forked from OSchip/llvm-project
69 lines
2.1 KiB
ReStructuredText
69 lines
2.1 KiB
ReStructuredText
.. 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: :good:`Complete`.
|
|
|
|
* #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: :good:`Complete`.
|
|
|
|
* #pragma omp target parallel for [simd]: :good:`Complete`.
|
|
|
|
* #pragma omp target simd: :good:`Complete`.
|
|
|
|
* #pragma omp target teams: :good:`Complete`.
|
|
|
|
* #pragma omp teams distribute [simd]: :good:`Complete`.
|
|
|
|
* #pragma omp target teams distribute [simd]: :good:`Complete`.
|
|
|
|
* #pragma omp teams distribute parallel for [simd]: :good:`Complete`.
|
|
|
|
* #pragma omp target teams distribute parallel for [simd]: :good:`Complete`.
|
|
|
|
Clang does not support any constructs/updates from upcoming OpenMP 5.0 except for `reduction`-based clauses in the `task` and `target`-based directives.
|
|
In addition, the LLVM OpenMP runtime `libomp` supports the OpenMP Tools Interface (OMPT) on x86, x86_64, AArch64, and PPC64 on Linux, Windows, and mac OS.
|