#14372: CMM contains a bunch of tail-merging opportunities -------------------------------------+------------------------------------- Reporter: heisenbug | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by heisenbug): Replying to [comment:7 heisenbug]:
`-fcmm-elim-common-blocks` helps a bit, but many equal ones are not caught:
Turns out c-b-e is a local optimisation, i.e. per procedure. We need a global one to crack this. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14372#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler