diff options
Diffstat (limited to 'libc/cmake/modules/LLVMLibCObjectRules.cmake')
| -rw-r--r-- | libc/cmake/modules/LLVMLibCObjectRules.cmake | 348 |
1 files changed, 78 insertions, 270 deletions
diff --git a/libc/cmake/modules/LLVMLibCObjectRules.cmake b/libc/cmake/modules/LLVMLibCObjectRules.cmake index 308ba7d..78536f4 100644 --- a/libc/cmake/modules/LLVMLibCObjectRules.cmake +++ b/libc/cmake/modules/LLVMLibCObjectRules.cmake @@ -1,175 +1,5 @@ set(OBJECT_LIBRARY_TARGET_TYPE "OBJECT_LIBRARY") -# Build the object target for a single GPU arch. -# Usage: -# _build_gpu_object_for_single_arch( -# <target_name> -# <gpu_arch> -# SRCS <list of .cpp files> -# HDRS <list of .h files> -# DEPENDS <list of dependencies> -# COMPILE_OPTIONS <optional list of special compile options for this target> -# FLAGS <optional list of flags> -# ) -function(_build_gpu_object_for_single_arch fq_target_name gpu_arch) - cmake_parse_arguments( - "ADD_GPU_OBJ" - "" # No optional arguments - "NAME;CXX_STANDARD" # Single value arguments - "SRCS;HDRS;DEPENDS;COMPILE_OPTIONS;FLAGS" # Multi value arguments - ${ARGN} - ) - - if(NOT ADD_GPU_OBJ_CXX_STANDARD) - set(ADD_GPU_OBJ_CXX_STANDARD ${CMAKE_CXX_STANDARD}) - endif() - - set(compile_options ${ADD_GPU_OBJ_COMPILE_OPTIONS}) - # Derive the triple from the specified architecture. - if("${gpu_arch}" IN_LIST all_amdgpu_architectures) - set(gpu_target_triple ${AMDGPU_TARGET_TRIPLE}) - list(APPEND compile_options "-mcpu=${gpu_arch}") - list(APPEND compile_options "SHELL:-Xclang -mcode-object-version=none") - list(APPEND compile_options "-emit-llvm") - elseif("${gpu_arch}" IN_LIST all_nvptx_architectures) - set(gpu_target_triple ${NVPTX_TARGET_TRIPLE}) - get_nvptx_compile_options(nvptx_options ${gpu_arch}) - list(APPEND compile_options "${nvptx_options}") - else() - message(FATAL_ERROR "Unknown GPU architecture '${gpu_arch}'") - endif() - list(APPEND compile_options "--target=${gpu_target_triple}") - - # Build the library for this target architecture. We always emit LLVM-IR for - # packaged GPU binaries. - add_library(${fq_target_name} - EXCLUDE_FROM_ALL - OBJECT - ${ADD_GPU_OBJ_SRCS} - ${ADD_GPU_OBJ_HDRS} - ) - - target_compile_options(${fq_target_name} PRIVATE ${compile_options}) - target_include_directories(${fq_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR}) - target_include_directories(${fq_target_name} PRIVATE ${LIBC_SOURCE_DIR}) - set_target_properties(${fq_target_name} PROPERTIES CXX_STANDARD ${ADD_GPU_OBJ_CXX_STANDARD}) - if(ADD_GPU_OBJ_DEPENDS) - add_dependencies(${fq_target_name} ${ADD_GPU_OBJ_DEPENDS}) - set_target_properties(${fq_target_name} PROPERTIES DEPS "${ADD_GPU_OBJ_DEPENDS}") - endif() -endfunction(_build_gpu_object_for_single_arch) - -# Build the object target for the GPU. -# This compiles the target for all supported architectures and embeds it into -# host binary for installing. -# Usage: -# _build_gpu_object_bundle( -# <target_name> -# SRCS <list of .cpp files> -# HDRS <list of .h files> -# DEPENDS <list of dependencies> -# COMPILE_OPTIONS <optional list of special compile options for this target> -# FLAGS <optional list of flags> -# ) -function(_build_gpu_object_bundle fq_target_name) - cmake_parse_arguments( - "ADD_GPU_OBJ" - "" # No optional arguments - "NAME;CXX_STANDARD" # Single value arguments - "SRCS;HDRS;DEPENDS;COMPILE_OPTIONS;FLAGS" # Multi value arguments - ${ARGN} - ) - - if(NOT ADD_GPU_OBJ_CXX_STANDARD) - set(ADD_GPU_OBJ_CXX_STANDARD ${CMAKE_CXX_STANDARD}) - endif() - - foreach(add_gpu_obj_src ${ADD_GPU_OBJ_SRCS}) - # The packaged version will be built for every target GPU architecture. We do - # this so we can support multiple accelerators on the same machine. - foreach(gpu_arch ${LIBC_GPU_ARCHITECTURES}) - get_filename_component(src_name ${add_gpu_obj_src} NAME) - set(gpu_target_name ${fq_target_name}.${src_name}.${gpu_arch}) - - _build_gpu_object_for_single_arch( - ${gpu_target_name} - ${gpu_arch} - CXX_STANDARD ${ADD_GPU_OBJ_CXX_STANDARD} - HDRS ${ADD_GPU_OBJ_HDRS} - SRCS ${add_gpu_obj_src} - COMPILE_OPTIONS - ${ADD_GPU_OBJ_COMPILE_OPTIONS} - "-emit-llvm" - DEPENDS ${ADD_GPU_OBJ_DEPENDS} - ) - # Append this target to a list of images to package into a single binary. - set(input_file $<TARGET_OBJECTS:${gpu_target_name}>) - if("${gpu_arch}" IN_LIST all_nvptx_architectures) - get_nvptx_compile_options(nvptx_options ${gpu_arch}) - string(REGEX MATCH "\\+ptx[0-9]+" nvptx_ptx_feature ${nvptx_options}) - list(APPEND packager_images - --image=file=${input_file},arch=${gpu_arch},triple=${NVPTX_TARGET_TRIPLE},feature=${nvptx_ptx_feature}) - else() - list(APPEND packager_images - --image=file=${input_file},arch=${gpu_arch},triple=${AMDGPU_TARGET_TRIPLE}) - endif() - list(APPEND gpu_target_objects ${input_file}) - endforeach() - - # After building the target for the desired GPUs we must package the output - # into a fatbinary, see https://clang.llvm.org/docs/OffloadingDesign.html for - # more information. - set(packaged_target_name ${fq_target_name}.${src_name}.__gpu__) - set(packaged_output_name ${CMAKE_CURRENT_BINARY_DIR}/${fq_target_name}.${src_name}.gpubin) - - add_custom_command(OUTPUT ${packaged_output_name} - COMMAND ${LIBC_CLANG_OFFLOAD_PACKAGER} - ${packager_images} -o ${packaged_output_name} - DEPENDS ${gpu_target_objects} ${add_gpu_obj_src} ${ADD_GPU_OBJ_HDRS} - COMMENT "Packaging LLVM offloading binary") - add_custom_target(${packaged_target_name} DEPENDS ${packaged_output_name}) - list(APPEND packaged_gpu_names ${packaged_target_name}) - list(APPEND packaged_gpu_binaries ${packaged_output_name}) - endforeach() - - # We create an empty 'stub' file for the host to contain the embedded device - # code. This will be packaged into 'libcgpu.a'. - # TODO: In the future we will want to combine every architecture for a target - # into a single bitcode file and use that. For now we simply build for - # every single one and let the offloading linker handle it. - string(FIND ${fq_target_name} "." last_dot_loc REVERSE) - math(EXPR name_loc "${last_dot_loc} + 1") - string(SUBSTRING ${fq_target_name} ${name_loc} -1 target_name) - set(stub_filename "${target_name}.cpp") - add_custom_command( - OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/stubs/${stub_filename}" - COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/stubs/ - COMMAND ${CMAKE_COMMAND} -E touch ${CMAKE_CURRENT_BINARY_DIR}/stubs/${stub_filename} - DEPENDS ${gpu_target_objects} ${ADD_GPU_OBJ_SRCS} ${ADD_GPU_OBJ_HDRS} - ) - set(stub_target_name ${fq_target_name}.__stub__) - add_custom_target(${stub_target_name} DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/stubs/${stub_filename}) - - add_library( - ${fq_target_name} - # We want an object library as the objects will eventually get packaged into - # an archive (like libcgpu.a). - EXCLUDE_FROM_ALL - OBJECT - ${CMAKE_CURRENT_BINARY_DIR}/stubs/${stub_filename} - ) - target_compile_options(${fq_target_name} BEFORE PRIVATE - ${ADD_GPU_OBJ_COMPILE_OPTIONS} -nostdlib) - foreach(packaged_gpu_binary ${packaged_gpu_binaries}) - target_compile_options(${fq_target_name} PRIVATE - "SHELL:-Xclang -fembed-offload-object=${packaged_gpu_binary}") - endforeach() - target_include_directories(${fq_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR}) - target_include_directories(${fq_target_name} PRIVATE ${LIBC_SOURCE_DIR}) - add_dependencies(${fq_target_name} - ${full_deps_list} ${packaged_gpu_names} ${stub_target_name}) -endfunction() - # Rule which is essentially a wrapper over add_library to compile a set of # sources to object files. # Usage: @@ -214,53 +44,37 @@ function(create_object_library fq_target_name) message(FATAL_ERROR "'add_object_library' rule requires SRCS to be specified.") endif() - # The GPU build uses a separate internal file. - if(LIBC_TARGET_ARCHITECTURE_IS_GPU AND NOT ${ADD_OBJECT_NO_GPU_BUNDLE}) - set(internal_target_name ${fq_target_name}.__internal__) - set(public_packaging_for_internal "") - else() - set(internal_target_name ${fq_target_name}) - set(public_packaging_for_internal "-DLIBC_COPT_PUBLIC_PACKAGING") - endif() + set(internal_target_name ${fq_target_name}.__internal__) + set(public_packaging_for_internal "-DLIBC_COPT_PUBLIC_PACKAGING") _get_common_compile_options(compile_options "${ADD_OBJECT_FLAGS}") list(APPEND compile_options ${ADD_OBJECT_COMPILE_OPTIONS}) - # GPU builds require special handling for the objects because we want to - # export several different targets at once, e.g. for both Nvidia and AMD. - if(LIBC_TARGET_ARCHITECTURE_IS_GPU) - if(NOT ${ADD_OBJECT_NO_GPU_BUNDLE}) - _build_gpu_object_bundle( - ${fq_target_name} - SRCS ${ADD_OBJECT_SRCS} - HDRS ${ADD_OBJECT_HDRS} - CXX_STANDARD ${ADD_OBJECT_CXX_STANDARD} - COMPILE_OPTIONS ${compile_options} "-DLIBC_COPT_PUBLIC_PACKAGING" - DEPENDS ${fq_deps_list} - ) - endif() - # When the target for GPU is not bundled, internal_target_name is the same - # as fq_targetname - _build_gpu_object_for_single_arch( - ${internal_target_name} - ${LIBC_GPU_TARGET_ARCHITECTURE} - SRCS ${ADD_OBJECT_SRCS} - HDRS ${ADD_OBJECT_HDRS} - CXX_STANDARD ${ADD_OBJECT_CXX_STANDARD} - COMPILE_OPTIONS ${compile_options} ${public_packaging_for_internal} - DEPENDS ${fq_deps_list} - ) - else() + add_library( + ${fq_target_name} + EXCLUDE_FROM_ALL + OBJECT + ${ADD_OBJECT_SRCS} + ${ADD_OBJECT_HDRS} + ) + target_include_directories(${fq_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR}) + target_include_directories(${fq_target_name} PRIVATE ${LIBC_SOURCE_DIR}) + target_compile_options(${fq_target_name} PRIVATE ${compile_options}) + + # The NVPTX target is installed as LLVM-IR but the internal testing toolchain + # cannot handle it natively. Make a separate internal target for testing. + if(LIBC_TARGET_ARCHITECTURE_IS_NVPTX AND NOT LIBC_GPU_TESTS_DISABLED) add_library( - ${fq_target_name} + ${internal_target_name} EXCLUDE_FROM_ALL OBJECT ${ADD_OBJECT_SRCS} ${ADD_OBJECT_HDRS} ) - target_include_directories(${fq_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR}) - target_include_directories(${fq_target_name} PRIVATE ${LIBC_SOURCE_DIR}) - target_compile_options(${fq_target_name} PRIVATE ${compile_options}) + target_include_directories(${internal_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR}) + target_include_directories(${internal_target_name} PRIVATE ${LIBC_SOURCE_DIR}) + target_compile_options(${internal_target_name} PRIVATE ${compile_options} + -fno-lto -march=${LIBC_GPU_TARGET_ARCHITECTURE}) endif() if(SHOW_INTERMEDIATE_OBJECTS) @@ -290,13 +104,18 @@ function(create_object_library fq_target_name) FLAGS "${ADD_OBJECT_FLAGS}" ) + # If we built a separate internal target we want to use those target objects + # for testing instead of the exported target. + set(target_objects ${fq_target_name}) if(TARGET ${internal_target_name}) - set_target_properties( - ${fq_target_name} - PROPERTIES - OBJECT_FILES "$<TARGET_OBJECTS:${internal_target_name}>" - ) + set(target_objects ${internal_target_name}) endif() + + set_target_properties( + ${fq_target_name} + PROPERTIES + OBJECT_FILES "$<TARGET_OBJECTS:${target_objects}>" + ) endfunction(create_object_library) function(add_object_library target_name) @@ -389,12 +208,19 @@ function(create_entrypoint_object fq_target_name) get_target_property(object_file ${fq_dep_name} "OBJECT_FILE") get_target_property(object_file_raw ${fq_dep_name} "OBJECT_FILE_RAW") - add_library( - ${internal_target_name} - EXCLUDE_FROM_ALL - OBJECT - ${object_file_raw} - ) + + # If the system cannot build the GPU tests we simply make a dummy target. + if(LIBC_TARGET_OS_IS_GPU AND LIBC_GPU_TESTS_DISABLED) + add_custom_target(${internal_target_name}) + else() + add_library( + ${internal_target_name} + EXCLUDE_FROM_ALL + OBJECT + ${object_file_raw} + ) + endif() + add_dependencies(${internal_target_name} ${fq_dep_name}) add_library( ${fq_target_name} @@ -441,60 +267,42 @@ function(create_entrypoint_object fq_target_name) endif() endif() - # GPU builds require special handling for the objects because we want to - # export several different targets at once, e.g. for both Nvidia and AMD. - if(LIBC_TARGET_ARCHITECTURE_IS_GPU) - _build_gpu_object_bundle( - ${fq_target_name} - SRCS ${ADD_ENTRYPOINT_OBJ_SRCS} - HDRS ${ADD_ENTRYPOINT_OBJ_HDRS} - COMPILE_OPTIONS ${common_compile_options} "-DLIBC_COPT_PUBLIC_PACKAGING" - CXX_STANDARD ${ADD_ENTRYPOINT_OBJ_CXX_STANDARD} - DEPENDS ${full_deps_list} - FLAGS "${ADD_ENTRYPOINT_OBJ_FLAGS}" - ) - _build_gpu_object_for_single_arch( - ${internal_target_name} - ${LIBC_GPU_TARGET_ARCHITECTURE} - SRCS ${ADD_ENTRYPOINT_OBJ_SRCS} - HDRS ${ADD_ENTRYPOINT_OBJ_HDRS} - COMPILE_OPTIONS ${common_compile_options} - CXX_STANDARD ${ADD_ENTRYPOINT_OBJ_CXX_STANDARD} - DEPENDS ${full_deps_list} - FLAGS "${ADD_ENTRYPOINT_OBJ_FLAGS}" - ) - else() - add_library( - ${internal_target_name} - # TODO: We don't need an object library for internal consumption. - # A future change should switch this to a normal static library. - EXCLUDE_FROM_ALL - OBJECT - ${ADD_ENTRYPOINT_OBJ_SRCS} - ${ADD_ENTRYPOINT_OBJ_HDRS} - ) - target_compile_options(${internal_target_name} BEFORE PRIVATE ${common_compile_options}) - target_include_directories(${internal_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR}) - target_include_directories(${internal_target_name} PRIVATE ${LIBC_SOURCE_DIR}) - add_dependencies(${internal_target_name} ${full_deps_list}) - target_link_libraries(${internal_target_name} ${full_deps_list}) - - add_library( - ${fq_target_name} - # We want an object library as the objects will eventually get packaged into - # an archive (like libc.a). - EXCLUDE_FROM_ALL - OBJECT - ${ADD_ENTRYPOINT_OBJ_SRCS} - ${ADD_ENTRYPOINT_OBJ_HDRS} - ) - target_compile_options(${fq_target_name} BEFORE PRIVATE ${common_compile_options} -DLIBC_COPT_PUBLIC_PACKAGING) - target_include_directories(${fq_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR}) - target_include_directories(${fq_target_name} PRIVATE ${LIBC_SOURCE_DIR}) - add_dependencies(${fq_target_name} ${full_deps_list}) - target_link_libraries(${fq_target_name} ${full_deps_list}) + add_library( + ${internal_target_name} + # TODO: We don't need an object library for internal consumption. + # A future change should switch this to a normal static library. + EXCLUDE_FROM_ALL + OBJECT + ${ADD_ENTRYPOINT_OBJ_SRCS} + ${ADD_ENTRYPOINT_OBJ_HDRS} + ) + target_compile_options(${internal_target_name} BEFORE PRIVATE ${common_compile_options}) + target_include_directories(${internal_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR}) + target_include_directories(${internal_target_name} PRIVATE ${LIBC_SOURCE_DIR}) + add_dependencies(${internal_target_name} ${full_deps_list}) + target_link_libraries(${internal_target_name} ${full_deps_list}) + + # The NVPTX target cannot use LTO for the internal targets used for testing. + if(LIBC_TARGET_ARCHITECTURE_IS_NVPTX) + target_compile_options(${internal_target_name} PRIVATE + -fno-lto -march=${LIBC_GPU_TARGET_ARCHITECTURE}) endif() + add_library( + ${fq_target_name} + # We want an object library as the objects will eventually get packaged into + # an archive (like libc.a). + EXCLUDE_FROM_ALL + OBJECT + ${ADD_ENTRYPOINT_OBJ_SRCS} + ${ADD_ENTRYPOINT_OBJ_HDRS} + ) + target_compile_options(${fq_target_name} BEFORE PRIVATE ${common_compile_options} -DLIBC_COPT_PUBLIC_PACKAGING) + target_include_directories(${fq_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR}) + target_include_directories(${fq_target_name} PRIVATE ${LIBC_SOURCE_DIR}) + add_dependencies(${fq_target_name} ${full_deps_list}) + target_link_libraries(${fq_target_name} ${full_deps_list}) + set_target_properties( ${fq_target_name} PROPERTIES |