Better Integrate MIR dump in rustc_mir::util::liveness into the wider dump infrastructure

f1d0a2c
Opened by Christopher Vittal at 2023-04-05 17:41:29

Opening this so it doesn't get lost.

In the WG-compiler-nll gitter, @nikomatsakis mentioned that we should possibly update liveness.rs so that it uses the infrastructure from #45013.