[commit: ghc] master: Move orphan instance/rule warnings to typechecker/desugarer. (931d0a7)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/931d0a7d1cd296f8c2a6190a06a2d3dcc8996ac3/ghc

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

commit 931d0a7d1cd296f8c2a6190a06a2d3dcc8996ac3
Author: Edward Z. Yang <ezyang at cs.stanford.edu>
Date:   Thu Oct 1 15:24:41 2015 -0700

    Move orphan instance/rule warnings to typechecker/desugarer.
    
    Summary:
    Instead of doing these warnings at MkIface time, we do them
    when we create the instances/rules in the typechecker/desugarer.
    
    Emitting warnings for auto-generated instances was a pain
    (since the specialization monad doesn't have the capacity
    to emit warnings) so instead I just deprecated -fwarn-auto-orphans.
    Auto rule orphans are pretty harmless anyway: they don't cause
    interface files to be eagerly loaded in.
    
    Signed-off-by: Edward Z. Yang <ezyang at cs.stanford.edu>
    
    Test Plan: validate
    
    Reviewers: simonpj, austin, bgamari
    
    Subscribers: thomie
    
    Differential Revision: https://phabricator.haskell.org/D1297


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

931d0a7d1cd296f8c2a6190a06a2d3dcc8996ac3
 compiler/deSugar/Desugar.hs                        |  6 +-
 compiler/deSugar/DsBinds.hs                        | 17 +++-
 compiler/iface/MkIface.hs                          | 93 ++++------------------
 compiler/main/DynFlags.hs                          |  3 +-
 compiler/main/HscMain.hs                           |  6 +-
 compiler/specialise/Specialise.hs                  | 20 +++++
 compiler/typecheck/Inst.hs                         | 16 +++-
 compiler/typecheck/TcGenGenerics.hs                | 23 +++---
 compiler/types/InstEnv.hs                          |  4 +-
 docs/users_guide/using-warnings.rst                | 10 +--
 .../tests/typecheck/should_compile/T4912.stderr    |  8 +-
 .../tests/warnings/should_compile/T9178.stderr     |  4 +-
 utils/mkUserGuidePart/Options/Warnings.hs          |  4 +-
 13 files changed, 96 insertions(+), 118 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 931d0a7d1cd296f8c2a6190a06a2d3dcc8996ac3