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13==================
14OpenMP Support
15==================
16
17Clang fully supports OpenMP 3.1 + some elements of OpenMP 4.5. Clang supports offloading to X86_64, AArch64 and PPC64[LE] devices.
18Support for Cuda devices is not ready yet.
19The status of major OpenMP 4.5 features support in Clang.
20
21Standalone directives
22=====================
23
24* #pragma omp [for] simd: :good:`Complete`.
25
26* #pragma omp declare simd: :partial:`Partial`.  We support parsing/semantic
27  analysis + generation of special attributes for X86 target, but still
28  missing the LLVM pass for vectorization.
29
30* #pragma omp taskloop [simd]: :good:`Complete`.
31
32* #pragma omp target [enter|exit] data: :good:`Complete`.
33
34* #pragma omp target update: :good:`Complete`.
35
36* #pragma omp target: :good:`Complete`.
37
38* #pragma omp declare target: :partial:`Partial`.  No full codegen support.
39
40* #pragma omp teams: :good:`Complete`.
41
42* #pragma omp distribute [simd]: :good:`Complete`.
43
44* #pragma omp distribute parallel for [simd]: :good:`Complete`.
45
46Combined directives
47===================
48
49* #pragma omp parallel for simd: :good:`Complete`.
50
51* #pragma omp target parallel: :good:`Complete`.
52
53* #pragma omp target parallel for [simd]: :good:`Complete`.
54
55* #pragma omp target simd: :good:`Complete`.
56
57* #pragma omp target teams: :good:`Complete`.
58
59* #pragma omp teams distribute [simd]: :good:`Complete`.
60
61* #pragma omp target teams distribute [simd]: :good:`Complete`.
62
63* #pragma omp teams distribute parallel for [simd]: :good:`Complete`.
64
65* #pragma omp target teams distribute parallel for [simd]: :good:`Complete`.
66
67Clang does not support any constructs/updates from upcoming OpenMP 5.0 except for `reduction`-based clauses in the `task` and `target`-based directives.
68In 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.
69