src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/JVMCIVersionCheck.java

*** 36,50 ****
   * This class only depends on the JDK so that it can be used without building Graal.
   */
  class JVMCIVersionCheck {
  
      private static final int JVMCI8_MIN_MAJOR_VERSION = 0;
!     private static final int JVMCI8_MIN_MINOR_VERSION = 26;
  
      // MAX_VALUE indicates that no current EA version is compatible with Graal.
      // Note: Keep README.md in sync with the EA version support checked here.
!     private static final int JVMCI9_MIN_EA_BUILD = 174;
  
      private static void failVersionCheck(boolean exit, String reason, Object... args) {
          Formatter errorMessage = new Formatter().format(reason, args);
          String javaHome = System.getProperty("java.home");
          String vmName = System.getProperty("java.vm.name");
--- 36,50 ----
   * This class only depends on the JDK so that it can be used without building Graal.
   */
  class JVMCIVersionCheck {
  
      private static final int JVMCI8_MIN_MAJOR_VERSION = 0;
!     private static final int JVMCI8_MIN_MINOR_VERSION = 29;
  
      // MAX_VALUE indicates that no current EA version is compatible with Graal.
      // Note: Keep README.md in sync with the EA version support checked here.
!     private static final int JVMCI9_MIN_EA_BUILD = 176;
  
      private static void failVersionCheck(boolean exit, String reason, Object... args) {
          Formatter errorMessage = new Formatter().format(reason, args);
          String javaHome = System.getProperty("java.home");
          String vmName = System.getProperty("java.vm.name");
*** 110,130 ****
              }
              failVersionCheck(exitOnFailure, "The VM does not support the minimum JVMCI API version required by Graal.%n" +
                              "Cannot read JVMCI version from java.vm.version property: %s.%n", vmVersion);
          } else {
              if (vmVersion.contains("SNAPSHOT")) {
!                 // The snapshot of http://hg.openjdk.java.net/jdk9/hs tip is expected to work
                  return;
              }
              if (vmVersion.contains("internal")) {
                  // Allow local builds
                  return;
              }
              // http://openjdk.java.net/jeps/223
!             // Only support EA builds until GA is available
!             if (vmVersion.startsWith("9-ea+")) {
!                 int start = "9-ea+".length();
                  int end = start;
                  end = start;
                  while (end < vmVersion.length() && Character.isDigit(vmVersion.charAt(end))) {
                      end++;
                  }
--- 110,129 ----
              }
              failVersionCheck(exitOnFailure, "The VM does not support the minimum JVMCI API version required by Graal.%n" +
                              "Cannot read JVMCI version from java.vm.version property: %s.%n", vmVersion);
          } else {
              if (vmVersion.contains("SNAPSHOT")) {
!                 // The snapshot of http://hg.openjdk.java.net/jdk9/dev tip is expected to work
                  return;
              }
              if (vmVersion.contains("internal")) {
                  // Allow local builds
                  return;
              }
              // http://openjdk.java.net/jeps/223
!             if (vmVersion.startsWith("9+")) {
!                 int start = "9+".length();
                  int end = start;
                  end = start;
                  while (end < vmVersion.length() && Character.isDigit(vmVersion.charAt(end))) {
                      end++;
                  }
*** 143,155 ****
                      failVersionCheck(exitOnFailure, "This version of Graal is not compatible with any JDK 9 Early Access build.%n");
                  } else {
                      failVersionCheck(exitOnFailure, "The VM is an insufficiently recent EA JDK9 build for Graal: %d < %d.%n", build, JVMCI9_MIN_EA_BUILD);
                  }
                  return;
              }
-             failVersionCheck(exitOnFailure, "The VM does not support the minimum JVMCI API version required by Graal.%n" +
-                             "Cannot read JDK9 EA build number from java.vm.version property: %s.%n", vmVersion);
          }
      }
  
      /**
       * Command line interface for performing the check.
--- 142,155 ----
                      failVersionCheck(exitOnFailure, "This version of Graal is not compatible with any JDK 9 Early Access build.%n");
                  } else {
                      failVersionCheck(exitOnFailure, "The VM is an insufficiently recent EA JDK9 build for Graal: %d < %d.%n", build, JVMCI9_MIN_EA_BUILD);
                  }
                  return;
+             } else {
+                 // Graal will be compatible with all JDK versions as of 9 GA
+                 // until a JVMCI API change is made in a 9u or later release.
              }
          }
      }
  
      /**
       * Command line interface for performing the check.