[commit: ghc] wip/D5097: Add a -fprint-axiom-incomps option (#15546) (257f915)

Mon Jan 21 01:53:48 UTC 2019

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

On branch  : wip/D5097
Link       : http://ghc.haskell.org/trac/ghc/changeset/257f9155e6be58b5a7f7660dc625cdfa57749e6d/ghc

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

commit 257f9155e6be58b5a7f7660dc625cdfa57749e6d
Author: mniip <mniip at mniip.com>
Date:   Sun Jan 20 20:48:13 2019 -0500

    Add a -fprint-axiom-incomps option (#15546)

    Supply branch incomps when building an IfaceClosedSynFamilyTyCon

    `pprTyThing` now has access to incomps. This also causes them to be
    written out to .hi files, but that doesn't pose an issue other than a
    more faithful bijection between `tyThingToIfaceDecl` and `tcIfaceDecl`.

    The machinery for displaying axiom incomps was already present but not
    in use. Since this is now a thing that pops up in ghci's :info the
    format was modified to look like a haskell comment.

    Documentation and a test for the new feature included.

    Test Plan: T15546

    Reviewers: simonpj, bgamari, goldfire

    Reviewed By: simonpj

    Subscribers: rwbarton, carter

    GHC Trac Issues: #15546

    Differential Revision: https://phabricator.haskell.org/D5097

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

257f9155e6be58b5a7f7660dc625cdfa57749e6d
 compiler/iface/IfaceSyn.hs                 | 34 ++++++++++++++++++++---
 compiler/iface/MkIface.hs                  | 43 +++++++++++++++---------------
 compiler/main/DynFlags.hs                  |  2 ++
 docs/users_guide/glasgow_exts.rst          |  3 +++
 docs/users_guide/using.rst                 | 31 +++++++++++++++++++++
 libraries/Cabal                            |  2 +-
 libraries/binary                           |  2 +-
 libraries/bytestring                       |  2 +-
 libraries/containers                       |  2 +-
 libraries/deepseq                          |  2 +-
 libraries/directory                        |  2 +-
 libraries/hpc                              |  2 +-
 libraries/stm                              |  2 +-
 libraries/text                             |  2 +-
 libraries/time                             |  2 +-
 libraries/unix                             |  2 +-
 nofib                                      |  2 +-
 testsuite/tests/ghci/scripts/T15546.script |  5 ++++
 testsuite/tests/ghci/scripts/T15546.stdout | 11 ++++++++
 testsuite/tests/ghci/scripts/all.T         |  1 +
 utils/haddock                              |  2 +-
 utils/hsc2hs                               |  2 +-
 22 files changed, 119 insertions(+), 39 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 257f9155e6be58b5a7f7660dc625cdfa57749e6d