[GR-70726] Enable replay launcher by default.

compiler/docs/ReplayCompilation.md

@@ -65,18 +65,12 @@ Any `-ea`, `-esa`, and `-X` arguments from the command line are passed to the JV
 
 Jargraal can replay both jargraal and libgraal compilations. Libgraal can replay only libgraal compilations.
 
-It is necessary to explicitly enable the replay launcher entry point when building libgraal using the VM argument
-`-Ddebug.jdk.graal.enableReplayLauncher=true`.
-
-```shell
-EXTRA_IMAGE_BUILDER_ARGUMENTS=-Ddebug.jdk.graal.enableReplayLauncher=true mx --env libgraal build
-```
-
-When the `--libgraal` argument is passed to `mx replaycomp`, the previously built libgraal native library is loaded, and
-the native launcher is invoked instead of the Java launcher. With the below command, all replay related processing
-(including JSON parsing) is performed by libgraal code.
+To replay on libgraal, build libgraal first. Then, pass the `--libgraal` argument to `mx replaycomp`, which invokes the
+native launcher. With the below commands, all replay related processing (including JSON parsing) is performed by
+libgraal code.
 
 ```shell
+mx -p ../vm --env libgraal build
 mx replaycomp --libgraal ./replay-files
 ```
 

compiler/src/jdk.graal.compiler.libgraal/src/jdk/graal/compiler/libgraal/LibGraalEntryPoints.java

@@ -31,7 +31,6 @@
 import java.io.PrintStream;
 import java.util.Arrays;
 import java.util.Map;
-import java.util.function.BooleanSupplier;
 
 import org.graalvm.collections.EconomicMap;
 import org.graalvm.jniutils.JNI.JNIEnv;
@@ -54,7 +53,6 @@
 import jdk.graal.compiler.hotspot.HotSpotGraalServices;
 import jdk.graal.compiler.hotspot.ProfileReplaySupport;
 import jdk.graal.compiler.hotspot.replaycomp.ReplayCompilationRunner;
-import jdk.graal.compiler.hotspot.replaycomp.ReplayCompilationSupport;
 import jdk.graal.compiler.options.OptionDescriptors;
 import jdk.graal.compiler.options.OptionKey;
 import jdk.graal.compiler.options.OptionValues;
@@ -301,7 +299,7 @@ private static long hashConstantOopFields(JNIEnv jniEnv,
      * @return the exit status of the replay compilation launcher
      */
     @SuppressWarnings({"unused", "try"})
-    @CEntryPoint(name = "Java_jdk_graal_compiler_hotspot_replaycomp_test_ReplayCompilationLauncher_runInLibgraal", include = LibGraalReplayLauncherEnabled.class)
+    @CEntryPoint(name = "Java_jdk_graal_compiler_hotspot_replaycomp_test_ReplayCompilationLauncher_runInLibgraal", include = LibGraalFeature.IsEnabled.class)
     private static int replayCompilation(JNIEnv jniEnv,
                     PointerBase jclass,
                     @IsolateThreadContext long isolateThread,
@@ -322,14 +320,4 @@ private static int replayCompilation(JNIEnv jniEnv,
             LibGraalSupportImpl.doReferenceHandling();
         }
     }
-
-    /**
-     * Controls whether the replay launcher entry point should be included in libgraal.
-     */
-    private static final class LibGraalReplayLauncherEnabled implements BooleanSupplier {
-        @Override
-        public boolean getAsBoolean() {
-            return new LibGraalFeature.IsEnabled().getAsBoolean() && ReplayCompilationSupport.ENABLE_REPLAY_LAUNCHER;
-        }
-    }
 }

compiler/src/jdk.graal.compiler.test/src/jdk/graal/compiler/hotspot/replaycomp/test/ReplayCompilationLauncher.java

@@ -31,7 +31,6 @@
 
 import jdk.graal.compiler.api.test.ModuleSupport;
 import jdk.graal.compiler.hotspot.replaycomp.ReplayCompilationRunner;
-import jdk.graal.compiler.hotspot.replaycomp.ReplayCompilationSupport;
 import jdk.graal.compiler.hotspot.test.LibGraalCompilationDriver;
 
 /**
@@ -55,13 +54,7 @@ public class ReplayCompilationLauncher {
 
     public static void main(String[] args) {
         if (LibGraal.isAvailable()) {
-            try {
-                LibGraal.registerNativeMethods(ReplayCompilationLauncher.class);
-            } catch (Error error) {
-                System.err.printf("The replay launcher entry point could not be linked. Build libgraal with -D%s=true as an extra image builder option to enable the launcher.%n",
-                                ReplayCompilationSupport.ENABLE_REPLAY_LAUNCHER_PROP);
-                throw error;
-            }
+            LibGraal.registerNativeMethods(ReplayCompilationLauncher.class);
             StringBuilder argString = new StringBuilder();
             for (String arg : args) {
                 if (!argString.isEmpty()) {

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/hotspot/replaycomp/ReplayCompilationProxies.java

@@ -35,7 +35,6 @@
 import org.graalvm.collections.EconomicMap;
 import org.graalvm.collections.Equivalence;
 
-import jdk.graal.compiler.core.common.LibGraalSupport;
 import jdk.graal.compiler.debug.DebugCloseable;
 import jdk.graal.compiler.debug.DebugContext;
 import jdk.graal.compiler.debug.GlobalMetrics;
@@ -77,7 +76,6 @@
  *
  * @see ReplayCompilationSupport
  */
-@LibGraalSupport.HostedOnly(unlessTrue = ReplayCompilationSupport.ENABLE_REPLAY_LAUNCHER_PROP)
 public class ReplayCompilationProxies implements CompilationProxies {
     public static class Options {
         // @formatter:off

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/hotspot/replaycomp/ReplayCompilationRunner.java

@@ -66,15 +66,12 @@
 import jdk.vm.ci.hotspot.HotSpotCompilationRequest;
 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;
 
-//JaCoCo Exclude
-
 /**
  * The entry point for running replay compilations in jargraal and libgraal.
  *
  * @see ReplayCompilationSupport
  * @see CompilerInterfaceDeclarations
  */
-@LibGraalSupport.HostedOnly(unlessTrue = ReplayCompilationSupport.ENABLE_REPLAY_LAUNCHER_PROP)
 public class ReplayCompilationRunner {
     /**
      * The exit status of a replay compilation run.

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/hotspot/replaycomp/ReplayCompilationSupport.java

@@ -47,7 +47,6 @@
 import jdk.graal.compiler.options.OptionValues;
 import jdk.graal.compiler.printer.CanonicalStringGraphPrinter;
 import jdk.graal.compiler.replacements.SnippetTemplate;
-import jdk.graal.compiler.serviceprovider.GraalServices;
 import jdk.graal.compiler.util.json.JsonWriter;
 import jdk.vm.ci.hotspot.HotSpotCompilationRequest;
 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;
@@ -104,16 +103,6 @@
  * replay is close to the code compiled during recording.
  */
 public final class ReplayCompilationSupport {
-    /**
-     * Libgraal build-time system property name for enabling the replay compilation launcher.
-     */
-    public static final String ENABLE_REPLAY_LAUNCHER_PROP = "debug.jdk.graal.enableReplayLauncher";
-
-    /**
-     * Whether the replay compilation launcher is enabled in libgraal.
-     */
-    public static final boolean ENABLE_REPLAY_LAUNCHER = Boolean.parseBoolean(GraalServices.getSavedProperty(ENABLE_REPLAY_LAUNCHER_PROP));
-
     /**
      * Checks whether the given method's compilation should be recorded according to the given
      * options.