[Issue 16958] replace -mavx switch with -mcpu=id

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16958

Walter Bright <bugzilla at digitalmars.com> changed:

           What    |Removed                     |Added
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           Keywords|                            |SIMD
           See Also|                            |https://issues.dlang.org/sh
                   |                            |ow_bug.cgi?id=16914,
                   |                            |https://issues.dlang.org/sh
                   |                            |ow_bug.cgi?id=16945

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