--- /dev/null
+/*
+ * Copyright (C) 2012 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LLIntCommon_h
+#define LLIntCommon_h
+
+// Print every instruction executed.
+#define LLINT_EXECUTION_TRACING 0
+
+// Print some information for some of the more subtle slow paths.
+#define LLINT_SLOW_PATH_TRACING 0
+
+// Disable inline allocation in the interpreter. This is great if you're changing
+// how the GC allocates.
+#define LLINT_ALWAYS_ALLOCATE_SLOW 0
+
+// Enable OSR into the JIT. Disabling this while the LLInt is enabled effectively
+// turns off all JIT'ing, since in LLInt's parlance, OSR subsumes any form of JIT
+// invocation.
+#if ENABLE(JIT)
+#define LLINT_OSR_TO_JIT 1
+#else
+#define LLINT_OSR_TO_JIT 0
+#endif
+
+#endif // LLIntCommon_h
+