================
@@ -2886,6 +2886,49 @@ class CXXPseudoDestructorExpr : public Expr {
}
};
+/// Represents a C++26 __builtin_type_order(T, U) expression. Used to implement
+/// std::type_order.
+class BuiltinTypeOrderExpr final : public Expr {
----------------
cor3ntin wrote:
I would *strongly* prefer we go that direction instead of adding a new node.
we have `TypeTraitReturnType` that can be used for that. That was introduced
for StructuredBindingSize, so you can model on that.
We can extend that enum, and do the look up at that point. And we probably want
to cache the type.
I'm not fan of returning a standard type from a builtin but if I recall this is
the community preference, based on the fact `operator<=>` establishes precedent.
https://github.com/llvm/llvm-project/pull/216462
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