#14594: 2 modules / 2500LOC takes nearly 3 minutes to build -------------------------------------+------------------------------------- Reporter: schyler | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.2 Resolution: | Keywords: 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 bgamari): Indeed this program produces some moderately large Core. {{{ *** Desugar [GitHub.Data.Webhooks.Events]: Result size of Desugar (after optimization) = {terms: 18,603, types: 76,783, coercions: 21,668, joins: 0/547} *** Desugar [GitHub.Data.Webhooks.Payload]: Result size of Desugar (after optimization) = {terms: 26,920, types: 195,711, coercions: 41,708, joins: 1/937} }}} Nearly all of this is derived bindings. It would be interesting to study which classes are contributing the most. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14594#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler