#14936: GHC 8.4 performance regressions when using newtypes -------------------------------------+------------------------------------- Reporter: danilo2 | Owner: (none) Type: bug | Status: new Priority: highest | Milestone: 8.4.2 Component: Compiler | Version: 8.4.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by RyanGlScott): * cc: simonpj (added) * milestone: => 8.4.2 Comment: This regression was introduced in commit fb050a330ad202c1eb43038dc18cca2a5be26f4a (`Do not bind coercion variables in SpecConstr rules`). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14936#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler