#15124: Improve block layout for the NCG -------------------------------------+------------------------------------- Reporter: AndreasK | Owner: AndreasK Type: task | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler (NCG) | Version: 8.2.2 Resolution: | Keywords: CodeGen Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #8082 #14672 | Differential Rev(s): Phab:D4726 Wiki Page: | -------------------------------------+------------------------------------- Changes (by AndreasK): * differential: => Phab:D4726 * related: #8082 => #8082 #14672 Comment: I've wrote up a patch implementing an experimental code layout algorithm, which hopefully is easy to adjust to take advantage of additional information about control flow. Code is at Phab:D4726. As it stands: * It works (only) on x64. * Performance is around the same. (Better but within the margin of error). * Compiler performance is slightly worse. There are a lot of knobs to tune this approach further but verifying any results is tedious so I stopped eventually. For now I hope to use this eventually as a substrate for the work on #14672. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15124#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler