#15821: Implement constant folding for Naturals -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: task | Status: new Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 8.6.1 Keywords: newcomer | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- #14465 has already gone a long way in improving the runtime performance of `Natural` numbers. However, we still lack constant folding for these numbers so there is money left on the table. To fix this you will want to implement rules similar to those for `Integer` in the `PrelRules` module. Additionally, you will need to comment back in the `CONSTANT_FOLDED` pragmas in `GHC.Natural` (see Phab:D5267) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15821 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler