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changeset 21081:2e9250b29d14

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Use trapping null check in g1PreWriteBarrier snippet.
author Roland Schatz <roland.schatz@oracle.com>
date Wed, 22 Apr 2015 16:54:26 +0200
parents 3253fe1bed41
children 266eef1c29e0 de2fb3e4df49
files graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/WriteBarrierSnippets.java graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/NullCheckNode.java
diffstat 2 files changed, 5 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/WriteBarrierSnippets.java	Wed Apr 22 16:46:57 2015 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/WriteBarrierSnippets.java	Wed Apr 22 16:54:26 2015 +0200
@@ -112,8 +112,8 @@
     @Snippet
     public static void g1PreWriteBarrier(Object object, Object expectedObject, Object location, @ConstantParameter boolean doLoad, @ConstantParameter boolean nullCheck,
                     @ConstantParameter Register threadRegister, @ConstantParameter boolean trace) {
-        if (nullCheck && object == null) {
-            DeoptimizeNode.deopt(DeoptimizationAction.InvalidateReprofile, DeoptimizationReason.NullCheckException);
+        if (nullCheck) {
+            NullCheckNode.nullCheck(object);
         }
         Word thread = registerAsWord(threadRegister);
         Object fixedObject = FixedValueAnchorNode.getObject(object);
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/NullCheckNode.java	Wed Apr 22 16:46:57 2015 +0200
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/NullCheckNode.java	Wed Apr 22 16:54:26 2015 +0200
@@ -52,4 +52,7 @@
     public boolean canDeoptimize() {
         return true;
     }
+
+    @NodeIntrinsic
+    public static native void nullCheck(Object object);
 }