Re: [PATCH 0/1] MR442: vkd3d-shader/ir: Normalise opcode double variants to their equivalent float variants.

[Conor McCarthy (＠cmccarthy)]

An alternative is to still handle the double opcode variants, and change `emit_ftoi()` and `emit_ftou()` to support `DTOI` and `DTOU`, but do we want the backend to handle some instructions which do exactly the same thing as some other instructions?

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https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/442#note_50990