#8763: forM_ [1..N] does not get fused (10 times slower than go function) -------------------------------------+------------------------------------- Reporter: nh2 | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.2.1 Component: Compiler | Version: 7.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by akio): It looks like this is the same issue as described in #7206. The branch mentioned in https://ghc.haskell.org/trac/ghc/ticket/7206/#comment:13 fixes my test case. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8763#comment:29 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler