rebase

[libc++] implement adjacent_view

ci

ci

ci

ci

Update libcxx/include/__ranges/zip_utils.h

Co-authored-by: Louis Dionne <ldionne.2@gmail.com>

review

review

benchmark

format

fix comma

fix comma

lwg4482

rebase error

[LLVM][CMake] Build examples for llvm-test-depends

Build examples and example plug-ins by default when running tests. If
examples are unwanted, they can still be disabled completely using
LLVM_INCLUDE_EXAMPLES=OFF. Plugin tests depend on examples and it is
beneficial to test them by default. By default, Examples will still not
be included in the default target or be installed, this remains
controlled by LLVM_BUILD_EXAMPLES (which defaults to OFF).

The additional cost for building examples for tests is 17 compilation
units (12 C++, 5 C), which should be tolerable.

I don't know how broken the examples currently are in the various build
configurations, but if we find breakage, it would be good to fix it.

Pull Request: #171998

Update libcxx/include/__ranges/adjacent_view.h

Co-authored-by: Louis Dionne <ldionne.2@gmail.com>

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undo rebase

ci

Author: huixie90

libcxx/docs/ReleaseNotes/22.rst

@@ -39,7 +39,7 @@ Implemented Papers
 ------------------
 
 - P2321R2: ``zip`` (`Github <https://llvm.org/PR105169>`__) (The paper is partially implemented. ``zip_transform_view``
-  is implemented in this release)
+  and `adjacent_view` are implemented in this release)
 - P2988R12: ``std::optional<T&>`` (`Github <https://llvm.org/PR148131>`__)
 - P3044R2: sub-``string_view`` from ``string`` (`Github <https://llvm.org/PR148140>`__)
 - P3223R2: Making ``std::istream::ignore`` less surprising (`Github <https://llvm.org/PR148178>`__)

libcxx/include/CMakeLists.txt

@@ -700,6 +700,7 @@ set(files
   __random/uniform_real_distribution.h
   __random/weibull_distribution.h
   __ranges/access.h
+  __ranges/adjacent_view.h
   __ranges/all.h
   __ranges/as_rvalue_view.h
   __ranges/chunk_by_view.h
@@ -788,6 +789,7 @@ set(files
   __tuple/tuple_like.h
   __tuple/tuple_like_no_subrange.h
   __tuple/tuple_size.h
+  __tuple/tuple_transform.h
   __type_traits/add_cv_quals.h
   __type_traits/add_pointer.h
   __type_traits/add_reference.h