[LLVMbugs] [Bug 1268] NEW: slow compilation coming from dse

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=1268

           Summary: slow compilation coming from dse
           Product: new-bugs
           Version: unspecified
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: baldrick at free.fr


opt -dse takes about 15 minutes on the original byte code (see
orig.ll attachment).  I reduced it somewhat using bugpoint,
and it now takes about 2 minutes (reduced.ll).  I reduced it
completely using bugpoint with a timeout of 5 seconds, but
it seems like it was reduced too much, but I attach it anyway
as too_reduced.ll.



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