--- /dev/null	2017-11-16 08:17:56.803999947 +0100
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/DigestBaseSubstitutions.java	2019-03-09 03:58:00.429472830 +0100
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2019, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+package org.graalvm.compiler.hotspot.replacements;
+
+import static org.graalvm.compiler.hotspot.GraalHotSpotVMConfig.INJECTED_METAACCESS;
+import static org.graalvm.compiler.hotspot.GraalHotSpotVMConfigBase.INJECTED_INTRINSIC_CONTEXT;
+import static org.graalvm.compiler.hotspot.GraalHotSpotVMConfigBase.INJECTED_VMCONFIG;
+import static org.graalvm.compiler.nodes.java.InstanceOfNode.doInstanceof;
+
+import org.graalvm.compiler.api.replacements.ClassSubstitution;
+import org.graalvm.compiler.api.replacements.Fold;
+import org.graalvm.compiler.api.replacements.MethodSubstitution;
+import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;
+import org.graalvm.compiler.hotspot.HotSpotBackend;
+import org.graalvm.compiler.nodes.ComputeObjectAddressNode;
+import org.graalvm.compiler.nodes.PiNode;
+import org.graalvm.compiler.nodes.extended.RawLoadNode;
+import org.graalvm.compiler.replacements.ReplacementsUtil;
+import org.graalvm.compiler.word.Word;
+import jdk.internal.vm.compiler.word.LocationIdentity;
+import jdk.internal.vm.compiler.word.WordFactory;
+
+import jdk.vm.ci.meta.JavaKind;
+import jdk.vm.ci.meta.ResolvedJavaType;
+
+@ClassSubstitution(className = "sun.security.provider.DigestBase", optional = true)
+public class DigestBaseSubstitutions {
+
+    @MethodSubstitution(isStatic = false)
+    static int implCompressMultiBlock0(Object receiver, byte[] buf, int ofs, int limit) {
+        Object realReceiver = PiNode.piCastNonNull(receiver, HotSpotReplacementsUtil.methodHolderClass(INJECTED_INTRINSIC_CONTEXT));
+        ResolvedJavaType sha1type = HotSpotReplacementsUtil.getType(INJECTED_INTRINSIC_CONTEXT, "Lsun/security/provider/SHA;");
+        ResolvedJavaType sha256type = HotSpotReplacementsUtil.getType(INJECTED_INTRINSIC_CONTEXT, "Lsun/security/provider/SHA2;");
+        ResolvedJavaType sha512type = HotSpotReplacementsUtil.getType(INJECTED_INTRINSIC_CONTEXT, "Lsun/security/provider/SHA5;");
+
+        Word bufAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(buf, ReplacementsUtil.getArrayBaseOffset(INJECTED_METAACCESS, JavaKind.Byte) + ofs));
+        if (useSHA1Intrinsics(INJECTED_VMCONFIG) && doInstanceof(sha1type, realReceiver)) {
+            Object sha1obj = PiNode.piCastNonNull(realReceiver, sha1type);
+            Object state = RawLoadNode.load(sha1obj, HotSpotReplacementsUtil.getFieldOffset(sha1type, "state"), JavaKind.Object, LocationIdentity.any());
+            Word stateAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(state, ReplacementsUtil.getArrayBaseOffset(INJECTED_METAACCESS, JavaKind.Int)));
+            return HotSpotBackend.shaImplCompressMBStub(bufAddr, stateAddr, ofs, limit);
+        } else if (useSHA256Intrinsics(INJECTED_VMCONFIG) && doInstanceof(sha256type, realReceiver)) {
+            Object sha256obj = PiNode.piCastNonNull(realReceiver, sha256type);
+            Object state = RawLoadNode.load(sha256obj, HotSpotReplacementsUtil.getFieldOffset(sha256type, "state"), JavaKind.Object, LocationIdentity.any());
+            Word stateAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(state, ReplacementsUtil.getArrayBaseOffset(INJECTED_METAACCESS, JavaKind.Int)));
+            return HotSpotBackend.sha2ImplCompressMBStub(bufAddr, stateAddr, ofs, limit);
+        } else if (useSHA512Intrinsics(INJECTED_VMCONFIG) && doInstanceof(sha512type, realReceiver)) {
+            Object sha512obj = PiNode.piCastNonNull(realReceiver, sha512type);
+            Object state = RawLoadNode.load(sha512obj, HotSpotReplacementsUtil.getFieldOffset(sha512type, "state"), JavaKind.Object, LocationIdentity.any());
+            Word stateAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(state, ReplacementsUtil.getArrayBaseOffset(INJECTED_METAACCESS, JavaKind.Int)));
+            return HotSpotBackend.sha5ImplCompressMBStub(bufAddr, stateAddr, ofs, limit);
+        } else {
+            return implCompressMultiBlock0(realReceiver, buf, ofs, limit);
+        }
+    }
+
+    @Fold
+    public static boolean useSHA1Intrinsics(@Fold.InjectedParameter GraalHotSpotVMConfig config) {
+        return config.useSHA1Intrinsics();
+    }
+
+    @Fold
+    public static boolean useSHA256Intrinsics(@Fold.InjectedParameter GraalHotSpotVMConfig config) {
+        return config.useSHA256Intrinsics();
+    }
+
+    @Fold
+    public static boolean useSHA512Intrinsics(@Fold.InjectedParameter GraalHotSpotVMConfig config) {
+        return config.useSHA512Intrinsics();
+    }
+}