--- old/src/cpu/x86/vm/vm_version_x86.cpp	2015-09-04 19:48:21.412728900 -0700
+++ new/src/cpu/x86/vm/vm_version_x86.cpp	2015-09-04 19:48:21.037653900 -0700
@@ -665,6 +665,18 @@
     FLAG_SET_DEFAULT(UseCRC32Intrinsics, false);
   }
 
+  if (supports_sse4_2()) {
+    if (FLAG_IS_DEFAULT(UseCRC32CIntrinsics)) {
+      UseCRC32CIntrinsics = true;
+    }
+  }
+  else if (UseCRC32CIntrinsics) {
+    if (!FLAG_IS_DEFAULT(UseCRC32CIntrinsics)) {
+      warning("CRC32C intrinsics are not available on this CPU");
+    }
+    FLAG_SET_DEFAULT(UseCRC32CIntrinsics, false);
+  }
+
   // The AES intrinsic stubs require AES instruction support (of course)
   // but also require sse3 mode for instructions it use.
   if (UseAES && (UseSSE > 2)) {
@@ -708,12 +720,6 @@
     FLAG_SET_DEFAULT(UseSHA512Intrinsics, false);
   }
 
-  if (UseCRC32CIntrinsics) {
-    if (!FLAG_IS_DEFAULT(UseCRC32CIntrinsics))
-      warning("CRC32C intrinsics are not available on this CPU");
-    FLAG_SET_DEFAULT(UseCRC32CIntrinsics, false);
-  }
-
   if (UseAdler32Intrinsics) {
     warning("Adler32Intrinsics not available on this CPU.");
     FLAG_SET_DEFAULT(UseAdler32Intrinsics, false);