commit | 1e1f0ea0d6597290b298c9e3e737d73e9e154ef3 | [log] [tgz] |
---|---|---|
author | Louis Dionne <ldionne@apple.com> | Tue Aug 13 11:50:26 2019 +0000 |
committer | Copybara-Service <copybara-worker@google.com> | Tue Sep 01 14:44:30 2020 -0700 |
tree | fe2a854a8612a815a935e415cc3c3f09516859f7 | |
parent | 4de88b585bc57a84135cb1fd41a89b75e2dad9d0 [diff] |
[pstl] Rename PARALLELSTL_BACKEND to PSTL_PARALLEL_BACKEND It makes more sense to name configuration options as PSTL_XXX. Also, I'm naming it PSTL_PARALLEL_BACKEND because we might introduce the ability to customize the vectorization backend, in which case PSTL_BACKEND would become ambiguous. llvm-svn: 368672 GitOrigin-RevId: 5065e7817393d9acf2689d3f666a1c375238a7e2
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
.