Mercurial > hg > graal-jvmci-8
diff graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/GraalOptions.java @ 5343:20c14eb46238
added GraalOptions.CheckcastMinHintHitProbability to better guide use of hints for checkcasts
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Wed, 02 May 2012 17:09:00 +0200 |
| parents | f536a459c2d3 |
| children | 4c3d953f8131 |
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--- a/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/GraalOptions.java Wed May 02 16:32:00 2012 +0200 +++ b/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/GraalOptions.java Wed May 02 17:09:00 2012 +0200 @@ -230,7 +230,19 @@ */ public static boolean CheckcastCounters = false; + /** + * If the probability that a checkcast will hit one the profiled types (up to {@link #CheckcastMaxHints}) + * is below this value, the checkcast will be compiled without hints. + */ + public static double CheckcastMinHintHitProbability = 0.5; + + /** + * The maximum number of hint types that will be used when compiling a checkcast for which + * profiling information is available. Note that {@link #CheckcastMinHintHitProbability} + * also influences whether hints are used. + */ public static int CheckcastMaxHints = 2; + public static int InstanceOfMaxHints = 1; static {