[IC] Allow to not specify the modules info

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/compilerRunner/GradleKotlinCompilerRunner.kt

@@ -397,7 +397,6 @@ internal open class GradleCompilerRunner(
             }
 
             return IncrementalModuleInfo(
-                projectRoot = gradle.rootProject.projectDir,
                 rootProjectBuildDir = gradle.rootProject.buildDir,
                 dirToModule = dirToModule,
                 nameToModules = nameToModules,

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/compilerRunner/GradleKotlinCompilerWork.kt

@@ -330,6 +330,7 @@ internal class GradleKotlinCompilerWork @Inject constructor(
             outputFiles = outputFiles,
             multiModuleICSettings = icEnv.multiModuleICSettings,
             modulesInfo = incrementalModuleInfo!!,
+            rootProjectDir = icEnv.rootProjectDir,
             kotlinScriptExtensions = kotlinScriptExtensions,
             withAbiSnapshot = icEnv.withAbiSnapshot,
             preciseCompilationResultsBackup = icEnv.preciseCompilationResultsBackup,

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/compilerRunner/IncrementalCompilationEnvironment.kt

@@ -15,6 +15,7 @@ internal class IncrementalCompilationEnvironment(
     val changedFiles: ChangedFiles,
     val classpathChanges: ClasspathChanges,
     val workingDir: File,
+    val rootProjectDir: File,
     val usePreciseJavaTracking: Boolean = false,
     val disableMultiModuleIC: Boolean = false,
     val multiModuleICSettings: MultiModuleICSettings,

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/tasks/Kotlin2JsCompile.kt

@@ -328,6 +328,7 @@ abstract class Kotlin2JsCompile @Inject constructor(
                 getChangedFiles(inputChanges, incrementalProps),
                 ClasspathChanges.NotAvailableForJSCompiler,
                 taskBuildCacheableOutputDirectory.get().asFile,
+                projectRootDir,
                 multiModuleICSettings = multiModuleICSettings,
                 preciseCompilationResultsBackup = preciseCompilationResultsBackup.get(),
                 keepIncrementalCompilationCachesInMemory = keepIncrementalCompilationCachesInMemory.get(),

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/tasks/KotlinCompile.kt

@@ -302,6 +302,8 @@ abstract class KotlinCompile @Inject constructor(
         }
     }
 
+    private val projectRootDir = project.rootDir
+
     override fun callCompilerAsync(
         args: K2JVMCompilerArguments,
         inputChanges: InputChanges,
@@ -323,6 +325,7 @@ abstract class KotlinCompile @Inject constructor(
                 changedFiles = getChangedFiles(inputChanges, incrementalProps),
                 classpathChanges = getClasspathChanges(inputChanges),
                 workingDir = taskBuildCacheableOutputDirectory.get().asFile,
+                rootProjectDir = projectRootDir,
                 usePreciseJavaTracking = usePreciseJavaTracking,
                 disableMultiModuleIC = disableMultiModuleIC,
                 multiModuleICSettings = multiModuleICSettings,