#12893: Profiling defeats stream fusion when using vector library -------------------------------------+------------------------------------- Reporter: newhoggy | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: stream-fusion | profiling Operating System: MacOS X | Architecture: x86_64 Type of failure: Runtime | (amd64) performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari): However, do keep in mind that profiling isn't an all-or-nothing proposition. If you would like to use the profiler it is still possible to (with care) manually insert cost-centers or even enable automatic cost- center insertion for entire (non-performance critical) modules by using the `OPTIONS_GHC` pragma. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12893#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler