1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

Apple Open-Sources Their 64-bit ARM LLVM Back-End

Compiler

Published on 29 March 2014 12:48 PM EDT
Written by Michael Larabel in Compiler
9 Comments

Back in September of last year after Apple unveiled the iPhone 5S smart-phone with a 64-bit processor, they said they would ultimately open-source their 64-bit ARM compiler back-end... A half-year later, we're finally seeing this code that yields another AArch64 back-end for LLVM.

It took Apple quite a while to open-source their 64-bit ARM LLVM back-end and in the months since -- and going back further in 2013 -- the LLVM development community has taken on to developing their own AArch64 back-end with support of several ARM SoC vendors. Now that Apple has finally published their back-end, which they consider to be production quality and is used right now for compiling iOS and related components for the 64-bit ARM Apple hardware, they are wanting to merge their back-end into LLVM.

Apple's 64-bit ARM back-end supports not only iOS as a platform target but also Linux. James Grosbach of Apple shared, "First a bit of context to help jump-start the discussion. The ARM64 backend is a complete production quality implementation for ARM’s 64-bit architecture, AArch64. It supports both iOS and Linux as target platforms."

The approach Apple has laid out for merging this new 64-bit ARM back-end is to put it into the LLVM source tree and let it co-exist with the existing AArch64 back-end. Over time, developers will look at both code-bases, collaboration is to happen, and in the end the LLVM developers will decide what back-end to build upon and merge features into it from the competing back-end. The decision of what 64-bit ARM back-end should be the default to build upon and merge from the other back-end will be left up to LLVM contributors, but Apple is obviously pushing their ARM64 work.

Those wanting to learn more about Apple's AArch64 back-end plans for the LLVM compiler infrastructure and the patches that they have finally opened up, see this LLVM development list message. In the early hours of this morning, this commit landed the Apple ARM64 compiler back-end along with the initial Clang support.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux Hardware Reviews
  1. Acer B286HK: A 28-inch UHD LED 4K Monitor For As Low As $350
  2. Intel Xeon E5-1680 v3 & E5-2687W v3 Compared To The Core i7 5960X On Linux
  3. Intel 120GB 530 Series SSD Linux Performance
  4. Btrfs/EXT4/XFS/F2FS RAID 0/1/5/6/10 Linux Benchmarks On Four SSDs
Latest Linux Articles
  1. Mesa Git Yields Performance Improvements For Newer AMD GPUs
  2. Apple OS X 10.10 vs. Ubuntu 14.10 Performance
  3. Mesa 10.5-devel Brings Some Intel Haswell HD Graphics Changes Over Mesa 10.3
  4. NVIDIA vs. Nouveau Drivers With Linux 3.18 + Mesa 10.4-devel
Latest Linux News
  1. Wine 1.7.32 Updates Its Mono Engine
  2. Mesa 10.4 Release Candidate 3 Is Here For Weekend Testing
  3. GenodeOS 14.11 Now Supports Intel's Wireless Hardware
  4. Jolla Tablet Could Have Upgrades For MicroSDHC, Split Screen, 3.5G
  5. Intel Has Last Round Of DRM Changes For Linux 3.19, Starts Dropping DRI1/UMS
  6. Fedora 21 Release Candidate 1 Awaits Your Testing
  7. GCC 5 Adds Support For ARM's Cortex-A17
  8. KWayland Server Component Coming For KDE Plasma 5.2
  9. NVIDIA Posts Tegra Gallium3D Patch For K1+ Support
  10. Ubuntu 14.10 MacBook Air Tests With Linux 3.18, Mesa 10.5
Latest Forum Discussions
  1. Aliens vs predator for Linux
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. Hurrican SDL Port
  4. Roadmap to Catalyst 14.10 ?
  5. how to configure module phoromatic ?
  6. PulseAudio 6.0 Is Coming & Other Linux Audio Plans For The Future
  7. Debian Developer Resigns From The Systemd Maintainership Team
  8. Cant get working Kaveri APU - A10-7850k