[GHC] #12706: Collecting type info is slow

[GHC]

#12706: Collecting type info is slow
-------------------------------------+-------------------------------------
        Reporter:  vshabanov         |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  GHCi              |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4459
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by Ben Gamari <ben@…>):

 In [changeset:"969e747f67f57f7dd57c2e549d6a007505671158/ghc" 969e747/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="969e747f67f57f7dd57c2e549d6a007505671158"
 GHCi info: Use src file for cache invalidation

 Prior to this patch GHCi used the modification time of a module's object
 file to invalidate the info cache.

 We now look at the modification time of the source file, if present.

 This addresses part of
 https://ghc.haskell.org/trac/ghc/ticket/12706#comment:3.

 Reviewers: bgamari

 Reviewed By: bgamari

 Subscribers: lelf, alpmestan, rwbarton, thomie, carter

 GHC Trac Issues: #12706

 Differential Revision: https://phabricator.haskell.org/D4459
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12706#comment:7>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler