#9617: Try to replace `quot` and `rem` with `quotRem` when possible -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: Type: feature | Status: new request | Milestone: Priority: normal | Version: 7.9 Component: Compiler | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by dfeuer): I think the dead code elimination is probably pretty simple here. If we see {{{#!hs case quotRemInt# x y of _ { (# q, r #) -> expr } }}} and either `q` or `r` is not free in `expr`, replace that with {{{#!hs case quotInt# x y of _ { q -> expr } }}} or the other way around. I don't know where code to do such a thing would belong, however. It certainly would have to be post-CSE. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9617#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler