llvm-project/flang/test/Semantics/OpenMP/loop-transformation-construct02.f90
Krzysztof Parzyszek 6b6d1573a8
[flang][OpenMP] Provide reasons for calculated sequence length (#187866)
If the length was limited by some factor, include the reason for what
caused the reduction.

Issue: https://github.com/llvm/llvm-project/issues/185287
2026-03-25 08:41:24 -05:00

96 lines
2.0 KiB
Fortran

! Testing the Semantics of loop sequences combined with
! nested Loop Transformation Constructs
!RUN: %python %S/../test_errors.py %s %flang -fopenmp -fopenmp-version=60
subroutine loop_transformation_construct1
implicit none
!$omp do
!ERROR: This construct should contain a DO-loop or a loop-nest-generating OpenMP construct
!$omp fuse
end subroutine
subroutine loop_transformation_construct2
implicit none
!$omp do
!ERROR: This construct should contain a DO-loop or a loop-nest-generating OpenMP construct
!$omp fuse
!$omp end fuse
end subroutine
subroutine loop_transformation_construct3
implicit none
integer, parameter :: i = 5
integer :: x
integer :: v(i)
!$omp do
!$omp fuse
do x = 1, i
v(x) = v(x) * 2
end do
do x = 1, i
v(x) = v(x) * 2
end do
!$omp end fuse
!$omp end do
!ERROR: Misplaced OpenMP end-directive
!$omp end fuse
end subroutine
subroutine loop_transformation_construct4
implicit none
integer, parameter :: i = 5
integer :: x
integer :: v(i)
!$omp do
do x = 1, i
v(x) = v(x) * 2
end do
!ERROR: This construct should contain a DO-loop or a loop-nest-generating OpenMP construct
!$omp fuse
!$omp end fuse
end subroutine
subroutine loop_transformation_construct5
implicit none
integer, parameter :: i = 5
integer :: x
integer :: v(i)
!$omp do
!ERROR: OpenMP loop construct cannot apply to a fully unrolled loop
!$omp fuse
!$omp unroll full
do x = 1, i
v(x) = v(x) * 2
end do
do x = 1, i
v(x) = v(x) * 2
end do
!$omp end fuse
end subroutine
subroutine loop_transformation_construct6
implicit none
integer, parameter :: i = 5
integer :: x
integer :: v(i)
!ERROR: This construct applies to a loop nest, but has a loop sequence of length 2
!$omp do
!BECAUSE: Out of 2 loops, 1 were fused
!$omp fuse looprange(1,1)
!$omp unroll partial(2)
do x = 1, i
v(x) = v(x) * 2
end do
do x = 1, i
v(x) = v(x) * 2
end do
!$omp end fuse
end subroutine