I wonder: What else (besides the code-generator) uses the used-once information in a critical way? In particular, `isUsedOnce` is *only* mentioned in `CoreToStg`. Should we even bother removing the information
#11731: Simplifier: Inlining trivial let can lose sharing -------------------------------------+------------------------------------- Reporter: nomeata | Owner: Type: bug | Status: patch Priority: normal | Milestone: Component: Compiler | Version: 8.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D2064 Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): then? I think nothing. And that's why I said it's optional to erase it. It's just a little smelly to have info in the tree that is wrong. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11731#comment:33 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler