[LLVMbugs] [Bug 4839] New: SimplifyCFG does not eliminate phi nodes with one predecessor

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=4839

           Summary: SimplifyCFG does not eliminate phi nodes with one
                    predecessor
           Product: new-bugs
           Version: 2.5
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: trivial
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: andrelct at dcc.ufmg.br
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=3396)
 --> (http://llvm.org/bugs/attachment.cgi?id=3396)
Test case

in the description of SimplifyCFG, it says that it can "Eliminates PHI nodes
for basic blocks with a single predecessor."

I tested this pass with a program that has phi nodes with a single predecessor
and it did not remove it. I also looked in the code and found nothing to remove
it.


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