This turned out to be rather lengthy and ambivalent, but my current TLDR;
of this is that GHC.Magic Ids could all be PseudoOps, because we don't use
their definitions anyway.
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Regarding 2., the answer has been right before my eyes in the form of Note
[ghcPrimIds (aka pseudoops)] and Note [magi
Hey fellow devs,
While implementing new PseudoOps, a couple of questions popped up:
1. What are PseudoOps? When do we want to declare one? There doesn't
seem to be any documentation around them. I only figured out that I
probably want a PseudoOp by comparing to PrimOps I thought would be
