LLVM Release Notes

Introduction

This document contains the release notes for the LLVM Compiler Infrastructure, 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.

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 LLVM Developer’s Mailing List is a good place to send 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

Changes to building LLVM

Changes to TableGen

Changes to the AArch64 Backend

Changes to the AMDGPU Backend

Changes to the ARM Backend

  • Added support for the Armv9-A, Armv9.1-A and Armv9.2-A architectures.

  • Added support for the Armv8.1-M PACBTI-M extension.

  • Added support for the Armv9-A, Armv9.1-A and Armv9.2-A architectures.

  • Added support for the Armv8.1-M PACBTI-M extension.

  • Removed the deprecation of ARMv8-A T32 Complex IT blocks. No deprecation warnings will be generated and -mrestrict-it is now always off by default. Previously it was on by default for Armv8 and off for all other architecture versions.

Changes to the AVR Backend

Changes to the Hexagon 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 X86 Backend

Changes to the OCaml bindings

Changes to the C API

Changes to the Go bindings

Changes to the FastISel infrastructure

Changes to the DAG infrastructure

Changes to the Debug Info

During this release …

Changes to the LLVM tools

Changes to LLDB

Changes to Sanitizers

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 mailing lists.