[GHC] #10923: GHC should recompile if flags change

[GHC]

#10923: GHC should recompile if flags change
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        Reporter:  ezyang            |                Owner:
            Type:  bug               |               Status:  new
        Priority:  low               |            Milestone:
       Component:  Compiler          |              Version:  7.10.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Edward Z. Yang <ezyang@…>):

 In [changeset:"818760d68c0e5e4479a4f64fc863303ff5f23a3a/ghc" 818760d/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="818760d68c0e5e4479a4f64fc863303ff5f23a3a"
 Fix #10923 by fingerprinting optimization level.

 Signed-off-by: Edward Z. Yang <ezyang at cs.stanford.edu>

 Test Plan: validate

 Reviewers: simonmar, austin, bgamari, thomie, rwbarton

 Differential Revision: https://phabricator.haskell.org/D2509

 GHC Trac Issues: #10923
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10923#comment:5>
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