| =========================================== |
| Libc++ 22.0.0 (In-Progress) Release Notes |
| =========================================== |
| |
| .. contents:: |
| :local: |
| :depth: 2 |
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| Written by the `Libc++ Team <https://libcxx.llvm.org>`_ |
| |
| .. warning:: |
| |
| These are in-progress notes for the upcoming libc++ 22.0.0 release. |
| Release notes for previous releases can be found on |
| `the Download Page <https://releases.llvm.org/download.html>`_. |
| |
| Introduction |
| ============ |
| |
| This document contains the release notes for the libc++ C++ Standard Library, |
| part of the LLVM Compiler Infrastructure, release 22.0.0. Here we describe the |
| status of libc++ in some detail, including major improvements from the previous |
| release and new feature work. For the general LLVM release notes, see `the LLVM |
| documentation <https://llvm.org/docs/ReleaseNotes.html>`_. All LLVM releases may |
| be downloaded from the `LLVM releases web site <https://llvm.org/releases/>`_. |
| |
| For more information about libc++, please see the `Libc++ Web Site |
| <https://libcxx.llvm.org>`_ or the `LLVM Web Site <https://llvm.org>`_. |
| |
| Note that if you are reading this file from a Git checkout or the |
| main Libc++ web page, this document applies to the *next* release, not |
| the current one. To see the release notes for a specific release, please |
| see the `releases page <https://llvm.org/releases/>`_. |
| |
| What's New in Libc++ 22.0.0? |
| ============================== |
| |
| Implemented Papers |
| ------------------ |
| |
| - P2321R2: ``zip`` (`Github <https://github.com/llvm/llvm-project/issues/105169>`__) (The paper is partially implemented. ``zip_transform_view`` is implemented in this release) |
| |
| Improvements and New Features |
| ----------------------------- |
| |
| - The performance of ``map::map(const map&)`` has been improved up to 2.3x |
| - The performance of ``map::operator=(const map&)`` has been improved by up to 11x |
| |
| Deprecations and Removals |
| ------------------------- |
| |
| Potentially breaking changes |
| ---------------------------- |
| |
| Announcements About Future Releases |
| ----------------------------------- |
| |
| ABI Affecting Changes |
| --------------------- |
| |
| Build System Changes |
| -------------------- |
