Mercurial > hg > truffle

changeset 11792:9ddd8704a65b

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removed creation of intermediate ArrayLengthNode when lowering [Load|Store]IndexedNodes
author Doug Simon <doug.simon@oracle.com>
date Thu, 19 Sep 2013 23:51:37 +0200
parents cb5df1879500
children ca9c16735da8
files graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotRuntime.java
diffstat 1 files changed, 8 insertions(+), 7 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotRuntime.java	Thu Sep 19 23:42:23 2013 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotRuntime.java	Thu Sep 19 23:51:37 2013 +0200
@@ -990,13 +990,14 @@
         }
     }
 
-    private static GuardingNode createBoundsCheck(AccessIndexedNode n, LoweringTool tool) {
-        StructuredGraph graph = n.graph();
-        ArrayLengthNode arrayLength = graph.add(new ArrayLengthNode(n.array()));
-        GuardingNode guard = tool.createGuard(graph.unique(new IntegerBelowThanNode(n.index(), arrayLength)), BoundsCheckException, InvalidateReprofile);
-
-        graph.addBeforeFixed(n, arrayLength);
-        return guard;
+    private GuardingNode createBoundsCheck(AccessIndexedNode n, LoweringTool tool) {
+        StructuredGraph g = n.graph();
+        ValueNode array = n.array();
+        Stamp stamp = StampFactory.positiveInt();
+        ReadNode arrayLength = g.add(new ReadNode(array, ConstantLocationNode.create(FINAL_LOCATION, Kind.Int, config.arrayLengthOffset, g), stamp, BarrierType.NONE, false));
+        g.addBeforeFixed(n, arrayLength);
+        tool.createNullCheckGuard(arrayLength, array);
+        return tool.createGuard(g.unique(new IntegerBelowThanNode(n.index(), arrayLength)), BoundsCheckException, InvalidateReprofile);
     }
 
     public ResolvedJavaType lookupJavaType(Class<?> clazz) {