#8973: Fewer CPSZ: lines with -dshow-passes -------------------------------------+------------------------------------ Reporter: simonpj | Owner: simonmar Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Comment (by ezyang): The cause is we're running mapAccumL, calling the CPSZ pass on each `CmmGroup` in the stream. The obvious thing is to hoist the print out, but the tradeoff is now your debug output when you dump C-- no longer has demarcation markers: {{{ *** CPSZ: ==================== Post CPS Cmm ==================== ... ==================== Output Cmm ==================== ... ==================== Cmm produced by new codegen ==================== ... *** CPSZ: ==================== Post CPS Cmm ==================== ... ==================== Output Cmm ==================== ... ==================== Cmm produced by new codegen ==================== ... }}} Maybe we can do something more clever, or maybe it's OK to not have things partitioned up this way. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8973#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler