#14219: Include source location information in -ddump-rule-rewrites -------------------------------------+------------------------------------- Reporter: harendra | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.1 (Debugging) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Debugging | Unknown/Multiple information is incorrect | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj):
Is it feasible/worth it to implement dumping the builtin rules via the -ddump-rules option?
Sadly built-in rules can do things that are hard to express using ordinary LHS/RHS pairs. Like rewriting `4+5` to `9`. That's why they are implemented in code, not pattern matching. It would be a worthy thing to document all the built-in rules in `PrelRules` in the manual. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14219#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler