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changeset 13800:2e7c7c980738

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In InstanceOfSnippets selection, use the exact (non-deoptimizing) snippet when we have an exact type even when the hint probabiliy is high enough for the instanceofWithProfile snippet.
author Gilles Duboscq <duboscq@ssw.jku.at>
date Wed, 29 Jan 2014 16:53:35 +0100
parents d2837f5c79ce
children 1be015fac5e3
files graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/InstanceOfSnippets.java
diffstat 1 files changed, 2 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/InstanceOfSnippets.java	Wed Jan 29 15:46:15 2014 +0100
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/InstanceOfSnippets.java	Wed Jan 29 16:53:35 2014 +0100
@@ -230,7 +230,7 @@
                 Arguments args;
 
                 StructuredGraph graph = instanceOf.graph();
-                if (hintInfo.hintHitProbability >= hintHitProbabilityThresholdForDeoptimizingSnippet()) {
+                if (hintInfo.hintHitProbability >= hintHitProbabilityThresholdForDeoptimizingSnippet() && hintInfo.exact == null) {
                     Hints hints = createHints(hintInfo, providers.getMetaAccess(), false, graph);
                     args = new Arguments(instanceofWithProfile, graph.getGuardsStage(), tool.getLoweringStage());
                     args.add("object", object);
@@ -256,7 +256,7 @@
                 }
                 args.add("trueValue", replacer.trueValue);
                 args.add("falseValue", replacer.falseValue);
-                if (hintInfo.hintHitProbability >= hintHitProbabilityThresholdForDeoptimizingSnippet()) {
+                if (hintInfo.hintHitProbability >= hintHitProbabilityThresholdForDeoptimizingSnippet() && hintInfo.exact == null) {
                     args.addConst("nullSeen", hintInfo.profile.getNullSeen() != TriState.FALSE);
                 }
                 return args;