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LLVM 3.5 Release Notes

Warning

These are in-progress notes for the upcoming LLVM 3.5 release. You may prefer the LLVM 3.4 Release Notes.

Introduction

This document contains the release notes for the LLVM Compiler Infrastructure, release 3.5. 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

  • All backends have been changed to use the MC asm printer and support for the non MC one has been removed.
  • The ARM back-end now has the EHABI exception handling enabled by default. Use -arm-disable-ehabi to turn it off (both landing pads and unwind tables).
  • Clang can now successfully self-host itself on Linux/Sparc64 and on FreeBSD/Sparc64.
  • LLVM now assumes the assembler supports .loc for generating debug line numbers. The old support for printing the debug line info directly was only used by llc and has been removed.
  • All inline assembly is parsed by the integrated assembler when it is enabled. Previously this was only the case for object-file output. It is now the case for assembly output as well. The integrated assembler can be disabled with the -no-integrated-as option,
  • llvm-ar now handles IR files like regular object files. In particular, a regular symbol table is created for symbols defined in IR files.
  • ... next change ...

External Open Source Projects Using LLVM 3.5

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 3.5.

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.