RFR(S): 8011706: specjvm2008 test xml.transform gets array bound exception with c1

[Roland Westrelin]

http://cr.openjdk.java.net/~roland/8011706/webrev.00/

Loop invariant code motion moves loop invariant loads (from a field or an array) to the dominator of the loop header. If the dominator is not a direct predecessor of the loop header then some stores to the same field/array may happen between the dominator and the loop header and a load may be moved before a store to the same field/array. 

Roland.