Port #[link_ordinal] to the new attribute parsing infrastructure.

Author: Periodic1911

compiler/rustc_attr_parsing/src/attributes/link_attrs.rs

@@ -64,7 +64,7 @@ pub(crate) struct LinkOrdinalParser;
 
 impl<S: Stage> SingleAttributeParser<S> for LinkOrdinalParser {
     const PATH: &[Symbol] = &[sym::link_ordinal];
-    const ATTRIBUTE_ORDER: AttributeOrder = AttributeOrder::KeepFirst;
+    const ATTRIBUTE_ORDER: AttributeOrder = AttributeOrder::KeepLast;
     const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Error;
     const TEMPLATE: AttributeTemplate = template!(List: "ordinal");
 

compiler/rustc_attr_parsing/src/context.rs

@@ -23,7 +23,7 @@ use crate::attributes::confusables::ConfusablesParser;
 use crate::attributes::deprecation::DeprecationParser;
 use crate::attributes::inline::{InlineParser, RustcForceInlineParser};
 use crate::attributes::link_attrs::{LinkNameParser, LinkSectionParser, LinkOrdinalParser};
-use crate::attributes::lint_helpers::{AsPtrParser, PubTransparentParser};
+use crate::attributes::lint_helpers::{AsPtrParser, PubTransparentParser, PassByValueParser};
 use crate::attributes::loop_match::{ConstContinueParser, LoopMatchParser};
 use crate::attributes::must_use::MustUseParser;
 use crate::attributes::no_implicit_prelude::NoImplicitPreludeParser;