#15263: Fuse zipWith3 -------------------------------------+------------------------------------- Reporter: goldfire | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.4.3 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: | -------------------------------------+------------------------------------- Comment (by mpickering): If you are going to do that, you might as well define `zipWith3` in that way to begin with? In fact, defining `zipWith3` in this way and adding an `INLINE` pragma causes it to fuse nicely with map. My example program and the resulting core here - https://gist.github.com/mpickering/c190fc25260a3460f4633d0248659192 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15263#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler