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P1001R2 execution::unseq #44

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StephanTLavavej opened this issue Sep 6, 2019 · 0 comments · Fixed by #1111
Closed

P1001R2 execution::unseq #44

StephanTLavavej opened this issue Sep 6, 2019 · 0 comments · Fixed by #1111
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cxx20 C++20 feature fixed Something works now, yay!
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Conformance

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@StephanTLavavej
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StephanTLavavej commented Sep 6, 2019 •
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P1001R2 execution::unseq

This may need support from the compiler back-end (tracked by Microsoft-internal VSO-1143256).

Feature-test macro as of WG21-N4842 (increased from current value; note that this value differs from the "suggestion" in WG21-P1001):
#define __cpp_lib_execution 201902L
@StephanTLavavej StephanTLavavej added the cxx20 C++20 feature label Sep 6, 2019
@cbezault cbezault added this to the Conformance milestone May 7, 2020
BillyONeal added a commit to BillyONeal/STL that referenced this issue Jul 30, 2020
@BillyONeal
Implement execution::unseq. Resolves microsoftGH-44.
4265c10 
<execution>
* Add sequenced_policy and unseq.
* Mark sequenced_policy as being an execution policy.
* Add detection for this new policy to std::for_each and std::for_each_n, and use #pragma loop(ivdep) when supplied. We are not marking other algorithms because all other algorithms have something that makes the operative loop body not actually independent and the docs for #pragma loop(ivdep) suggest that is not allowed.
* Remove #pragma loop(ivdep) from std::transform because transform is callable such that _Dest == _First1 or _Dest == _First2.

<yvals_core.h>
* Mark proposal as implemented and change __cpp_lib_execution when C++20 is turned on.

instantiate_algorithms.hpp:
* Add unseq to execution policy matricies.

P0024R2_parallel_algorithms_for_each:
* Add testing for unseq.

VSO_0157762_feature_test_macros:
* Update test for new value of __cpp_lib_execution.
BillyONeal added a commit to BillyONeal/STL that referenced this issue Jul 30, 2020
@BillyONeal
Implement execution::unseq. Resolves microsoftGH-44.
fd8fd8b 
<execution>
* Add sequenced_policy and unseq.
* Mark sequenced_policy as being an execution policy.
* Add detection for this new policy to std::for_each and std::for_each_n, and use #pragma loop(ivdep) when supplied. We are not marking other algorithms because all other algorithms have something that makes the operative loop body not actually independent and the docs for #pragma loop(ivdep) suggest that is not allowed.
* Remove #pragma loop(ivdep) from std::transform because transform is callable such that _Dest == _First1 or _Dest == _First2.

<yvals_core.h>
* Mark proposal as implemented and change __cpp_lib_execution when C++20 is turned on.

instantiate_algorithms.hpp:
* Add unseq to execution policy matricies.

P0024R2_parallel_algorithms_for_each:
* Add testing for unseq.

VSO_0157762_feature_test_macros:
* Update test for new value of __cpp_lib_execution.
@BillyONeal BillyONeal mentioned this issue Jul 30, 2020
Merged
StephanTLavavej pushed a commit that referenced this issue Aug 2, 2020
@BillyONeal
P1001R2 execution::unseq (#1111)
8ec6b33 
Resolves #44.
@StephanTLavavej StephanTLavavej added fixed Something works now, yay! and removed work in progress labels Aug 2, 2020
@achabense achabense mentioned this issue Jul 24, 2023
Merged
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Implement execution::unseq. BillyONeal/STL
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@cbezault @StephanTLavavej