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[flang][OpenMP][Offloading][AMDGPU] Add test for
target update
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openmp/libomptarget/test/offloading/fortran/target_update.f90
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! Offloading test for the `target update` directive. | ||
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! REQUIRES: flang, amdgcn-amd-amdhsa | ||
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! RUN: %libomptarget-compile-fortran-run-and-check-generic | ||
program target_update | ||
implicit none | ||
integer :: x(1) | ||
integer :: host_id | ||
integer :: device_id(1) | ||
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INTERFACE | ||
FUNCTION omp_get_device_num() BIND(C) | ||
USE, INTRINSIC :: iso_c_binding, ONLY: C_INT | ||
integer :: omp_get_device_num | ||
END FUNCTION omp_get_device_num | ||
END INTERFACE | ||
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x(1) = 5 | ||
host_id = omp_get_device_num() | ||
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!$omp target enter data map(to:x, device_id) | ||
!$omp target | ||
x(1) = 42 | ||
!$omp end target | ||
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! Test that without a `target update` directive, the target update to x is | ||
! not yet seen by the host. | ||
! CHECK: After first target regions and before target update: x = 5 | ||
print *, "After first target regions and before target update: x =", x(1) | ||
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!$omp target | ||
x(1) = 84 | ||
device_id(1) = omp_get_device_num() | ||
!$omp end target | ||
!$omp target update from(x, device_id) | ||
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! Test that after the `target update`, the host can see the new x value. | ||
! CHECK: After second target regions and target update: x = 84 | ||
print *, "After second target regions and target update: x =", x(1) | ||
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! Make sure that offloading to the device actually happened. This way we | ||
! verify that we didn't take the fallback host execution path. | ||
! CHECK: Offloading succeeded! | ||
if (host_id /= device_id(1)) then | ||
print *, "Offloading succeeded!" | ||
else | ||
print *, "Offloading failed!" | ||
end if | ||
end program target_update |