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. Trying The Configurable 45 Watt TDP With AMD's A10-7800 / A6-7400K
  2. Sumo's Omni Gets Reloaded
  3. AMD A10-7800 & A6-7400K APUs Run Great On Linux
  4. Radeon Gallium3D Is Running Increasingly Well Against AMD's Catalyst Driver
Latest Linux Articles
  1. Intel's Latest Linux Graphics Code Competes Against OS X 10.9
  2. Intel Sandy Bridge Gets A Surprise Boost From Linux 3.17
  3. Open-Source Radeon Graphics Have Some Improvements On Linux 3.17
  4. CPUFreq Scaling Tests With AMD's Kaveri On Linux 3.16
Latest Linux News
  1. Mesa 10.3 Branched & RC1 Released, Mesa 10.4 On Master
  2. Intel Sandy Bridge Gains On Linux 3.17 Extend Beyond Graphics
  3. LinuxCon: What's Going On With Fedora.Next
  4. Canonical Joined The Khronos Group To Help Mir/Wayland Drivers
  5. EFL 1.11 Is A Big Milestone For Enlightenment Users
  6. DirectFB Updates GTK3 Support, Working Towards DirectFB 1.8
  7. Userptr Support Set For AMD Radeon GPUs In Linux 3.18
  8. NVIDIA Releases CUDA 6.5 As A Huge Update
  9. GNOME 3.14 Beta Makes GLSL Optional, Supports Wayland Gesture/Touch Events
  10. The Many Things You Can Build With A Raspberry Pi
Latest Forum Discussions
  1. AMD Offers Mantle For OpenGL-Next, Pushes Mantle To Workstations
  2. Systemd 216 Piles On More Features, Aims For New User-Space VT
  3. ATI CrossFire Does Not Support On This Platform When Enabling (Ubuntu Lucid)
  4. Dead Island for Linux (?)
  5. The dangers of Linux kernel development
  6. Remote gui not accessible in Phoronix Test Suite 5.2
  7. Updated and Optimized Ubuntu Free Graphics Drivers
  8. Next-Gen OpenGL To Be Announced Next Month