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author | Hans Wennborg <hans@hanshq.net> | 2018-01-16 15:43:57 +0000 |
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committer | Hans Wennborg <hans@hanshq.net> | 2018-01-16 15:43:57 +0000 |
commit | 46dbd51f523128d92890d4cb9e202d3645ba158b (patch) | |
tree | 2f129b3b7338c6b638ddd88e1370110807d7677e | |
parent | af83b0c09a2b15bd10a08ac7ae431f1297ce90ea (diff) | |
download | clang-46dbd51f523128d92890d4cb9e202d3645ba158b.tar.gz |
Merging r322018:
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r322018 | abataev | 2018-01-08 11:02:51 -0800 (Mon, 08 Jan 2018) | 9 lines
[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
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_60@322564 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r-- | docs/OpenMPSupport.rst | 68 | ||||
-rw-r--r-- | docs/index.rst | 1 |
2 files changed, 69 insertions, 0 deletions
diff --git a/docs/OpenMPSupport.rst b/docs/OpenMPSupport.rst new file mode 100644 index 0000000000..f4ff3d36cf --- /dev/null +++ b/docs/OpenMPSupport.rst @@ -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. + diff --git a/docs/index.rst b/docs/index.rst index 342ab74d2d..ed479534ee 100644 --- a/docs/index.rst +++ b/docs/index.rst @@ -39,6 +39,7 @@ Using Clang as a Compiler SourceBasedCodeCoverage Modules MSVCCompatibility + OpenMPSupport ThinLTO CommandGuide/index FAQ |