http://llvm.org/bugs/show_bug.cgi?id=18515

            Bug ID: 18515
           Summary: Crash trying to EmitRawText msync via the object
                    streamer
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: PowerPC
          Assignee: [email protected]
          Reporter: [email protected]
                CC: [email protected]
    Classification: Unclassified

llc -march=ppc32 -mcpu=440 -filetype=obj -o test.o

crashes on

define void @f() {
  fence acquire
  ret void
}

The PowerPC backend has a pretty complete MC support, so the fix should be
trivial, but it is probably better if someone familiar with the ISA looks at
it.

My guess from the existing code is that is most cpus msync is as alias for
"sync 0", but on "book E" versions there is not "sync 0" and msync is a proper
instruction.

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