#15754: Move free variable computation to after STG passes -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 8.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #9718 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): Free-var info is inherently fragile, and is easily regenerated. It's a bit like `OccInfo` on a binder in `Core`. Best, I think, to generate it where needed, and explicitly nuke it in any pass that can't easily guarantee to preserve it. I suppose we could have a type index to specify whether or not the FV info was in there. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15754#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler