Binding trace filtering: do not calculate diagnostics if no one is going to query them

compiler/backend/src/org/jetbrains/kotlin/codegen/state/GenerationState.kt

@@ -46,6 +46,7 @@ import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.psi.KtScript
 import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.BindingTrace
+import org.jetbrains.kotlin.resolve.BindingTraceFilter
 import org.jetbrains.kotlin.resolve.DelegatingBindingTrace
 import org.jetbrains.kotlin.resolve.diagnostics.Diagnostics
 import org.jetbrains.kotlin.resolve.jvm.JvmClassName
@@ -67,7 +68,8 @@ class GenerationState @JvmOverloads constructor(
         // partial compilation. Module chunks are treated as a single module.
         // TODO: get rid of it with the proper module infrastructure
         val outDirectory: File? = null,
-        private val onIndependentPartCompilationEnd: GenerationStateEventCallback = GenerationStateEventCallback.DO_NOTHING
+        private val onIndependentPartCompilationEnd: GenerationStateEventCallback = GenerationStateEventCallback.DO_NOTHING,
+        wantsDiagnostics: Boolean = true
 ) {
     abstract class GenerateClassFilter {
         abstract fun shouldAnnotateClass(processingClassOrObject: KtClassOrObject): Boolean
@@ -129,7 +131,8 @@ class GenerationState @JvmOverloads constructor(
 
     val moduleName: String = moduleName ?: JvmCodegenUtil.getModuleName(module)
     val classBuilderMode: ClassBuilderMode = builderFactory.classBuilderMode
-    val bindingTrace: BindingTrace = DelegatingBindingTrace(bindingContext, "trace in GenerationState")
+    val bindingTrace: BindingTrace = DelegatingBindingTrace(bindingContext, "trace in GenerationState",
+                                                            filter = if (wantsDiagnostics) BindingTraceFilter.ACCEPT_ALL else BindingTraceFilter.NO_DIAGNOSTICS)
     val bindingContext: BindingContext = bindingTrace.bindingContext
     val typeMapper: KotlinTypeMapper = KotlinTypeMapper(
             this.bindingContext, classBuilderMode, fileClassesProvider, incrementalCacheForThisTarget,