| Issue |
208698
|
| Summary |
[Flang][OpenMP] Crash in target region with a non-constant if clause
|
| Labels |
|
| Assignees |
abidh
|
| Reporter |
abidh
|
Please look at the following testcase.
```
module control_mod
implicit none
logical :: should_offload = .true.
end module
program test_if_bycopy
use control_mod
implicit none
integer :: data(30000)
integer :: i
data = 0
!$omp target enter data map(alloc: data)
! NOTE: Remove if or replace with a constant and it will work fine.
!$omp target teams distribute parallel do map(present, tofrom: data) if (should_offload)
do i = 1, 30000 ! 9000 -> 9001 seemed to be the break point where the crash becomes a lot more consistent
data(i) = i
end do
!$omp end target teams distribute parallel do
!$omp target exit data map(from: data)
if (data(1) /= 1 .or. data(19600) /= 19600) then
print *, "FAIL: data(1)=", data(1), " data(19600)=", data(19600)
stop 1
end if
print *, "PASS"
end program
```
Compile it with the following command
`flang -fopenmp --offload-arch=gfx1200 -o test test.f90`
`./test`
The `test` will crash on most executions. The crash is only observed on gfx1200.
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