[commit: ghc] wip/D4889's head updated: rts: Specialize hashing at call site rather than in struct. (fd49675)

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

Branch 'wip/D4889' now includes:

     653dc5f Bump Cabal submodule
     8d04822 Bump binary submodule
     7535fd6 Bump filepath submodule
     8801642 testsuite: Bump T3064 expected allocations
     47e54a0 Bump hadrian submodule
     73683f1 Refactor printMinimalImports (#15439)
     0095cde Fix typos
     f355b72 circleci: Don't build validate-x86_64-linux-debug unregisterised
     4d91cab Allow scoped type variables refer to types
     d7bc05e Create 8.8.1 release notes
     b14040d Move 8.8.1-notes.rst to the right directory
     f811685 Mention #15050 in the release notes for 8.8.1
     e94cc29 Use -fobject-code in the GHCi script for loading GHC
     29dfb63 Strip ../ from testdir (fixes #15469)
     36a4c19 Testsuite driver: fix encoding issue when calling ghc-pkg
     4fc6524 Stop the linker panic
     ff06176 Improve error message for flags with missing required arguments (#12625)
     c6cc93b rts: Ensure that the_gc_thread is aligned
     8b357c6 Add since annotation to GHC.ByteOrder
     ce9b459 docs: Fix wrong module name in hsig example
     672f177 Unhide GHC.List for haddock
     24b76d1 [docs] Add missed specialisations warnings to list of those not enabled by -Wall
     e28bb01 fix timeout related i686 validation issues
     7d77198 Support typechecking of type literals in backpack
     2604d9b Bump binary submodule to 0.8.6.0
     f22baa4 users-guide: Enlarge title underlines in 8.8 release notes
     aab8656 Turn on MonadFail desugaring by default
     e5b128c Bump Cabal submodule
     5487f30 testsuite: Add (broken) test for #15473
     e2db2d5 Yet another Cabal submodule bump
     4d6dfc3 Allow arbitrary options to be passed to tar compression
     e2b5c54 Revert "rts: Ensure that the_gc_thread is aligned"
     9f93714 circleci: Fix documentation building
     5be646f circleci: Reduce build verbosity
     60e12f2 circleci: Reduce compression effort to 3
     396aac4 Add FreeBSD amd64 LLVM target
     ce47a9c base: improve Functor documentation
     342f27f Bump unix submodule
     b44e747 testsuite: Bump for unix 2.7
     b324c56 Filter plugin dylib locations
     f27d714 Simplify testsuite driver
     97596a4 Simplify testsuite driver, part 2
     ec49b42 CSE should deal with letrec
     193eeee use *test instead of *slowtest for llvm validation on Circle CI
     d42eef3 --show-iface: Qualify all non-local names
     f7f9820 Check if files are same in combineSrcSpans
     c552fee Suppress redundant givens during error reporting
     bd48a88 Bump parsec submodule
     32008a9 Properly designate LambdaCase alts as CaseAlt in TH
     2908899 primops: Drop support for WORD_SIZE_IN_BITS < 32
     9f932d8 Add a test for Trac #15523
     1e741fe Cosmetics in GraphColor
     7a63f75 primops: Drop documentation for WORD_SIZE_IN_BITS < 32
     5238f20 Fix #15527 by pretty-printing an RdrName prefixly
     a50244c Rename SigTv to TyVarTv (#15480)
     23f6f31 Document default value of +RTS -N in user's guide
     63b6a1d Be mindful of GADT tyvar order when desugaring record updates
     ae68f32 base: rewrite Monoid module docs
     2748e95 base: Rewrite semigroup documentation
     8154faf Make ghci work for stage1 and Hadrian
     1bbb5fa Add comment explaining change in syntax error suggestion for #12146.
     8f4df7f Add test cases for Ticket #12146.
     a08b285 CSE should deal with letrec (#9441)
     ecc0ddf Initialise cec_suppress properly
     d04a152 Update .mailmap [skip ci]
     2671ec5 Bump stm submodule
     9c4e6c6 Expose the StableName constructor
     ce6ce78 Set strictness correctly for JoinIds
     18c302c Improve ambiguous-occurrence error message
     828e949 Comments only
     43b08cf Add a solveEqualities to tcClassDecl1
     fd49675 rts: Specialize hashing at call site rather than in struct.