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69 lines
2.1 KiB
ReStructuredText
69 lines
2.1 KiB
ReStructuredText
.. raw:: html
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<style type="text/css">
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.none { background-color: #FFCCCC }
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.partial { background-color: #FFFF99 }
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.good { background-color: #CCFF99 }
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</style>
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.. role:: none
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.. role:: partial
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.. role:: good
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==================
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OpenMP Support
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==================
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Clang fully supports OpenMP 3.1 + some elements of OpenMP 4.5. Clang supports offloading to X86_64, AArch64 and PPC64[LE] devices.
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Support for Cuda devices is not ready yet.
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The status of major OpenMP 4.5 features support in Clang.
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Standalone directives
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=====================
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* #pragma omp [for] simd: :good:`Complete`.
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* #pragma omp declare simd: :partial:`Partial`. We support parsing/semantic
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analysis + generation of special attributes for X86 target, but still
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missing the LLVM pass for vectorization.
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* #pragma omp taskloop [simd]: :good:`Complete`.
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* #pragma omp target [enter|exit] data: :good:`Complete`.
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* #pragma omp target update: :good:`Complete`.
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* #pragma omp target: :good:`Complete`.
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* #pragma omp declare target: :partial:`Partial`. No full codegen support.
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* #pragma omp teams: :good:`Complete`.
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* #pragma omp distribute [simd]: :good:`Complete`.
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* #pragma omp distribute parallel for [simd]: :good:`Complete`.
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Combined directives
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===================
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* #pragma omp parallel for simd: :good:`Complete`.
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* #pragma omp target parallel: :partial:`Partial`. No support for the `depend` clauses.
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* #pragma omp target parallel for [simd]: :partial:`Partial`. No support for the `depend` clauses.
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* #pragma omp target simd: :partial:`Partial`. No support for the `depend` clauses.
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* #pragma omp target teams: :partial:`Partial`. No support for the `depend` clauses.
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* #pragma omp teams distribute [simd]: :good:`Complete`.
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* #pragma omp target teams distribute [simd]: :partial:`Partial`. No support for the `depend` clauses.
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* #pragma omp teams distribute parallel for [simd]: :good:`Complete`.
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* #pragma omp target teams distribute parallel for [simd]: :partial:`Partial`. No support for the `depend` clauses.
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Clang does not support any constructs/updates from upcoming OpenMP 5.0 except for `reduction`-based clauses in the `task` and `target`-based directives.
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