1 files changed, 26 insertions, 0 deletions

diff --git a/contrib/llvm-project/llvm/lib/TextAPI/Symbol.cpp b/contrib/llvm-project/llvm/lib/TextAPI/Symbol.cpp
index 20fa6362716a..fd395436051d 100644
--- a/contrib/llvm-project/llvm/lib/TextAPI/Symbol.cpp
+++ b/contrib/llvm-project/llvm/lib/TextAPI/Symbol.cpp
@@ -72,5 +72,31 @@ bool Symbol::operator==(const Symbol &O) const {
          std::tie(O.Name, O.Kind, O.Targets, RHSFlags);
 }
 
+SimpleSymbol parseSymbol(StringRef SymName, const SymbolFlags Flags) {
+  if (SymName.starts_with(ObjC1ClassNamePrefix))
+    return {SymName.drop_front(ObjC1ClassNamePrefix.size()),
+            SymbolKind::ObjectiveCClass};
+  if (SymName.starts_with(ObjC2ClassNamePrefix))
+    return {SymName.drop_front(ObjC2ClassNamePrefix.size()),
+            SymbolKind::ObjectiveCClass};
+  if (SymName.starts_with(ObjC2MetaClassNamePrefix))
+    return {SymName.drop_front(ObjC2MetaClassNamePrefix.size()),
+            SymbolKind::ObjectiveCClass};
+  if (SymName.starts_with(ObjC2EHTypePrefix)) {
+    // When classes without ehtype are used in try/catch blocks
+    // a weak-defined symbol is exported. In those cases, treat these as a
+    // global instead.
+    if ((Flags & SymbolFlags::WeakDefined) == SymbolFlags::WeakDefined)
+      return {SymName, SymbolKind::GlobalSymbol};
+    return {SymName.drop_front(ObjC2EHTypePrefix.size()),
+            SymbolKind::ObjectiveCClassEHType};
+  }
+
+  if (SymName.starts_with(ObjC2IVarPrefix))
+    return {SymName.drop_front(ObjC2IVarPrefix.size()),
+            SymbolKind::ObjectiveCInstanceVariable};
+  return {SymName, SymbolKind::GlobalSymbol};
+}
+
 } // end namespace MachO.
 } // end namespace llvm.