Improve performance of Span.Clear for referential T

Commit migrated from dotnet/corefx@4e3a6d0
picenka21 · Mar 6, 2018 · 10a4d23 · 10a4d23
1 parent d02b3a1
commit 10a4d23
Showing 1 changed file with 40 additions and 0 deletions.
diff --git a/src/libraries/System.Memory/tests/Performance/Perf.Span.Clear.cs b/src/libraries/System.Memory/tests/Performance/Perf.Span.Clear.cs
@@ -48,5 +48,45 @@ public void Int(int size)
                 }
             }
         }
+
+        [Benchmark]
+        [InlineData(0)]
+        [InlineData(1)]
+        [InlineData(2)]
+        [InlineData(3)]
+        [InlineData(4)]
+        [InlineData(5)]
+        [InlineData(6)]
+        [InlineData(7)]
+        [InlineData(8)]
+        [InlineData(9)]
+        [InlineData(10)]
+        [InlineData(11)]
+        [InlineData(12)]
+        [InlineData(13)]
+        [InlineData(14)]
+        [InlineData(15)]
+        [InlineData(16)]
+        [InlineData(32)]
+        [InlineData(64)]
+        [InlineData(100)]
+        [InlineData(1000)]
+        [InlineData(10000)]
+        [InlineData(100000)]
+        public void References(int size)
+        {
+            var a = new object[size];
+            var span = new Span<object>(a);
+            foreach (BenchmarkIteration iteration in Benchmark.Iterations)
+            {
+                using (iteration.StartMeasurement())
+                {
+                    for (int i = 0; i < 10000; i++)
+                    {
+                        span.Clear();
+                    }
+                }
+            }
+        }
     }
 }