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LLVM {{env.config.release}} Release Notes
=========================================

```{contents}
```

````{only} PreRelease
```{warning} These are in-progress notes for the upcoming LLVM {{env.config.release}}
             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 LLVM Compiler Infrastructure,
release {{env.config.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](https://llvm.org/releases/).

For more information about LLVM, including information about the latest
release, please check out the [main LLVM web site](https://llvm.org/).  If you
have questions or comments, the [Discourse forums](https://discourse.llvm.org)
is a good place to ask them.

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](https://llvm.org/releases/).

Non-comprehensive list of changes in this release
=================================================

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* ...

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subsection about it right here. You can copy the following boilerplate:

Special New Feature
-------------------

Makes programs 10x faster by doing Special New Thing.
-->

Changes to the LLVM IR
----------------------

* The `ptrtoaddr` instruction was introduced. This instruction returns the
  address component of a pointer type variable but unlike `ptrtoint` does not
  capture provenance ([#125687](https://github.com/llvm/llvm-project/pull/125687)).

Changes to LLVM infrastructure
------------------------------

Changes to building LLVM
------------------------

Changes to TableGen
-------------------

Changes to Interprocedural Optimizations
----------------------------------------

Changes to Vectorizers
----------------------------------------

* Added initial support for copyable elements in SLP, which models copyable
  elements as add <element>, 0, i.e. uses identity constants for missing lanes.
* SLP vectorizer supports initial recognition of FMA/FMAD pattern

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
-----------------------------

* The loop vectorizer now performs tail folding by default on RISC-V, which
  removes the need for a scalar epilogue loop. To restore the previous behaviour
  use `-prefer-predicate-over-epilogue=scalar-epilogue`.
* `llvm-objdump` now has basic support for switching between disassembling code
  and data using mapping symbols such as `$x` and `$d`. Switching architectures
  using `$x` with an architecture string suffix is not yet supported.
* Ssctr and Smctr extensions are no longer experimental.

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
--------------------

Changes to the CodeGen infrastructure
-------------------------------------

Changes to the Metadata Info
---------------------------------

Changes to the Debug Info
---------------------------------

Changes to the LLVM tools
---------------------------------

Changes to LLDB
---------------------------------

* LLDB can now set breakpoints, show backtraces, and display variables when
  debugging Wasm with supported runtimes (WAMR and V8).

Changes to BOLT
---------------------------------

Changes to Sanitizers
---------------------

Other Changes
-------------

External Open Source Projects Using LLVM {{env.config.release}}
===============================================================

* A project...

Additional Information
======================

A wide variety of additional information is available on the
[LLVM web page](https://llvm.org/), in particular in the
[documentation](https://llvm.org/docs/) 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](https://discourse.llvm.org).