Author: abataev Date: Mon Jan 8 11:02:51 2018 New Revision: 322018 URL: http://llvm.org/viewvc/llvm-project?rev=322018&view=rev Log: [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 Added: cfe/trunk/docs/OpenMPSupport.rst Modified: cfe/trunk/docs/index.rst Added: cfe/trunk/docs/OpenMPSupport.rst URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/OpenMPSupport.rst?rev=322018&view=auto ============================================================================== --- cfe/trunk/docs/OpenMPSupport.rst (added) +++ cfe/trunk/docs/OpenMPSupport.rst Mon Jan 8 11:02:51 2018 @@ -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. + Modified: cfe/trunk/docs/index.rst URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/index.rst?rev=322018&r1=322017&r2=322018&view=diff ============================================================================== --- cfe/trunk/docs/index.rst (original) +++ cfe/trunk/docs/index.rst Mon Jan 8 11:02:51 2018 @@ -39,6 +39,7 @@ Using Clang as a Compiler SourceBasedCodeCoverage Modules MSVCCompatibility + OpenMPSupport ThinLTO CommandGuide/index FAQ _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
