Adding smart_ptr benchmark
Initial draft here:
https://reviews.llvm.org/D22470
... though this is Eric Fiselier's rewrite to fit in with Google
Benchmark.
llvm-svn: 277373
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: adb6d28b0f5e6d7a89e77208724a7a5baee438b7
diff --git a/benchmarks/util_smartptr.bench.cpp b/benchmarks/util_smartptr.bench.cpp
new file mode 100644
index 0000000..3b27d78
--- /dev/null
+++ b/benchmarks/util_smartptr.bench.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include <memory>
+
+#include "benchmark/benchmark_api.h"
+
+static void BM_SharedPtrCreateDestroy(benchmark::State& st) {
+ while (st.KeepRunning()) {
+ auto sp = std::make_shared<int>(42);
+ benchmark::DoNotOptimize(sp.get());
+ }
+}
+BENCHMARK(BM_SharedPtrCreateDestroy);
+
+static void BM_SharedPtrIncDecRef(benchmark::State& st) {
+ auto sp = std::make_shared<int>(42);
+ benchmark::DoNotOptimize(sp.get());
+ while (st.KeepRunning()) {
+ std::shared_ptr<int> sp2(sp);
+ benchmark::ClobberMemory();
+ }
+}
+BENCHMARK(BM_SharedPtrIncDecRef);
+
+static void BM_WeakPtrIncDecRef(benchmark::State& st) {
+ auto sp = std::make_shared<int>(42);
+ benchmark::DoNotOptimize(sp.get());
+ while (st.KeepRunning()) {
+ std::weak_ptr<int> wp(sp);
+ benchmark::ClobberMemory();
+ }
+}
+BENCHMARK(BM_WeakPtrIncDecRef);
+
+BENCHMARK_MAIN()