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diff src/share/vm/opto/compile.cpp @ 4115:1bd45abaa507

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6890673: Eliminate allocations immediately after EA Summary: Try to eliminate allocations and related locks immediately after escape analysis. Reviewed-by: never
author kvn
date Wed, 16 Nov 2011 09:13:57 -0800
parents 6729bbc1fcd6
children 669f6a7d5b70
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line diff
--- a/src/share/vm/opto/compile.cpp	Wed Nov 16 01:39:50 2011 -0800
+++ b/src/share/vm/opto/compile.cpp	Wed Nov 16 09:13:57 2011 -0800
@@ -1711,11 +1711,22 @@
 
     if (failing())  return;
 
+    // Optimize out fields loads from scalar replaceable allocations.
     igvn.optimize();
     print_method("Iter GVN after EA", 2);
 
     if (failing())  return;
 
+    if (congraph() != NULL && macro_count() > 0) {
+      PhaseMacroExpand mexp(igvn);
+      mexp.eliminate_macro_nodes();
+      igvn.set_delay_transform(false);
+
+      igvn.optimize();
+      print_method("Iter GVN after eliminating allocations and locks", 2);
+
+      if (failing())  return;
+    }
   }
 
   // Loop transforms on the ideal graph.  Range Check Elimination,