Add performance tests for elementwise multiplication

modules/core/perf/perf_arithm.cpp

@@ -202,3 +202,49 @@ PERF_TEST_P(Size_MatType, subtractScalar, TYPICAL_MATS_CORE_ARITHM)
 
     SANITY_CHECK(c, 1e-8);
 }
+
+
+PERF_TEST_P(Size_MatType, multiply, TYPICAL_MATS_CORE_ARITHM)
+{
+	Size sz = get<0>(GetParam());
+	int type = get<1>(GetParam());
+	cv::Mat a = Mat(sz, type);
+	cv::Mat b = Mat(sz, type);
+	cv::Mat c = Mat(sz, type);
+
+	declare.in(a, b, WARMUP_RNG).out(c);
+
+	if (CV_MAT_DEPTH(type) == CV_32S)
+	{
+		//According to docs, saturation is not applied when result is 32bit integer
+		a /= (2 << 16);
+		b /= (2 << 16);
+	}
+
+	TEST_CYCLE() multiply(a, b, c);
+
+	SANITY_CHECK(c, 1e-8);
+}
+
+PERF_TEST_P(Size_MatType, multiplyScale, TYPICAL_MATS_CORE_ARITHM)
+{
+	Size sz = get<0>(GetParam());
+	int type = get<1>(GetParam());
+	cv::Mat a = Mat(sz, type);
+	cv::Mat b = Mat(sz, type);
+	cv::Mat c = Mat(sz, type);
+	double scale = 0.5;
+
+	declare.in(a, b, WARMUP_RNG).out(c);
+
+	if (CV_MAT_DEPTH(type) == CV_32S)
+	{
+		//According to docs, saturation is not applied when result is 32bit integer
+		a /= (2 << 16);
+		b /= (2 << 16);
+	}
+
+	TEST_CYCLE() multiply(a, b, c, scale);
+
+	SANITY_CHECK(c, 1e-8);
+}