Comment #6 on issue 2873 by [email protected]: Compiled Lua VM slowness
http://code.google.com/p/v8/issues/detail?id=2873
I rebuilt the lua VM at http://kripken.github.io/lua.vm.js/lua.vm.js.html ,
looks like without LLVM LTO and with recent emscripten improvements, this
runs much faster on v8. Currently v8 is about 1.63x slower than firefox
(compared to 5.13x when this was originally filed), which is about 40% the
speed of a native build of the lua VM.
Not sure what made the difference, but the obvious change is that without
LTO, the compiled VM is much smaller (170K gzipped compared to 200K),
perhaps that is a factor. LLVM LTO seems to just hurt in this particular
codebase.
If you want an updated standalone build for here let me know and I can make
one.
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