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59 LuaJIT is a
<b>Just-In-Time Compiler
</b> for the Lua
<sup>*
</sup>
63 LuaJIT is Copyright
© 2005-
2011 Mike Pall.
64 LuaJIT is open source software, released under the
65 <a href=
"http://www.opensource.org/licenses/mit-license.php"><span class=
"ext">»</span> MIT license
</a>.
67 <p class=
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68 * Lua is a powerful, dynamic and light-weight programming language
69 designed for extending applications. Lua is also frequently used as a
70 general-purpose, stand-alone language. More information about
71 Lua can be found at:
<a href=
"http://www.lua.org/"><span class=
"ext">»</span> http://www.lua.org/
</a>
73 <h2>Compatibility
</h2>
75 LuaJIT implements the full set of language features defined by Lua
5.1.
76 The virtual machine (VM) is
<b>API- and ABI-compatible
</b> to the
77 standard Lua interpreter and can be deployed as a drop-in replacement.
80 LuaJIT offers more performance, at the expense of portability. It
81 currently runs on all popular operating systems based on
82 <b>x86
</b> or
<b>x64
</b> CPUs (Linux, Windows, OSX etc.) or embedded
83 systems based on
<b>ARM
</b> (Android, iOS) or
<b>PPC/e500v2
</b> CPUs.
84 Other platforms will be supported in the future, based on user demand
90 LuaJIT has been successfully used as a
<b>scripting middleware
</b> in
91 games,
3D modellers, numerical simulations, trading platforms and many
92 other specialty applications. It combines high flexibility with high
93 performance and an unmatched
<b>low memory footprint
</b>: less than
94 <b>125K
</b> for the VM plus less than
<b>85K
</b> for the JIT compiler (on x86).
97 LuaJIT has been in continuous development since
2005. It's widely
98 considered to be
<b>one of the fastest dynamic language
99 implementations
</b>. It has outperformed other dynamic languages on many
100 cross-language benchmarks since its first release
— often by a
101 substantial margin. In
2009 other dynamic language VMs started to catch up
102 with the performance of LuaJIT
1.x. Well, I couldn't let that slide. ;-)
105 2009 also marks the first release of the long-awaited
<b>LuaJIT
2.0</b>.
106 The whole VM has been rewritten from the ground up and relentlessly
107 optimized for performance. It combines a high-speed interpreter,
108 written in assembler, with a state-of-the-art JIT compiler.
111 An innovative
<b>trace compiler
</b> is integrated with advanced,
112 SSA-based optimizations and a highly tuned code generation backend. This
113 allows a substantial reduction of the overhead associated with dynamic
117 It's destined to break into the
<a href=
"http://luajit.org/performance.html"><span class=
"ext">»</span> performance
</a>
118 range traditionally reserved for offline, static language compilers.
123 Click on the LuaJIT sub-topics in the navigation bar to learn more
127 Click on the Logo in the upper left corner to visit
128 the LuaJIT project page on the web. All other links to online
129 resources are marked with a '
<span class=
"ext">»</span>'.
135 Copyright
© 2005-
2011 Mike Pall
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