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 4.8 Compiler - Is It Faster Yet?

Compiler

Published on 24 June 2012 02:13 PM EDT
Written by Michael Larabel in Compiler
Comment On This Article

GCC 4.7 was released a few months back, but have changes in the trunk code-base -- for what will eventually become GCC 4.8 -- resulted in any major performance changes yet?

GCC 4.8 will likely not be released until early 2013, but it's worth seeing if there's any performance changes early on in case the change is a regression or other issue. Plus GCC 4.8 will be competing with what will likely be LLVM/Clang 3.2 or LLVM/Clang 3.3.

The GCC 4.8 changes page at this point only mentions a new partial redundancy elimination (PRE) optimization and a new x86_64 option concerning stack alignment. The partial redundancy elimination optimization is exposed via the -ftree-partial-pre compiker switch or is also enabled at the -O3 optimization level where it's more aggressive. Many more changes and new features will be documented in the months leading up to the GCC 4.8.0 general availability.

GNU Compiler Collection 4.8 is also the release where developers hope to switch to C++ mode by default. We might also see the GNU D language compiler merged for this next release.

Anyhow, up today are just some simple benchmarks from the Intel Core i7 3770K "Ivy Bridge" system running some different Fortran/C/C++ tests while the CFLAGS/CXXFLAGS were set to "-O3 -march=native." The GCC 4.8.0 20120617 snapshot was compared to GCC 4.6.3 and GCC 4.7.1. Full details are available on OpenBenchmarking.org.

Continue exploring the results at OpenBenchmarking.org.

Latest Linux Hardware Reviews
  1. ASUS AM1I-A: A Mini-ITX Board For Socketed Kabini APUs
  2. Mini-Box M350: A Simple, Affordable Mini-ITX Case
  3. Overclocking The AMD AM1 Athlon & Sempron APUs
  4. AMD Athlon 5350 / 5150 & Sempron 3850 / 2650
Latest Linux Articles
  1. Ubuntu 12.04.4 vs. 13.10 vs. 14.04 LTS Desktop Benchmarks
  2. AMD OpenCL Performance With AM1 Kabini APUs
  3. A Quick Look At GCC 4.9 vs. LLVM Clang 3.5
  4. Are AMD Athlon/Sempron APUs Fast Enough For Steam On Linux?
Latest Linux News
  1. FreeBSD Advances For ARM, Bhyve, Clang
  2. Ubuntu 14.04 LTS "Trusty Tahr" Officially Released
  3. Ubuntu 12.04 LTS vs. 14.04 LTS Server Benchmarks
  4. QEMU 2.0 Released With ARM, x86 Enhancements
  5. Running The Unity 8 Preview Session On Ubuntu 14.04 LTS
  6. R600 Gallium3D Disables LLVM Back-End By Default
  7. Fedora 21 Gets GNOME 3.12, PHP 5.6, Mono 3.4
  8. Fedora Workstation Is Making Me Quite Excited
  9. Maynard: A Lightweight Wayland Desktop
  10. Chromium Browser Going Through Growing Pains In Ubuntu 14.04
  11. KDE 4.13 Is Being Released Today With New Features
  12. Trying Out Radeon R9 290 Graphics On Open-Source
Latest Forum Discussions
  1. The GNOME Foundation Is Running Short On Money
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. Radeon 8000M problematic on Linux?
  4. After Jack Keane, RuseSoft will briing Ankh 3 to Linux through Desura
  5. Suspected PHP Proxy Issue
  6. Linux Kernel Developers Fed Up With Ridiculous Bugs In Systemd
  7. Change installation destination from home directory
  8. Bye bye BSD, Hello Linux: A Sys Admin's Story