#11195: New pattern-match check can be non-performant -------------------------------------+------------------------------------- Reporter: goldfire | Owner: (none) Type: bug | Status: new Priority: high | Milestone: 8.4.1 Component: Compiler | Version: 7.11 Resolution: | Keywords: | PatternMatchWarnings Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1676, Wiki Page: | Phab:D1795 -------------------------------------+------------------------------------- Comment (by rwbarton): It's very strange. I also see `OptCoercion` taking several minutes and gobs of memory to compile, when I copy it somewhere and build it with `-package ghc`; but according to my logs from investigating join points it never takes particularly long to compile as part of the ghc build. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11195#comment:16 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler