[LLVMbugs] [Bug 310] NEW: [tailduplicate] Tail duplication crash

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.cs.uiuc.edu/bugs/show_bug.cgi?id=310

           Summary: [tailduplicate] Tail duplication crash
           Product: libraries
           Version: 1.2
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Scalar Optimizations
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sabre at nondot.org


The verifier asserts after tail duplication on the following testcase:

void %interpret() {
entry:
        br label %retry

retry:
        %tmp.8 = call int %interp() 
        switch uint 0, label %endif.4 [
                 uint 4294967271, label %return
                 uint 4294967280, label %return
        ]

endif.4:
        br bool false, label %return, label %retry

return:
        %result.0 = phi int [ %tmp.8, %retry ], [ %tmp.8, %endif.4 ]
        ret void
}

declare int %interp()



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