Add @_used and @_section attributes to match #65901

Author: kubamracek

CodeGeneration/Sources/SyntaxSupport/AttributeKinds.swift

@@ -652,6 +652,16 @@ public let DECL_ATTR_KINDS: [Attribute] = [
     className: "RuntimeMetadata",
     swiftName: "runtimeMetadata"
   ),
+  SimpleDeclAttribute(
+    name: "_used",
+    className: "Used",
+    swiftName: "_used"
+  ),
+  DeclAttribute(
+    name: "_section",
+    className: "Section",
+    swiftName: "_section"
+  ),
 ]
 
 /// Schema for declaration modifiers:

CodeGeneration/Sources/SyntaxSupport/KeywordSpec.swift

@@ -72,6 +72,7 @@ public let KEYWORDS: [KeywordSpec] = [
   KeywordSpec("_projectedValueProperty"),
   KeywordSpec("_read"),
   KeywordSpec("_RefCountedObject"),
+  KeywordSpec("_section"),
   KeywordSpec("_semantics"),
   KeywordSpec("_silgen_name"),
   KeywordSpec("_specialize"),

Sources/SwiftParser/Attributes.swift

@@ -46,6 +46,7 @@ extension Parser {
     case _originallyDefinedIn
     case _private
     case _projectedValueProperty
+    case _section
     case _semantics
     case _silgen_name
     case _specialize
@@ -81,6 +82,7 @@ extension Parser {
       case TokenSpec(._originallyDefinedIn): self = ._originallyDefinedIn
       case TokenSpec(._private): self = ._private
       case TokenSpec(._projectedValueProperty): self = ._projectedValueProperty
+      case TokenSpec(._section): self = ._section
       case TokenSpec(._semantics): self = ._semantics
       case TokenSpec(._silgen_name): self = ._silgen_name
       case TokenSpec(._specialize): self = ._specialize
@@ -120,6 +122,7 @@ extension Parser {
       case ._originallyDefinedIn: return .keyword(._originallyDefinedIn)
       case ._private: return .keyword(._private)
       case ._projectedValueProperty: return .keyword(._projectedValueProperty)
+      case ._section: return .keyword(._section)
       case ._semantics: return .keyword(._semantics)
       case ._silgen_name: return .keyword(._silgen_name)
       case ._specialize: return .keyword(._specialize)
@@ -305,6 +308,10 @@ extension Parser {
       return parseAttribute(argumentMode: .required) { parser in
         return .exposeAttributeArguments(parser.parseExposeArguments())
       }
+    case ._section:
+      return parseAttribute(argumentMode: .required) { parser in
+        return .string(parser.parseStringLiteral())
+      }
     case ._originallyDefinedIn:
       return parseAttribute(argumentMode: .required) { parser in
         return .originallyDefinedInArguments(parser.parseOriginallyDefinedInArguments())

Sources/SwiftSyntax/generated/Keyword.swift

@@ -48,6 +48,7 @@ public enum Keyword: UInt8, Hashable {
   case _projectedValueProperty
   case _read
   case _RefCountedObject
+  case _section
   case _semantics
   case _silgen_name
   case _specialize
@@ -471,6 +472,8 @@ public enum Keyword: UInt8, Hashable {
         self = ._forward
       case "_private":
         self = ._private
+      case "_section":
+        self = ._section
       case "_Trivial":
         self = ._Trivial
       case "_version":
@@ -791,6 +794,7 @@ public enum Keyword: UInt8, Hashable {
       "_projectedValueProperty", 
       "_read", 
       "_RefCountedObject", 
+      "_section", 
       "_semantics", 
       "_silgen_name", 
       "_specialize",