Add anti-inlining bridge to wasm builtin executor

Author: igoriakovlev

runtime/jsMain/src/kotlinx/benchmark/js/JsBuiltInExecutor.kt

@@ -3,16 +3,13 @@ package kotlinx.benchmark.js
 import kotlinx.benchmark.*
 import kotlinx.benchmark.jsEngineSupport
 
-@JsName("Function")
-private external fun functionCtor(params: String, code: String): (dynamic) -> Long
-
 class JsBuiltInExecutor(
     name: String,
     @Suppress("UNUSED_PARAMETER") dummy_args: Array<out String>
 ) : CommonSuiteExecutor(name, jsEngineSupport.arguments()[0]) {
 
-    private val BenchmarkConfiguration.jsUseBridge: Boolean
-        get() = "true".equals(advanced["jsUseBridge"], ignoreCase = true)
+    private val BenchmarkConfiguration.notUseJsBridge: Boolean
+        get() = "false".equals(advanced["jsUseBridge"], ignoreCase = true)
 
     override fun run(
         runnerConfiguration: RunnerConfiguration,
@@ -26,16 +23,8 @@ class JsBuiltInExecutor(
         super.run(runnerConfiguration, benchmarks, start, complete)
     }
 
-    private fun createJsMeasurerBridge(originalMeasurer: () -> Long): () -> Long {
-        val bridgeObject = object {
-            fun invoke(): Long = originalMeasurer.invoke()
-        }
-        val measurerString = bridgeObject::invoke.toString()
-        val measurerBody = measurerString.substringAfter("{").substringBeforeLast("}")
-        return {
-            functionCtor("\$boundThis", measurerBody)(bridgeObject)
-        }
-    }
+    private fun createJsMeasurerBridge(originalMeasurer: () -> Long): () -> Long =
+        { originalMeasurer() }
 
     override fun <T> createIterationMeasurer(
         instance: T,
@@ -44,6 +33,6 @@ class JsBuiltInExecutor(
         cycles: Int
     ): () -> Long {
         val measurer = super.createIterationMeasurer(instance, benchmark, configuration, cycles)
-        return if (configuration.jsUseBridge) createJsMeasurerBridge(measurer) else measurer
+        return if (configuration.notUseJsBridge) measurer else createJsMeasurerBridge(measurer)
     }
 }

runtime/wasmMain/src/kotlinx/benchmark/wasm/WasmBuiltInExecutor.kt

@@ -2,7 +2,28 @@ package kotlinx.benchmark.wasm
 
 import kotlinx.benchmark.*
 
+@JsFun("(p) => p")
+private external fun id(p: Any): Any
+
 class WasmBuiltInExecutor(
     name: String,
     @Suppress("UNUSED_PARAMETER") dummy_args: Array<out String>
-) : CommonSuiteExecutor(name, jsEngineSupport.arguments()[0])
+) : CommonSuiteExecutor(name, jsEngineSupport.arguments()[0]) {
+
+    private val BenchmarkConfiguration.notUseJsBridge: Boolean
+        get() = "false".equals(advanced["jsUseBridge"], ignoreCase = true)
+
+    @Suppress("UNCHECKED_CAST")
+    private fun createJsMeasurerBridge(originalMeasurer: () -> Long): () -> Long =
+        id(originalMeasurer) as (() -> Long)
+
+    override fun <T> createIterationMeasurer(
+        instance: T,
+        benchmark: BenchmarkDescriptor<T>,
+        configuration: BenchmarkConfiguration,
+        cycles: Int
+    ): () -> Long {
+        val measurer = super.createIterationMeasurer(instance, benchmark, configuration, cycles)
+        return if (configuration.notUseJsBridge) measurer else createJsMeasurerBridge(measurer)
+    }
+}