13b167770c
Emergency stack slots are a new kind of stack slot added relatively recently. They need to be allocated a stack offset just like explicit and spill slots. Also, make StackSlotData's offset field an Option, to catch problems like this in the future. Previously the value 0 was used when offsets weren't assigned yet, however that made it non-obvious when the field meant "not assigned yet" and when it meant "assigned the value 0".
This crate contains the core Cretonne code generator. It translates code from an intermediate language into executable machine code.