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183 lines
4.7 KiB
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183 lines
4.7 KiB
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============================
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LLVM |release| Release Notes
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============================
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.. contents::
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:local:
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.. only:: PreRelease
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.. warning::
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These are in-progress notes for the upcoming LLVM |version| release.
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Release notes for previous releases can be found on
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`the Download Page <https://releases.llvm.org/download.html>`_.
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Introduction
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============
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This document contains the release notes for the LLVM Compiler Infrastructure,
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release |release|. Here we describe the status of LLVM, including major improvements
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from the previous release, improvements in various subprojects of LLVM, and
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some of the current users of the code. All LLVM releases may be downloaded
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from the `LLVM releases web site <https://llvm.org/releases/>`_.
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For more information about LLVM, including information about the latest
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release, please check out the `main LLVM web site <https://llvm.org/>`_. If you
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have questions or comments, the `Discourse forums
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<https://discourse.llvm.org>`_ is a good place to ask
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them.
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Note that if you are reading this file from a Git checkout or the main
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LLVM web page, this document applies to the *next* release, not the current
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one. To see the release notes for a specific release, please see the `releases
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page <https://llvm.org/releases/>`_.
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Non-comprehensive list of changes in this release
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=================================================
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.. NOTE
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For small 1-3 sentence descriptions, just add an entry at the end of
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this list. If your description won't fit comfortably in one bullet
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point (e.g. maybe you would like to give an example of the
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functionality, or simply have a lot to talk about), see the `NOTE` below
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for adding a new subsection.
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* ...
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Update on required toolchains to build LLVM
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-------------------------------------------
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LLVM is now built with C++17 by default. This means C++17 can be used in
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the code base.
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The previous "soft" toolchain requirements have now been changed to "hard".
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This means that the the following versions are now required to build LLVM
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and there is no way to suppress this error.
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* GCC >= 7.1
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* Clang >= 5.0
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* Apple Clang >= 9.3
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* Visual Studio 2019 >= 16.7
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Changes to the LLVM IR
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----------------------
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Changes to building LLVM
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------------------------
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Changes to TableGen
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-------------------
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Changes to the AArch64 Backend
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------------------------------
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Changes to the AMDGPU Backend
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-----------------------------
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Changes to the ARM Backend
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--------------------------
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Changes to the AVR Backend
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--------------------------
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* ...
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Changes to the DirectX Backend
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------------------------------
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Changes to the Hexagon Backend
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------------------------------
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* ...
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Changes to the MIPS Backend
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---------------------------
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* ...
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Changes to the PowerPC Backend
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------------------------------
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* ...
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Changes to the RISC-V Backend
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-----------------------------
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Changes to the WebAssembly Backend
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----------------------------------
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* ...
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Changes to the Windows Target
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-----------------------------
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* For MinGW, generate embedded ``-exclude-symbols:`` directives for symbols
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with hidden visibility, omitting them from automatic export of all symbols.
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This roughly makes hidden visibility work like it does for other object
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file formats.
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Changes to the X86 Backend
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--------------------------
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Changes to the OCaml bindings
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-----------------------------
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Changes to the C API
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--------------------
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Changes to the Go bindings
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--------------------------
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Changes to the FastISel infrastructure
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--------------------------------------
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* ...
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Changes to the DAG infrastructure
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---------------------------------
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Changes to the Metadata Info
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---------------------------------
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* Add Module Flags Metadata ``stack-protector-guard-symbol`` which specify a
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symbol for addressing the stack-protector guard.
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Changes to the Debug Info
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---------------------------------
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During this release ...
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Changes to the LLVM tools
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---------------------------------
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Changes to LLDB
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---------------------------------
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Changes to Sanitizers
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---------------------
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Other Changes
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-------------
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External Open Source Projects Using LLVM 15
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===========================================
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* A project...
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Additional Information
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======================
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A wide variety of additional information is available on the `LLVM web page
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<https://llvm.org/>`_, in particular in the `documentation
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<https://llvm.org/docs/>`_ section. The web page also contains versions of the
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API documentation which is up-to-date with the Git version of the source
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code. You can access versions of these documents specific to this release by
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going into the ``llvm/docs/`` directory in the LLVM tree.
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If you have any questions or comments about LLVM, please feel free to contact
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us via the `Discourse forums <https://discourse.llvm.org>`_.
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