--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/runtime/simpleThresholdPolicy.inline.hpp	Fri Sep 03 17:51:07 2010 -0700
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+
+template<CompLevel level>
+bool SimpleThresholdPolicy::call_predicate_helper(int i, int b, double scale) {
+  switch(level) {
+  case CompLevel_none:
+  case CompLevel_limited_profile:
+    return (i > Tier3InvocationThreshold * scale) ||
+           (i > Tier3MinInvocationThreshold * scale && i + b > Tier3CompileThreshold * scale);
+  case CompLevel_full_profile:
+   return (i > Tier4InvocationThreshold * scale) ||
+          (i > Tier4MinInvocationThreshold * scale && i + b > Tier4CompileThreshold * scale);
+  }
+  return true;
+}
+
+template<CompLevel level>
+bool SimpleThresholdPolicy::loop_predicate_helper(int i, int b, double scale) {
+  switch(level) {
+  case CompLevel_none:
+  case CompLevel_limited_profile:
+    return b > Tier3BackEdgeThreshold * scale;
+  case CompLevel_full_profile:
+    return b > Tier4BackEdgeThreshold * scale;
+  }
+  return true;
+}
+
+// Simple methods are as good being compiled with C1 as C2.
+// Determine if a given method is such a case.
+bool SimpleThresholdPolicy::is_trivial(methodOop method) {
+  if (method->is_accessor()) return true;
+  if (method->code() != NULL) {
+    methodDataOop mdo = method->method_data();
+    if (mdo != NULL && mdo->num_loops() == 0 &&
+        (method->code_size() < 5  || (mdo->num_blocks() < 4) && (method->code_size() < 15))) {
+      return !mdo->would_profile();
+    }
+  }
+  return false;
+}