[commit: ghc] wip/T9291's head updated: More work on STG CSE (42c63be)

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Repository : ssh://git@git.haskell.org/ghc

Branch 'wip/T9291' now includes:

     0af959b Revert "Do not init record accessors as exported"
     87c3b1d fix OpenBSD linkage (wxneeded)
     6c816c5 utils/genargs: delete unused tool
     8906e7b Reshuffle levity polymorphism checks.
     3dbd2b0 Windows: Improve terminal detection mechanism
     2d1beb1 rts/win32/IOManager: Fix integer types
     343b147 Reexport Language.Haskell.TH.Lib from Language.Haskell.TH
     2a02040 Fix bug in previous fix for #5654
     90cfa84 Run some tests with -fexternal-interpreter -prof
     21dde81 Improve StringBuffer and FastString docs
     e0fe7c3 Docs: Delete duplicate paragraph in user guide
     52ba947 Allow use of the external interpreter in stage1.
     25b70a2 Check family instance consistency of hs-boot families later, fixes #11062.
     630cfc3 Fix Haddock comment typo.
     b5d788a Introduce unboxedSum{Data,Type}Name to template-haskell
     513eb6a Fix #12998 by removing CTimer
     88e8194 T12035j: disable on NOSMP targets
     4704d65 T8209: disable on NOSMP targets
     7f5be7e T10296a: disable on NOSMP targets
     d327ebd regalloc_unit_tests: disable on UNREG targets
     bb74bc7 T8242: disable on NOSMP targets
     f1dfce1 Revert "Allow use of the external interpreter in stage1."
     6263e10 Fix timeout's timeout on Windows
     c0c1f80 Mark T8089 as unbroken since #7325 is now resolved
     27f7925 Allow use of the external interpreter in stage1.
     4535fa2 Test Trac #12996
     8fdb937 Make CompactionFailed a newtype
     574abb7 Rewrite Note [Api annotations] for clarity.
     9a29b65 Suppress duplicate .T files
     1771da2 Fix typos (not test relevant)
     f97d489 Test Trac #12968, plus some comments
     c73a982 Add note for rebindable syntax of [a..b]
     c66dd05 Move typeSize/coercionSize into TyCoRep
     d250d49 Add INLINE pragamas on Traversable default methods
     e07ad4d Don't eta-expand in stable unfoldings
     0a18231 Lint DFunUnfoldings
     05d233e Move InId/OutId to CoreSyn
     c48595e Never apply worker/wrapper to DFuns
     1a4c04b Fix 'SPECIALISE instance'
     c469db4 Test Trac #12950
     74033c4 Improved perf for T12227
     ccc918c Fix a forward reference to a Note
     2189239 Disambiguate two Notes with identical names
     ee4e165 Support for abi-depends for computing shadowing.
     99db12f Update ghc-cabal command line usage text.
     46f7f31 Notes on parsing lists in Parser.y
     41ade95 Fix another forward reference to a Note
     b7a6e62 Revert "Suppress duplicate .T files"
     4065fee Add a CSE pass to Stg (#9291)
     42c63be More work on STG CSE