Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[OPENMP] Current status of OpenMP support.
Summary: Some info about supported features of OpenMP 4.5-5.0. Reviewers: hfinkel, rsmith Subscribers: kkwli0, Hahnfeld, cfe-commits Differential Revision: https://reviews.llvm.org/D39457 llvm-svn: 322018
- Loading branch information
1 parent
e61045f
commit 8ede819
Showing
2 changed files
with
69 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,68 @@ | ||
.. raw:: html | ||
|
||
<style type="text/css"> | ||
.none { background-color: #FFCCCC } | ||
.partial { background-color: #FFFF99 } | ||
.good { background-color: #CCFF99 } | ||
</style> | ||
|
||
.. role:: none | ||
.. role:: partial | ||
.. role:: good | ||
|
||
================== | ||
OpenMP Support | ||
================== | ||
|
||
Clang fully supports OpenMP 3.1 + some elements of OpenMP 4.5. Clang supports offloading to X86_64, AArch64 and PPC64[LE] devices. | ||
Support for Cuda devices is not ready yet. | ||
The status of major OpenMP 4.5 features support in Clang. | ||
|
||
Standalone directives | ||
===================== | ||
|
||
* #pragma omp [for] simd: :good:`Complete`. | ||
|
||
* #pragma omp declare simd: :partial:`Partial`. We support parsing/semantic | ||
analysis + generation of special attributes for X86 target, but still | ||
missing the LLVM pass for vectorization. | ||
|
||
* #pragma omp taskloop [simd]: :good:`Complete`. | ||
|
||
* #pragma omp target [enter|exit] data: :good:`Complete`. | ||
|
||
* #pragma omp target update: :good:`Complete`. | ||
|
||
* #pragma omp target: :partial:`Partial`. No support for the `depend` clauses. | ||
|
||
* #pragma omp declare target: :partial:`Partial`. No full codegen support. | ||
|
||
* #pragma omp teams: :good:`Complete`. | ||
|
||
* #pragma omp distribute [simd]: :good:`Complete`. | ||
|
||
* #pragma omp distribute parallel for [simd]: :good:`Complete`. | ||
|
||
Combined directives | ||
=================== | ||
|
||
* #pragma omp parallel for simd: :good:`Complete`. | ||
|
||
* #pragma omp target parallel: :partial:`Partial`. No support for the `depend` clauses. | ||
|
||
* #pragma omp target parallel for [simd]: :partial:`Partial`. No support for the `depend` clauses. | ||
|
||
* #pragma omp target simd: :partial:`Partial`. No support for the `depend` clauses. | ||
|
||
* #pragma omp target teams: :partial:`Partial`. No support for the `depend` clauses. | ||
|
||
* #pragma omp teams distribute [simd]: :good:`Complete`. | ||
|
||
* #pragma omp target teams distribute [simd]: :partial:`Partial`. No support for the and `depend` clauses. | ||
|
||
* #pragma omp teams distribute parallel for [simd]: :good:`Complete`. | ||
|
||
* #pragma omp target teams distribute parallel for [simd]: :partial:`Partial`. No full codegen support. | ||
|
||
Clang does not support any constructs/updates from upcoming OpenMP 5.0 except for `reduction`-based clauses in the `task` and `target`-based directives. | ||
|
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters