src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.amd64/src/org/graalvm/compiler/hotspot/amd64/AMD64ArrayEqualsStub.java

@@ -29,10 +29,11 @@
 import org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage;
 import org.graalvm.compiler.hotspot.meta.HotSpotProviders;
 import org.graalvm.compiler.hotspot.stubs.SnippetStub;
 import org.graalvm.compiler.options.OptionValues;
 import org.graalvm.compiler.replacements.nodes.ArrayEqualsNode;
+import org.graalvm.compiler.replacements.nodes.ArrayRegionEqualsNode;
 import jdk.internal.vm.compiler.word.Pointer;
 
 import jdk.vm.ci.meta.JavaKind;
 
 public final class AMD64ArrayEqualsStub extends SnippetStub {

@@ -52,10 +53,17 @@
     public static final ForeignCallDescriptor STUB_FLOAT_ARRAY_EQUALS = new ForeignCallDescriptor(
                     "floatArraysEquals", boolean.class, Pointer.class, Pointer.class, int.class);
     public static final ForeignCallDescriptor STUB_DOUBLE_ARRAY_EQUALS = new ForeignCallDescriptor(
                     "doubleArraysEquals", boolean.class, Pointer.class, Pointer.class, int.class);
 
+    public static final ForeignCallDescriptor STUB_BYTE_ARRAY_EQUALS_DIRECT = new ForeignCallDescriptor(
+                    "byteArraysEqualsDirect", boolean.class, Pointer.class, Pointer.class, int.class);
+    public static final ForeignCallDescriptor STUB_CHAR_ARRAY_EQUALS_DIRECT = new ForeignCallDescriptor(
+                    "charArraysEqualsDirect", boolean.class, Pointer.class, Pointer.class, int.class);
+    public static final ForeignCallDescriptor STUB_CHAR_ARRAY_EQUALS_BYTE_ARRAY = new ForeignCallDescriptor(
+                    "charArrayEqualsByteArray", boolean.class, Pointer.class, Pointer.class, int.class);
+
     public AMD64ArrayEqualsStub(ForeignCallDescriptor foreignCallDescriptor, OptionValues options, HotSpotProviders providers, HotSpotForeignCallLinkage linkage) {
         super(foreignCallDescriptor.getName(), options, providers, linkage);
     }
 
     @Snippet

@@ -95,6 +103,21 @@
 
     @Snippet
     private static boolean doubleArraysEquals(Pointer array1, Pointer array2, int length) {
         return ArrayEqualsNode.equals(array1, array2, length, JavaKind.Double);
     }
+
+    @Snippet
+    private static boolean byteArraysEqualsDirect(Pointer array1, Pointer array2, int length) {
+        return ArrayRegionEqualsNode.regionEquals(array1, array2, length, JavaKind.Byte, JavaKind.Byte);
+    }
+
+    @Snippet
+    private static boolean charArraysEqualsDirect(Pointer array1, Pointer array2, int length) {
+        return ArrayRegionEqualsNode.regionEquals(array1, array2, length, JavaKind.Char, JavaKind.Char);
+    }
+
+    @Snippet
+    private static boolean charArrayEqualsByteArray(Pointer array1, Pointer array2, int length) {
+        return ArrayRegionEqualsNode.regionEquals(array1, array2, length, JavaKind.Char, JavaKind.Byte);
+    }
 }