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 Benchmarking Platform
Phoromatic Test Orchestration

Radeon LLVM GPU Back-End Stripped From Mesa

AMD

Published on 07 January 2013 03:10 PM EST
Written by Michael Larabel in AMD
14 Comments

The R600 LLVM back-end for the Radeon Gallium3D driver was removed from Mesa.

The Radeon LLVM back-end, which is more than 19,000 lines of code, was dropped from Mesa with this commit on Friday.

Dropping the back-end happened because the R600 back-end was merged into upstream LLVM. Unfortunately the upstreaming of this AMD GPU back-end was done too late for the LLVM 3.2 release that happened in December and so it will not be until LLVM 3.3 later this year where we will see the R600 back-end. As a result, there's no external release of LLVM yet with this back-end while it's already been removed from Mesa.

For the next Mesa release (Mesa 9.1 or Mesa 10.0), Tom Stellard of AMD recommends using his third-party LLVM repository that has his latest Radeon R600 back-end improvements. For the release after that (the Mesa release of H2'2013), by then there should be a stable LLVM release with this properly supported back-end.

The AMD R600 GPU back-end to LLVM is needed if using the Radeon LLVM shader compiler and wanting to use Gallium3D OpenCL support with modern Radeon GPUs.

A follow-up commit from Friday allows for LLVM 3.2 and newer to be used in conjunction with the latest Mesa Git master.

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 Articles & Reviews
  1. GeForce GTX 750 Series: Nouveau vs. NVIDIA Linux Driver Performance
  2. GLAMOR + RadeonSI 2D Acceleration Is Quite Good For Open-Source AMD 2D Performance
  3. AMD Radeon R9 290 OpenGL On Ubuntu 15.04: Catalyst vs. RadeonSI Gallium3D
  4. Ubuntu 15.04 Offers Faster OpenGL For AMD Radeon GPUs On Open-Source
  5. Ubuntu 15.04 Brings Some Graphics Performance Improvements For Intel Haswell
  6. Sub-$20 802.11n USB WiFi Adapter That's Linux Friendly
Latest Linux News
  1. Libinput 0.15 Adds New Debug Events Utility
  2. Qt 5.5 Beta Is Coming Soon, Snapshot Released
  3. Steam Linux Usage Drops Below 1%
  4. Many OpenGL ES 3.1 Commits Land In Mesa
  5. HHVM 3.7 Brings More Performance Improvements
  6. Experimental DragonFlyBSD Code Adds Broadwell Graphics
  7. Virt-Manager 1.2.0 Brings OVMF/AAVMF Support For UEFI In VMs
  8. Interesting GSoC 2015 Projects: Wine D3DRM, GameStream, NaCL Fun
  9. An Ubuntu Phone Will Ship This Year With The Converged Unity Experience
  10. Ubuntu 15.10 Is Codenamed The Wily Werewolf
Most Viewed News This Week
  1. Trying Out Microsoft Visual Studio Code On Linux
  2. Microsoft Releases New Code IDE For Linux!
  3. Improvements On The Way For GNOME's Nautilus File Manager
  4. A Lot Of Improvements Are Coming For Mir 0.13, Including Work Towards Libinput
  5. Kodi 15.0 Beta 1 Released
  6. Mono 4.0 Makes Use Of Microsoft's Open-Source Code, C# 6.0
  7. Wayland 1.8 Alpha Release Delayed
  8. Lucid Sleep Support Is Being Worked On For The Upstream Linux Kernel