src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotJVMCIRuntime.java

@@ -30,10 +30,11 @@
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
+import java.util.ServiceLoader;
 import java.util.TreeMap;
 
 import jdk.internal.misc.VM;
 import jdk.vm.ci.code.Architecture;
 import jdk.vm.ci.code.CompilationRequestResult;

@@ -48,11 +49,10 @@
 import jdk.vm.ci.runtime.JVMCI;
 import jdk.vm.ci.runtime.JVMCIBackend;
 import jdk.vm.ci.runtime.JVMCICompiler;
 import jdk.vm.ci.runtime.JVMCICompilerFactory;
 import jdk.vm.ci.services.JVMCIServiceLocator;
-import jdk.vm.ci.services.Services;
 
 /**
  * HotSpot implementation of a JVMCI runtime.
  *
  * The initialization of this class is very fragile since it's initialized both through

@@ -86,11 +86,14 @@
     /**
      * A list of all supported JVMCI options.
      */
     public enum Option {
         // @formatter:off
-        Compiler(String.class, null, "Selects the system compiler."),
+        Compiler(String.class, null, "Selects the system compiler. This must match the getCompilerName() value returned " +
+                                     "by a jdk.vm.ci.runtime.JVMCICompilerFactory provider. " +
+                                     "An empty string or the value \"null\" selects a compiler " +
+                                     "that will raise an exception upon receiving a compilation request."),
         // Note: The following one is not used (see InitTimer.ENABLED). It is added here
         // so that -XX:+JVMCIPrintProperties shows the option.
         InitTimer(Boolean.class, false, "Specifies if initialization timing is enabled."),
         PrintConfig(Boolean.class, false, "Prints VM configuration available via JVMCI."),
         TraceMethodDataFilter(String.class, null,

@@ -206,11 +209,11 @@
             }
         }
     }
 
     public static HotSpotJVMCIBackendFactory findFactory(String architecture) {
-        for (HotSpotJVMCIBackendFactory factory : Services.load(HotSpotJVMCIBackendFactory.class)) {
+        for (HotSpotJVMCIBackendFactory factory : ServiceLoader.load(HotSpotJVMCIBackendFactory.class, ClassLoader.getSystemClassLoader())) {
             if (factory.getArchitecture().equalsIgnoreCase(architecture)) {
                 return factory;
             }
         }