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diff src/share/vm/opto/macro.cpp @ 3788:e3cbc9ddd434

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7044738: Loop unroll optimization causes incorrect result Summary: take into account memory dependencies when clonning nodes in clone_up_backedge_goo(). Reviewed-by: never
author kvn
date Tue, 28 Jun 2011 15:24:29 -0700
parents 642c68c75db9
children f1c12354c3f7
line wrap: on
line diff
--- a/src/share/vm/opto/macro.cpp	Tue Jun 28 15:04:39 2011 -0700
+++ b/src/share/vm/opto/macro.cpp	Tue Jun 28 15:24:29 2011 -0700
@@ -391,13 +391,9 @@
     }
   }
   // Check if an appropriate new value phi already exists.
-  Node* new_phi = NULL;
-  uint size = value_phis->size();
-  for (uint i=0; i < size; i++) {
-    if ( mem->_idx == value_phis->index_at(i) ) {
-      return value_phis->node_at(i);
-    }
-  }
+  Node* new_phi = value_phis->find(mem->_idx);
+  if (new_phi != NULL)
+    return new_phi;
 
   if (level <= 0) {
     return NULL; // Give up: phi tree too deep