LLVM 3.7 Release Notes


These are in-progress notes for the upcoming LLVM 3.7 release. You may prefer the LLVM 3.6 Release Notes.


This document contains the release notes for the LLVM Compiler Infrastructure, release 3.7. 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 Subversion 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

  • The minimum required Visual Studio version for building LLVM is now 2013 Update 4.
  • A new documentation page, Performance Tips for Frontend Authors, contains a collection of tips for frontend authors on how to generate IR which LLVM is able to effectively optimize.
  • The DataLayout is no longer optional. All the IR level optimizations expects it to be present and the API has been changed to use a reference instead of a pointer to make it explicit. The Module owns the datalayout and it has to match the one attached to the TargetMachine for generating code.
  • ... next change ...

Changes to the ARM Backend

During this release ...

Changes to the MIPS Target

During this release ...

Changes to the PowerPC Target

During this release ...

Changes to the OCaml bindings

During this release ...

External Open Source Projects Using LLVM 3.7

An exciting aspect of LLVM is that it is used as an enabling technology for a lot of other language and tools projects. This section lists some of the projects that have already been updated to work with LLVM 3.7.

  • 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 Subversion 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.