commit | 336973b59502a4616e4b5cbaca9bcc5b5b980783 | [log] [tgz] |
---|---|---|
author | Louis Dionne <ldionne@apple.com> | Tue Jul 16 17:29:09 2019 +0000 |
committer | Copybara-Service <copybara-worker@google.com> | Tue Sep 01 14:43:36 2020 -0700 |
tree | c39747b6270624b779a2774fc6f3747be729c9f8 | |
parent | 9670dd3fd05e349166979ea758ff8a84c337dea1 [diff] |
[pstl] Use std::transform_reduce instead of hand-rolled implementation llvm-svn: 366233 GitOrigin-RevId: 3559fcd1149b339757b10365a4b24161b6ef71a5
Parallel STL is an implementation of the C++ standard library algorithms with support for execution policies, as specified in ISO/IEC 14882:2017 standard, commonly called C++17. The implementation also supports the unsequenced execution policy specified in Parallelism TS version 2 and proposed for the next version of the C++ standard in the C++ working group paper P1001. Parallel STL offers efficient support for both parallel and vectorized execution of algorithms. For sequential execution, it relies on an available implementation of the C++ standard library.
To use Parallel STL, you must have the following software installed:
unseq
and par_unseq
policies only have effect with compilers that support #pragma omp simd
or #pragma simd
.includes
, inplace_merge
, merge
, nth_element
, partial_sort
, partial_sort_copy
, set_difference
, set_intersection
, set_symmetric_difference
, set_union
, sort
, stable_partition
, stable_sort
, unique
.exclusive_scan
, inclusive_scan
, transform_exclusive_scan
, transform_inclusive_scan
shall be DefaultConstructible. A default constructed-instance of the initial value type shall be the identity element for the specified binary operation.max_element
, min_element
, minmax_element
, partial_sort
, partial_sort_copy
, sort
, stable_sort
the dereferenced value type of the provided iterators shall be DefaultConstructible.remove
, remove_if
, unique
the dereferenced value type of the provided iterators shall be MoveConstructible.copy_if
, inplace_merge
, partial_sort
, partial_sort_copy
, partition_copy
, remove
, remove_if
, rotate
, sort
, stable_sort
, unique
, unique_copy
.