[Issue 19617] [REG 2.085a] Much slower GC compared to 2.084

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19617

--- Comment #1 from Basile-z <b2.temp at gmx.com> ---
So it's likely the GC that's slower not the cde generated. If you add a
GC.dsiable; before start the stopwatch the timing are similar using 2.084 and
~master.

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