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-== Goal
-
-A memory-safe language with a simple translator to x86 that can be feasibly written in x86.
-
-== Definitions of terms
-
-Memory-safe: it should be impossible to:
-  a) create a pointer out of arbitrary data, or
-  b) to access heap memory after it's been freed.
-
-Simple: do all the work in a 2-pass translator:
-  Pass 1: check each instruction's types in isolation.
-  Pass 2: emit code for each instruction in isolation.
-
-== types
-
-int
-char
-(address _)
-(array _ n)
-(ref _)
-
-addresses can't be saved to stack or global,
-      or included in compound types
-      or used across a call (to eliminate possibility of free)
-
-<reg x> : (address T) <- advance <reg/mem> : (array T), <reg offset> : (index T)
-
-arrays require a size
-(ref array _) may not include a size
-
-== open questions
-Is argv an address?
-Global variables are easiest to map to addresses.
-Ideally we'd represent 'indirect' as a '*' and we could just count to make
-sure that an instruction never has more than one '*'.