Rollup merge of #140809 - bjorn3:panic_runtime_cleanup, r=petrochenkov

Reduce special casing for the panic runtime

See the individual commits for more info.

1 files changed, 6 insertions, 0 deletions

diff --git a/compiler/rustc_middle/src/middle/exported_symbols.rs b/compiler/rustc_middle/src/middle/exported_symbols.rs
index 64a1f2aff15..c70ff398cea 100644
--- a/compiler/rustc_middle/src/middle/exported_symbols.rs
+++ b/compiler/rustc_middle/src/middle/exported_symbols.rs
@@ -31,11 +31,17 @@ pub enum SymbolExportKind {
 
 /// The `SymbolExportInfo` of a symbols specifies symbol-related information
 /// that is relevant to code generation and linking.
+///
+/// The difference between `used` and `rustc_std_internal_symbol` is that the
+/// former is exported by LTO while the latter isn't.
 #[derive(Eq, PartialEq, Debug, Copy, Clone, TyEncodable, TyDecodable, HashStable)]
 pub struct SymbolExportInfo {
     pub level: SymbolExportLevel,
     pub kind: SymbolExportKind,
+    /// Was the symbol marked as `#[used(compiler)]` or `#[used(linker)]`?
     pub used: bool,
+    /// Was the symbol marked as `#[rustc_std_internal_symbol]`?
+    pub rustc_std_internal_symbol: bool,
 }
 
 #[derive(Eq, PartialEq, Debug, Copy, Clone, TyEncodable, TyDecodable, HashStable)]