#9370: unfolding info as seen when building a module depends on flags in a previously-compiled module -------------------------------------+------------------------------------- Reporter: carter | Owner: richardfung Type: bug | Status: new Priority: high | Milestone: 8.2.1 Component: Compiler | Version: 7.8.3 Resolution: | Keywords: newcomer, | Inlining Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #8635 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): Matthew is right. * Part 1: the easiest thing is to set `Opt_IgnoreInterfacePragmas` to true ''only'' if you specify the flag `-fignore-interface-pragmas` explicitly, and ''not'' with `-O0`. Do that in `DynFlags`. That way an explicit `-fignore-interface-pragmas` flag will still work. * Part 2: with `O0` we want to switch off all inlining (except "compulsory" inlinings; see `InlineCompulsory` in CoreSyn). I think this can conveniently be done by setting `sm_inline = False` in the `SimplMode` in `SimplCore`. Set it in `base_mode`. So actually it looks fairly simple. Does that help? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9370#comment:28 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler