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Diffstat (limited to 'gcc/testsuite/gfortran.dg/array_reference_3.f90')
| -rw-r--r-- | gcc/testsuite/gfortran.dg/array_reference_3.f90 | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/array_reference_3.f90 b/gcc/testsuite/gfortran.dg/array_reference_3.f90 new file mode 100644 index 00000000000..85fa3317d98 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/array_reference_3.f90 @@ -0,0 +1,195 @@ +! { dg-do run } +! { dg-additional-options "-fdump-tree-original" } +! +! PR fortran/102043 +! Array indexing was causing the middle-end to conclude the index +! to be non-negative, which can be wrong for arrays with a "reversed-order" +! descriptor. This was fixed by using pointer arithmetic when +! the index can be negative. +! +! This test checks the code generated for array references of various kinds +! of arrays, using either array indexing or pointer arithmetic. + +program p + implicit none + call check_assumed_shape_elem + call check_assumed_shape_scalarized + call check_descriptor_dim + call check_cfi_dim + call check_substring + call check_ptr_elem + call check_ptr_scalarized + call check_explicit_shape_elem + call check_explicit_shape_scalarized + call check_tmp_array + call check_allocatable_array_elem + call check_allocatable_array_scalarized +contains + subroutine cases(assumed_shape_x) + integer :: assumed_shape_x(:) + assumed_shape_x(2) = 10 + end subroutine cases + subroutine check_assumed_shape_elem + integer :: x(3) + x = 0 + call cases(x) + if (any(x /= (/ 0, 10, 0 /))) stop 10 + ! Assumed shape array are referenced with pointer arithmetic. + ! { dg-final { scan-tree-dump-times "\\*\\(\\(integer\\(kind=4\\) \\*\\) assumed_shape_x.\\d+ \\+ \\(sizetype\\) \\(\\(stride.\\d+ \\* 2 \\+ offset.\\d+\\) \\* 4\\)\\) = 10;" 1 "original" } } + end subroutine check_assumed_shape_elem + subroutine casss(assumed_shape_y) + integer :: assumed_shape_y(:) + assumed_shape_y = 11 + end subroutine casss + subroutine check_assumed_shape_scalarized + integer :: y(3) + call casss(y) + if (any(y /= 11)) stop 11 + ! Assumed shape array are referenced with pointer arithmetic. + ! { dg-final { scan-tree-dump-times "\\*\\(\\(integer\\(kind=4\\) \\*\\) assumed_shape_y.\\d+ \\+ \\(sizetype\\) \\(\\(S.\\d+ \\* D.\\d+ \\+ D.\\d+\\) \\* 4\\)\\) = 11;" 1 "original" } } + end subroutine check_assumed_shape_scalarized + subroutine check_descriptor_dim + integer, allocatable :: descriptor(:) + allocate(descriptor(4)) + descriptor(:) = 12 + if (any(descriptor /= 12)) stop 12 + ! The descriptor’s dim array is referenced with array indexing. + ! { dg-final { scan-tree-dump-times "descriptor\\.dim\\\[0\\\]\\.ubound = 4;" 1 "original" } } + end subroutine check_descriptor_dim + subroutine ccfis(cfi_descriptor) bind(c) + integer :: cfi_descriptor(:) + cfi_descriptor = 13 + end subroutine ccfis + subroutine check_cfi_dim + integer :: x(5) + call ccfis(x) + if (any(x /= 13)) stop 13 + ! The cfi descriptor’s dim array is referenced with array indexing. + ! { dg-final { scan-tree-dump-times "cfi_descriptor->dim\\\[idx.\\d+\\\]\\.ubound = _cfi_descriptor->dim\\\[idx.\\d+\\\]\\.extent \\+ \\(cfi_descriptor->dim\\\[idx.\\d+\\\]\\.lbound \\+ -1\\);" 1 "original" } } + end subroutine check_cfi_dim + subroutine css(c) bind(c) + character :: c + c = 'k' + end subroutine css + subroutine check_substring + character(5) :: x + x = 'abcde' + call css(x(3:3)) + if (x /= 'abkde') stop 14 + ! Substrings use array indexing + ! { dg-final { scan-tree-dump-times "css \\(\\(character\\(kind=1\\)\\\[\\d+:\\d+\\\] \\*\\) &x\\\[3\\\].lb: \\d+ sz: \\d+.\\);" 1 "original" } } + end subroutine check_substring + subroutine check_ptr_elem + integer, target :: x(7) + integer, pointer :: ptr_x(:) + x = 0 + ptr_x => x + ptr_x(4) = 16 + if (any(ptr_x /= (/ 0, 0, 0, 16, 0, 0, 0 /))) stop 16 + ! pointers are referenced with pointer arithmetic. + ! { dg-final { scan-tree-dump-times "\\*\\(integer\\(kind=4\\) \\*\\) \\(ptr_x\\.data \\+ \\(sizetype\\) \\(\\(ptr_x\\.offset \\+ ptr_x\\.dim\\\[0\\\]\\.stride \\* 4\\) \\* ptr_x\\.span\\)\\) = 16;" 1 "original" } } + end subroutine check_ptr_elem + subroutine check_ptr_scalarized + integer, target :: y(8) + integer, pointer :: ptr_y(:) + y = 0 + ptr_y => y + ptr_y = 17 + if (any(ptr_y /= 17)) stop 17 + ! pointers are referenced with pointer arithmetic. + ! { dg-final { scan-tree-dump-times "\\*\\(\\(integer\\(kind=4\\) \\*\\) D.\\d+ \\+ \\(sizetype\\) \\(\\(S.\\d+ \\* D.\\d+ \\+ D.\\d+\\) \\* ptr_y\\.span\\)\\) = 17;" 1 "original" } } + end subroutine check_ptr_scalarized + subroutine check_explicit_shape_elem + integer :: explicit_shape_x(9) + explicit_shape_x = 0 + explicit_shape_x(5) = 18 + if (any(explicit_shape_x /= (/ 0, 0, 0, 0, 18, 0, 0, 0, 0 /))) stop 18 + ! Explicit shape arrays are referenced with array indexing. + ! { dg-final { scan-tree-dump-times "explicit_shape_x\\\[4\\\] = 18;" 1 "original" } } + end subroutine check_explicit_shape_elem + subroutine check_explicit_shape_scalarized + integer :: explicit_shape_y(3) + explicit_shape_y = 19 + if (any(explicit_shape_y /= 19)) stop 19 + ! Explicit shape arrays are referenced with array indexing. + ! { dg-final { scan-tree-dump-times "explicit_shape_y\\\[S.\\d+ \\+ -1\\\] = 19;" 1 "original" } } + end subroutine check_explicit_shape_scalarized + subroutine check_tmp_array + integer :: non_tmp(6) + non_tmp = 15 + non_tmp(2:5) = non_tmp(1:4) + non_tmp(3:6) + if (any(non_tmp /= (/ 15, 30, 30, 30, 30, 15 /))) stop 15 + ! temporary arrays use array indexing + ! { dg-final { scan-tree-dump-times "\\(*\\(integer\\(kind=4\\)\\\[4\\\] \\* restrict\\) atmp.\\d+\\.data\\)\\\[S.\\d+\\\] = non_tmp\\\[S.\\d+\\\] \\+ non_tmp\\\[S.\\d+ \\+ 2\\\];" 1 "original" } } + ! { dg-final { scan-tree-dump-times "non_tmp\\\[S.\\d+ \\+ 1\\\] = \\(\\*\\(integer\\(kind=4\\)\\\[4\\\] \\* restrict\\) atmp.\\d+\\.data\\)\\\[S.\\d+\\\];" 1 "original" } } + end subroutine check_tmp_array + subroutine check_allocatable_array_elem + integer, allocatable :: allocatable_x(:) + allocate(allocatable_x(4),source=0) + allocatable_x(2) = 20 + if (any(allocatable_x /= (/ 0, 20, 0, 0 /))) stop 20 + ! Allocatable arrays are referenced with array indexing. + ! { dg-final { scan-tree-dump-times "\\(\\*\\(integer\\(kind=4\\)\\\[0:\\\] \\* restrict\\) allocatable_x\\.data\\)\\\[allocatable_x\\.offset \\+ 2\\\] = 20;" 1 "original" } } + end subroutine check_allocatable_array_elem + subroutine check_allocatable_array_scalarized + integer, allocatable :: allocatable_y(:) + allocate(allocatable_y(5),source=0) + allocatable_y = 21 + if (any(allocatable_y /= 21)) stop 21 + ! Allocatable arrays are referenced with array indexing. + ! { dg-final { scan-tree-dump-times "\\(\\*D.\\d+\\)\\\[S.\\d+ \\+ \\D.\\d+\\\] = 21;" 1 "original" } } + end subroutine check_allocatable_array_scalarized + subroutine cares(assumed_rank_x) + integer :: assumed_rank_x(..) + select rank(rank_1_var_x => assumed_rank_x) + rank(1) + rank_1_var_x(3) = 22 + end select + end subroutine cares + subroutine check_assumed_rank_elem + integer :: x(6) + x = 0 + call cares(x) + if (any(x /= (/ 0, 0, 22, 0, 0, 0 /))) stop 22 + ! Assumed rank arrays are referenced with pointer arithmetic. + ! { dg-final { scan-tree-dump-times "\\*\\(\\(integer\\(kind=4\\) \\*\\) __tmp_INTEGER_4_rank_1\\.data \\+ \\(sizetype\\) \\(\\(__tmp_INTEGER_4_rank_1\\.offset \\+ __tmp_INTEGER_4_rank_1\\.dim\\\[0\\\]\\.stride \\* 3\\) \\* 4\\)\\) = 22;" 1 "original" } } + end subroutine check_assumed_rank_elem + subroutine carss(assumed_rank_y) + integer :: assumed_rank_y(..) + select rank(rank_1_var_y => assumed_rank_y) + rank(1) + rank_1_var_y = 23 + end select + end subroutine carss + subroutine check_assumed_rank_scalarized + integer :: y(7) + call carss(y) + if (any(y /= 23)) stop 23 + ! Assumed rank arrays are referenced with pointer arithmetic. + ! { dg-final { scan-tree-dump-times "\\*\\(\\(integer\\(kind=4\\) \\*\\) D.\\d+ \\+ \\(sizetype\\) \\(\\(S.\\d+ \\* D.\\d+ \\+ D.\\d+\\) \\* 4\\)\\) = 23;" 1 "original" } } + end subroutine check_assumed_rank_scalarized + subroutine casces(assumed_shape_cont_x) + integer, dimension(:), contiguous :: assumed_shape_cont_x + assumed_shape_cont_x(4) = 24 + end subroutine casces + subroutine check_assumed_shape_cont_elem + integer :: x(8) + x = 0 + call casces(x) + if (any(x /= (/ 0, 0, 0, 24, 0, 0, 0, 0 /))) stop 24 + ! Contiguous assumed shape arrays are referenced with array indexing. + ! { dg-final { scan-tree-dump-times "\\(\\*assumed_shape_cont_x.\\d+\\)\\\[stride.\\d+ \\* 4 \\+ offset.\\d+\\\] = 24;" 1 "original" } } + end subroutine check_assumed_shape_cont_elem + subroutine cascss(assumed_shape_cont_y) + integer, dimension(:), contiguous :: assumed_shape_cont_y + assumed_shape_cont_y = 25 + end subroutine cascss + subroutine check_assumed_shape_cont_scalarized + integer :: y(9) + call cascss(y) + if (any(y /= 25)) stop 25 + ! Contiguous assumed shape arrays are referenced with array indexing. + ! { dg-final { scan-tree-dump-times "\\(\\*assumed_shape_cont_y.\\d+\\)\\\[S.\\d+ \\* D.\\d+ \\+ D.\\d+\\\] = 25;" 1 "original" } } + end subroutine check_assumed_shape_cont_scalarized +end program p + |