20160704 - Relative Addressing With XOR - Removing an Adder
Could be an interesting compromise: use XOR instead of ADD for relative addressing to remove an adder. Specifically,
Address = AddressRegister XOR Immediate
Forces the programmer to keep address register on some power of two alignment.
With caches and/or parallel access to banked memory, this would be a bad.
But likely fine for a core with a private memory, and code written in assembly.