Try -XMonoLocalBinds in GHC for compile-time performance improvements
In #18360 (comment 284781) Simon said:
I think it might be interesting to compile GHC, or Cabal, with MonoLocalBinds on throughout, and see if there is any perf difference. Would anyone like to try that?
This was in the context of #18360, where (unnecessary) let generalisation led to failure to recognise a join point.
Edit: Implemented in !3650 (closed).