[Bug gas/16489] New: GAS doesn't complain about same register used for destination and index in AVX512 gather insn.

[michael.v.zolotukhin at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=16489

            Bug ID: 16489
           Summary: GAS doesn't complain about same register used for
                    destination and index in AVX512 gather insn.
           Product: binutils
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gas
          Assignee: unassigned at sourceware dot org
          Reporter: michael.v.zolotukhin at gmail dot com

GAS doesn't complain about the following insns (depending on operand-check flag
it should emit error/warning/nothing):
vgatherqps      ymm5{k3}, [eax+zmm5]
vpgatherqd      ymm5{k3}, [eax+zmm5]
While destination and index registers should be distinct.  There is such check
for AVX2 gathers, but AVX512 gathers lack it.

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