Title: [92750] trunk/Source/_javascript_Core
- Revision
- 92750
- Author
- [email protected]
- Date
- 2011-08-10 00:06:57 -0700 (Wed, 10 Aug 2011)
Log Message
DFG JIT heap prediction causes regressions when combined with
aggressive integer prediction
https://bugs.webkit.org/show_bug.cgi?id=65954
Reviewed by Gavin Barraclough.
Disabled heap prediction, but did not remove the capability.
This improves V8 crypto performance by 20%.
* dfg/DFGGraph.h:
(JSC::DFG::Graph::predict):
Modified Paths
Diff
Modified: trunk/Source/_javascript_Core/ChangeLog (92749 => 92750)
--- trunk/Source/_javascript_Core/ChangeLog 2011-08-10 05:35:28 UTC (rev 92749)
+++ trunk/Source/_javascript_Core/ChangeLog 2011-08-10 07:06:57 UTC (rev 92750)
@@ -1,3 +1,17 @@
+2011-08-10 Filip Pizlo <[email protected]>
+
+ DFG JIT heap prediction causes regressions when combined with
+ aggressive integer prediction
+ https://bugs.webkit.org/show_bug.cgi?id=65954
+
+ Reviewed by Gavin Barraclough.
+
+ Disabled heap prediction, but did not remove the capability.
+ This improves V8 crypto performance by 20%.
+
+ * dfg/DFGGraph.h:
+ (JSC::DFG::Graph::predict):
+
2011-08-09 Filip Pizlo <[email protected]>
DFG JIT does not speculative integers as aggressively as it should
Modified: trunk/Source/_javascript_Core/dfg/DFGGraph.h (92749 => 92750)
--- trunk/Source/_javascript_Core/dfg/DFGGraph.h 2011-08-10 05:35:28 UTC (rev 92749)
+++ trunk/Source/_javascript_Core/dfg/DFGGraph.h 2011-08-10 07:06:57 UTC (rev 92750)
@@ -164,13 +164,6 @@
case GetGlobalVar:
predictGlobalVar(node.varNumber(), prediction);
break;
- case GetById:
- case GetMethod:
- case GetByVal:
- case Call:
- case Construct:
- node.predict(prediction);
- break;
default:
break;
}
_______________________________________________
webkit-changes mailing list
[email protected]
http://lists.webkit.org/mailman/listinfo.cgi/webkit-changes
