#13426: compile-time memory-usage regression for DynFlags between GHC 8.0 and GHC 8.2 -------------------------------------+------------------------------------- Reporter: hvr | Owner: dfeuer Type: bug | Status: new Priority: high | Milestone: 8.4.1 Component: Compiler | Version: 8.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D3399, Wiki Page: | Phab:D3400, Phab:D3421 -------------------------------------+------------------------------------- Comment (by dfeuer): If I remove the size calculation altogether, allowing unlimited simplifier ticks, then we get performance regressions. This suggests that some of the leaks are still with us, although apparently not nearly as severe as they once were. I'm working on making the size calculation a bit more efficient, but we're going to leave the rest alone for now. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13426#comment:47 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler