Translation of machinecode into LLVM IR (disassembly / reassembly of X86_64. X86. ARM into LLVM bitcode)

mcsema is a production-quality binary lifter. It takes x86 and x86-64 and statically “lifts” it to LLVM IR. It’s actively maintained, BSD licensed, and has extensive tests and documentation.

https://github.com/trailofbits/mcsema