#8279: bad alignment in code gen yields substantial perf issue -------------------------------------+------------------------------------- Reporter: carter | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.7 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #8082 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by George): re Simon PJ's and Simon Mar's comment , we don't quite know that that better alignment would improve speed at the cost of binary size , but the Intel documentation is a pretty strong hint that it proably will and is thus worth checking out, right? Couldn't we break this into two tasks: First to provide a patch with instructions on how to apply it e.g. to 8.6.1 or head or whatever and a task to benchmark the resulting compiler. The benchmarking task could be done by people with much less, or at leasts different, expertise than it takes to produce such a patch right? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8279#comment:29 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler