#9542: GHC-IO-Handle-Text.hPutStr' and writeBlocks look like they need refactoring -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: Type: task | Status: new Priority: normal | Milestone: Component: | Version: 7.8.2 libraries/base | Keywords: fusion, Resolution: | refactoring Operating System: | Architecture: Unknown/Multiple Unknown/Multiple | Difficulty: Unknown Type of failure: | Blocked By: None/Unknown | Related Tickets: Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by dfeuer): * keywords: => fusion, refactoring Comment: Indeed, `writeBlocks` ''can'' be written as a `foldM` form, which can fuse, at least in theory. It may, however, be a challenge to bend arity analysis to my will without inlining more than we should. This may or may not be compounded by the fact that in tearing apart `writeBlocks` I realized that there's a special case buried within: block buffering with normal (non-Windows) end-of-line conventions never actually needs to examine the characters it handles. I would venture to guess that we could exploit that fact to improve efficiency. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9542#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler