#9251: ghc does not expose branchless max/min operations as primops -------------------------------------+------------------------------------- Reporter: carter | Owner: osa1 Type: task | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.2 Resolution: | Keywords: newcomer Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #9246 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by AndreasK): * cc: AndreasK (added) Comment: For cases where branch prediction is impossible this makes quite the difference in my experience. I have some proof of concept code for Int/Word already. I plan to keep the branch [here](https://github.com/AndreasPK/ghc/tree/minmax) updated until I got a patch ready. If someone feels like taking this over contact me, otherwise I will probably put up a patch for the Int/Word in a month or two depending on how time I can spend on this. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9251#comment:26 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler