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<!-- This document is written in Markdown and uses extra directives provided by
MyST (https://myst-parser.readthedocs.io/en/latest/). -->
<!-- If you want to modify sections/contents permanently, you should modify both
ReleaseNotes.md and ReleaseNotesTemplate.txt. -->
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
=================================================
<!-- 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 comment below
for adding a new subsection. -->
* ...
<!-- If you would like to document a larger change, then you can add a
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
----------------------------------------
* Added `-enable-machine-outliner={optimistic-pgo,conservative-pgo}` to read
profile data to guide the machine outliner
([#154437](https://github.com/llvm/llvm-project/pull/154437)).
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.
* Add support for Zvfbfa (Additional BF16 vector compute support)
* Adds experimental support for the 'Zibi` (Branch with Immediate) extension.
* Add support for Zvfofp8min (OFP8 conversion extension)
* Adds assembler support for the Andes `XAndesvsinth` (Andes Vector Small Int Handling Extension).
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
---------------------------------
* `llvm-readelf` now dumps all hex format values in lower-case mode.
* Some code paths for supporting Python 2.7 in `llvm-lit` have been removed.
* Support for `%T` in lit has been removed.
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).
|
