Let getMaxLaneCount() report zero for now.

Author: fniephaus

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jdk/Target_jdk_internal_vm_vector_VectorSupport.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2023, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,7 +27,6 @@
 import com.oracle.svm.core.annotate.Delete;
 import com.oracle.svm.core.annotate.Substitute;
 import com.oracle.svm.core.annotate.TargetClass;
-import com.oracle.svm.core.util.VMError;
 
 @TargetClass(className = "jdk.internal.vm.vector.VectorSupport")
 public final class Target_jdk_internal_vm_vector_VectorSupport {
@@ -37,6 +36,10 @@ public final class Target_jdk_internal_vm_vector_VectorSupport {
     @SuppressWarnings("unused")
     @Substitute
     public static int getMaxLaneCount(Class<?> etype) {
-        throw VMError.unsupportedFeature("VectorSupport.getMaxLaneCount not supported.");
+        /*
+         * GR-51303: The Vector API is not yet optimized by the Graal compiler. But instead of
+         * letting applications fail, always return a max lane count of zero for now.
+         */
+        return 0;
     }
 }