98697f4764
Summary: This variable is supposed to control the architectures to build for. At some point this was changes out for testing and never fixed.
111 lines
4.7 KiB
CMake
111 lines
4.7 KiB
CMake
if(NOT LIBC_TARGET_ARCHITECTURE_IS_GPU)
|
|
message(FATAL_ERROR
|
|
"libc build: Invalid attempt to set up GPU architectures.")
|
|
endif()
|
|
|
|
# Set up the target architectures to build the GPU libc for.
|
|
set(all_amdgpu_architectures "gfx700;gfx701;gfx801;gfx803;gfx900;gfx902;gfx906"
|
|
"gfx908;gfx90a;gfx90c;gfx940;gfx1010;gfx1030"
|
|
"gfx1031;gfx1032;gfx1033;gfx1034;gfx1035;gfx1036"
|
|
"gfx1100;gfx1101;gfx1102;gfx1103")
|
|
set(all_nvptx_architectures "sm_35;sm_37;sm_50;sm_52;sm_53;sm_60;sm_61;sm_62"
|
|
"sm_70;sm_72;sm_75;sm_80;sm_86")
|
|
set(all_gpu_architectures
|
|
"${all_amdgpu_architectures};${all_nvptx_architectures}")
|
|
set(LIBC_GPU_ARCHITECTURES ${all_gpu_architectures} CACHE STRING
|
|
"List of GPU architectures to build the libc for.")
|
|
if(LIBC_GPU_ARCHITECTURES STREQUAL "all")
|
|
set(LIBC_GPU_ARCHITECTURES ${all_gpu_architectures} FORCE)
|
|
endif()
|
|
message(STATUS "Building libc for the following GPU architectures: "
|
|
"${LIBC_GPU_ARCHITECTURES}")
|
|
|
|
# Ensure the compiler is a valid clang when building the GPU target.
|
|
set(req_ver "${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}")
|
|
if(NOT (CMAKE_CXX_COMPILER_ID MATCHES "[Cc]lang" AND
|
|
${CMAKE_CXX_COMPILER_VERSION} VERSION_EQUAL "${req_ver}"))
|
|
message(FATAL_ERROR "Cannot build libc for GPU. CMake compiler "
|
|
"'${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}' "
|
|
" is not `Clang ${req_ver}.")
|
|
endif()
|
|
if(NOT LLVM_LIBC_FULL_BUILD)
|
|
message(FATAL_ERROR "LLVM_LIBC_FULL_BUILD must be enabled to build libc for "
|
|
"GPU.")
|
|
endif()
|
|
|
|
# Identify the program used to package multiple images into a single binary.
|
|
find_program(LIBC_CLANG_OFFLOAD_PACKAGER
|
|
NAMES clang-offload-packager
|
|
PATHS ${LLVM_BINARY_DIR}/bin)
|
|
if(NOT LIBC_CLANG_OFFLOAD_PACKAGER)
|
|
message(FATAL_ERROR "Cannot find the 'clang-offload-packager' for the GPU "
|
|
"build")
|
|
endif()
|
|
|
|
set(LIBC_GPU_TEST_ARCHITECTURE "" CACHE STRING "Architecture for the GPU tests")
|
|
if(LIBC_GPU_TEST_ARCHITECTURE)
|
|
message(STATUS "Using user-specified GPU architecture for testing "
|
|
"'${LIBC_GPU_TARGET_ARCHITECTURE}'")
|
|
if("${LIBC_GPU_TEST_ARCHITECTURE}" IN_LIST all_amdgpu_architectures)
|
|
set(LIBC_GPU_TARGET_ARCHITECTURE_IS_AMDGPU TRUE)
|
|
set(LIBC_GPU_TARGET_TRIPLE "amdgcn-amd-amdhsa")
|
|
set(LIBC_GPU_TARGET_ARCHITECTURE "${LIBC_GPU_TEST_ARCHITECTURE}")
|
|
elseif("${LIBC_GPU_TEST_ARCHITECTURE}" IN_LIST all_nvptx_architectures)
|
|
set(LIBC_GPU_TARGET_ARCHITECTURE_IS_NVPTX TRUE)
|
|
set(LIBC_GPU_TARGET_TRIPLE "nvptx64-nvidia-cuda")
|
|
set(LIBC_GPU_TARGET_ARCHITECTURE "${LIBC_GPU_TEST_ARCHITECTURE}")
|
|
else()
|
|
message(FATAL_ERROR
|
|
"Unknown GPU architecture '${LIBC_GPU_TARGET_ARCHITECTURE}'")
|
|
endif()
|
|
return()
|
|
endif()
|
|
|
|
# Identify any locally installed AMD GPUs on the system to use for testing.
|
|
find_program(LIBC_AMDGPU_ARCH
|
|
NAMES amdgpu-arch
|
|
PATHS ${LLVM_BINARY_DIR}/bin /opt/rocm/llvm/bin/)
|
|
if(LIBC_AMDGPU_ARCH)
|
|
execute_process(COMMAND ${LIBC_AMDGPU_ARCH}
|
|
OUTPUT_VARIABLE LIBC_AMDGPU_ARCH_OUTPUT
|
|
OUTPUT_STRIP_TRAILING_WHITESPACE)
|
|
string(FIND "${LIBC_AMDGPU_ARCH_OUTPUT}" "\n" first_arch_string)
|
|
string(SUBSTRING "${LIBC_AMDGPU_ARCH_OUTPUT}" 0 ${first_arch_string}
|
|
arch_string)
|
|
if(arch_string)
|
|
set(LIBC_GPU_TARGET_ARCHITECTURE_IS_AMDGPU TRUE)
|
|
set(LIBC_GPU_TARGET_TRIPLE "amdgcn-amd-amdhsa")
|
|
set(LIBC_GPU_TARGET_ARCHITECTURE "${arch_string}")
|
|
endif()
|
|
endif()
|
|
|
|
if(LIBC_GPU_TARGET_ARCHITECTURE_IS_AMDGPU)
|
|
message(STATUS "Found an installed AMD GPU on the system with target "
|
|
"architecture ${LIBC_GPU_TARGET_ARCHITECTURE} ")
|
|
return()
|
|
endif()
|
|
|
|
# Identify any locally installed NVIDIA GPUs on the system to use for testing.
|
|
find_program(LIBC_NVPTX_ARCH
|
|
NAMES nvptx-arch
|
|
PATHS ${LLVM_BINARY_DIR}/bin)
|
|
if(LIBC_NVPTX_ARCH)
|
|
execute_process(COMMAND ${LIBC_NVPTX_ARCH}
|
|
OUTPUT_VARIABLE LIBC_NVPTX_ARCH_OUTPUT
|
|
OUTPUT_STRIP_TRAILING_WHITESPACE)
|
|
string(FIND "${LIBC_NVPTX_ARCH_OUTPUT}" "\n" first_arch_string)
|
|
string(SUBSTRING "${LIBC_NVPTX_ARCH_OUTPUT}" 0 ${first_arch_string}
|
|
arch_string)
|
|
if(arch_string)
|
|
set(LIBC_GPU_TARGET_ARCHITECTURE_IS_NVPTX TRUE)
|
|
set(LIBC_GPU_TARGET_TRIPLE "nvptx64-nvidia-cuda")
|
|
set(LIBC_GPU_TARGET_ARCHITECTURE "${arch_string}")
|
|
endif()
|
|
endif()
|
|
|
|
if(LIBC_GPU_TARGET_ARCHITECTURE_IS_NVPTX)
|
|
message(STATUS "Found an installed NVIDIA GPU on the system with target "
|
|
"architecture ${LIBC_GPU_TARGET_ARCHITECTURE} ")
|
|
return()
|
|
endif()
|