[llvm-bugs] [Bug 32807] New: [x86 disassembler] XMM registers used incorrectly in address calculation

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https://bugs.llvm.org/show_bug.cgi?id=32807

            Bug ID: 32807
           Summary: [x86 disassembler] XMM registers used incorrectly in
                    address calculation
           Product: libraries
           Version: 3.9
          Hardware: Other
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: MC
          Assignee: unassignedbugs at nondot.org
          Reporter: nholcomb at wisc.edu
                CC: llvm-bugs at lists.llvm.org

The following EVEX instruction is decoded with an XMM register used incorrectly
in address calculation. This happens for quite a few similar EVEX instructions.
I tried assembling the LLVM Output using gas and received an error.

Bytes:          62 a1 2d d4 db 6c b6 08
LLVM Output:    vpandd 32(%rsi,%xmm14,4){1to16}, %zmm26, %zmm21 {%k4} {z}
Error from gas: unsupported vector index register for `vpandd'
Expected:       vpandd 32(%rsi, %r14, 4){1to16}, %zmm26, %zmm21{%k4}{z}

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