Исходники и презентации

lessons/slices_and_arrays/bce_optimization_1/bench_test.go

@@ -0,0 +1,35 @@
+package main
+
+import "testing"
+
+// go test -gcflags="-d=ssa/check_bce" -bench=. bench_test.go
+
+func sum1(values []int) int {
+	return values[0] + // Found IsInBounds
+		values[1] + // Found IsInBounds
+		values[2] + // Found IsInBounds
+		values[3] // Found IsInBounds
+}
+
+func sum2(values []int) int {
+	return values[3] + // Found IsInBounds
+		values[2] +
+		values[1] +
+		values[0]
+}
+
+var Result int
+
+func BenchmarkSum1(b *testing.B) {
+	values := []int{1, 2, 3, 4}
+	for i := 0; i < b.N; i++ {
+		Result = sum1(values)
+	}
+}
+
+func BenchmarkSum2(b *testing.B) {
+	values := []int{1, 2, 3, 4}
+	for i := 0; i < b.N; i++ {
+		Result = sum2(values)
+	}
+}