#13604: ghci no longer loads dynamic .o files by default if they were built with -O -------------------------------------+------------------------------------- Reporter: George | Owner: dfeuer Type: bug | Status: patch Priority: highest | Milestone: 8.2.2 Component: Compiler | Version: 8.2.1-rc1 Resolution: | Keywords: | RecompilationCheck Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D4123 Wiki Page: | -------------------------------------+------------------------------------- Comment (by dfeuer): elaforge, I have an idea that feels like it provides a reasonably consistent UI, but I'd like to see what you think. 1. Optimization flags (including `-O0`) imply `-fobject-code`. This ensures that GHC respects optimization flags regardless of `--interactive`. 2. Even when `-fobject-code` is on, `:load *M` will load `M` as bytecode. This provides the "escape hatch" from `-fobject-code` that you need to use debugging features, etc. 3. We add `-fignore-optim-changes` and `-fignore-hpc-changes` (​Phab:D4123), enabling users to put together object code and bytecode with diverse optimization levels and HPC info while still updating automatically based on source changes and whether profiling is enabled. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13604#comment:48 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler