[GHC] #5824: ARM StgRun register clobber list is broken

GHC cvs-ghc at haskell.org
Tue Feb 7 22:02:35 CET 2012


#5824: ARM StgRun register clobber list is broken
-------------------------------+--------------------------------------------
    Reporter:  bgamari         |       Owner:  simonmar        
        Type:  bug             |      Status:  patch           
    Priority:  high            |   Milestone:  7.4.2           
   Component:  Runtime System  |     Version:  7.4.1-rc2       
    Keywords:                  |          Os:  Unknown/Multiple
Architecture:  arm             |     Failure:  None/Unknown    
  Difficulty:  Unknown         |    Testcase:                  
   Blockedby:                  |    Blocking:                  
     Related:                  |  
-------------------------------+--------------------------------------------

Comment(by kgardas):

 The patch:
 commit 5a984f4388ef85d5c3af973b21a12c12b36c1ed4
 Author: Ben Gamari <bgamari.foss at gmail.com>
 Date:   Mon Jan 30 16:52:40 2012 -0500

     ARM StgRun: Ensure r11 state is preserved

 looks wrong to me. I'm sorry to not review it more earlier, in fact ARM's
 r11 is the same reg as fp. So IMHO whole this patch might be reverted.
 Unfortunately I don't have debian here to check if it helps or not.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5824#comment:8>
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