make use of Platforms annotation to mark hosted-only code

Author: dougxc

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/hotspot/HotSpotReplacementsImpl.java

@@ -64,6 +64,8 @@
 import jdk.vm.ci.meta.MetaAccessProvider;
 import jdk.vm.ci.meta.ResolvedJavaMethod;
 import jdk.vm.ci.meta.ResolvedJavaType;
+import org.graalvm.nativeimage.Platform;
+import org.graalvm.nativeimage.Platforms;
 
 /**
  * Filters certain method substitutions based on whether there is underlying hardware support for
@@ -274,6 +276,7 @@ public <T> T getInjectedArgument(Class<T> capability) {
         return super.getInjectedArgument(capability);
     }
 
+    @Platforms(Platform.HOSTED_ONLY.class)
     public ResolvedJavaMethod findSnippetMethod(ResolvedJavaMethod thisMethod) {
         if (snippetEncoder == null) {
             throw new GraalError("findSnippetMethod called before initialization of Replacements");

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/hotspot/libgraal/BuildTime.java

@@ -59,13 +59,16 @@
 import jdk.vm.ci.hotspot.HotSpotJVMCIBackendFactory;
 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;
 import jdk.vm.ci.services.JVMCIServiceLocator;
+import org.graalvm.nativeimage.Platform;
+import org.graalvm.nativeimage.Platforms;
 
 /**
  * This class is used at image build-time when a libgraal image gets built. Its static methods are
  * called from {@code com.oracle.svm.graal.hotspot.libgraal.LibGraalFeature} before static analysis.
  * These methods ensure the static field state of Graal and JVMCI classes loaded by the
  * LibGraalClassLoader is set up correctly for getting built into libgraal.
  */
+@Platforms(Platform.HOSTED_ONLY.class)
 public class BuildTime {
 
     private static final String VALID_LOADER_NAME = "LibGraalClassLoader";

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/hotspot/libgraal/truffle/BuildTime.java

@@ -27,6 +27,8 @@
 import com.oracle.truffle.compiler.hotspot.libgraal.TruffleFromLibGraal.Id;
 import jdk.graal.compiler.truffle.host.TruffleHostEnvironment;
 import org.graalvm.nativeimage.ImageInfo;
+import org.graalvm.nativeimage.Platform;
+import org.graalvm.nativeimage.Platforms;
 
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
@@ -45,6 +47,7 @@
 /**
  * Class used to initialize the Truffle extensions to the Graal compiler in the image build time.
  */
+@Platforms(Platform.HOSTED_ONLY.class)
 public class BuildTime {
 
     private static Lookup hostLookup;

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/serviceprovider/GraalServices.java

@@ -44,6 +44,8 @@
 import jdk.vm.ci.runtime.JVMCI;
 import jdk.vm.ci.services.Services;
 import org.graalvm.nativeimage.ImageInfo;
+import org.graalvm.nativeimage.Platform;
+import org.graalvm.nativeimage.Platforms;
 
 /**
  * Interface to functionality that abstracts over which JDK version Graal is running on.
@@ -75,6 +77,7 @@ public static boolean isInLibgraal() {
      */
     private static Map<Class<?>, List<?>> libgraalServices;
 
+    @Platforms(Platform.HOSTED_ONLY.class)
     @ExcludeFromJacocoGeneratedReport("only called when building libgraal")
     public static void setLibgraalServices(Map<Class<?>, List<?>> services) {
         GraalError.guarantee(libgraalServices == null, "Libgraal services must be set exactly once");