2022-11-16 20:14:03 +01:00
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cmake_minimum_required(VERSION 3.18)
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project(DeviceLTO CUDA)
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# Goal:
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# Verify that we correctly compile with device LTO
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# Verify that device LTO requirements are propagated to
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# the final device link line
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add_library(CUDA_dlto STATIC file1.cu file2.cu file3.cu)
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add_executable(CudaOnlyDeviceLTO main.cu)
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2023-07-02 19:51:09 +02:00
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set(archs_to_test "${CMAKE_CUDA_ARCHITECTURES_ALL}")
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if(CMAKE_CUDA_COMPILER_ID STREQUAL "NVIDIA")
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# Also test with at least one virtual architecture.
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list(POP_BACK CMAKE_CUDA_ARCHITECTURES_ALL_MAJOR latest_arch)
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list(APPEND archs_to_test ${latest_arch}-virtual)
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endif()
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2022-11-16 20:14:03 +01:00
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set_target_properties(CUDA_dlto
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PROPERTIES
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2023-07-02 19:51:09 +02:00
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CUDA_ARCHITECTURES "${archs_to_test}"
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2022-11-16 20:14:03 +01:00
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CUDA_SEPARABLE_COMPILATION ON
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POSITION_INDEPENDENT_CODE ON)
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set_target_properties(CudaOnlyDeviceLTO
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PROPERTIES
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CUDA_SEPARABLE_COMPILATION ON
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2023-07-02 19:51:09 +02:00
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CUDA_ARCHITECTURES "${archs_to_test}"
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2022-11-16 20:14:03 +01:00
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)
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target_link_libraries(CudaOnlyDeviceLTO PRIVATE CUDA_dlto)
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include(CheckIPOSupported)
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check_ipo_supported(LANGUAGES CUDA RESULT ipo_supported)
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if(ipo_supported)
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set_target_properties(CUDA_dlto
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PROPERTIES
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INTERPROCEDURAL_OPTIMIZATION ON)
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# When non-LTO variants (i.e. virtual) are built together with LTO ones the
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# linker warns about missing device LTO for the virtual architectures.
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# Ignore these warnings.
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target_link_options(CudaOnlyDeviceLTO PRIVATE "$<DEVICE_LINK:-w>")
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endif()
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