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Author SHA1 Message Date
Louis Dionne a7f9895cc1 [runtimes] Rename various libcpp-has-no-XYZ Lit features to just no-XYZ 
Since those features are general properties of the environment, it makes
sense to use them from libc++abi too, and so the name libcpp-has-no-xxx
doesn't make sense.

Differential Revision: https://reviews.llvm.org/D126482
 2022-05-27 15:24:45 -04:00
Louis Dionne 586efd52b9 [libc++][P0943] Add stdatomic.h header. 
* https://wg21.link/P0943
* https://eel.is/c++draft/stdatomic.h.syn

This is a re-application of 5d1c1a24, which was reverted in 987c7f407
because it broke the LLDB build.

Co-authored-by: Marek Kurdej <marek.kurdej@gmail.com>

Differential Revision: https://reviews.llvm.org/D97044
 2022-05-06 09:52:48 -04:00
Louis Dionne 987c7f407d [libc++] Revert <stdatomic.h> changes 
This reverts commits a30a7948d and 5d1c1a243, which broke the LLDB
data formatters tests because they build with modules in C++11 mode.

Differential Revision: https://reviews.llvm.org/D97044
 2022-02-15 12:59:14 -05:00
Louis Dionne a30a7948d5 [libc++] Fix broken stdatomic test on GCC 
The test would trigger -Wtautological-compare. I think that the little
we gain from comparing addresses isn't worth the added complexity to
work around the warning.
 2022-02-15 09:26:27 -05:00
Marek Kurdej 5d1c1a243c [libc++] [C++2b] [P0943] Add stdatomic.h header. 
* https://wg21.link/P0943
* https://eel.is/c++draft/stdatomic.h.syn

Differential Revision: https://reviews.llvm.org/D97044
 2022-02-14 16:39:22 -05:00