be6f110bc0
Summary:
Currently we build the OpenMP device runtime as part of the `offload/`
project. This is problematic because it has several restrictions when
compared to the normal offloading runtime. It can only be built with an
up-to-date clang and we need to set the target appropriately. Currently
we hack around this by creating the compiler invocation manually, but
this patch moves it into a separate runtimes build.
This follows the same build we use for libc, libc++, compiler-rt, and
flang-rt. This also moves it from `offload/` into `openmp/` because it
is still the `openmp/` runtime and I feel it is more appropriate. We do
want a generic `offload/` library at some point, but it would be trivial
to then add that as a separate library now that we have the
infrastructure that makes adding these new libraries trivial.
This most importantly will require that users update their build
configs, mostly adding the following lines at a minimum. I was debating
whether or not I should 'auto-upgrade' this, but I just went with a
warning.
```
-DLLVM_RUNTIME_TARGETS='default;amdgcn-amd-amdhsa;nvptx64-nvidia-cuda' \
-DRUNTIMES_nvptx64-nvidia-cuda_LLVM_ENABLE_RUNTIMES=openmp \
-DRUNTIMES_amdgcn-amd-amdhsa_LLVM_ENABLE_RUNTIMES=openmp \
```
This also changed where the `.bc` version of the library lives, but it's
still created.
25 lines
1.0 KiB
CMake
25 lines
1.0 KiB
CMake
# This file is used across all AMDGPU-cmake builders
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# Install directory set to /tmp as this is a bot config
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set(CMAKE_INSTALL_PREFIX /tmp/llvm.install.test CACHE STRING "")
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# General settings
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set(CMAKE_BUILD_TYPE Release CACHE STRING "")
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set(BUILD_SHARED_LIBS ON CACHE BOOL "")
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set(CMAKE_C_COMPILER_LAUNCHER ccache CACHE STRING "")
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set(CMAKE_CXX_COMPILER_LAUNCHER ccache CACHE STRING "")
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set(LLVM_ENABLE_PROJECTS "clang;lld;mlir;flang" CACHE STRING "")
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set(LLVM_ENABLE_RUNTIMES "compiler-rt;openmp;offload;flang-rt" CACHE STRING "")
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set(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR ON CACHE BOOL "")
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set(LLVM_ENABLE_ASSERTIONS ON CACHE BOOL "")
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set(LLVM_TARGETS_TO_BUILD "host;AMDGPU;SPIRV" CACHE STRING "")
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set(LLVM_LIT_ARGS "-v --show-unsupported --timeout 100 --show-xfail -j 16" CACHE STRING "")
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set(CLANG_DEFAULT_LINKER "lld" CACHE STRING "")
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set(CLANG_DEFAULT_RTLIB "compiler-rt" STRING "")
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set(LLVM_RUNTIME_TARGETS default;amdgcn-amd-amdhsa CACHE STRING "")
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set(RUNTIMES_amdgcn-amd-amdhsa_LLVM_ENABLE_RUNTIMES "openmp" CACHE STRING "")
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