[LLVMbugs] [Bug 5470] New: TableGen crashes on some undef bit values

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=5470

           Summary: TableGen crashes on some undef bit values
           Product: tools
           Version: trunk
          Platform: Macintosh
        OS/Version: MacOS X
            Status: NEW
          Severity: normal
          Priority: P2
         Component: TableGen
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: bob.wilson at apple.com
                CC: llvmbugs at cs.uiuc.edu


The following test will crash TableGen:

// RUN: tblgen %s
class x {
  field bits<32> A;
}

class y<bits<2> B> : x {
  let A{21-20} = B;
}

def z : y<{0,?}>;


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