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changeset 13723:1834ae0bc965

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GuardLowering: do not use trapping accesses for guards with a speculation
author Gilles Duboscq <duboscq@ssw.jku.at>
date Tue, 21 Jan 2014 18:35:46 +0100
parents 2d4a8d3d286b
children 256bc461645e
files graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/GuardLoweringPhase.java
diffstat 1 files changed, 2 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/GuardLoweringPhase.java	Tue Jan 21 18:35:03 2014 +0100
+++ b/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/GuardLoweringPhase.java	Tue Jan 21 18:35:46 2014 +0100
@@ -27,6 +27,7 @@
 import java.util.*;
 import java.util.Map.Entry;
 
+import com.oracle.graal.api.meta.*;
 import com.oracle.graal.debug.*;
 import com.oracle.graal.graph.*;
 import com.oracle.graal.nodes.*;
@@ -107,7 +108,7 @@
 
         private void processGuard(Node node) {
             GuardNode guard = (GuardNode) node;
-            if (guard.negated() && guard.condition() instanceof IsNullNode) {
+            if (guard.negated() && guard.condition() instanceof IsNullNode && (guard.getSpeculation() == null || guard.getSpeculation().equals(Constant.NULL_OBJECT))) {
                 ValueNode obj = ((IsNullNode) guard.condition()).object();
                 nullGuarded.put(obj, guard);
             }