[commit: ghc] master: Change isClosedAlgType to be TYPE-aware, and rename it to pmIsClosedType (4f1f986)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/4f1f9868ae79b5730c6aa14b05394d3f1d10a857/ghc

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commit 4f1f9868ae79b5730c6aa14b05394d3f1d10a857
Author: Ryan Scott <ryan.gl.scott at gmail.com>
Date:   Sat Aug 12 15:51:37 2017 -0400

    Change isClosedAlgType to be TYPE-aware, and rename it to pmIsClosedType
    
    Summary:
    In a267580e4ab37115dcc33f3b8a9af67b9364da12, I somewhat awkwardly
    inserted a special case for `TYPE` in the `EmptyCase` coverage checker.
    Instead of placing it there, @mpickering noted that `isClosedAlgType` would
    be a better fit for it. I do just that in this patch.
    
    I also renamed `isClosedAlgType` to `pmIsClosedType`, reflecting the fact that
    `TYPE` technically isn't an algebraic type (it's a primitive one), and that its
    behavior is pattern-match coverage checking-oriented. I also moved it to
    `Check`, which is a better home for this function than `Type`. Luckily,
    the only call sites for `isClosedAlgType` were in the pattern-match coverage
    checker anyways, so this change is simple enough.
    
    Test Plan: ./validate
    
    Reviewers: mpickering, austin, goldfire, bgamari
    
    Reviewed By: goldfire
    
    Subscribers: rwbarton, thomie, mpickering
    
    GHC Trac Issues: #14086
    
    Differential Revision: https://phabricator.haskell.org/D3830


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4f1f9868ae79b5730c6aa14b05394d3f1d10a857
 compiler/deSugar/Check.hs    | 161 +++++++++++++++++++++++++++++++++++++++----
 compiler/types/FamInstEnv.hs | 114 +-----------------------------
 compiler/types/Type.hs       |  13 +---
 3 files changed, 150 insertions(+), 138 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 4f1f9868ae79b5730c6aa14b05394d3f1d10a857