# HG changeset patch
# User Lukas Stadler <lukas.stadler@oracle.com>
# Date 1395399074 -3600
# Node ID c8fb80093621eff1ec9796c2aed81e9a08512553
# Parent  91ed2ba34b06cff22a6653ebd0308f4da63087c2
metric for number of implicit null checks in GuardLoweringPhase

diff -r 91ed2ba34b06 -r c8fb80093621 graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/GuardLoweringPhase.java
--- a/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/GuardLoweringPhase.java	Thu Mar 20 14:14:48 2014 +0100
+++ b/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/GuardLoweringPhase.java	Fri Mar 21 11:51:14 2014 +0100
@@ -55,6 +55,9 @@
  * does the actual control-flow expansion of the remaining {@link GuardNode GuardNodes}.
  */
 public class GuardLoweringPhase extends BasePhase<MidTierContext> {
+
+    private static final DebugMetric metricImplicitNullCheck = Debug.metric("ImplicitNullCheck");
+
     private static class UseImplicitNullChecks extends ScheduledNodeIterator {
 
         private final IdentityHashMap<ValueNode, GuardNode> nullGuarded = new IdentityHashMap<>();
@@ -88,6 +91,7 @@
         private void processAccess(Access access) {
             GuardNode guard = nullGuarded.get(access.object());
             if (guard != null && isImplicitNullCheck(access.nullCheckLocation())) {
+                metricImplicitNullCheck.increment();
                 access.setGuard(guard.getGuard());
                 FixedAccessNode fixedAccess;
                 if (access instanceof FloatingAccessNode) {