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

Apple Implements LLVM JIT Back-End For WebKit JavaScript

Compiler

Published on 14 May 2014 12:46 AM EDT
Written by Michael Larabel in Compiler
13 Comments

For speeding up the JavaScript performance within upstream WebKit, Apple developers have implemented a new just-in-time (JIT) back-end that's based upon LLVM.

WebKit's newly-enabled JavaScript JIT support is based on LLVM. The new LLVM-based JIT compiler is called FTL, for the Fourth Tier LLVM. For right now this new high-performance JavaScript back-end is enabled for the Mac OS X and iOS versions of the open-source web-browser rendering engine.

Apple developers have been working on this LLVM FTL support for the past year and have now finally been able to turn it on. By basing it on LLVM, they are taking advantage of new optimization approaches previously not applicable to WebKit's JavaScript.

Early performance figures by Apple show the FTL JIT support being much faster than their earlier DFG JIT back-end along with other comparison pipelines. While these early results are good, developers still have more performance optimizations planned for the LLVM FTL JIT support.

This WebKit LLVM support was brought up Tuesday on the LLVM developers' list and you can learn a lot more in detail via the WebKit.org blog.

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. Btrfs RAID HDD Testing On Ubuntu Linux 14.10
  2. Ubuntu 14.10 Linux 32-bit vs. 64-bit Performance
  3. AMD Moves Forward With Unified Linux Driver Strategy, New Kernel Driver
  4. MSI: Update Your BIOS From The Linux Desktop
Latest Linux News
  1. Mesa 10.4 Tentatively Planned For Early December
  2. SteamOS Update 145 Brings Compositor, Update Fixes
  3. GStreamer 2014 Conference Videos Posted: Wayland, HTML5, 3D
  4. Nouveau Now Supports DRI3 Without GLAMOR
  5. Features Of The Linux 3.18 Kernel
  6. Debian Now Defaults To Xfce On Non-x86 Desktops
  7. Phoenix Is Trying To Be An Open Version Of Apple's Swift
  8. Linux 3.19 To Have Skylake Graphics, PPGTT Enablement
  9. Ubuntu 16.04 Might Be The Distribution's Last 32-Bit Release
  10. Imagination Releases Full ISA Documentation For PowerVR Rogue GPUs
Latest Forum Discussions
  1. Users/Developers Threatening Fork Of Debian GNU/Linux
  2. Ubuntu 16.04 Might Be The Distribution's Last 32-Bit Release
  3. AMD Releases UVD Video Decode Support For R600 GPUs
  4. HOPE: The Ease Of Python With The Speed Of C++
  5. Proof that strlcpy is un-needed
  6. xbox one tv tuner
  7. Bye bye BSD, Hello Linux: A Sys Admin's Story
  8. Updated and Optimized Ubuntu Free Graphics Drivers