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7043552: regression after 7042327
authorkvn
Tue, 10 May 2011 12:57:21 -0700
changeset 9634 985153f94e98
parent 9633 92a7a2841a16
child 9635 f668c715d4aa
7043552: regression after 7042327 Summary: Generate Opaque2 node only during first unroll. Reviewed-by: never
hotspot/src/share/vm/opto/loopTransform.cpp file | annotate | diff | comparison | revisions 
--- a/hotspot/src/share/vm/opto/loopTransform.cpp	Tue May 10 00:45:03 2011 -0700
+++ b/hotspot/src/share/vm/opto/loopTransform.cpp	Tue May 10 12:57:21 2011 -0700
@@ -1230,7 +1230,7 @@
         set_ctrl(new_limit, C->root());
       } else {
         // Limit is not constant.
-        {
+        if (loop_head->unrolled_count() == 1) { // only for first unroll
           // Separate limit by Opaque node in case it is an incremented
           // variable from previous loop to avoid using pre-incremented
           // value which could increase register pressure.
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