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changeset 16195:e34d8c5fa927

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do not create PiNode when lowering GuardingPiNode if the latter has no usages
author Doug Simon <doug.simon@oracle.com>
date Thu, 19 Jun 2014 17:51:35 +0200
parents 7fb828b4c32b
children 8bf243c2c87b
files graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/GuardingPiNode.java
diffstat 1 files changed, 4 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/GuardingPiNode.java	Thu Jun 19 17:33:44 2014 +0200
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/GuardingPiNode.java	Thu Jun 19 17:51:35 2014 +0200
@@ -94,8 +94,10 @@
     public void lower(LoweringTool tool) {
         GuardingNode guard = tool.createGuard(next(), condition, reason, action, negated);
         ValueAnchorNode anchor = graph().add(new ValueAnchorNode((ValueNode) guard));
-        PiNode pi = graph().unique(new PiNode(object, stamp(), (ValueNode) guard));
-        replaceAtUsages(pi);
+        if (usages().isNotEmpty()) {
+            PiNode pi = graph().unique(new PiNode(object, stamp(), (ValueNode) guard));
+            replaceAtUsages(pi);
+        }
         graph().replaceFixedWithFixed(this, anchor);
     }