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

Future Work On The AMD GPU LLVM Back-End

AMD

Published on 15 November 2013 11:45 AM EST
Written by Michael Larabel in AMD
3 Comments

Earlier this month there was a presentation by AMD's Tom Stellard at the LLVM Developers' Meeting about the work being done on the Radeon GPU LLVM back-end.

The presentation was entitled "A Detailed Look at the R600 Backend" and was a low-level look at this LLVM back-end for generating Radeon-specific ISA out of GLSL and OpenCL code. A majority of the presentation isn't of interest to most Phoronix readers as it's a low-level look at the back-end and the intended audience was compiler developers. The slides/video recording aren't yet available but Tom Stellard sent over his slide-deck this morning so here's a few tid-bits from the presentation.

Future Work On The AMD GPU LLVM Back-End


As far as why AMD went with an LLVM back-end for their graphics driver was said to be for a reduction in development time and better testing coverage.

Future Work On The AMD GPU LLVM Back-End


Future work to be done includes support for new hardware, full support for GPU programming languages (namely GL Shading Language and OpenCL C), work out other ideas, and have more GPU back-ends within LLVM. The other ideas included working on an LLVM MachineScheduler for AMD's "GCN" hardware, common intrinsics for GLSL (potentially with LunarGLASS), an LLVM SelectionDAG replacement, back-end error reporting support, and performance improvements.

For those not paying attention to other Phoronix articles, there's been a lot of work lately on R600 LLVM. With LLVM 3.4 it should be in fairly good shape for Radeon HD 7000 series GPUs, there's now GL3 GLSL support with the LLVM back-end, some basic OpenCL workloads like bit-coin mining and Pyrit are starting to run, etc. LLVM 3.4 with Mesa 10.0 should make open-source Radeon OpenCL support okay in a primitive form for early adopters while Fedora 21 should have great OpenCL support.

Stay tuned for more coverage when the rest of the slides and video recordings are available from this month's LLVM Developers' Meeting.

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. Trying Out The Modern Linux Desktops With 4 Monitors + AMD/NVIDIA Graphics
  2. Turning A Basement Into A Big Linux Server Room
  3. NVIDIA's $1000+ GeForce GTX TITAN X Delivers Maximum Linux Performance
  4. OS X 10.10 vs. Ubuntu 15.04 vs. Fedora 21 Tests: Linux Sweeps The Board
  5. The New Place Where Linux Code Is Constantly Being Benchmarked
  6. 18-GPU NVIDIA/AMD Linux Comparison Of BioShock: Infinite
Latest Linux News
  1. PulseAudio 7.0 To Enable LFE Remixing By Default
  2. Features & Changes Coming For Mir 0.13
  3. How Far Valve Has Come: Three Years Ago They Needed OpenGL Linux Help
  4. Audacity 2.1 Improves Noise Reduction, Adds Real-Time Effects Preview
  5. Linux 4.0-rc6 Kernel Released
  6. Automatically Managing The Linux Benchmarks Firing Constantly
  7. The Big Features Of The Linux 4.0 Kernel
  8. Mesa's Android Support Is Currently In Bad Shape
  9. Wayland's Weston Terminal Can Now Be Minimized
  10. Phoronix - Working Towards Faster Page Loads
Most Viewed News This Week
  1. Introducing The Library Operating System For Linux
  2. Allwinner Continues Jerking Around The Open-Source Community
  3. Open-Source Driver Fans Will Love NVIDIA's New OpenGL Demo
  4. Systemd Change Allows For Stateless Systems With Tmpfs
  5. GNOME 3.16 Released: It's Their Best Release Yet
  6. GNOME Shell & Mutter 3.16.0 Released
  7. GNU Nano 2.4.0 Brings Complete Undo System, Linter Support & More
  8. Red Hat Is Rolling Out A VirtIO DRM/KMS GPU Driver