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 3.4 Compiler Officially Released With Many Features

Compiler

Published on 06 January 2014 11:15 AM EST
Written by Michael Larabel in Compiler
3 Comments

It's nearly one month late but the LLVM 3.4 compiler infrastructure is now available with the updated Clang C/C++ compiler front-end, the usual LLVM sub-projects, and also some new compiler tools.

At Phoronix I've already written dozens of articles on LLVM 3.4, including last month's feature overview. Some of the major features to this six-month update for LLVM 3.4 includes enabling the AMD GPU back-end by default for use with the open-source AMD Linux graphics driver, a new Clang-Format utility for auto-formatting code, a Microsoft Visual Studio driver, the loop vectorizer is now used more broadly at more optimization levels, the SLP straight-line vectorizer is turned on by default, there's support for the MIPS SIMD architecture, experimental SPARC V9 support, and many other features.

About the code generation performance, Chris Lattner's 3.4 release announcement additionally mentions, "In the code generator, overall performance is greatly increased. Notably, the loop auto-vectorizer is now enabled at -Os and -O2 in addition to -O3. The SLP auto-vectorizer is now enabled by default as well. Many targets have made major leaps, but the R600 target is now built by default (instead of experimental), the PowerPC backend has made several major improvements to code generation quality and compile time, and the X86, SPARC, ARM32, Aarch64 and SystemZ backends have all seen major feature work."

Other changes for the LLVM 3.4 compiler release can be found via the release notes hosted at LLVM.org.

On Phoronix the LLVM/Clang 3.4 compiler code has been benchmarked on multiple occasions. The most recent tests showed Clang 3.4 performing very well against GCC 4.9 and the overall compiler performance doing well. Now that LLVM 3.4 has been officially christened there will be a fresh round of stable compiler tests on multiple systems as well as new benchmarks of the AMD GPU LLVM back-end.

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. NVIDIA GeForce GTX 970 Offers Great Linux Performance
  2. CompuLab Intense-PC2: An Excellent, Fanless, Mini PC Powered By Intel's i7 Haswell
  3. From The Atom 330 To Haswell ULT: Intel Linux Performance Benchmarks
  4. AMD Radeon R9 285 Tonga Performance On Linux
Latest Linux Articles
  1. 6-Way Ubuntu 14.10 Linux Desktop Benchmarks
  2. Ubuntu 14.10 XMir System Compositor Benchmarks
  3. Btrfs RAID HDD Testing On Ubuntu Linux 14.10
  4. Ubuntu 14.10 Linux 32-bit vs. 64-bit Performance
Latest Linux News
  1. Mono Brings C# To The Unreal Engine 4
  2. Coreboot Now Has Support For Intel Broadwell Hardware
  3. Enlightenment's EFL 1.12 Alpha Has Evas GL-DRM Engine, OpenGL ES 1.1 Support
  4. GTK+ Lands Experimental Backend For Mir Display Server
  5. Ubuntu 14.10 Officially Released
  6. Mesa 10.4 Might Re-Enable HyperZ For R600g/RadeonSI
  7. Intel GVT-g GPU Virtualization Moves Closer
  8. GTK+ 3.16 To Bring Several New Features
  9. Debian 8.0 Jessie Has Many Multimedia Improvements
  10. What Linux Benchmarks Would You Like To See Next?
Latest Forum Discussions
  1. HOPE: The Ease Of Python With The Speed Of C++
  2. Linux hacker compares Solaris kernel code:
  3. Advertisements On Phoronix
  4. Updated and Optimized Ubuntu Free Graphics Drivers
  5. Users/Developers Threatening Fork Of Debian GNU/Linux
  6. Ubuntu 16.04 Might Be The Distribution's Last 32-Bit Release
  7. AMD Releases UVD Video Decode Support For R600 GPUs
  8. Proof that strlcpy is un-needed