Add some performance tests for fast backtracing.
diff --git a/tests/Lperf-trace.c b/tests/Lperf-trace.c
new file mode 100644
index 0000000..1c3cf21
--- /dev/null
+++ b/tests/Lperf-trace.c
@@ -0,0 +1,5 @@
+#define UNW_LOCAL_ONLY
+#include <libunwind.h>
+#if !defined(UNW_REMOTE_ONLY)
+#include "Gperf-trace.c"
+#endif