--- old/src/cpu/x86/vm/vm_version_x86.cpp	2017-06-21 14:57:28.002941500 -0700
+++ new/src/cpu/x86/vm/vm_version_x86.cpp	2017-06-21 14:57:27.660400400 -0700
@@ -654,6 +654,19 @@
         ((extended_cpu_model() == 0x57) ||   // Xeon Phi 3200/5200/7200
         (extended_cpu_model() == 0x85))) {  // Future Xeon Phi
       _features &= ~CPU_VZEROUPPER;
+      if (FLAG_IS_DEFAULT(UseIncDec)) {
+        FLAG_SET_DEFAULT(UseIncDec, false);
+      }
+#ifdef COMPILER2
+      if (FLAG_IS_DEFAULT(OptoScheduling)) {
+        OptoScheduling = true;
+      }
+#endif
+      if (supports_sse4_2()) { // Silvermont
+        if (FLAG_IS_DEFAULT(UseUnalignedLoadStores)) {
+          UseUnalignedLoadStores = true; // use movdqu on newest Intel cpus
+        }
+      }
     }
   }
 
@@ -1193,6 +1206,9 @@
           UseUnalignedLoadStores = true; // use movdqu on newest Intel cpus
         }
       }
+      if (FLAG_IS_DEFAULT(UseIncDec)) {
+        FLAG_SET_DEFAULT(UseIncDec, false);
+      }
     }
     if(FLAG_IS_DEFAULT(AllocatePrefetchInstr) && supports_3dnow_prefetch()) {
       AllocatePrefetchInstr = 3;