codegen tracking issue

[felixangell]

for the llvm backend

• [ ] else if
• [x] for loop
• [x] infinite loop
• [x] if statement
• [x] while loops
• [ ] defer (handled in ir?)
• [ ] global variables
• [x] local variables
• [x] variable access
• [x] variable re-assignment
• [ ] next
• [x] return?
• [ ] eval block/yield
• [ ] floating point types
• [x] address of
• [x] arithmetic
  • [x] signed
  • [ ] unsigned
• [x] modulo operator
• [x] division op
• [x] add and sub
• [x] shift left/right
• [x] bitwise and, or, xor, not
• [ ] type casting
• [ ] anonymous functions
• [ ] match
• [ ] structure types
  • [x] structure type default values
  • [ ] packed attribute
• [x] array types
• [ ] tagged union
• [ ] enums
• [ ] type promotion?
• [x] pointers
• [x] address of
• [ ] methods?
• [ ] path expressions
• [ ] slices?
• [ ] tuples
• [x] structure field access
• [ ] boolean operators
• [ ]