| Issue |
161529
|
| Summary |
[flang][openmp] Incorrect perfect nest detection if using continues instead of enddo.
|
| Labels |
flang
|
| Assignees |
|
| Reporter |
scamp-nvidia
|
Consider the following example, carved down from an OpenMP SPEC test:
```
! omp_compile_test.f90
program omp_compile_test
implicit none
integer, parameter :: N = 8
real(8) :: PN(N,N) = 1.0d0, UN(N,N) = 2.0d0, VN(N,N) = 3.0d0
real(8) :: P = 0.0d0, U = 0.0d0, V = 0.0d0
integer :: i, j
!$omp target teams map(to:PN,UN,VN) map(tofrom:P,U,V)
!$omp loop collapse(2) reduction(+:P,U,V)
do 4500 j = 1, N
do 3500 i = 1, N
P = P + abs(PN(i,j))
U = U + abs(UN(i,j))
V = V + abs(VN(i,j))
3500 CONTINUE
4500 CONTINUE
!$omp end target teams
end program
```
This has prevously worked, but began failing between d96c32cdaf588903917a9e7db172729759e34c9d and fad2a4c00db68ee10b506b05531cdc6458d9be37 with the following message:
```
scamp$ flang test.F90 -fopenmp -o test
error: Semantic errors in test.F90
./test.F90:10:7: error: Canonical loop nest must be perfectly nested.
!$omp loop collapse(2) reduction(+:P,U,V)
^^^^
```
Reading the changes between those two hashes, I immediately key in on #160283 - which appears to work on perfectly nested OpenMP Flang structures. Tagging @Meinersbur for investigation, please.
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