[ORC] Avoid SymbolStringPtr copies in DynamicLibrarySearchGenerator predicate.

Pass SymbolStringPtr by const-ref to avoid copies (which require atomic
ref-count operations).

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/include/llvm/ExecutionEngine/Orc/ExecutionUtils.h b/llvm/include/llvm/ExecutionEngine/Orc/ExecutionUtils.h
index cf0a428662e..b9bbace6f63 100644
--- a/llvm/include/llvm/ExecutionEngine/Orc/ExecutionUtils.h
+++ b/llvm/include/llvm/ExecutionEngine/Orc/ExecutionUtils.h
@@ -242,7 +242,7 @@ public:
 /// passes the 'Allow' predicate will be added to the JITDylib.
 class DynamicLibrarySearchGenerator : public JITDylib::DefinitionGenerator {
 public:
-  using SymbolPredicate = std::function<bool(SymbolStringPtr)>;
+  using SymbolPredicate = std::function<bool(const SymbolStringPtr &)>;
 
   /// Create a DynamicLibrarySearchGenerator that searches for symbols in the
   /// given sys::DynamicLibrary.