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>
44 lines
1.7 KiB
C
44 lines
1.7 KiB
C
// RUN: %libomptarget-compile-generic -fopenmp-version=51
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// RUN: %libomptarget-run-fail-generic 2>&1 \
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// RUN: | %fcheck-generic
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// The host memory layout for the following program looks like this:
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//
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// | 4 bytes | 4 bytes | 8 bytes |
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// | s.x | s.y | s.z |
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// `-----------------------------'
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//
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// s is always at least 8-byte aligned in host memory due to s.z, so
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// libomptarget's device padding for map(s.y,s.z) always maps to host memory
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// that includes s.x. At one time, s.x appeared to be mapped as a result, but
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// libomptarget has since been fixed not to consider device padding as mapped to
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// host memory.
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#include <omp.h>
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#include <stdio.h>
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int main() {
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struct S { int x; int y; double z; } s = {1, 2, 3};
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// CHECK: &s.x = 0x[[#%x,HOST_ADDR:]], size = [[#%u,SIZE:]]
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fprintf(stderr, "&s = %p\n", &s);
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fprintf(stderr, "&s.x = %p, size = %ld\n", &s.x, sizeof s.x);
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fprintf(stderr, "&s.y = %p\n", &s.y);
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fprintf(stderr, "&s.z = %p\n", &s.z);
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// CHECK: s.x is present: 0
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// CHECK: s.x = 1{{$}}
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#pragma omp target enter data map(alloc: s.y, s.z)
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int dev = omp_get_default_device();
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fprintf(stderr, "s.x is present: %d\n", omp_target_is_present(&s.x, dev));
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#pragma omp target update from(s.x) // should have no effect
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fprintf(stderr, "s.x = %d\n", s.x);
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// CHECK: omptarget message: device mapping required by 'present' map type modifier does not exist for host address 0x{{0*}}[[#HOST_ADDR]] ([[#SIZE]] bytes)
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// CHECK: omptarget error: Call to getTargetPointer returned null pointer ('present' map type modifier).
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// CHECK: omptarget fatal error 1: failure of target construct while offloading is mandatory
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#pragma omp target enter data map(present, alloc: s.x)
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return 0;
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}
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