[LLVMbugs] [Bug 5335] New: poor dse performance

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Wed Oct 28 17:29:22 PDT 2009


           Summary: poor dse performance
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Scalar Optimizations
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: daniel at zuster.org
                CC: llvmbugs at cs.uiuc.edu

Created an attachment (id=3719)
 --> (http://llvm.org/bugs/attachment.cgi?id=3719)
Silly .ll code from clang

DSE performs very poorly on the attached test case.
ddunbar at giles:tmp$ time opt -dse t.bc -o /dev/null

real    0m44.436s
user    0m44.408s
sys     0m0.025s

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