#7647: UNPACK polymorphic fields -------------------------------------+------------------------------------- Reporter: liyang | Owner: Type: feature request | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #3990 | Differential Revisions: -------------------------------------+------------------------------------- Changes (by thomie): * cc: MikeIzbicki (added) * related: 3990 => #3990 Comment: See this [https://izbicki.me/blog/fast-nearest-neighbor-queries-in- haskell.html blog post] for a request for "polymorphic unpacking", in the section "Lesson 1: Polymorphic code in GHC is slower than it needs to be." The blog post also refers to a [https://www.reddit.com/r/haskell/comments/29onpf/why_does_ghc_always_box_pol... reddit discussion] on the subject. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7647#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler