LLVM 17.0.0git Release Notes¶
- Introduction
- Non-comprehensive list of changes in this release
- Update on required toolchains to build LLVM
- Changes to the LLVM IR
- Changes to building LLVM
- Changes to TableGen
- 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
- Changes to the WebAssembly Backend
- Changes to the Windows Target
- Changes to the X86 Backend
- Changes to the OCaml bindings
- Changes to the C API
- Changes to the FastISel infrastructure
- Changes to the DAG infrastructure
- Changes to the Metadata Info
- Changes to the Debug Info
- Changes to the LLVM tools
- Changes to LLDB
- Changes to Sanitizers
- Other Changes
- External Open Source Projects Using LLVM 15
- Additional Information
Warning
These are in-progress notes for the upcoming LLVM 17 release. Release notes for previous releases can be found on the Download Page.
Introduction¶
This document contains the release notes for the LLVM Compiler Infrastructure, release 17.0.0git. 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 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.
Non-comprehensive list of changes in this release¶
- …
Changes to the LLVM IR¶
- Typed pointers are no longer supported. See the opaque pointers documentation for migration instructions.
Changes to the ARM Backend¶
- The hard-float ABI is now available in Armv8.1-M configurations that have integer MVE instructions (and therefore have FP registers) but no scalar or vector floating point computation.
Changes to the RISC-V Backend¶
- Assembler support for version 1.0.1 of the Zcb extension was added.
- Zca, Zcf, and Zcd extensions were upgraded to version 1.0.1.
Changes to the C API¶
LLVMContextSetOpaquePointers, a temporary API to pin to legacy typed pointer, has been removed.
Changes to the Debug Info¶
- The DWARFv5 feature of attaching DW_AT_default_value to defaulted template parameters will now be available in any non-strict DWARF mode and in a wider range of cases than previously. (D139953, D139988)
- The DW_AT_name on DW_AT_typedef`s for alias templates will now omit defaulted template parameters. (`D142268)
Changes to LLDB¶
- In the results of commands such as expr and frame var, type summaries will now omit defaulted template parameters. The full template parameter list can still be viewed with expr –raw-output/frame var –raw-output. (D141828)
External Open Source Projects Using LLVM 15¶
- 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.