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Summary: This patch adds initial support to build the `builtins` library for GPU targets. Primarily this requires adding a few new architectures for `amdgcn` and `nvptx64`. I built this using the following invocations. ```console $ cmake ../compiler-rt -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_BUILD_TYPE=Release -GNinja -DCMAKE_C_COMPILER_TARGET=<nvptx64-nvidia-cuda|amdgcn-amd-amdhsa> -DCMAKE_CXX_COMPILER_TARGET=<nvptx64-nvidia-cuda|amdgcn-amd-amdhsa> -DCMAKE_C_COMPILER_WORKS=1 -DCMAKE_CXX_COMPILER_WORKS=1 -DLLVM_CMAKE_DIR=../cmake/Modules -DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON -C ../compiler-rt/cmake/caches/GPU.cmake ``` Some pointers would be appreciated for how to test this using a standard (non-default target only) build. GPU builds are somewhat finnicky. We only expect this to be built with a sufficiently new clang, as it's the only compiler that supports the target and output we distribute. Distribution is done as LLVM-IR blobs for now. GPUs have little backward compatibility, so linking object files is left to a future patch. More work is necessary to build correctly for all targets and ship into the correct clang resource directory. Additionally we need to use the `libc` project's support for running unit tests.
19 lines
852 B
CMake
19 lines
852 B
CMake
# This file sets up a CMakeCache for GPU builds of compiler-rt. This supports
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# amdgcn and nvptx builds targeting the builtins library.
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set(COMPILER_RT_INCLUDE_TESTS OFF CACHE BOOL "")
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set(COMPILER_RT_HAS_SAFESTACK OFF CACHE BOOL "")
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set(COMPILER_RT_BUILD_BUILTINS ON CACHE BOOL "")
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set(COMPILER_RT_BAREMETAL_BUILD ON CACHE BOOL "")
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set(COMPILER_RT_BUILD_CRT OFF CACHE BOOL "")
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set(COMPILER_RT_BUILD_SANITIZERS OFF CACHE BOOL "")
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set(COMPILER_RT_BUILD_XRAY OFF CACHE BOOL "")
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set(COMPILER_RT_BUILD_LIBFUZZER OFF CACHE BOOL "")
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set(COMPILER_RT_BUILD_PROFILE OFF CACHE BOOL "")
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set(COMPILER_RT_BUILD_MEMPROF OFF CACHE BOOL "")
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set(COMPILER_RT_BUILD_XRAY_NO_PREINIT OFF CACHE BOOL "")
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set(COMPILER_RT_BUILD_ORC OFF CACHE BOOL "")
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set(COMPILER_RT_BUILD_GWP_ASAN OFF CACHE BOOL "")
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set(COMPILER_RT_BUILD_SCUDO_SANTDALONE_WITH_LLVM_LIBC OFF CACHE BOOL "")
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