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 Has More Optimizations

Compiler

Published on 14 November 2012 01:21 AM EST
Written by Michael Larabel in Compiler
4 Comments

The GCC 4.8 compiler when released in early 2013 will have a number of new optimizations.

GCC 4.8 features improvements to link-time optimizations (LTO) with the LTO partitioning having been re-written for improved reliability and maintainability while fixing some link failures (see our GCC 4.7 LTO benchmarks). Aside from improving LTO, there's also improved inter-procedural optimizations. The interprocedural optimization improvements come from a new symbol table, improvements to the inline heuristicsm and better inlining decisions.

GCC 4.8 has also addressed some scalability bottlenecks within GCC's optimization passes that will benefit extremely large functions. There's also a new -ftree-partial-pre option for controlling partial redundancy elimination (PRE) optimizations.

Last but not least there is a new general optimization level for fast compilation but with superior debugging capabilities and still reasonable run-time performance.

Other new features to version 4.8 of the GNU Compiler Collection are talked about in this article.

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. A Walkthrough Of The New 32 System Open-Source Linux Benchmarking Test Farm
  2. Habey MITX-6771: Mini-ITX Board With Quad-Core J1900 Bay Trail
  3. OCZ Vector 150 SSD On Linux
  4. Noctua i4 CPU Cooler: Great For Cooling High-End LGA-2011v3 CPUs
Latest Linux Articles
  1. AMD Kaveri: Open-Source Radeon Gallium3D vs. Catalyst 14.12 Omega Driver
  2. 12-Way AMD Catalyst 14.12 vs. NVIDIA 346 Series Linux GPU Comparison
  3. AMD Catalyst 14.12 Omega Driver Brings Mixed Results For Linux Users
  4. 6-Way Winter 2014 Linux Distribution Comparison
Latest Linux News
  1. LLVM 3.6 Will Be Branched Next Month
  2. Opera Browser Puts Out Linux Updates For The Holidays
  3. GNOME Shell 3.15.3 Adds Support For High-Contrast Themes
  4. Linux 3.19: ThinkPad Muting Redone, New Dell Backlight Support, Acer Is Banging
  5. KVM Drops Support For IA64 While Adding Various x86 Improvements
  6. GCC 4.8.4 Officially Released
  7. FSF's High Priority Project List Now Has A Committee
  8. Details On Using OpenACC & GPUs With GCC
  9. Ubuntu 15.04 Alpha 1 For Its Various Flavors
  10. Git 2.2.1 Released To Fix Critical Security Issue
Latest Forum Discussions
  1. XLennart: A Game For Systemd Haters With Nothing Better To Do
  2. The New SuperTuxKart Looks Better, But Can Cause GPU/Driver Problems
  3. Debian init discussion in Phoenix Wright format
  4. FPS capped on Linux (AMD fglrx drivers)
  5. Are there an app using HSA ?
  6. Bench specific mount point
  7. Tool for measuring FPS in games
  8. Need some hand holding with upgrading xserver