#7258: Compiling DynFlags is jolly slow -------------------------------------+------------------------------------- Reporter: simonpj | Owner: simonpj Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.1 Resolution: | Keywords: deriving-perf Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by tdammers): Replying to [comment:70 alexbiehl]:
I tried the suggestion in comment [comment:67] and got these results for
compiling `W2.hs`
[...]
Good results I think. Though I need to check if allocation goes up
significantly in common cases. You could try running the examples in examples100.zip (https://ghc.haskell.org/trac/ghc/attachment/ticket/7258/examples100.zip) to see whether any of them performs worse, that would be a good first indication. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7258#comment:72 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler