[GHC] #9439: LlvmCodegen: Overzealous mangler incorrectly transforms user code

[GHC]

#9439: LlvmCodegen: Overzealous mangler incorrectly transforms user code
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              Reporter:  bgamari     |            Owner:
                  Type:  bug         |           Status:  merge
              Priority:  highest     |        Milestone:  7.8.4
             Component:  Compiler    |          Version:  7.8.2
  (LLVM)                             |         Keywords:
            Resolution:              |     Architecture:  Unknown/Multiple
      Operating System:              |       Difficulty:  Unknown
  Unknown/Multiple                   |       Blocked By:
       Type of failure:              |  Related Tickets:
  None/Unknown                       |
             Test Case:              |
              Blocking:  9268        |
Differential Revisions:  Phab:D150   |
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Comment (by Austin Seipp <austin@…>):

 In [changeset:"bbd031134a571c1020945b2548e3fc4795b5047a/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="bbd031134a571c1020945b2548e3fc4795b5047a"
 Bug #9439: Ensure that stage 0 compiler isn't affected

 Summary:
 Bug #9439 will cause miscompilation of GHC's LLVM backend. Here we
 ensure that an affected compiler isn't used to bootstrap.

 Test Plan: Attempt to bootstrap GHC with an affected stage 0 compiler.

 Reviewers: rwbarton, austin

 Reviewed By: austin

 Subscribers: simonmar, relrod, ezyang, carter

 Differential Revision: https://phabricator.haskell.org/D159
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9439#comment:8>
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