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

GCC 4.9 Compiler Optimization Benchmarks For Faster Binaries

Michael Larabel

Published on 14 April 2014
Written by Michael Larabel
Page 1 of 5 - 22 Comments

For those curious about the impact of modern compiler tuning CFLAGS/CXXFLAGS when using the GCC 4.9 compiler with an Intel Core i7 "Haswell" processor, here are many benchmarks of many C/C++ code-bases when testing a variety of compiler optimization levels and other flags.

For mostly reference purposes, this week I did a number of GCC 4.9 RC1 benchmarks on an Intel Core i7 4770K system running Ubuntu 14.04 LTS. The GCC optimization settings tested were:

-O0
-O1
-O2
-Os
-Og
-O3
-Ofast
-O3 -march=native
-O3 -march=native -flto

For those unfamiliar with these compiler controls, see GCC's optimize options documentation. Covered are all the basic optimization levels, targeting code generation for the Core i7 CPU, and also trying out link-time optimizations. I also tried using -fno-fat-lto-objects and -fuse-linker-plugin but those options caused the builds to fail.

A variety of C and C++ open-source benchmarks were run via the Phoronix Test Suite for this compiler benchmarking. The primary focus is on testing the performance of the generated binaries under each configuration but there's also a few timed compilation tests included.

<< Previous Page
1
Latest Linux Hardware Reviews
  1. AMD R600g/RadeonSI Performance On Linux 3.16 With Mesa 10.3-devel
  2. Intel Pentium G3258 On Linux
  3. SilverStone Precision PS10
  4. ASRock Z97 Extreme6
Latest Linux Articles
  1. Nouveau vs. Radeon vs. Intel Tests On Linux 3.16, Mesa 10.3-devel
  2. KVM Benchmarks On Ubuntu 14.10
  3. X.Org Server 1.16 Officially Released With Terrific Features
  4. Ubuntu With Linux 3.16 Smashes OS X 10.9.4 On The MacBook Air
Latest Linux News
  1. A New Video Has Us Real Excited About The New UT For Linux
  2. CoreOS Experiences Its First Stable Release
  3. GNOME 3.13.4 Continues Working On Wayland & More
  4. Wine 1.7.23 Has Initial Support For 64-bit Android Builds
  5. FreeBSD Developing A New Automounter, Other Features
  6. Guix 0.7 Can Now Install The GNU Operating System
  7. X.Org Foundation Still Works Towards Becoming An SPI Project
  8. Open-Source AMD Hawaii Support Should Now Be Working!
  9. KDE Developers Continue Working Toward Wayland Support
  10. Ubuntu 14.04.1 LTS Released
Latest Forum Discussions
  1. Updated and Optimized Ubuntu Free Graphics Drivers
  2. AMD "Hawaii" Open-Source GPU Acceleration Still Not Working Right
  3. Radeon related kernel bug??
  4. how the US intellegentia operates:
  5. AMD Publishes Open-Source Linux HSA Kernel Driver
  6. Next-Gen OpenGL To Be Announced Next Month
  7. Open-Source Radeon Performance Boosted By Linux 3.16
  8. Remote gui not accessible in Phoronix Test Suite 5.2