Re:The Elusive Universal Web Bytecode
by sp332 on Thursday March 26, 2015 @01:47PM
(#9271631)
They distribute Rust as Rust code, not as LLVM IR. You use LLVM to compile Rust to a target-specific IR and then to a target-specific binary. Try reading that link your sibling posted.
It might not compile on an AT-MEGA, but it seems portable enough for the purposes of acting as a browser bytecode representation.