[Bug gas/20140] New: CpuAVX512VL should be treated like Cpu64

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=20140

            Bug ID: 20140
           Summary: CpuAVX512VL should be treated like Cpu64
           Product: binutils
           Version: 2.27 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gas
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
                CC: kirill.yukhin at intel dot com
  Target Milestone: ---
            Target: x86

An 128-bit AVX512CD instruction

vpconflictd     %xmm0, %xmm15   

requires AVX512VL.  But I got

 address@hidden tmp]$ cat a.s
.arch corei7
.arch .avx512f
.arch .avx512cd
vpconflictd     %xmm0, %xmm15   
address@hidden tmp]$ gcc -c a.s               
address@hidden tmp]$

It should be an error.

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