| cmake_minimum_required(VERSION 3.18) |
| project(DeviceLTO CUDA) |
| |
| # Goal: |
| # Verify that we correctly compile with device LTO |
| # Verify that device LTO requirements are propagated to |
| # the final device link line |
| |
| add_library(CUDA_dlto STATIC file1.cu file2.cu file3.cu) |
| add_executable(CudaOnlyDeviceLTO main.cu) |
| |
| set(archs_to_test "${CMAKE_CUDA_ARCHITECTURES_ALL}") |
| if(CMAKE_CUDA_COMPILER_ID STREQUAL "NVIDIA") |
| # Also test with at least one virtual architecture. |
| list(POP_BACK CMAKE_CUDA_ARCHITECTURES_ALL_MAJOR latest_arch) |
| list(APPEND archs_to_test ${latest_arch}-virtual) |
| endif() |
| |
| set_target_properties(CUDA_dlto |
| PROPERTIES |
| CUDA_ARCHITECTURES "${archs_to_test}" |
| CUDA_SEPARABLE_COMPILATION ON |
| POSITION_INDEPENDENT_CODE ON) |
| |
| set_target_properties(CudaOnlyDeviceLTO |
| PROPERTIES |
| CUDA_SEPARABLE_COMPILATION ON |
| CUDA_ARCHITECTURES "${archs_to_test}" |
| ) |
| |
| target_link_libraries(CudaOnlyDeviceLTO PRIVATE CUDA_dlto) |
| |
| include(CheckIPOSupported) |
| check_ipo_supported(LANGUAGES CUDA RESULT ipo_supported) |
| if(ipo_supported) |
| set_target_properties(CUDA_dlto |
| PROPERTIES |
| INTERPROCEDURAL_OPTIMIZATION ON) |
| |
| # When non-LTO variants (i.e. virtual) are built together with LTO ones the |
| # linker warns about missing device LTO for the virtual architectures. |
| # Ignore these warnings. |
| target_link_options(CudaOnlyDeviceLTO PRIVATE "$<DEVICE_LINK:-w>") |
| endif() |
