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

AMD R600 LLVM GPU Back-End Gets Better

AMD

Published on 15 February 2013 03:06 PM EST
Written by Michael Larabel in AMD
7 Comments

This week was marked by quite a steady patch flow of improvements to the AMD R600 GPU LLVM back-end that's used for Radeon Gallium3D OpenCL support and is also being bettered for its handling of OpenGL.

Among the patches that hit mesa-dev this week -- and there's also been some new patches already pulled into the LLVM code-base -- include:

- Initial scheduler code. "This is a skeleton for a pre-RA MachineInstr scheduler strategy. Currently it only tries to expose more parallelism for ALU instructions (this also makes the distribution of GPR channels more uniform and increases the chances of ALU instructions to be packed together in a single VLIW group). Also it tries to reduce clause switching by grouping instruction of the same kind (ALU/FETCH/CF) together."

- Support for 128-bit parameters.

- UBO support in the LLVM back-end for OpenGL Uniform Buffer Objects.

- Cleaned-up literal handling.

- TBO support a.k.a. OpenGL Texture Buffer Objects.

- Improved loop handling and various other R600 "structurizer" improvements.

There were also various other fixes and minor improvements to the R600 LLVM back-end. Earlier this month was when R600 LLVM indirect addressing support was finally introduced.

For more information on using the open-source Radeon OpenCL stack with Gallium3D, read Running OpenCL On The GPU With Gallium3D.

New benchmarks of the R600 LLVM back-end are forthcoming but until then are my R600 Gallium3D LLVM benchmarks from last year. Since then many improvements have been made.

This LLVM Radeon GPU back-end will officially introduced in LLVM 3.3 when released later this year.

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. A Walkthrough Of The New 32 System Open-Source Linux Benchmarking Test Farm
  2. Habey MITX-6771: Mini-ITX Board With Quad-Core J1900 Bay Trail
  3. OCZ Vector 150 SSD On Linux
  4. Noctua i4 CPU Cooler: Great For Cooling High-End LGA-2011v3 CPUs
Latest Linux Articles
  1. AMD Kaveri: Open-Source Radeon Gallium3D vs. Catalyst 14.12 Omega Driver
  2. 12-Way AMD Catalyst 14.12 vs. NVIDIA 346 Series Linux GPU Comparison
  3. AMD Catalyst 14.12 Omega Driver Brings Mixed Results For Linux Users
  4. 6-Way Winter 2014 Linux Distribution Comparison
Latest Linux News
  1. Jolla's Sailfish OS Update 10 Is Now Available
  2. HP To Launch Linux++ Operating System Next Year
  3. Civilization: Beyond Earth Launches For Linux
  4. NIR Has Been Revised As A New IR For Mesa
  5. New 64-bit Linux Kernel Vulnerabilities Disclosed This Week
  6. PostgreSQL 9.4 Brings JSONB & Many Other New Features
  7. That Nasty Linux Kernel Lockup Bug Is Still Unresolved
  8. KDE's Krita Loses Its Main Backer
  9. Inline Data Support Comes To CephFS With Linux 3.19
  10. VC4 Gallium3D Adds DMA-BUF Support, Yields Working DRI3
Latest Forum Discussions
  1. Bench specific mount point
  2. XLennart: A Game For Systemd Haters With Nothing Better To Do
  3. Tool for measuring FPS in games
  4. Need some hand holding with upgrading xserver
  5. Ubuntu Developers Still Thinking What To Do About Adobe Flash Support
  6. Microsoft buying Mojang
  7. Updated and Optimized Ubuntu Free Graphics Drivers
  8. Premium subscription "login" times out much faster than forum