mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-29 17:05:00 +01:00
Richard Smith
42bda1e38f
When an instruction makes an absolute reference to another instruction, such as when `assoc_const` refers to the declaration of the associated constant in an interface, substitution into that instruction should not substitute into the referenced instruction. Mark the corresponding `InstId` fields in the typed instructions as being absolute by giving them a distinct ID type that `Subst` doesn't substitute into. This formation of unnecessarily complicated SemIR that could in some cases lead to a CHECK failure when printing formatted SemIR because the same instruction ends up in multiple scopes.