[llvm-bugs] [Bug 30718] New: Failure to disassemble certain MOV with rex.W

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Mon Oct 17 12:22:18 PDT 2016


https://llvm.org/bugs/show_bug.cgi?id=30718

            Bug ID: 30718
           Summary: Failure to disassemble certain MOV with rex.W
           Product: libraries
           Version: 3.9
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: nholcomb at wisc.edu
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

The LLVM disassembler returns an error when given the following bytes: 4c 8e ca

Looking at the output of XED and other disassemblers, it appears that the
instruction should be: mov %rdx, %cs

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