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

C++ Doesn't Change The Speed Of GCC

Compiler

Published on 22 March 2013 12:29 PM EDT
Written by Michael Larabel in Compiler
26 Comments

With GCC 4.8 using C++ as its implementation language of the compiler, some have questioned whether the compiler is as fast as when written in C. Here's some benchmarks showing C vs. C++ performance with GCC.

Google's Ian Taylor, a GCC expert, has claimed the C subset of C++ is just as far as the native C implementation. Meanwhile, Rusty Russell decided to question these claims so he ran his own tests when building GCC 4.7.2 in C and C++ modes. After building the GNU Compiler Collection both ways, he compared the performance of the resulting compilers when building the Linux kernel ten times.

The result? The C++ binary is slightly larger due to more debugging information, but the compile time is about the same. Rusty ended his blog post with "so whether you like C++ or not, the performance argument is moot."

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux Hardware Reviews
  1. AMD Launches New FX CPUs, Cuts Prices On Existing Processors
  2. Preview: AMD's FX-9590 Eight-Core At Up To 5.0GHz On Linux
  3. Intel Launches The Core i7 5960X, Mighty Powerful Haswell-E CPUs
  4. AMD Radeon R9 290: Gallium3D vs. Catalyst Drivers
Latest Linux Articles
  1. Ondemand vs. Performance CPU Governing For AMD FX CPUs On Linux 3.17
  2. How Intel Graphics On Linux Compare To Open-Source AMD/NVIDIA Drivers
  3. The Fastest NVIDIA GPUs For Open-Source Nouveau With Steam Linux Gaming
  4. Testing For The Latest Linux Kernel Power Regression
Latest Linux News
  1. webOS Lives On As LuneOS With New Release
  2. Marek Lands Radeon Gallium3D HyperZ Improvements
  3. Mozilla Firefox 32 Surfaces With HTML5, Developer Changes
  4. Nouveau X.Org Driver Released With DRI3+Present, Maxwell, GLAMOR
  5. Microsoft & AMD Release C++ AMP Compiler With Linux Support
  6. AMD, Wine & Valve Dominated August For Linux Users
  7. Linux 3.17-rc3 Kernel Released Back On Schedule
  8. Lennart Poettering Talks Up His New Linux Vision That Involves Btrfs
  9. Mesa 10.3 RC2 Arrives Via Its New Release Manager
  10. Ubuntu 14.10's Lack Of X.Org Server 1.16 Gets Blamed On AMD
Latest Forum Discussions
  1. Lennart Poettering Talks Up His New Linux Vision That Involves Btrfs
  2. AMD graphics doesn't work with AMD Catalyst drivers
  3. Best Radeon for a Power Mac G5?
  4. The dangers of Linux kernel development
  5. Updated and Optimized Ubuntu Free Graphics Drivers
  6. AMD Releases UVD Video Decode Support For R600 GPUs
  7. SSD seems slow
  8. Is laptop with Intel CPU and AMD dGPU worth buying considering especially AMD Enduro?