Compute CFG

[willtebbutt]

The Core.Compiler.CFG object that IRCodes make use of ought to be trivial to compute from a BBCode. I'm trying this out to see if it actually is. It's quite helpful to have quick access to it, because there are some algorithms in Core.Compiler which do stuff with the CFG, e.g. compute the domtree.

[github-actions]

Performance Ratio:

┌────────────────────────────┬────────┬─────────┬─────────────┬─────────┐
│                      Label │  Tapir │  Zygote │ ReverseDiff │  Enzyme │
│                     String │ String │  String │      String │  String │
├────────────────────────────┼────────┼─────────┼─────────────┼─────────┤
│                        sum │   41.9 │   0.442 │        3.04 │   0.659 │
│                       _sum │   6.66 │   498.0 │        27.0 │   0.128 │
│                   kron_sum │   82.1 │    3.42 │       201.0 │    23.3 │
│              kron_view_sum │   96.2 │    11.5 │       251.0 │    8.35 │
│      naive_map_sin_cos_exp │   4.14 │ missing │         8.8 │    2.75 │
│            map_sin_cos_exp │   4.59 │    1.73 │        7.47 │     3.4 │
│      broadcast_sin_cos_exp │   3.85 │    2.26 │        1.45 │    2.47 │
│                 simple_mlp │   8.88 │    3.06 │        10.7 │    7.55 │
│                     gp_lml │   5.12 │    1.39 │     missing │ missing │
│ turing_broadcast_benchmark │   6.24 │ missing │        34.2 │ missing │
└────────────────────────────┴────────┴─────────┴─────────────┴─────────┘