diff -r 6365d86cf722 -r 6ecc7cc67619 hotspot/src/share/vm/runtime/commandLineFlagConstraintsCompiler.cpp
--- a/hotspot/src/share/vm/runtime/commandLineFlagConstraintsCompiler.cpp	Thu Apr 27 14:15:30 2017 +0000
+++ b/hotspot/src/share/vm/runtime/commandLineFlagConstraintsCompiler.cpp	Fri Apr 28 09:50:47 2017 +0200
@@ -289,10 +289,10 @@
 }
 
 Flag::Error ArraycopyDstPrefetchDistanceConstraintFunc(uintx value, bool verbose) {
-  if (value != 0) {
+  if (value >= 4032) {
     CommandLineError::print(verbose,
-                            "ArraycopyDstPrefetchDistance (" UINTX_FORMAT ") must be 0\n",
-                            value);
+                            "ArraycopyDstPrefetchDistance (" UINTX_FORMAT ") must be"
+                            "between 0 and 4031\n", value);
     return Flag::VIOLATES_CONSTRAINT;
   }
 
@@ -300,10 +300,10 @@
 }
 
 Flag::Error ArraycopySrcPrefetchDistanceConstraintFunc(uintx value, bool verbose) {
-  if (value != 0) {
+  if (value >= 4032) {
     CommandLineError::print(verbose,
-                            "ArraycopySrcPrefetchDistance (" UINTX_FORMAT ") must be 0\n",
-                            value);
+                            "ArraycopySrcPrefetchDistance (" UINTX_FORMAT ") must be"
+                            "between 0 and 4031\n", value);
     return Flag::VIOLATES_CONSTRAINT;
   }