[GHC] #8748: ghc-7.8-rc1/HEAD: --enable-unregisterised fails to build and run with threaded RTS, profiling mode

[GHC]

#8748: ghc-7.8-rc1/HEAD: --enable-unregisterised fails to build and run with
threaded RTS, profiling mode
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        Reporter:  slyfox            |            Owner:
            Type:  bug               |           Status:  patch
        Priority:  high              |        Milestone:  7.8.1
       Component:  Compiler          |          Version:  7.8.1-rc1
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:  8301
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Comment (by Austin Seipp <austin@…>):

 In [changeset:"2d5372cfdc2236a77ec49df249f3379b93224e06/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="2d5372cfdc2236a77ec49df249f3379b93224e06"
 mk/config.mk.in: lower -O2 optimization down to -O1 on UNREG

 Disable -O2 optimization. Otherwise amount of generated C code makes
 things very slow to compile (~5 minutes on core-i7 for
 'compiler/hsSyn/HsExpr.lhs')

 And sometimes not compile at all (powerpc64 overflows something
 on 'compiler/hsSyn/HsExpr.lhs').

 Issue #8748

 Signed-off-by: Sergei Trofimovich <slyfox at gentoo.org>
 Signed-off-by: Austin Seipp <austin at well-typed.com>
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8748#comment:17>
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