Request for reviews (XS): 6714694: assertion in 64bit server vm (store->find_edge(load) != -1,"missing precedence edge")

[Vladimir Kozlov]

http://webrev.invokedynamic.info/kvn/6714694/index.html

Fixed 6714694: assertion in 64bit server vm (store->find_edge(load) != -1,"missing precedence edge")

Problem:
The method raise_LCA_above_marks() terminates LCA search early
when mid->dom_lca(LCA) == mid which is already marked as visited.
Note: it is old problem not related to COOP.

Solution:
Set visited mark after LCA's predecessors are put on the worklist.

Reviewed by:
Fix verified (y/n): y, failed test cases.

Other testing:
JPRT