ else(MSVC)
--post-js ${CMAKE_SOURCE_DIR}/wasm/post-module.js \
--shell-file ${CMAKE_SOURCE_DIR}/wasm/custom_shell.html")
else(COMPILE_WASM)
set(CMAKE_CXX_FLAGS "-std=c++11 -pthread ${CMAKE_GCC_FLAGS} -fPIC ${DISABLE_GLOBALLY} -march=${BUILD_ARCH} ${INTRINSICS} ${BUILD_WIDTH}")
if (BUILD_ARCH STREQUAL "native" AND CMAKE_CXX_COMPILER_ID MATCHES "Clang")
# clang does not support -march=native on all platforms
set(TEST_FILE_NAME "test_march.c")
set(TEST_FILES_DIR "${CMAKE_CURRENT_BINARY_DIR}/test_march_dir")
file(MAKE_DIRECTORY "${TEST_FILES_DIR}")
FILE(WRITE "${TEST_FILES_DIR}/${TEST_FILE_NAME}" "int main() { return 0; }")
EXECUTE_PROCESS(
WORKING_DIRECTORY "${TEST_FILES_DIR}"
COMMAND clang -march=native "${TEST_FILE_NAME}" -o test
RESULT_VARIABLE MARCH_RESULT
ERROR_QUIET
)
FILE(REMOVE_RECURSE "${TEST_FILES_DIR}")
if (MARCH_RESULT EQUAL 0)
set(BUILD_FOR "-march=native")
else()
set(BUILD_FOR "-mtune=native -mcpu=native")
endif()
else()
set(BUILD_FOR "-march=${BUILD_ARCH}")
endif()

set(CMAKE_CXX_FLAGS "-std=c++11 -pthread ${CMAKE_GCC_FLAGS} -fPIC ${DISABLE_GLOBALLY} ${BUILD_FOR} ${INTRINSICS} ${BUILD_WIDTH}")
set(CMAKE_CXX_FLAGS_RELEASE "-O3 ${BUILD_WIDTH} -funroll-loops")
set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g ${CMAKE_RDYNAMIC_FLAG}")
set(CMAKE_CXX_FLAGS_SLIM "-O3 ${BUILD_WIDTH} -funroll-loops -DNDEBUG")
Expand All @@ -368,7 +390,7 @@ else(MSVC)
set(CMAKE_CXX_FLAGS_PROFUSE "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -fprofile-use -fprofile-correction")

# these need to be set separately
set(CMAKE_C_FLAGS "-pthread ${CMAKE_GCC_FLAGS} -fPIC ${DISABLE_GLOBALLY} -march=${BUILD_ARCH} ${INTRINSICS}")
set(CMAKE_C_FLAGS "-pthread ${CMAKE_GCC_FLAGS} -fPIC ${DISABLE_GLOBALLY} ${BUILD_FOR} ${INTRINSICS}")
set(CMAKE_C_FLAGS_RELEASE "-O3 ${BUILD_WIDTH} -funroll-loops")
set(CMAKE_C_FLAGS_DEBUG "-O0 -g ${CMAKE_RDYNAMIC_FLAG}")
set(CMAKE_C_FLAGS_SLIM "-O3 ${BUILD_WIDTH} -funroll-loops -DNDEBUG")
Expand Down