#13426: compile-time memory-usage regression for DynFlags between GHC 8.0 and GHC 8.2 -------------------------------------+------------------------------------- Reporter: hvr | Owner: rwbarton Type: bug | Status: new Priority: high | Milestone: 8.2.1 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 -------------------------------------+------------------------------------- Comment (by Simon Peyton Jones <simonpj@…>): In [changeset:"29645274a3c97a904759aa245dc8f8c03a58c601/ghc" 2964527/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="29645274a3c97a904759aa245dc8f8c03a58c601" Refactor simplExpr (Type ty) This small refactoring, provoked by comment:18 on Trac #13426, makes it so that simplExprF never gets a (Type ty) expression to simplify, which in turn means that calls to exprType on its argument will always succeed. No change in behaviour. }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13426#comment:20> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler