[GHC] #10527: Panic Simplifier ticks exhausted with type families

[GHC]

#10527: Panic Simplifier ticks exhausted with type families
-------------------------------------+-------------------------------------
        Reporter:  sopvop            |                   Owner:  bgamari
            Type:  bug               |                  Status:  new
        Priority:  highest           |               Milestone:  7.10.2
       Component:  Compiler          |                 Version:  7.10.1-rc1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------

Comment (by bgamari):

 Reading through the patch it indeed seems that the `NoDup` to `Simplified`
 change that I noticed above could have arisen out of this commit. See the
 treatment of `simplArg` for
 https://phabricator.haskell.org/rGHC8af219adb914b292d0f8c737fe0a1e3f7fb19cf3#C60694NL1193
 for how. That being said, using `dup_flag` instead of `Simplified` on line
 1203 doesn't seem to help. I'll need more sleep to get any further I'm
 afraid.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10527#comment:12>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler