Port #![profiler_runtime] to the attribute parser.

Author: Ozzy1423

compiler/rustc_attr_parsing/src/attributes/crate_level.rs

@@ -202,3 +202,12 @@ impl<S: Stage> NoArgsAttributeParser<S> for NeedsPanicRuntimeParser {
     const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[Allow(Target::Crate)]);
     const CREATE: fn(Span) -> AttributeKind = |_| AttributeKind::NeedsPanicRuntime;
 }
+
+pub(crate) struct ProfilerRuntimeParser;
+
+impl<S: Stage> NoArgsAttributeParser<S> for ProfilerRuntimeParser {
+    const PATH: &[Symbol] = &[sym::profiler_runtime];
+    const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Warn;
+    const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[Allow(Target::Crate)]);
+    const CREATE: fn(Span) -> AttributeKind = |_| AttributeKind::ProfilerRuntime;
+}

compiler/rustc_attr_parsing/src/context.rs

@@ -28,8 +28,8 @@ use crate::attributes::codegen_attrs::{
 };
 use crate::attributes::confusables::ConfusablesParser;
 use crate::attributes::crate_level::{
-    CrateNameParser, MoveSizeLimitParser, NeedsPanicRuntimeParser, NoCoreParser, NoMainParser,
-    NoStdParser, PanicRuntimeParser, PatternComplexityLimitParser, RecursionLimitParser,
+    CrateNameParser, MoveSizeLimitParser, NeedsPanicRuntimeParser, NoCoreParser, NoMainParser, NoStdParser,
+    PanicRuntimeParser, PatternComplexityLimitParser, ProfilerRuntimeParser, RecursionLimitParser,
     RustcCoherenceIsCoreParser, TypeLengthLimitParser, WindowsSubsystemParser,
 };
 use crate::attributes::debugger::DebuggerViualizerParser;
@@ -282,6 +282,7 @@ attribute_parsers!(
         Single<WithoutArgs<PointeeParser>>,
         Single<WithoutArgs<ProcMacroAttributeParser>>,
         Single<WithoutArgs<ProcMacroParser>>,
+        Single<WithoutArgs<ProfilerRuntimeParser>>,
         Single<WithoutArgs<PubTransparentParser>>,
         Single<WithoutArgs<RustcAllocatorParser>>,
         Single<WithoutArgs<RustcAllocatorZeroedParser>>,

compiler/rustc_hir/src/attrs/data_structures.rs

@@ -909,6 +909,9 @@ pub enum AttributeKind {
     /// Represents `#[proc_macro_derive]`
     ProcMacroDerive { trait_name: Symbol, helper_attrs: ThinVec<Symbol>, span: Span },
 
+    /// Represents `#[profiler_runtime]`
+    ProfilerRuntime,
+
     /// Represents `#[rustc_pub_transparent]` (used by the `repr_transparent_external_private_fields` lint).
     PubTransparent(Span),
 

compiler/rustc_hir/src/attrs/encode_cross_crate.rs

@@ -98,6 +98,7 @@ impl AttributeKind {
             ProcMacro(..) => No,
             ProcMacroAttribute(..) => No,
             ProcMacroDerive { .. } => No,
+            ProfilerRuntime => No,
             PubTransparent(..) => Yes,
             RecursionLimit { .. } => No,
             Repr { .. } => No,

compiler/rustc_metadata/src/rmeta/encoder.rs

@@ -746,7 +746,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {
                 needs_panic_runtime: find_attr!(attrs, AttributeKind::NeedsPanicRuntime),
                 no_builtins: ast::attr::contains_name(attrs, sym::no_builtins),
                 panic_runtime: find_attr!(attrs, AttributeKind::PanicRuntime),
-                profiler_runtime: ast::attr::contains_name(attrs, sym::profiler_runtime),
+                profiler_runtime: find_attr!(attrs, AttributeKind::ProfilerRuntime),
                 symbol_mangling_version: tcx.sess.opts.get_symbol_mangling_version(),
 
                 crate_deps,

compiler/rustc_passes/src/check_attr.rs

@@ -325,6 +325,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
                     | AttributeKind::CompilerBuiltins
                     | AttributeKind::PanicRuntime
                     | AttributeKind::NeedsPanicRuntime
+                    | AttributeKind::ProfilerRuntime
                 ) => { /* do nothing  */ }
                 Attribute::Unparsed(attr_item) => {
                     style = Some(attr_item.style);
@@ -402,7 +403,6 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
                             | sym::reexport_test_harness_main
                             | sym::no_builtins
                             | sym::crate_type
-                            | sym::profiler_runtime
                             | sym::rustc_preserve_ub_checks,
                             ..
                         ] => {}