--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/GraalHotSpotVMConfig.java	Wed Jun 20 12:02:17 2018 -0700
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/GraalHotSpotVMConfig.java	Wed Jun 20 17:30:43 2018 -0700
@@ -559,6 +559,8 @@
 
     public final boolean tlabStats = getFlag("TLABStats", Boolean.class);
 
+    public final boolean useFastTLABRefill = versioned.useFastTLABRefill;
+
     // FIXME This is only temporary until the GC code is changed.
     public final boolean inlineContiguousAllocationSupported = getFieldValue("CompilerToVM::Data::_supports_inline_contig_alloc", Boolean.class);
     public final long heapEndAddress = getFieldValue("CompilerToVM::Data::_heap_end_addr", Long.class, "HeapWord**");

--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/GraalHotSpotVMConfigVersioned.java	Wed Jun 20 12:02:17 2018 -0700
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/GraalHotSpotVMConfigVersioned.java	Wed Jun 20 17:30:43 2018 -0700
@@ -84,4 +84,7 @@
     // JDK-8015774
     final long codeCacheLowBound = getFieldValue("CodeCache::_low_bound", Long.class, "address");
     final long codeCacheHighBound = getFieldValue("CodeCache::_high_bound", Long.class, "address");
+
+    // JDK-8205105
+    boolean useFastTLABRefill = false;
 }

--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/HotSpotReplacementsUtil.java	Wed Jun 20 12:02:17 2018 -0700
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/HotSpotReplacementsUtil.java	Wed Jun 20 17:30:43 2018 -0700
@@ -1022,4 +1022,9 @@
     public static final LocationIdentity METASPACE_ARRAY_LENGTH_LOCATION = NamedLocationIdentity.immutable("MetaspaceArrayLength");
 
     public static final LocationIdentity SECONDARY_SUPERS_ELEMENT_LOCATION = NamedLocationIdentity.immutable("SecondarySupersElement");
+
+    @Fold
+    public static boolean useFastTLABRefill(@InjectedParameter GraalHotSpotVMConfig config) {
+        return config.useFastTLABRefill;
+    }
 }

--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/stubs/NewArrayStub.java	Wed Jun 20 12:02:17 2018 -0700
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/stubs/NewArrayStub.java	Wed Jun 20 17:30:43 2018 -0700
@@ -35,6 +35,7 @@
 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.readLayoutHelper;
 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.registerAsWord;
 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.useCMSIncrementalMode;
+import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.useFastTLABRefill;
 import static org.graalvm.compiler.hotspot.replacements.NewObjectSnippets.MAX_ARRAY_FAST_PATH_ALLOCATION_LENGTH;
 import static org.graalvm.compiler.hotspot.replacements.NewObjectSnippets.formatArray;
 import static org.graalvm.compiler.hotspot.stubs.NewInstanceStub.refillAllocate;
@@ -122,7 +123,8 @@
         // check that array length is small enough for fast path.
         Word thread = registerAsWord(threadRegister);
         boolean inlineContiguousAllocationSupported = GraalHotSpotVMConfigNode.inlineContiguousAllocationSupported();
-        if (inlineContiguousAllocationSupported && !useCMSIncrementalMode(INJECTED_VMCONFIG) && length >= 0 && length <= MAX_ARRAY_FAST_PATH_ALLOCATION_LENGTH) {
+        if (useFastTLABRefill(INJECTED_VMCONFIG) && inlineContiguousAllocationSupported && !useCMSIncrementalMode(INJECTED_VMCONFIG) && length >= 0 &&
+                        length <= MAX_ARRAY_FAST_PATH_ALLOCATION_LENGTH) {
             Word memory = refillAllocate(thread, intArrayHub, sizeInBytes, logging(options));
             if (memory.notEqual(0)) {
                 if (logging(options)) {

--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/stubs/NewInstanceStub.java	Wed Jun 20 12:02:17 2018 -0700
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/stubs/NewInstanceStub.java	Wed Jun 20 17:30:43 2018 -0700
@@ -54,6 +54,7 @@
 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.tlabSlowAllocationsOffset;
 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.tlabStats;
 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.useCMSIncrementalMode;
+import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.useFastTLABRefill;
 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.useG1GC;
 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.useTLAB;
 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.wordSize;
@@ -148,7 +149,7 @@
          */
         Word thread = registerAsWord(threadRegister);
         boolean inlineContiguousAllocationSupported = GraalHotSpotVMConfigNode.inlineContiguousAllocationSupported();
-        if (!forceSlowPath(options) && inlineContiguousAllocationSupported && !useCMSIncrementalMode(INJECTED_VMCONFIG)) {
+        if (useFastTLABRefill(INJECTED_VMCONFIG) && !forceSlowPath(options) && inlineContiguousAllocationSupported && !useCMSIncrementalMode(INJECTED_VMCONFIG)) {
             if (isInstanceKlassFullyInitialized(hub)) {
                 int sizeInBytes = readLayoutHelper(hub);
                 Word memory = refillAllocate(thread, intArrayHub, sizeInBytes, logging(options));