[Issue 22158] Optimize away empty loops

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22158

moonlightsentinel at disroot.org changed:

           What    |Removed                     |Added
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           Keywords|                            |backend
                 CC|                            |moonlightsentinel at disroot.o
                   |                            |rg

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