[GHC] #15207: bad dwarf frame in stgRun.c when compiled with with gcc on mac and assembled by as/gcc/clang (aka apple clang assembler)

[GHC]

#15207: bad dwarf frame in stgRun.c when compiled with with gcc on mac and
assembled by as/gcc/clang (aka apple clang assembler)
-------------------------------------+-------------------------------------
        Reporter:  carter            |                Owner:  (none)
            Type:  bug               |               Status:  infoneeded
        Priority:  normal            |            Milestone:  8.8.1
       Component:  Runtime System    |              Version:  8.4.3
      Resolution:                    |             Keywords:
Operating System:  MacOS X           |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4781
       Wiki Page:                    |
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Comment (by carter):

 i did two different threaded runs, thres a clean HUGE difference on clang
 vs gcc, favoring gcc in the GC timings,
 the one program where this is strongly not the case is k nucleo tide,

 I'll attach these two sets of nofib runs here.

 nofib report i name "dirty" is merely "i didn't clean and  rebuild right
 before running nofib". so its likely to be cleaner measurements if thermal
 throttling were an issue (i used the intel power gadget during the first
 run, and I idn't see a difference in peak average frequency between the
 two, at least when eyeballing it)

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15207#comment:30>
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