add FIXME to EnumTagInfo

rust-lang · Jun 15, 2020 · 10c8d2a · 10c8d2a
1 parent 7a6d03c
commit 10c8d2a
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/librustc_codegen_llvm/debuginfo/metadata.rs b/src/librustc_codegen_llvm/debuginfo/metadata.rs
@@ -1637,6 +1637,9 @@ impl VariantMemberDescriptionFactory<'ll, 'tcx> {
     }
 }
 
+// FIXME: terminology here should be aligned with `abi::TagEncoding`.
+// `OptimizedTag` is `TagEncoding::Niche`, `RegularTag` is `TagEncoding::Direct`.
+// `NoTag` should be removed; users should use `Option<EnumTagInfo>` instead.
 #[derive(Copy, Clone)]
 enum EnumTagInfo<'ll> {
     RegularTag { tag_field: Field, tag_type_metadata: &'ll DIType },