Patterns emit useless bindings at the leaf node, only named wildcards and :as patterns should be emitted.

For smaller matches avoid backtracking actually greatly improves performance at the potential cost of code size. Perhaps we can devise a heuristic such that we employ the the best option available? Would need some serious hammock time.

`map-pattern-match-1` in the test cases tests the value for :b only in the first line, it backtracks and considers :a instead of looking the second value for :b first.

for example for:

(match [x]
  [{:a _ :b 2}] :a0
  [{:a 1 :b 1}] :a1)

The decision tree looks far too complicated.