#8405: experiment with using function-sections for linking (for smaller libs and executables) -------------------------------------+------------------------------------- Reporter: carter | Owner: olsner Type: task | Status: new Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: 7.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1242 -------------------------------------+------------------------------------- Comment (by Ben Gamari <ben@…>): In [changeset:"4a32bf925b8aba7885d9c745769fe84a10979a53/ghc" 4a32bf9/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="4a32bf925b8aba7885d9c745769fe84a10979a53" Implement function-sections for Haskell code, #8405 This adds a flag -split-sections that does similar things to -split-objs, but using sections in single object files instead of relying on the Satanic Splitter and other abominations. This is very similar to the GCC flags -ffunction-sections and -fdata-sections. The --gc-sections linker flag, which allows unused sections to actually be removed, is added to all link commands (if the linker supports it) so that space savings from having base compiled with sections can be realized. Supported both in LLVM and the native code-gen, in theory for all architectures, but really tested on x86 only. In the GHC build, a new SplitSections variable enables -split-sections for relevant parts of the build. Test Plan: validate with both settings of SplitSections Reviewers: dterei, Phyx, austin, simonmar, thomie, bgamari Reviewed By: simonmar, thomie, bgamari Subscribers: hsyl20, erikd, kgardas, thomie Differential Revision: https://phabricator.haskell.org/D1242 GHC Trac Issues: #8405 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8405#comment:16> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler