dcb38a4ef7
Since there will be many changes to LLDB on FreeBSD support in 23, create subheaders for FreeBSD to separate related changes into relevant subheaders. This also adds #178069 and #178306 in the release note. Signed-off-by: Minsoo Choo <minsoochoo0122@proton.me>
222 lines
6.9 KiB
Markdown
222 lines
6.9 KiB
Markdown
<!-- 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
|
|
----------------------
|
|
|
|
* Removed `llvm.convert.to.fp16` and `llvm.convert.from.fp16`
|
|
intrinsics. These are equivalent to `fptrunc` and `fpext` with half
|
|
with a bitcast.
|
|
|
|
* "denormal-fp-math" and "denormal-fp-math-f32" string attributes were
|
|
migrated to first-class denormal_fpenv attribute.
|
|
|
|
* The `"nooutline"` attribute is now writen as `nooutline`. Existing IR and
|
|
bitcode will be automatically updated.
|
|
|
|
Changes to LLVM infrastructure
|
|
------------------------------
|
|
|
|
* Removed TypePromoteFloat legalization from SelectionDAG
|
|
|
|
Changes to building LLVM
|
|
------------------------
|
|
|
|
Changes to TableGen
|
|
-------------------
|
|
|
|
Changes to Interprocedural Optimizations
|
|
----------------------------------------
|
|
|
|
Changes to Vectorizers
|
|
----------------------
|
|
|
|
Changes to the AArch64 Backend
|
|
------------------------------
|
|
|
|
Changes to the AMDGPU Backend
|
|
-----------------------------
|
|
|
|
* Initial support for gfx1310
|
|
|
|
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
|
|
--------------------------------
|
|
|
|
* DWARF fission is now compatible with linker relaxations, allowing `-gsplit-dwarf` and `-mrelax`
|
|
to be used together when building for the LoongArch platform.
|
|
|
|
Changes to the MIPS Backend
|
|
---------------------------
|
|
|
|
Changes to the NVPTX Backend
|
|
----------------------------
|
|
|
|
* The default SM version has been changed from `sm_30` to `sm_75`. `sm_75` is
|
|
the oldest GPU variant compatible with the widest range of recent major CUDA
|
|
Toolkit versions (11/12/13).
|
|
|
|
Changes to the PowerPC Backend
|
|
------------------------------
|
|
|
|
Changes to the RISC-V Backend
|
|
-----------------------------
|
|
|
|
* `llvm-objdump` now has support for `--symbolize-operands` with RISC-V.
|
|
* `-mcpu=spacemit-x100` was added.
|
|
* Change P extension version to match the 019 draft specification. Encoded in `-march` as `0p19`.
|
|
* Mnemonics for MOP/HINT-based instructions (`lpad`, `pause`, `ntl.*`, `c.ntl.*`,
|
|
`sspush`, `sspopchk`, `ssrdp`, `c.sspush`, `c.sspopchk`) are now always
|
|
available in the assembler and disassembler without requiring their respective
|
|
extensions.
|
|
* Adds experimental assembler support for the 'Zvabd` (RISC-V Integer Vector
|
|
Absolute Difference) extension.
|
|
|
|
Changes to the WebAssembly Backend
|
|
----------------------------------
|
|
|
|
Changes to the Windows Target
|
|
-----------------------------
|
|
|
|
* The `.seh_startchained` and `.seh_endchained` assembly instructions have been removed and replaced
|
|
with a new `.seh_splitchained` instruction.
|
|
|
|
Changes to the X86 Backend
|
|
--------------------------
|
|
|
|
* `.att_syntax` directive is now emitted for assembly files when AT&T syntax is
|
|
in use. This matches the behaviour of Intel syntax and aids with
|
|
compatibility when changing the default Clang syntax to the Intel syntax.
|
|
|
|
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-objcopy` no longer corrupts the symbol table when `--update-section` is called for ELF files.
|
|
* `FileCheck` option `-check-prefix` now accepts a comma-separated list of
|
|
prefixes, making it an alias of the existing `-check-prefixes` option.
|
|
|
|
Changes to LLDB
|
|
---------------
|
|
|
|
### FreeBSD
|
|
|
|
#### Userspace Debugging
|
|
|
|
* Support for MIPS64 has been removed.
|
|
* The minimum assumed FreeBSD version is now 14. The effect of which is that watchpoints are
|
|
assumed to be supported.
|
|
|
|
#### Kernel Debugging
|
|
|
|
* The crashed thread is now automatically selected on start.
|
|
* Threads are listed in incrmental order by pid then by tid.
|
|
|
|
Changes to BOLT
|
|
---------------
|
|
|
|
Changes to Sanitizers
|
|
---------------------
|
|
|
|
Other Changes
|
|
-------------
|
|
|
|
External Open Source Projects Using LLVM {{env.config.release}}
|
|
===============================================================
|
|
|
|
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).
|