#16131: -ddump-cmm doesn't work when compiling cmm files -------------------------------------+------------------------------------- Reporter: osa1 | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- I want to see Cmm generated for `StgMiscClosures.cmm` so I tried adding `-ddump-cmm` to the command the build system runs to build it, which doesn't work: {{{ $ "inplace/bin/ghc-stage1" -static -O0 -H64m -Wall -Iincludes -Iincludes/dist -Iincludes/dist-derivedconstants/header -Iincludes/dist- ghcconstants/header -Irts -Irts/dist/build -DCOMPILING_RTS -DFS_NAMESPACE=rts -this-unit-id rts -dcmm-lint -i -irts -irts/dist/build -Irts/dist/build -irts/dist/build/./autogen -Irts/dist/build/./autogen -O2 -Wcpp-undef -Wnoncanonical-monad-instances -c rts/StgMiscClosures.cmm -o rts/dist/build/StgMiscClosures.o -fforce-recomp -ddump-cmm }}} Why do I need cmm dumps of cmm files? - When building Cmm even the parser does code generation, so the Cmm after parsing is quite different than the input and contains useful information. - I want all macros to be expanded, running CPP manually is painful. - I currently can't see output of Cmm optimisations when building Cmm files. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16131 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler