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 3.4 SVN Compiler Optimization Level Tests

Michael Larabel

Published on 30 July 2013
Written by Michael Larabel
Page 1 of 4 - 1 Comment

To complement the LLVM 3.4 SVN compiler benchmarks from yesterday that were looking at the impact of using the SLP Vectorizer that's soon to be enabled by default for some optimization levels, here are some more LLVM Clang compiler development benchmarks. This time around are fresh benchmarks of the open-source C/C++ compiler when trying out the different compiler optimization levels, including -O0, -O1, -O2, -Os, -O3, and -Ofast.

From the LLVM, Clang, and Compiler-RT Subversion repositories as of this weekend, a fresh optimized build of LLVM/Clang 3.4 (no assertions, enable optimizations) was used for testing the -O0, -O1, -O2, -Os, -O3, and -Ofast optimization levels. Most Phoronix readers are well versed on the different optimization levels, but the higher the number, the more optimizations that are applied by the compiler. The -Os level is for optimizing the binary for size while -Ofast is the highest standard optimization level and relies upon the potentially unsafe fast-math.

These straightforward compiler benchmarks were done from a ThinkPad W510 laptop with Intel Core i7 720QM quad-core processor with Hyper Threading. Ubuntu 13.10 was running on the system with the Linux 3.11 kernel. All of the compiler benchmarks were done through the Phoronix Test Suite software.

Latest Articles & Reviews
  1. Samsung 850 EVO SSD Linux Benchmarks
  2. Kubuntu 15.04 Is Turning Out Quite Nice, Good Way To Try Out The Latest KDE
  3. 5-Way Linux Distribution Comparison On The Core i3 NUC
  4. OCZ ARC 100 Linux SSD Benchmarks
  5. Lenovo ThinkPad X1 Carbon Works Great As A Linux Ultrabook
  6. Transcend SSD370 256GB
Latest Linux News
  1. The Khronos Group Filed A Trademark On "Vulkan" API
  2. Mozilla Thunderbird Adoption Climbs, Thunderbird 38 In May
  3. The Most Popular Linux Benchmark Results On OpenBenchmarking.org
  4. Intel's Graphics Driver For Linux 4.1 Will Have More XenGT vGPU Support
  5. PlayOnLinux 4.2.6 Fixes A Number Of Issues
  6. Mesa 10.5-RC3 Now Available To Test Improved GPU Drivers
  7. New Specifications On The Alleged Ubuntu Tablet
  8. LLVM 3.6 Officially Released With Many Compiler Advantages
  9. VLC 2.2 "Weathermax" Brings Better VP9 & H.265 Support
  10. Open-Source .NET On Linux Continues Maturing
Most Viewed News This Week
  1. Linux 4.0-RC1 Tagged, Linux 4.0 Will Bring Many Notable Improvements
  2. Screenshots Of The GNOME 3.16 Changes
  3. More Proof That Allwinner Is Violating The GPL
  4. Linux 4.0 Doesn't Have The Weirdest Codename
  5. Mir Now Depends Upon C++14
  6. GNOME 3.16 Beta Brings Wayland-Based Log-in Screen
  7. Krita 2.9 Released, Their Biggest Release Ever
  8. The Tremendous Features Of Fedora 22

Close Advertisement

Close Advertisement