[commit: ghc] master: Make GHC generics capable of handling unboxed types (6cde981)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/6cde981a8788b225819be28659caddc35b77972d/ghc

>---------------------------------------------------------------

commit 6cde981a8788b225819be28659caddc35b77972d
Author: RyanGlScott <ryan.gl.scott at gmail.com>
Date:   Sat Oct 3 19:21:37 2015 +0200

    Make GHC generics capable of handling unboxed types
    
    This adds a data family (`URec`) and six data family instances (`UAddr`,
    `UChar`, `UDouble`, `UFloat`, `UInt`, and `UWord`) which a `deriving
    Generic(1)` clause will generate if it sees `Addr#`, `Char#`, `Double#`,
    `Float#`, `Int#`, or `Word#`, respectively. The programmer can then
    provide instances for these data family instances to provide custom
    implementations for unboxed types, similar to how derived `Eq`, `Ord`,
    and `Show` instances currently special-case unboxed types.
    
    Fixes #10868.
    
    Test Plan: ./validate
    
    Reviewers: goldfire, dreixel, bgamari, austin, hvr, kosmikus
    
    Reviewed By: dreixel, kosmikus
    
    Subscribers: simonpj, thomie
    
    Differential Revision: https://phabricator.haskell.org/D1239
    
    GHC Trac Issues: #10868


>---------------------------------------------------------------

6cde981a8788b225819be28659caddc35b77972d
 compiler/prelude/PrelNames.hs                |  65 ++++++++++---
 compiler/typecheck/TcGenGenerics.hs          | 132 ++++++++++++++++++++-------
 docs/users_guide/7.12.1-notes.rst            |   3 +
 docs/users_guide/glasgow_exts.rst            |  42 +++++++++
 libraries/base/GHC/Generics.hs               | 108 +++++++++++++++++++++-
 libraries/base/changelog.md                  |   4 +
 testsuite/tests/generics/GEq/GEq1.hs         |  33 +++++--
 testsuite/tests/generics/GEq/GEq1.stdout     |   2 +
 testsuite/tests/generics/GEq/GEq1A.hs        |  18 +++-
 testsuite/tests/generics/GShow/GShow.hs      |  16 +++-
 testsuite/tests/generics/GShow/GShow1.stdout |   1 +
 testsuite/tests/generics/GShow/Main.hs       |  10 +-
 testsuite/tests/generics/T8468.stderr        |   2 +-
 13 files changed, 377 insertions(+), 59 deletions(-)

Diff suppressed because of size. To see it, use:

    git diff-tree --root --patch-with-stat --no-color --find-copies-harder --ignore-space-at-eol --cc 6cde981a8788b225819be28659caddc35b77972d