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

DragonEgg 3.0 Puts GCC & LLVM In One Bed

Michael Larabel

Published on 5 December 2011
Written by Michael Larabel
Page 3 of 5 - 11 Comments

With running the popular multi-threaded C-Ray ray-tracing benchmark, when LLVM 3.0 was touching the code it always ended up being faster. LLVM/Clang 3.0 was slightly faster than GCC 4.6.2 while using DragonEgg pushed it even faster. The best performance was with DragonEgg 3.0 and the option of both the GCC/LLVM optimizers; this led to a 14% performance improvement over vanilla GCC 4.6.2.

The single-threaded POV-Ray benchmark with its stock compiler flags was also much faster when taking advantage of the LLVM technologies than vanilla GCC. LLVM/Clang 3.0 was 17% faster than GCC for this Intel Gulftown platform while the DragonEgg plug-in pushed up the performance even more. However, when using DragonEgg with the "-fplugin-arg-dragonegg-enable-gcc-optzns" option for maximum performance, the test failed.

Clang still struggles with the Smallpt test due to the compiler front-end lacking OpenMP support. Between GCC and GCC with DragonEgg, there was not much of a performance difference.

Latest Linux Hardware Reviews
  1. Even With Re-Clocking, Nouveau Remains Behind NVIDIA's Proprietary Linux Driver
  2. The Power Consumption & Efficiency Of Open-Source GPU Drivers
  3. AMD R600g/RadeonSI Performance On Linux 3.16 With Mesa 10.3-devel
  4. Intel Pentium G3258 On Linux
Latest Linux Articles
  1. Updated Source Engine Benchmarks On The Latest AMD/NVIDIA Linux Drivers
  2. Nouveau vs. Radeon vs. Intel Tests On Linux 3.16, Mesa 10.3-devel
  3. KVM Benchmarks On Ubuntu 14.10
  4. X.Org Server 1.16 Officially Released With Terrific Features
Latest Linux News
  1. GStreamer VA-API Plug-In Update Adds New Features
  2. Qt 5.4 Going Into Feature Freeze Next Week With Exciting Changes
  3. OpenSUSE Factory Turns Into Rolling Release Distribution
  4. "The World's Most Highly-Assured OS" Kernel Open-Sourced
  5. NVIDIA Is Working Towards VDPAU H.265/HEVC Support
  6. Hawaii Bug-Fixes Start Hitting Mainline RadeonSI Gallium3D
  7. The FFmpeg vs. Libav War Continues In Debian Land
  8. Grand Theft Auto Running On Direct3D Natively On Linux Shows Gallium3D Potential
  9. GCC As A Just-In Time Compiler Is An Interesting Project
  10. Age Of Wonders III Is Still Being Ported To Linux
Latest Forum Discussions
  1. Linus Torvalds On GCC 4.9: Pure & Utter Crap
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. Debian + radeonsi
  4. Open-source drivers on ATI R7 260X
  5. List of Linux friendly Kickstarter projects
  6. Porting Mesa to the Playstation 2
  7. ASRock AM1H-ITX: One Of The Best AM1 Mini-ITX Motherboards
  8. Table test