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LLVM |release| Release Notes
.. contents::
.. only:: PreRelease
.. warning::
These are in-progress notes for the upcoming LLVM |version| release.
Release notes for previous releases can be found on
`the Download Page <>`_.
This document contains the release notes for the LLVM Compiler Infrastructure,
release |release|. Here we describe the status of LLVM, including major improvements
from the previous release, improvements in various subprojects of LLVM, and
some of the current users of the code. All LLVM releases may be downloaded
from the `LLVM releases web site <>`_.
For more information about LLVM, including information about the latest
release, please check out the `main LLVM web site <>`_. If you
have questions or comments, the `Discourse forums
<>`_ is a good place to ask
Note that if you are reading this file from a Git checkout or the main
LLVM 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 <>`_.
Non-comprehensive list of changes in this release
For small 1-3 sentence descriptions, just add an entry at the end of
this list. If your description won't fit comfortably in one bullet
point (e.g. maybe you would like to give an example of the
functionality, or simply have a lot to talk about), see the `NOTE` below
for adding a new subsection.
* ...
Update on required toolchains to build LLVM
Changes to the LLVM IR
Changes to LLVM infrastructure
Changes to building LLVM
Changes to TableGen
- We can define type aliases via new keyword ``deftype``.
Changes to Interprocedural Optimizations
Changes to the AArch64 Backend
Changes to the AMDGPU Backend
Changes to the ARM Backend
Changes to the AVR Backend
Changes to the DirectX Backend
Changes to the Hexagon Backend
Changes to the LoongArch Backend
Changes to the MIPS Backend
Changes to the PowerPC Backend
Changes to the RISC-V Backend
* Added full support for the experimental Zabha (Byte and
Halfword Atomic Memory Operations) extension.
* Added assembler/disassembler support for the experimenatl Zalasr
(Load-Acquire and Store-Release) extension.
* The names of the majority of the S-prefixed (supervisor-level) extension
names in the RISC-V profiles specification are now recognised.
* Codegen support was added for the Zimop (May-Be-Operations) extension.
* The experimental Ssnpm, Smnpm, Smmpm, Sspm, and Supm 0.8.1 Pointer Masking extensions are supported.
* The experimental Ssqosid extension is supported.
Changes to the WebAssembly Backend
Changes to the Windows Target
Changes to the X86 Backend
Changes to the OCaml bindings
Changes to the Python bindings
Changes to the C API
* Added ``LLVMGetBlockAddressFunction`` and ``LLVMGetBlockAddressBasicBlock``
functions for accessing the values in a blockaddress constant.
Changes to the CodeGen infrastructure
Changes to the Metadata Info
Changes to the Debug Info
Changes to the LLVM tools
* llvm-nm and llvm-objdump can now print symbol information from linked
WebAssembly binaries, using information from exports or the "name"
section for functions, globals and data segments. Symbol addresses and sizes
are printed as offsets in the file, allowing for binary size analysis. Wasm
files using reference types and GC are also supported (but also only for
functions, globals, and data, and only for listing symbols and names).
Changes to LLDB
Changes to Sanitizers
Other Changes
External Open Source Projects Using LLVM 19
* A project...
Additional Information
A wide variety of additional information is available on the `LLVM web page
<>`_, in particular in the `documentation
<>`_ section. The web page also contains versions of the
API documentation which is up-to-date with the Git version of the source
code. You can access versions of these documents specific to this release by
going into the ``llvm/docs/`` directory in the LLVM tree.
If you have any questions or comments about LLVM, please feel free to contact
us via the `Discourse forums <>`_.