#13353: foldr/nil rule not applied consistently -------------------------------------+------------------------------------- Reporter: nomeata | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 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): Wiki Page: | -------------------------------------+------------------------------------- Comment (by nomeata): I moved the `exprSize` idea to #13374.
I have no explanation for that!!
Might be a misunderstanding in how I use the GHC API. (It seems that the instance of `map` on the RHS of a rule has no rules in its `IdInfo`, and so it does not fire. I’ll ask on the mailing list about that once I get to it.)
Want to try adding that? [mapFB rule]
I’m trying that: Phab:D3275 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13353#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler