#14626: No need to enter a scrutinised value -------------------------------------+------------------------------------- Reporter: heisenbug | Owner: heisenbug Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.2 Resolution: | Keywords: performance Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #13861 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by heisenbug): @simonpj, thanks this is a good start. When restricting myself to `wild*` vars, I already get a nice performance diff on dynamic instruction counts: https://perf.haskell.org/ghc/#compare/7a25659efc4d22086a9e75dc90e3701c1706c6... Then I tried to add `ds*` variables too, and (some of) those made the stage-2 crash. It is checked in on the branch if you want to have a try... https://github.com/ghc/ghc/commit/b30d61f64772d744e06e2acbab21895cb20d9bf7 Any hints appreciated! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14626#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler