Introduce TypeInstId (#5288)

TypeInstId is an InstId whose constant value has a type of TypeType.
This includes:
- Type value instructions, the `ClassType` or `IntLiteralType`
instructions.
- Constraint value instructions, which are the `FacetType` and
`TypeType` instructions, each of which also have type TypeType.

TypeInstId encodes in the type system that it is safe to convert the
instruction's value to a TypeId, and CHECKs at construction that this
invariant is maintained.

---------

Co-authored-by: Richard Smith <richard@metafoo.co.uk>
This commit is contained in:
Dana Jansens
2025-04-10 22:59:02 +00:00
committed by GitHub
co-authored by Richard Smith
parent 03a31bd0de
commit cf57c85545
27 changed files with 202 additions and 111 deletions
+2 -2
View File
@@ -157,8 +157,8 @@ auto GetPointerType(Context& context, SemIR::InstId pointee_type_id)
return GetTypeImpl<SemIR::PointerType>(context, pointee_type_id);
}
auto GetUnboundElementType(Context& context, SemIR::InstId class_type_id,
SemIR::InstId element_type_id) -> SemIR::TypeId {
auto GetUnboundElementType(Context& context, SemIR::TypeInstId class_type_id,
SemIR::TypeInstId element_type_id) -> SemIR::TypeId {
return GetTypeImpl<SemIR::UnboundElementType>(context, class_type_id,
element_type_id);
}