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| author | Alexey Bataev <a.bataev@hotmail.com> | 2016-03-03 05:21:39 +0000 |
|---|---|---|
| committer | Alexey Bataev <a.bataev@hotmail.com> | 2016-03-03 05:21:39 +0000 |
| commit | 4ee889aa07e9c2a43a36c114736c3fa53dffb346 (patch) | |
| tree | c45db0c313de2f953852a1f5b5078a5c006f72ec /include/clang/Basic/OpenMPKinds.def | |
| parent | af3eb28edaebdc2688c0a7420e91aef8f30e7921 (diff) | |
[OPENMP 4.0] Initial support for 'omp declare reduction' construct.
Add parsing, sema analysis and serialization/deserialization for 'declare reduction' construct.
User-defined reductions are defined as
#pragma omp declare reduction( reduction-identifier : typename-list : combiner ) [initializer ( initializer-expr )]
These custom reductions may be used in 'reduction' clauses of OpenMP constructs. The combiner specifies how partial results can be combined into a single value. The
combiner can use the special variable identifiers omp_in and omp_out that are of the type of the variables being reduced with this reduction-identifier. Each of them will
denote one of the values to be combined before executing the combiner. It is assumed that the special omp_out identifier will refer to the storage that holds the resulting
combined value after executing the combiner.
As the initializer-expr value of a user-defined reduction is not known a priori the initializer-clause can be used to specify one. Then the contents of the initializer-clause
will be used as the initializer for private copies of reduction list items where the omp_priv identifier will refer to the storage to be initialized. The special identifier
omp_orig can also appear in the initializer-clause and it will refer to the storage of the original variable to be reduced.
Differential Revision: http://reviews.llvm.org/D11182
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@262582 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/clang/Basic/OpenMPKinds.def')
| -rw-r--r-- | include/clang/Basic/OpenMPKinds.def | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/clang/Basic/OpenMPKinds.def b/include/clang/Basic/OpenMPKinds.def index 74a3f825c5..030824d2c1 100644 --- a/include/clang/Basic/OpenMPKinds.def +++ b/include/clang/Basic/OpenMPKinds.def @@ -155,6 +155,7 @@ OPENMP_DIRECTIVE_EXT(parallel_for_simd, "parallel for simd") OPENMP_DIRECTIVE_EXT(parallel_sections, "parallel sections") OPENMP_DIRECTIVE_EXT(for_simd, "for simd") OPENMP_DIRECTIVE_EXT(cancellation_point, "cancellation point") +OPENMP_DIRECTIVE_EXT(declare_reduction, "declare reduction") OPENMP_DIRECTIVE(taskloop) OPENMP_DIRECTIVE_EXT(taskloop_simd, "taskloop simd") OPENMP_DIRECTIVE(distribute) |