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

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 Linux Hardware Reviews
  1. Scythe Mugen MAX
  2. Intel Core i7 5960X Haswell-E On Linux
  3. Intel 80GB 530 Series M.2 SSD On Linux
  4. With A New Motherboard, The Core i7 5960X Haswell-E Lights Up
Latest Linux Articles
  1. Intel P-State vs. CPUFreq Benchmarks On The i7-5960X
  2. RadeonSI GLAMOR Benchmarks With X.Org Server 1.16
  3. RadeonSI Gallium3D vs. Catalyst At 4K UHD On Linux
  4. MSAA RadeonSI Gallium3D Performance Preview
Latest Linux News
  1. X.Org Server Shatter Project Fails
  2. X.Org Women Outreach Program Only Turns Up Two Applicants So Far
  3. Fedora 21 Alpha Finally Coming Next Week
  4. Ubuntu Touch/Phone Reaches Its First RTM Image
  5. The KMS Mode-Setting Driver Was Imported For X.Org Server 1.17
  6. SNA & UXA Intel Benchmarks With X.Org Server 1.16
  7. Graphics Driver Changes Coming In The Linux 3.18 Kernel
  8. Tropico 5 Being Released For Linux Gamers This Week
  9. Eclipse IDE Starts Firing Up On Wayland's Weston
  10. OpenSUSE Announcement On SUSE's Recent Merger
Latest Forum Discussions
  1. New Group Calls For Boycotting Systemd
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. Stop grabbing my keyboard :(
  4. Best Radeon for a Power Mac G5?
  5. New stress testing utility for GPU's
  6. Hd 6850
  7. support for first generation UVD blocks (RV6xx, RS780, RS880 and RV790)
  8. Nvidia joins the ranks of Apple and Microsoft