tree ac70543fdaae3ba9cd9a7ae8ccea62218204fa62
parent 78f42b79d5c0300a4709df18841ec22fb1362d3c
author Arthur O'Dwyer <arthur.j.odwyer@gmail.com> 1606953301 -0500
committer Copybara-Service <copybara-worker@google.com> 1607475074 -0800

[libc++] Update and normalize the "all the headers" tests.

Some C++20 headers weren't added properly to all three of these
test files. Add them, and take the time to normalize the formatting
so that

    diff <(grep '#include' foo.cpp) <(grep '#include' bar.cpp)

shows no diffs (except that `no_assert_include` deliberately
excludes `<cassert>`).

- Add macro guards to <{barrier,latch,semaphore}>.
- Add macro guards to <experimental/simd>.
- Remove an include of <cassert> from <semaphore>.
- Instead, include <cassert> in the semaphore tests.

Differential Revision: https://reviews.llvm.org/D92525

GitOrigin-RevId: d430330788c646afcb2c32c8f24c63210b518a32