[Issue 17160] Apparently faulty behavior comparing enum members using `is`

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=17160

Basile-z <b2.temp at gmx.com> changed:

           What    |Removed                     |Added
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           Keywords|                            |performance
                 CC|                            |b2.temp at gmx.com
                 OS|Windows                     |All

--- Comment #3 from Basile-z <b2.temp at gmx.com> ---
compiler explorer shows clearly that for (in Enum) a real (80 bits) comparison
occurs while for (Enum) a more correct (and faster) 64 bits.

https://godbolt.org/z/W5PYMn

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