[GHC] #7679: Regression in -fregs-graph performance

[GHC]

#7679: Regression in -fregs-graph performance
-------------------------------------+-------------------------------------
        Reporter:  simonmar          |                Owner:
            Type:  bug               |               Status:  new
        Priority:  low               |            Milestone:
       Component:  Compiler (NCG)    |              Version:  7.6.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #7192, #8657      |  Differential Rev(s):
-------------------------------------+-------------------------------------

Comment (by Ben Gamari <ben@…>):

 In [changeset:"6a5d13c4ade5bbb84873970065a1acd1546f6c31/ghc"
 6a5d13c4/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="6a5d13c4ade5bbb84873970065a1acd1546f6c31"
 nativeGen: Allow -fregs-graph to be used

 Previously the flag was silently ignored due the #7679 and #8657. This,
 however, seems unnecessarily brutal and makes experimentation unduly
 difficult for users.

 Test Plan: Validate

 Reviewers: austin, simonmar

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D2335

 GHC Trac Issues: #7679, #8657
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7679#comment:11>
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