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| author | Jakub Jelinek <jakub@redhat.com> | 2021-10-27 09:24:46 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2021-10-27 09:24:46 +0200 |
| commit | eef811490646a68c9893968a421b351e7bf704e1 (patch) | |
| tree | 1c4218c4f2cb965706c5677a49465f4bcc159166 | |
| parent | 2084b5f42a4432da8b0625f9c669bf690ec46468 (diff) | |
| download | gcc-eef811490646a68c9893968a421b351e7bf704e1.zip gcc-eef811490646a68c9893968a421b351e7bf704e1.tar.gz gcc-eef811490646a68c9893968a421b351e7bf704e1.tar.bz2 | |
openmp: Document that non-rect loops are not supported in Fortran yet
I've found we claim to support non-rectangular loops, but don't actually
support those in Fortran, as can be seen on:
integer i, j
!$omp parallel do collapse(2)
do i = 0, 10
do j = 0, i
end do
end do
end
To support this, the Fortran FE needs to allow the valid forms of
non-rectangular loops and disallow others, so mainly it needs its
updated version of c-omp.c c_omp_check_loop_iv etc., plus for non-rectangular
lb or ub expressions emit a TREE_VEC instead of normal expression as the C/C++ FE
do, plus testsuite coverage.
2021-10-27 Jakub Jelinek <jakub@redhat.com>
* libgomp.texi (OpenMP 5.0): Mention that Non-rectangular loop nests
aren't implemented for Fortran yet.
| -rw-r--r-- | libgomp/libgomp.texi | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libgomp/libgomp.texi b/libgomp/libgomp.texi index 6306e97..fd747b9 100644 --- a/libgomp/libgomp.texi +++ b/libgomp/libgomp.texi @@ -189,7 +189,7 @@ The OpenMP 4.5 specification is fully supported. @item @code{requires} directive @tab P @tab Only fulfillable requirement is @code{atomic_default_mem_order} @item @code{teams} construct outside an enclosing target region @tab Y @tab -@item Non-rectangular loop nests @tab Y @tab +@item Non-rectangular loop nests @tab P @tab Only C/C++ @item @code{!=} as relational-op in canonical loop form for C/C++ @tab Y @tab @item @code{nonmonotonic} as default loop schedule modifier for worksharing-loop constructs @tab Y @tab |