This revision was automatically updated to reflect the committed changes. Closed by commit rL245823: [OPENMP] Info about OpenMP Support in Users Manual, NFC. (authored by ABataev).
Changed prior to commit: http://reviews.llvm.org/D12152?vs=32790&id=32933#toc Repository: rL LLVM http://reviews.llvm.org/D12152 Files: cfe/trunk/docs/UsersManual.rst Index: cfe/trunk/docs/UsersManual.rst =================================================================== --- cfe/trunk/docs/UsersManual.rst +++ cfe/trunk/docs/UsersManual.rst @@ -1852,6 +1852,32 @@ Objective-C++ Language Features =============================== +.. _openmp: + +OpenMP Features +=============== + +Clang supports all OpenMP 3.1 directives and clauses. In addition, some +features of OpenMP 4.0 are supported. For example, ``#pragma omp simd``, +``#pragma omp for simd``, ``#pragma omp parallel for simd`` directives, extended +set of atomic constructs, ``proc_bind`` clause for all parallel-based +directives, ``depend`` clause for ``#pragma omp task`` directive (except for +array sections), ``#pragma omp cancel`` and ``#pragma omp cancellation point`` +directives, and ``#pragma omp taskgroup`` directive. + +OpenMP support is disabled by default. Use :option:`-fopenmp=libomp` to enable +it. Support for OpenMP can be disabled with :option:`-fno-openmp`. + +Controlling implementation limits +--------------------------------- + +.. option:: -fopenmp-use-tls + + Controls code generation for OpenMP threadprivate variables. In presence of + this option all threadprivate variables are generated the same way as thread + local variables, using TLS support. If :option:`-fno-openmp-use-tls` + is provided or target does not support TLS, code generation for threadprivate + variables relies on OpenMP runtime library. .. _target_features:
Index: cfe/trunk/docs/UsersManual.rst =================================================================== --- cfe/trunk/docs/UsersManual.rst +++ cfe/trunk/docs/UsersManual.rst @@ -1852,6 +1852,32 @@ Objective-C++ Language Features =============================== +.. _openmp: + +OpenMP Features +=============== + +Clang supports all OpenMP 3.1 directives and clauses. In addition, some +features of OpenMP 4.0 are supported. For example, ``#pragma omp simd``, +``#pragma omp for simd``, ``#pragma omp parallel for simd`` directives, extended +set of atomic constructs, ``proc_bind`` clause for all parallel-based +directives, ``depend`` clause for ``#pragma omp task`` directive (except for +array sections), ``#pragma omp cancel`` and ``#pragma omp cancellation point`` +directives, and ``#pragma omp taskgroup`` directive. + +OpenMP support is disabled by default. Use :option:`-fopenmp=libomp` to enable +it. Support for OpenMP can be disabled with :option:`-fno-openmp`. + +Controlling implementation limits +--------------------------------- + +.. option:: -fopenmp-use-tls + + Controls code generation for OpenMP threadprivate variables. In presence of + this option all threadprivate variables are generated the same way as thread + local variables, using TLS support. If :option:`-fno-openmp-use-tls` + is provided or target does not support TLS, code generation for threadprivate + variables relies on OpenMP runtime library. .. _target_features:
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