7581cb68f9
Since lldb 20, these have had no effect: https://releases.llvm.org/20.1.0/docs/ReleaseNotes.html#changes-to-lldb > lldb-server now listens to a single port for gdbserver connections and > provides that port to the connection handler processes. This means that > only 2 ports need to be opened in the firewall (one for the lldb-server > platform, one for gdbserver connections). In addition, due to this work, lldb-server now works on Windows in the server mode. Remove them.
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<!-- This document is written in Markdown and uses extra directives provided by
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MyST (https://myst-parser.readthedocs.io/en/latest/). -->
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LLVM {{env.config.release}} Release Notes
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=========================================
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```{contents}
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```
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````{only} PreRelease
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```{warning} These are in-progress notes for the upcoming LLVM {{env.config.release}}
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release. 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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```
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````
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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 {{env.config.release}}. Here we describe the status of LLVM, including
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major improvements from the previous release, improvements in various subprojects
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of LLVM, and some of the current users of the code. All LLVM releases may be
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downloaded 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](https://discourse.llvm.org)
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is a good place to ask 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
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[releases 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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<!-- 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 comment below
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for adding a new subsection. -->
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* ...
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<!-- If you would like to document a larger change, then you can add a
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subsection about it right here. You can copy the following boilerplate:
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Special New Feature
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-------------------
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Makes programs 10x faster by doing Special New Thing.
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-->
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Changes to the LLVM IR
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----------------------
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* The `nocapture` attribute has been replaced by `captures(none)`.
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* The constant expression variants of the following instructions have been
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removed:
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* `mul`
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* Updated semantics of `llvm.type.checked.load.relative` to match that of
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`llvm.load.relative`.
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Changes to LLVM infrastructure
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------------------------------
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* Removed support for target intrinsics being defined in the target directories
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themselves (i.e., the `TargetIntrinsicInfo` class).
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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 Interprocedural Optimizations
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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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* Enabled the
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[FWD_PROGRESS bit](https://llvm.org/docs/AMDGPUUsage.html#code-object-v3-kernel-descriptor)
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for all GFX ISAs greater or equal to 10, for the AMDHSA OS.
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* Bump the default `.amdhsa_code_object_version` to 6. ROCm 6.3 is required to run any program compiled with COV6.
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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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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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* The default Hexagon architecture version in ELF object files produced by
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the tools such as llvm-mc is changed to v68. This version will be set if
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the user does not provide the CPU version in the command line.
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Changes to the LoongArch Backend
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--------------------------------
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* Changing the default code model from `small` to `medium` for 64-bit.
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Changes to the MIPS Backend
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---------------------------
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* `-mcpu=i6400` and `-mcpu=i6500` were added.
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Changes to the PowerPC Backend
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------------------------------
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Changes to the RISC-V Backend
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-----------------------------
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* Adds experimental assembler support for the Qualcomm uC 'Xqcilb` (Long Branch)
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extension.
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* Adds experimental assembler support for the Qualcomm uC 'Xqcili` (Load Large Immediate)
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extension.
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* Adds experimental assembler support for the Qualcomm uC 'Xqcilia` (Large Immediate Arithmetic)
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extension.
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* Adds experimental assembler support for the Qualcomm uC 'Xqcibm` (Bit Manipulation)
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extension.
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* Adds experimental assembler support for the Qualcomm uC 'Xqcibi` (Branch Immediate)
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extension.
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* Adds experimental assembler and code generation support for the Qualcomm
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'Xqccmp' extension, which is a frame-pointer convention compatible version of
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Zcmp.
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* Added non-quadratic ``log-vrgather`` cost model for ``vrgather.vv`` instruction
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* Adds experimental assembler support for the Qualcomm uC 'Xqcisim` (Simulation Hint)
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extension.
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* Adds experimental assembler support for the Qualcomm uC 'Xqcisync` (Sync Delay)
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extension.
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* Adds experimental assembler support for the Qualcomm uC 'Xqciio` (External Input Output)
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extension.
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* Adds assembler support for the 'Zilsd` (Load/Store Pair Instructions)
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extension.
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* Adds assembler support for the 'Zclsd` (Compressed Load/Store Pair Instructions)
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extension.
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* Adds experimental assembler support for Zvqdotq.
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* Adds Support for Qualcomm's `qci-nest` and `qci-nonest` interrupt types, which
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use instructions from `Xqciint` to save and restore some GPRs during interrupt
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handlers.
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* When the experimental extension `Xqcili` is enabled, `qc.e.li` and `qc.li` may
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now be used to materialize immediates.
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* Adds assembler support for ``.option exact``, which disables automatic compression,
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and branch and linker relaxation. This can be disabled with ``.option noexact``,
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which is also the default.
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Changes to the WebAssembly Backend
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----------------------------------
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Changes to the Windows Target
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-----------------------------
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* `fp128` is now passed indirectly, meaning it uses the same calling convention
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as `i128`.
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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 Python bindings
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------------------------------
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Changes to the C API
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--------------------
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* The following functions for creating constant expressions have been removed,
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because the underlying constant expressions are no longer supported. Instead,
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an instruction should be created using the `LLVMBuildXYZ` APIs, which will
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constant fold the operands if possible and create an instruction otherwise:
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* `LLVMConstMul`
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* `LLVMConstNUWMul`
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* `LLVMConstNSWMul`
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Changes to the CodeGen infrastructure
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-------------------------------------
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Changes to the Metadata Info
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---------------------------------
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Changes to the Debug Info
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---------------------------------
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Changes to the LLVM tools
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---------------------------------
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* llvm-objcopy now supports the `--update-section` flag for intermediate Mach-O object files.
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* llvm-strip now supports continuing to process files on encountering an error.
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* In llvm-objcopy/llvm-strip's ELF port, `--discard-locals` and `--discard-all` now allow and preserve symbols referenced by relocations.
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([#47468](https://github.com/llvm/llvm-project/issues/47468))
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Changes to LLDB
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---------------------------------
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* When building LLDB with Python support, the minimum version of Python is now
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3.8.
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* LLDB now supports hardware watchpoints for AArch64 Windows targets. Windows
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does not provide API to query the number of supported hardware watchpoints.
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Therefore current implementation allows only 1 watchpoint, as tested with
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Windows 11 on the Microsoft SQ2 and Snapdragon Elite X platforms.
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* LLDB now steps through C++ thunks. This fixes an issue where previously, it
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wouldn't step into multiple inheritance virtual functions.
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* A statusline was added to command-line LLDB to show progress events and
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information about the current state of the debugger at the bottom of the
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terminal. This is on by default and can be configured using the
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`show-statusline` and `statusline-format` settings.
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* The `min-gdbserver-port` and `max-gdbserver-port` options have been removed
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from `lldb-server`'s platform mode. Since the changes to `lldb-server`'s port
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handling in LLDB 20, these options have had no effect.
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### Changes to lldb-dap
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* Breakpoints can now be set for specific columns within a line.
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* Function return value is now displayed on step-out.
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Changes to BOLT
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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 {{env.config.release}}
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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
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[LLVM web page](https://llvm.org/), in particular in the
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[documentation](https://llvm.org/docs/) section. The web page also contains
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versions of the API documentation which is up-to-date with the Git version of
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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.
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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).
|