# HG changeset patch
# User kvn
# Date 1305057441 25200
# Node ID 3b1d58916d5f17fc5507977ef3823cb029bdef81
# Parent  e2a92dd0d3d26313c3e405b1c173189010c7181e
7043552: regression after 7042327
Summary: Generate Opaque2 node only during first unroll.
Reviewed-by: never

diff -r e2a92dd0d3d2 -r 3b1d58916d5f src/share/vm/opto/loopTransform.cpp
--- a/src/share/vm/opto/loopTransform.cpp	Tue May 10 00:45:03 2011 -0700
+++ b/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.