there's no actual collapse. Those bindings are just *inlined*, and so
#13390: Strict literal float-out during desugaring regresses T1969 at -O0 -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.4.1 Component: Compiler | Version: 8.0.1 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 bgamari): It wasn't entirely clear to me what "phantom CSE" meant in comment:5. dfeuer clarifies: they aren't needed anymore. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13390#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler