Port rustc_intrinsic_const_stable_indirect to the new attribute parser

Author: jdonszelmann

compiler/rustc_attr_parsing/src/attributes/rustc_internal.rs

@@ -730,3 +730,12 @@ impl<S: Stage> NoArgsAttributeParser<S> for RustcIntrinsicParser {
     const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[Allow(Target::Fn)]);
     const CREATE: fn(Span) -> AttributeKind = |_| AttributeKind::RustcIntrinsic;
 }
+
+pub(crate) struct RustcIntrinsicConstStableIndirectParser;
+
+impl<S: Stage> NoArgsAttributeParser<S> for RustcIntrinsicConstStableIndirectParser {
+    const PATH: &'static [Symbol] = &[sym::rustc_intrinsic_const_stable_indirect];
+    const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Error;
+    const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[Allow(Target::Fn)]);
+    const CREATE: fn(Span) -> AttributeKind = |_| AttributeKind::RustcIntrinsicConstStableIndirect;
+}

compiler/rustc_attr_parsing/src/context.rs

@@ -260,6 +260,7 @@ attribute_parsers!(
         Single<WithoutArgs<RustcDumpVtableParser>>,
         Single<WithoutArgs<RustcHasIncoherentInherentImplsParser>>,
         Single<WithoutArgs<RustcHiddenTypeOfOpaquesParser>>,
+        Single<WithoutArgs<RustcIntrinsicConstStableIndirectParser>>,
         Single<WithoutArgs<RustcIntrinsicParser>>,
         Single<WithoutArgs<RustcLintOptTyParser>>,
         Single<WithoutArgs<RustcLintQueryInstabilityParser>>,

compiler/rustc_hir/src/attrs/data_structures.rs

@@ -1106,6 +1106,9 @@ pub enum AttributeKind {
     /// Represents `#[rustc_intrinsic]`
     RustcIntrinsic,
 
+    /// Represents `#[rustc_intrinsic_const_stable_indirect]`
+    RustcIntrinsicConstStableIndirect,
+
     /// Represents `#[rustc_layout]`
     RustcLayout(ThinVec<RustcLayoutType>),
 

compiler/rustc_hir/src/attrs/encode_cross_crate.rs

@@ -116,6 +116,7 @@ impl AttributeKind {
             RustcHiddenTypeOfOpaques => No,
             RustcIfThisChanged(..) => No,
             RustcIntrinsic => Yes,
+            RustcIntrinsicConstStableIndirect => No,
             RustcLayout(..) => No,
             RustcLayoutScalarValidRangeEnd(..) => Yes,
             RustcLayoutScalarValidRangeStart(..) => Yes,

compiler/rustc_middle/src/ty/util.rs

@@ -1691,7 +1691,10 @@ pub fn intrinsic_raw(tcx: TyCtxt<'_>, def_id: LocalDefId) -> Option<ty::Intrinsi
         Some(ty::IntrinsicDef {
             name: tcx.item_name(def_id),
             must_be_overridden,
-            const_stable: tcx.has_attr(def_id, sym::rustc_intrinsic_const_stable_indirect),
+            const_stable: find_attr!(
+                tcx.get_all_attrs(def_id),
+                AttributeKind::RustcIntrinsicConstStableIndirect
+            ),
         })
     } else {
         None

compiler/rustc_passes/src/check_attr.rs

@@ -311,6 +311,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
                     | AttributeKind::RustcHiddenTypeOfOpaques
                     | AttributeKind::RustcIfThisChanged(..)
                     | AttributeKind::RustcIntrinsic
+                    | AttributeKind::RustcIntrinsicConstStableIndirect
                     | AttributeKind::RustcLayout(..)
                     | AttributeKind::RustcLayoutScalarValidRangeEnd(..)
                     | AttributeKind::RustcLayoutScalarValidRangeStart(..)
@@ -383,7 +384,6 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
                             | sym::rustc_insignificant_dtor
                             | sym::rustc_nonnull_optimization_guaranteed
                             | sym::rustc_inherit_overflow_checks
-                            | sym::rustc_intrinsic_const_stable_indirect
                             | sym::rustc_trivial_field_reads
                             | sym::rustc_on_unimplemented
                             | sym::rustc_do_not_const_check