[commit: ghc] wip/ghc-8.0-det: Make inert_model and inert_eqs deterministic sets (6b079a2)

[git at git.haskell.org]

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

On branch  : wip/ghc-8.0-det
Link       : http://ghc.haskell.org/trac/ghc/changeset/6b079a206c1ead10fe0e9c169b3250a79f01549c/ghc

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

commit 6b079a206c1ead10fe0e9c169b3250a79f01549c
Author: Bartosz Nitka <niteria at gmail.com>
Date:   Tue May 17 05:45:43 2016 -0700

    Make inert_model and inert_eqs deterministic sets
    
    The order inert_model and intert_eqs fold affects the order that the
    typechecker looks at things. I've been able to experimentally confirm
    that the order of equalities and the order of the model matter for
    determinism. This is just a straigthforward replacement of
    nondeterministic VarEnv for deterministic DVarEnv.
    
    Test Plan: ./validate
    
    Reviewers: simonpj, goldfire, austin, bgamari, simonmar
    
    Reviewed By: simonmar
    
    Subscribers: thomie
    
    Differential Revision: https://phabricator.haskell.org/D2232
    
    GHC Trac Issues: #4012


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6b079a206c1ead10fe0e9c169b3250a79f01549c
 compiler/basicTypes/VarEnv.hs                      | 28 +++++++++--
 compiler/typecheck/TcFlatten.hs                    |  4 +-
 compiler/typecheck/TcInteract.hs                   |  2 +-
 compiler/typecheck/TcSMonad.hs                     | 58 +++++++++++-----------
 compiler/utils/UniqDFM.hs                          | 22 +++++++-
 .../tests/indexed-types/should_fail/T3330a.stderr  |  5 +-
 .../tests/indexed-types/should_fail/T4174.stderr   |  4 +-
 .../tests/indexed-types/should_fail/T4179.stderr   |  6 +--
 .../tests/indexed-types/should_fail/T9662.stderr   |  4 +-
 testsuite/tests/polykinds/T9017.stderr             |  4 +-
 testsuite/tests/typecheck/should_fail/T7869.stderr |  8 ++-
 11 files changed, 93 insertions(+), 52 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 6b079a206c1ead10fe0e9c169b3250a79f01549c