#2159: Use a more efficient representation than [DynFlag] -------------------------------------+------------------------------------- Reporter: igloo | Owner: Type: bug | Status: closed Priority: lowest | Milestone: Component: Compiler | Version: 6.8.2 Resolution: fixed | 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 rwbarton): Well the bit array was 4x faster than IntSet in my unscientific test. And it would probably be a bit faster still when the option to test is known and can be inlined. But there could be little left to gain after the switch to IntSet. A pretty easy experiment to do, if we had an easy way to benchmark compiler performance... -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/2159#comment:22 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler