Configuration: Invalidate caches when changing compiler options

#KT-25515 Fixed

idea/src/org/jetbrains/kotlin/idea/compiler/configuration/KotlinCompilerConfigurableTab.java

@@ -42,6 +42,7 @@ import org.jetbrains.kotlin.idea.PluginStartupComponent;
 import org.jetbrains.kotlin.idea.core.script.settings.KotlinScriptingSettings;
 import org.jetbrains.kotlin.idea.facet.DescriptionListCellRenderer;
 import org.jetbrains.kotlin.idea.facet.KotlinFacet;
+import org.jetbrains.kotlin.idea.roots.ProjectRootUtilsKt;
 import org.jetbrains.kotlin.idea.util.application.ApplicationUtilsKt;
 
 import javax.swing.*;
@@ -489,14 +490,15 @@ public class KotlinCompilerConfigurableTab implements SearchableConfigurable, Co
             boolean shouldInvalidateCaches =
                     !getSelectedLanguageVersionView().equals(KotlinFacetSettingsKt.getLanguageVersionView(commonCompilerArguments)) ||
                     !getSelectedAPIVersionView().equals(KotlinFacetSettingsKt.getApiVersionView(commonCompilerArguments)) ||
-                    !coroutineSupportComboBox.getSelectedItem().equals(CoroutineSupport.byCompilerArguments(commonCompilerArguments));
+                    !coroutineSupportComboBox.getSelectedItem().equals(CoroutineSupport.byCompilerArguments(commonCompilerArguments)) ||
+                    !additionalArgsOptionsField.getText().equals(compilerSettings.getAdditionalArguments());
 
             if (shouldInvalidateCaches) {
                 ApplicationUtilsKt.runWriteAction(
                         new Function0<Object>() {
                             @Override
                             public Object invoke() {
-                                ProjectRootManagerEx.getInstanceEx(project).makeRootsChange(EmptyRunnable.INSTANCE, false, true);
+                                ProjectRootUtilsKt.invalidateProjectRoots(project);
                                 return null;
                             }
                         }

idea/src/org/jetbrains/kotlin/idea/quickfix/MakeModuleExperimentalFix.kt

@@ -17,6 +17,7 @@ import org.jetbrains.kotlin.idea.configuration.BuildSystemType
 import org.jetbrains.kotlin.idea.configuration.getBuildSystemType
 import org.jetbrains.kotlin.idea.facet.KotlinFacet
 import org.jetbrains.kotlin.idea.facet.getOrCreateFacet
+import org.jetbrains.kotlin.idea.roots.invalidateProjectRoots
 import org.jetbrains.kotlin.idea.util.projectStructure.module
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.psi.KtFile
@@ -44,6 +45,7 @@ class MakeModuleExperimentalFix(
 
             compilerSettings.additionalArguments += " $compilerArgument"
             facetSettings.updateMergedArguments()
+            project.invalidateProjectRoots()
         } finally {
             modelsProvider.dispose()
         }

idea/src/org/jetbrains/kotlin/idea/roots/projectRootUtils.kt

@@ -5,7 +5,10 @@
 
 package org.jetbrains.kotlin.idea.roots
 
+import com.intellij.openapi.project.Project
 import com.intellij.openapi.roots.ModifiableRootModel
+import com.intellij.openapi.roots.ex.ProjectRootManagerEx
+import com.intellij.openapi.util.EmptyRunnable
 import org.jetbrains.jps.model.JpsElement
 import org.jetbrains.jps.model.ex.JpsElementBase
 import org.jetbrains.jps.model.java.JavaResourceRootType
@@ -50,4 +53,8 @@ fun TargetPlatformKind<*>.asTargetPlatform() = when (this) {
     is TargetPlatformKind.Jvm -> JvmPlatform
     is TargetPlatformKind.JavaScript -> JsPlatform
     is TargetPlatformKind.Common -> TargetPlatform.Common
+}
+
+fun Project.invalidateProjectRoots() {
+    ProjectRootManagerEx.getInstanceEx(this).makeRootsChange(EmptyRunnable.INSTANCE, false, true)
 }