Why did we choose AMD64 ?

AMD64 designates the 64-bit evolution of the Intel 32-bit x86 architecture. AMD completely switched to 64 bit quite before Intel. And amd64.s is the name of the x86-64bit architecture specific file in OCaml's source code.

• More registers available
• Inline memory allocation in assembly for better performance
• Deprecates the x86-32bit architecture anyway
• Probably the most widely available multicore CPU architecture, as new x86-32bit compatible CPUs are all 64bit capable