Document intrinsic_name

Author: adpaco-aws

compiler/rustc_smir/src/rustc_smir/context.rs

@@ -587,6 +587,10 @@ impl<'tcx> Context for TablesWrapper<'tcx> {
         }
     }
 
+    /// Retrieve the plain intrinsic name of an instance if it's an intrinsic.
+    ///
+    /// The plain name does not include type arguments (as `instance_name`
+    /// does), which is more convenient to match with intrinsic symbols.
     fn intrinsic_name(&self, def: InstanceDef) -> Option<Symbol> {
         let tables = self.0.borrow_mut();
         let instance = tables.instances[def];