[commit: ghc] wip/spj-early-inline: Improve pretty-printing of types (9ffdf62)

[git at git.haskell.org]

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

On branch  : wip/spj-early-inline
Link       : http://ghc.haskell.org/trac/ghc/changeset/9ffdf62b0ca72c4f35579f9d6f31a9beebf23025/ghc

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commit 9ffdf62b0ca72c4f35579f9d6f31a9beebf23025
Author: Simon Peyton Jones <simonpj at microsoft.com>
Date:   Fri Feb 17 12:30:35 2017 +0000

    Improve pretty-printing of types
    
    When doing debug-printing it's really important that the free vars
    of a type are printed with their uniques.  The IfaceTcTyVar thing
    was a stab in that direction, but it only worked for TcTyVars, not
    TyVars.
    
    This patch does it properly, by keeping track of the free vars of the
    type when translating Type -> IfaceType, and passing that down through
    toIfaceTypeX.  Then when we find a variable, look in that set, and
    translate it to IfaceFreeTyVar if so.  (I renamed IfaceTcTyVar to
    IfaceFreeTyVar.)
    
    Fiddly but not difficult.


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9ffdf62b0ca72c4f35579f9d6f31a9beebf23025
 compiler/backpack/RnModIface.hs |   4 +-
 compiler/iface/IfaceSyn.hs      |   2 +-
 compiler/iface/IfaceType.hs     |  38 +++++------
 compiler/iface/TcIface.hs       |   2 +-
 compiler/iface/ToIface.hs       | 143 +++++++++++++++++++++++-----------------
 compiler/iface/ToIface.hs-boot  |   2 +
 compiler/typecheck/TcRnTypes.hs |   5 +-
 compiler/types/TyCoRep.hs       |  37 ++++++-----
 compiler/types/Type.hs          |   2 +-
 compiler/types/Type.hs-boot     |   1 +
 10 files changed, 134 insertions(+), 102 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 9ffdf62b0ca72c4f35579f9d6f31a9beebf23025