#15652: SerializedCompact has a [(Ptr a, Word)] instead of a custom datatype -------------------------------------+------------------------------------- Reporter: chessai | Owner: ezyang Type: bug | Status: new Priority: normal | Milestone: 8.8.1 Component: | Version: 8.4.3 libraries/compact | Keywords: ghc-compact, Resolution: | compact regions Operating System: Unknown/Multiple | Architecture: aarch64 Type of failure: Runtime | Test Case: performance bug | Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari): I don't think there's any deep reason for this; it was likely just the most convenient choice at the time the code was written. Ultimately it seems unlikely that there will typically be enough blocks that unpacking will have a significant change in performance characteristics. Is there a particular motivation for wanting unpacking here? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15652#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler