VM optimizations

lynglib/src/commonTest/kotlin/RepresentativeBenchmarkTest.kt

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+import kotlinx.coroutines.test.runTest
+import net.sergeych.lyng.Benchmarks
+import net.sergeych.lyng.Script
+import net.sergeych.lyng.obj.ObjInt
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.time.TimeSource
+
+class RepresentativeBenchmarkTest {
+    @Test
+    fun benchmarkMixedOps() = runTest {
+        if (!Benchmarks.enabled) return@runTest
+        val iterations = 40000
+        val script = """
+            fun mixedBench(n) {
+                var acc = 0
+                var len = 0
+                val list = [1,2,3,4,5,6,7,8]
+                val map = {"a":1, "b":2, "c":3}
+                fun bump(x) { x + 1 }
+                var i = 0
+                while(i < n) {
+                    acc += i
+                    acc += bump(i)
+                    if( i % 2 == 0 ) acc += 3 else acc -= 1
+                    acc += list[i % 8]
+                    acc += map["a"]
+                    if( i % 7 == 0 ) len += 1
+                    if( i % 11 == 0 ) len += 1
+                    i++
+                }
+                acc + len
+            }
+        """.trimIndent()
+
+        val scope = Script.newScope()
+        scope.eval(script)
+        val expected = expectedValue(iterations)
+
+        val start = TimeSource.Monotonic.markNow()
+        val result = scope.eval("mixedBench($iterations)") as ObjInt
+        val elapsedMs = start.elapsedNow().inWholeMilliseconds
+        println("[DEBUG_LOG] [BENCH] mixed-ops elapsed=${elapsedMs} ms")
+        assertEquals(expected, result.value)
+    }
+
+    private fun expectedValue(iterations: Int): Long {
+        val list = intArrayOf(1, 2, 3, 4, 5, 6, 7, 8)
+        var acc = 0L
+        var len = 0L
+        for (i in 0 until iterations) {
+            acc += i
+            acc += i + 1L
+            if (i % 2 == 0) acc += 3 else acc -= 1
+            acc += list[i % list.size]
+            acc += 1
+            if (i % 7 == 0) len += 1
+            if (i % 11 == 0) len += 1
+        }
+        return acc + len
+    }
+}