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diff src/share/vm/opto/parseHelper.cpp @ 1080:7c57aead6d3e

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6892658: C2 should optimize some stringbuilder patterns Reviewed-by: kvn, twisti
author never
date Thu, 12 Nov 2009 09:24:21 -0800
parents bd02caa94611
children 87684f1a88b5
line wrap: on
line diff
--- a/src/share/vm/opto/parseHelper.cpp	Fri Nov 27 07:56:58 2009 -0800
+++ b/src/share/vm/opto/parseHelper.cpp	Thu Nov 12 09:24:21 2009 -0800
@@ -221,6 +221,14 @@
 
   // Push resultant oop onto stack
   push(obj);
+
+  // Keep track of whether opportunities exist for StringBuilder
+  // optimizations.
+  if (OptimizeStringConcat &&
+      (klass == C->env()->StringBuilder_klass() ||
+       klass == C->env()->StringBuffer_klass())) {
+    C->set_has_stringbuilder(true);
+  }
 }
 
 #ifndef PRODUCT