[llvm-exegesis] Fix build with !HAS_LIBPFM.

Fixes 9fb871866e2b.

diff --git a/llvm/tools/llvm-exegesis/lib/PerfHelper.cpp b/llvm/tools/llvm-exegesis/lib/PerfHelper.cpp
index 59c66ab..c36bd5c 100644 (file)
--- a/llvm/tools/llvm-exegesis/lib/PerfHelper.cpp
+++ b/llvm/tools/llvm-exegesis/lib/PerfHelper.cpp
@@ -122,7 +122,7 @@ int64_t Counter::read() const {
 
 #else
 
-Counter::Counter(const PerfEvent &Event) {}
+Counter::Counter(PerfEvent &&Event) : Event(std::move(Event)) {}
 
 Counter::~Counter() = default;