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

LLVM/Clang 3.2 Compiler Competing With GCC

Michael Larabel

Published on 27 December 2012
Written by Michael Larabel
Page 2 of 5 - 20 Comments

Kicking things off with some molecular biology benchmarks, for HMMer the latest LLVM/Clang 3.2 release is still slower than GCC. GCC 4.8 wasn't any faster than GCC 4.7, but LLVM/Clang 3.2 is slightly slower still and wasn't improved between the 3.1 and 3.2 releases. (For the compiler flags noted, the -lm part can be ignored as for some cases LLVM/Clang 3.1 had problems with the -march=native mode on the Intel Ivy Bridge processor so the ordering was switched around.)

LLVM/Clang 3.2 is close behind the modern GCC releases tested on this Ivy Bridge processor.

For the new BLAKE2 crypto algorithm, the benchmark wouldn't build with LLVM/Clang 3.1 but it now works with LLVM/Clang 3.2. The Clang performance was shortly behind that of the GNU Compiler Collection.

LLVM/Clang secures a win when it comes down to the Monte Carlo test within SciMark. GCC 4.8 makes some performance gains over GCC 4.7 for this computational test, but LLVM/Clang 3.2 remains noticeably faster on the Intel processor.

There isn't much difference between LLVM/Clang and GCC for the Fast Fourier Transform workload.

Latest Linux Hardware Reviews
  1. MSI X99S SLI PLUS On Linux
  2. NVIDIA GeForce GTX 970 Offers Great Linux Performance
  3. CompuLab Intense-PC2: An Excellent, Fanless, Mini PC Powered By Intel's i7 Haswell
  4. From The Atom 330 To Haswell ULT: Intel Linux Performance Benchmarks
Latest Linux Articles
  1. RunAbove: A POWER8 Compute Cloud With Offerings Up To 176 Threads
  2. 6-Way Ubuntu 14.10 Linux Desktop Benchmarks
  3. Ubuntu 14.10 XMir System Compositor Benchmarks
  4. Btrfs RAID HDD Testing On Ubuntu Linux 14.10
Latest Linux News
  1. openSUSE Factory & Tumbleweed Are Merging
  2. More Fedora Delays: Fedora 21 Beta Slips
  3. Mono Brings C# To The Unreal Engine 4
  4. Coreboot Now Has Support For Intel Broadwell Hardware
  5. Enlightenment's EFL 1.12 Alpha Has Evas GL-DRM Engine, OpenGL ES 1.1 Support
  6. GTK+ Lands Experimental Backend For Mir Display Server
  7. Ubuntu 14.10 Officially Released
  8. Mesa 10.4 Might Re-Enable HyperZ For R600g/RadeonSI
  9. Intel GVT-g GPU Virtualization Moves Closer
  10. GTK+ 3.16 To Bring Several New Features
Latest Forum Discussions
  1. Updated and Optimized Ubuntu Free Graphics Drivers
  2. Ubuntu 16.04 Might Be The Distribution's Last 32-Bit Release
  3. Linux hacker compares Solaris kernel code:
  4. HOPE: The Ease Of Python With The Speed Of C++
  5. Advertisements On Phoronix
  6. Users/Developers Threatening Fork Of Debian GNU/Linux
  7. AMD Releases UVD Video Decode Support For R600 GPUs
  8. Proof that strlcpy is un-needed