Drop -Xrepeat flag

This flag hadn't been maintained for a long time and isn't working
properly at the moment.

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonCompilerArguments.kt

@@ -71,14 +71,6 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
     @Argument(value = "-Xno-inline", description = "Disable method inlining")
     var noInline: Boolean by FreezableVar(false)
 
-    // TODO Remove in 1.0
-    @Argument(
-            value = "-Xrepeat",
-            valueDescription = "<count>",
-            description = "Repeat compilation (for performance analysis)"
-    )
-    var repeat: String? by FreezableVar(null)
-
     @Argument(
             value = "-Xskip-metadata-version-check",
             description = "Load classes with bad metadata version anyway (incl. pre-release classes)"

compiler/cli/src/org/jetbrains/kotlin/cli/common/CLICompiler.java

@@ -82,50 +82,32 @@ public abstract class CLICompiler<A extends CommonCompilerArguments> extends CLI
                 return ExitCode.COMPILATION_ERROR;
             }
 
-            ExitCode exitCode = OK;
-
-            int repeatCount = 1;
-            String repeat = arguments.getRepeat();
-            if (repeat != null) {
-                try {
-                    repeatCount = Integer.parseInt(repeat);
-                }
-                catch (NumberFormatException ignored) {
-                }
-            }
-
             CompilationCanceledStatus canceledStatus = services.get(CompilationCanceledStatus.class);
             ProgressIndicatorAndCompilationCanceledStatus.setCompilationCanceledStatus(canceledStatus);
 
-            for (int i = 0; i < repeatCount; i++) {
-                if (i > 0) {
-                    K2JVMCompiler.Companion.resetInitStartTime();
-                }
-                Disposable rootDisposable = Disposer.newDisposable();
-                try {
-                    setIdeaIoUseFallback();
-                    ExitCode code = doExecute(arguments, configuration, rootDisposable, paths);
-                    exitCode = groupingCollector.hasErrors() ? COMPILATION_ERROR : code;
-                }
-                catch (CompilationCanceledException e) {
+            Disposable rootDisposable = Disposer.newDisposable();
+            try {
+                setIdeaIoUseFallback();
+                ExitCode code = doExecute(arguments, configuration, rootDisposable, paths);
+                return groupingCollector.hasErrors() ? COMPILATION_ERROR : code;
+            }
+            catch (CompilationCanceledException e) {
+                messageCollector.report(INFO, "Compilation was canceled", null);
+                return ExitCode.OK;
+            }
+            catch (RuntimeException e) {
+                Throwable cause = e.getCause();
+                if (cause instanceof CompilationCanceledException) {
                     messageCollector.report(INFO, "Compilation was canceled", null);
                     return ExitCode.OK;
                 }
-                catch (RuntimeException e) {
-                    Throwable cause = e.getCause();
-                    if (cause instanceof CompilationCanceledException) {
-                        messageCollector.report(INFO, "Compilation was canceled", null);
-                        return ExitCode.OK;
-                    }
-                    else {
-                        throw e;
-                    }
-                }
-                finally {
-                    Disposer.dispose(rootDisposable);
+                else {
+                    throw e;
                 }
             }
-            return exitCode;
+            finally {
+                Disposer.dispose(rootDisposable);
+            }
         }
         catch (AnalysisResult.CompilationErrorException e) {
             return COMPILATION_ERROR;

compiler/cli/src/org/jetbrains/kotlin/cli/common/CLITool.kt

@@ -24,7 +24,6 @@ import org.jetbrains.kotlin.cli.common.arguments.validateArguments
 import org.jetbrains.kotlin.cli.common.messages.*
 import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity.INFO
 import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity.STRONG_WARNING
-import org.jetbrains.kotlin.cli.jvm.K2JVMCompiler
 import org.jetbrains.kotlin.cli.jvm.compiler.CompileEnvironmentException
 import org.jetbrains.kotlin.config.KotlinCompilerVersion
 import org.jetbrains.kotlin.config.Services
@@ -44,8 +43,6 @@ abstract class CLITool<A : CommonToolArguments> {
             messageRenderer: MessageRenderer,
             args: Array<out String>
     ): ExitCode {
-        K2JVMCompiler.resetInitStartTime()
-
         val arguments = createArguments()
         parseCommandLineArguments(args.asList(), arguments)
         val collector = PrintingMessageCollector(errStream, messageRenderer, arguments.verbose)

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/K2JVMCompiler.kt

@@ -345,15 +345,6 @@ class K2JVMCompiler : CLICompiler<K2JVMCompilerArguments>() {
 
     companion object {
         private var initStartNanos = System.nanoTime()
-        // allows to track GC time for each run when repeated compilation is used
-        private val elapsedGCTime = hashMapOf<String, Long>()
-        private var elapsedJITTime = 0L
-
-        fun resetInitStartTime() {
-            if (initStartNanos == 0L) {
-                initStartNanos = System.nanoTime()
-            }
-        }
 
         @JvmStatic
         fun main(args: Array<String>) {
@@ -368,19 +359,13 @@ class K2JVMCompiler : CLICompiler<K2JVMCompilerArguments>() {
 
         fun reportGCTime(configuration: CompilerConfiguration) {
             ManagementFactory.getGarbageCollectorMXBeans().forEach {
-                val currentTime = it.collectionTime
-                val elapsedTime = elapsedGCTime.getOrElse(it.name) { 0 }
-                val time = currentTime - elapsedTime
-                reportPerf(configuration, "GC time for ${it.name} is $time ms")
-                elapsedGCTime[it.name] = currentTime
+                reportPerf(configuration, "GC time for ${it.name} is ${it.collectionTime} ms")
             }
         }
 
         fun reportCompilationTime(configuration: CompilerConfiguration) {
             val bean = ManagementFactory.getCompilationMXBean() ?: return
-            val currentTime = bean.totalCompilationTime
-            reportPerf(configuration, "JIT time is ${currentTime - elapsedJITTime} ms")
-            elapsedJITTime = currentTime
+            reportPerf(configuration, "JIT time is ${bean.totalCompilationTime} ms")
         }
 
         private fun putAdvancedOptions(configuration: CompilerConfiguration, arguments: K2JVMCompilerArguments) {

compiler/testData/cli/js/jsExtraHelp.out

@@ -17,7 +17,6 @@ where advanced options include:
   -Xplugin=<path>            Load plugins from the given classpath
   -Xproper-ieee754-comparisons Generate proper IEEE 754 comparisons in all cases if values are statically known to be of primitive numeric types
   -Xread-deserialized-contracts Enable reading of contracts from metadata
-  -Xrepeat=<count>           Repeat compilation (for performance analysis)
   -Xreport-output-files      Report source to output files mapping
   -Xskip-metadata-version-check Load classes with bad metadata version anyway (incl. pre-release classes)
   -Xuse-experimental=<fq.name> Enable usages of COMPILATION-affecting experimental API for marker annotation with the given fully qualified name

compiler/testData/cli/jvm/extraHelp.out

@@ -59,7 +59,6 @@ where advanced options include:
   -Xplugin=<path>            Load plugins from the given classpath
   -Xproper-ieee754-comparisons Generate proper IEEE 754 comparisons in all cases if values are statically known to be of primitive numeric types
   -Xread-deserialized-contracts Enable reading of contracts from metadata
-  -Xrepeat=<count>           Repeat compilation (for performance analysis)
   -Xreport-output-files      Report source to output files mapping
   -Xskip-metadata-version-check Load classes with bad metadata version anyway (incl. pre-release classes)
   -Xuse-experimental=<fq.name> Enable usages of COMPILATION-affecting experimental API for marker annotation with the given fully qualified name