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

Benchmarking LLVM/Clang 3.2, GCC 4.8, DragonEgg Compilers

Michael Larabel

Published on 9 November 2012
Written by Michael Larabel
Page 2 of 5 - 7 Comments

When starting with HMMer, GCC (both 4.7 and 4.8) are much faster than LLVM or even when using GCC with DragonEgg. It seems LLVM's optimizers are not as good as GCC's for this scientific benchmark. When DragonEgg was used while also enabling the GCC optimizers, the performance returned to nearly matching that of the vanilla GCC.

MrBayes was also the fastest with vanilla GCC over LLVM in any configuration -- Clang or DragonEgg. When attempting to use the GCC and LLVM optimizers with the extra compiler switch, the build failed.

LLVM finally comes out ahead when it comes to the KASUMI test within the Botan crypto library. LLVM with the Clang compiler front-end did the best while GCC with DragonEgg also was close with its performance and well ahead of a plain GNU Compiler Collection setup.

The other Botan crypto tests were mixed for who has the best compiler on the Intel Core i7 Linux setup.

Latest Articles & Reviews
  1. Ubuntu 15.04 Offers Faster OpenGL For AMD Radeon GPUs On Open-Source
  2. Ubuntu 15.04 Brings Some Graphics Performance Improvements For Intel Haswell
  3. Sub-$20 802.11n USB WiFi Adapter That's Linux Friendly
  4. The Lenovo T450s Is Working Beautifully With Linux
  5. Linux 4.0 SSD EXT4 / Btrfs / XFS / F2FS Benchmarks
  6. Linux 4.0 Hard Drive Comparison With Six File-Systems
Latest Linux News
  1. GCC 4.9.2 vs. GCC 5 Benchmarks On An Intel Xeon Haswell
  2. Intel Haswell/Broadwell Power Use On Linux Still Moving Lower
  3. QEMU 2.3 Officially Released
  4. It's Been Three Years Since The Big Steam Linux Reveal
  5. Debian-Based Distribution Updated With KDE 3.5 Forked Desktop
  6. Intel Is Making Some Progress With Compute Shaders
  7. Linux 4.1-rc1 Kernel Released, Packs In Several New Features
  8. It Doesn't Look Like KDBUS Will Make It For Linux 4.1
  9. Debian 9.0 Is Codenamed Stretch
  10. AMD Radeon GPUs With Linux 4.0 + Mesa 10.6-devel
Most Viewed News This Week
  1. AMD Releases New "AMDGPU" Linux Kernel Driver & Mesa Support
  2. Ubuntu's Desktop-Next Switching From .DEBs To Snappy
  3. Systemd Kills Off Shutdownd
  4. My Favorite Computer Desk Of The Past Decade For Less Than $100
  5. KDBUS Still Hasn't Been Pulled, Might Not Land For Linux 4.1
  6. AMD Open-Sources "Addrlib" From Catalyst
  7. Debian 8.0 Jessie Is Ready For Release This Weekend
  8. Qt Creator 3.4 Brings C++ Programming Improvements & More