#13227: Loss of full laziness in mapFB -------------------------------------+------------------------------------- Reporter: simonpj | Owner: nomeata Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D3067 Wiki Page: | -------------------------------------+------------------------------------- Comment (by rwbarton): I can't quite tell from the discussion whether you are already aware of this, but just in case: The gains in Haddock performance from "Comments and tiny refactor only" (https://perf.haskell.org/ghc/#revision/fc9d152b058f21ab03986ea722d0c94688b99...) seem to be undoing the losses of "Improve the Occurrence Analyzer’s handling of one-shot functions" (https://perf.haskell.org/ghc/#revision/a1980ecb5626ec85fc14fbd217e2d16c7d50a...). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13227#comment:22 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler