[Bug d/105360] Inlined lazy parameters / delegate literals, still emitted

[ibuclaw at gdcproject dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105360

--- Comment #2 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
Looks like it's a middle-end missed-optimization, not a D front-end one.

https://godbolt.org/z/5WWYEG4jW

Perhaps we need an extra DCE pass?