1.1 --- a/src/share/vm/opto/phaseX.cpp Tue Nov 27 12:48:52 2012 -0800
1.2 +++ b/src/share/vm/opto/phaseX.cpp Tue Nov 27 17:24:15 2012 -0800
1.3 @@ -383,6 +383,8 @@
1.4
1.5 // Identify nodes that are reachable from below, useful.
1.6 C->identify_useful_nodes(_useful);
1.7 + // Update dead node list
1.8 + C->update_dead_node_list(_useful);
1.9
1.10 // Remove all useless nodes from PhaseValues' recorded types
1.11 // Must be done before disconnecting nodes to preserve hash-table-invariant
1.12 @@ -1190,7 +1192,7 @@
1.13 }
1.14 }
1.15 }
1.16 -
1.17 + C->record_dead_node(dead->_idx);
1.18 if (dead->is_macro()) {
1.19 C->remove_macro_node(dead);
1.20 }
1.21 @@ -1199,6 +1201,11 @@
1.22 continue;
1.23 }
1.24 }
1.25 + // Constant node that has no out-edges and has only one in-edge from
1.26 + // root is usually dead. However, sometimes reshaping walk makes
1.27 + // it reachable by adding use edges. So, we will NOT count Con nodes
1.28 + // as dead to be conservative about the dead node count at any
1.29 + // given time.
1.30 }
1.31
1.32 // Aggressively kill globally dead uses
