Merge pull request #19715 from eeckstein/improve-swift-demangle

Author: swift-ci

tools/swift-demangle/swift-demangle.cpp

@@ -212,7 +212,7 @@ int main(int argc, char **argv) {
   } else {
     swift::Demangle::Context DCtx;
     for (llvm::StringRef name : InputNames) {
-      if (name.startswith("S")) {
+      if (name.startswith("S") || name.startswith("s") ) {
         std::string correctedName = std::string("$") + name.str();
         demangle(llvm::outs(), correctedName, DCtx, options);
       } else {