#12626: Remove redundant type applications in Core -------------------------------------+------------------------------------- Reporter: nomeata | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by nomeata): How is this idea different from the System IF? * Conceptually, I am not trying to change core, but rather change the in- memory representation of Core. All the theory and reasoning about Core is untouched! Using a pattern synonym makes that very explicit. (Some operations, e.g. simple traversals, will be happy to work on the raw representation, but that’s just an optimization of the code). * System IF tries to handle one non-type-argument at a time, while my code always compresses a whole chain of arguments: ||=Core=||`(,) @Bool @Int True 1`||`(,) @Bool @Int True`|| ||=SystemIF=||`((,) True) 1`||`((,) True) @Int`|| ||=This idea=||`(,) [True, 1]`||`(,) [@Int, True]`|| -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12626#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler