--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.amd64/src/org/graalvm/compiler/core/amd64/AMD64LIRGenerator.java	Wed Oct 09 19:38:11 2019 -0700
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.amd64/src/org/graalvm/compiler/core/amd64/AMD64LIRGenerator.java	Wed Oct 09 21:53:48 2019 -0700
@@ -687,7 +687,7 @@
     }
 
     @Override
-    public void emitZeroMemory(Value address, Value length) {
+    public void emitZeroMemory(Value address, Value length, boolean isAligned) {
         RegisterValue lengthReg = AMD64.rcx.asValue(length.getValueKind());
         emitMove(lengthReg, length);
         append(new AMD64ZeroMemoryOp(asAddressValue(address), lengthReg));