ex 5.12 - plan
figure 5.12
ex 5.12 - insn without dup, sorted
ex 5.12 - entry point regs
ex 5.12 - saved or restored regs
ex 5.12 - q4 half way
ex 5.12 - collect sources
ex 5.12 - a map of sources
ex 5.12 - some comments
ex 5.12 - analyze and pretty print in two func
ex 5.12 - result pretty-printer
add "remove-duplicates" to utils
concatmap -> concat-map
ex 5.12 - split impl
legacy-easy - make-with won't start the machine
ex 5.12 - legacy done
simu - be able to build with execution
simu - reset-pc moved into part of exec
ex 5.12 - rearrange a little bit
ex 5.12 - simu - accessors