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EmScripten Merges Its Speedy "Fastcomp" Backend

Compiler

Published on 21 April 2014 08:54 AM EDT
Written by Michael Larabel in Compiler
4 Comments

EmScripten, the innovative project for turning C++ code into JavaScript that can be run within web-browsers, has merged its brand new LLVM compiler back-end that is faster and also yields other benefits.

Fastcomp is the name of EmScripten's new LLVM C++ back-end. Fastcomp lives outside of the LLVM tree (along with some other EmScripten-designed LLVM patches) but aims to provide noticeable benefits over its original compiler back-end.

The new Fastcomp compiler core/back-end is more streamlined, tuned around producing ASM.js code, is much faster (around four times faster), uses less system memory, and has other improvements too. The JavaScript generated by Fastcomp is also slated to be better than its original compiler core. The downside to this work though is that this LLVM code is out-of-tree and doesn't work with a stock build of LLVM for right now.

More details on this new EmScripten code for turning C++ into JavaScript for the web can be found via the EmScripten mailing list and extensive information about Fastcomp can be found via the EmScripten Wiki.

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 .
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