#8638: Optimize by demoting "denormalized" Integers (i.e. J# -> S#) --------------------------------------------+------------------------------ Reporter: hvr | Owner: hvr Type: feature request | Status: infoneeded Priority: normal | Milestone: 7.8.1 Component: libraries (other) | Version: 7.7 Resolution: | Keywords: integer- Operating System: Unknown/Multiple | gmp Type of failure: Runtime performance bug | Architecture: Test Case: | Unknown/Multiple Blocking: | Difficulty: Unknown | Blocked By: | Related Tickets: --------------------------------------------+------------------------------ Changes (by simonpj): * status: patch => infoneeded Comment: Interesting. In general it seems like a good idea. Although making the test has a cost, if you get a win, it's a big win. I'd first like to know why `mandel` started allocating nearly 50% more store. (I use `-ticky` for answering this kind of question.) Maybe investigating that will show how the patch can be improved further. Simon -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8638#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler