330d8983d2
In a nutshell, this moves our libomptarget code to populate the offload subproject. With this commit, users need to enable the new LLVM/Offload subproject as a runtime in their cmake configuration. No further changes are expected for downstream code. Tests and other components still depend on OpenMP and have also not been renamed. The results below are for a build in which OpenMP and Offload are enabled runtimes. In addition to the pure `git mv`, we needed to adjust some CMake files. Nothing is intended to change semantics. ``` ninja check-offload ``` Works with the X86 and AMDGPU offload tests ``` ninja check-openmp ``` Still works but doesn't build offload tests anymore. ``` ls install/lib ``` Shows all expected libraries, incl. - `libomptarget.devicertl.a` - `libomptarget-nvptx-sm_90.bc` - `libomptarget.rtl.amdgpu.so` -> `libomptarget.rtl.amdgpu.so.18git` - `libomptarget.so` -> `libomptarget.so.18git` Fixes: https://github.com/llvm/llvm-project/issues/75124 --------- Co-authored-by: Saiyedul Islam <Saiyedul.Islam@amd.com>
42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
// RUN: %libomptarget-compile-run-and-check-generic
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// REQUIRES: unified_shared_memory
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// UNSUPPORTED: clang-6, clang-7, clang-8, clang-9
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#include <omp.h>
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#include <stdio.h>
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#pragma omp requires unified_shared_memory
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struct S {
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int x;
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int y;
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};
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int main(int argc, char *argv[]) {
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int dev = omp_get_default_device();
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struct S s = {10, 20};
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#pragma omp target enter data map(close, to : s)
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#pragma omp target map(alloc : s)
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{
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s.x = 11;
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s.y = 21;
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}
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// To determine whether x needs to be transfered or deleted, the runtime
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// cannot simply check whether unified shared memory is enabled and the
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// 'close' modifier is specified. It must check whether x was previously
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// placed in device memory by, for example, a 'close' modifier that isn't
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// specified here. The following struct member case checks a special code
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// path in the runtime implementation where members are transferred before
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// deletion of the struct.
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#pragma omp target exit data map(from : s.x, s.y)
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// CHECK: s.x=11, s.y=21
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printf("s.x=%d, s.y=%d\n", s.x, s.y);
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// CHECK: present: 0
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printf("present: %d\n", omp_target_is_present(&s, dev));
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return 0;
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}
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