--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.aarch64/src/org/graalvm/compiler/hotspot/aarch64/AArch64HotSpotLIRGenerator.java	2017-07-07 09:30:00.000000000 -0700
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.aarch64/src/org/graalvm/compiler/hotspot/aarch64/AArch64HotSpotLIRGenerator.java	2017-07-07 09:30:00.000000000 -0700
@@ -30,6 +30,7 @@
 
 import org.graalvm.compiler.asm.Label;
 import org.graalvm.compiler.asm.aarch64.AArch64Address.AddressingMode;
+import org.graalvm.compiler.asm.aarch64.AArch64Assembler.PrefetchMode;
 import org.graalvm.compiler.asm.aarch64.AArch64Assembler.ConditionFlag;
 import org.graalvm.compiler.core.aarch64.AArch64ArithmeticLIRGenerator;
 import org.graalvm.compiler.core.aarch64.AArch64LIRGenerator;
@@ -250,7 +251,7 @@
 
     @Override
     public void emitPrefetchAllocate(Value address) {
-        append(new AArch64PrefetchOp(asAddressValue(address), config.allocatePrefetchInstr));
+        append(new AArch64PrefetchOp(asAddressValue(address), PrefetchMode.PSTL1KEEP));
     }
 
     @Override