# HG changeset patch
# User aph
# Date 1466704739 0
# Node ID 0c96934993832078c71646ef2f703d62ee74c546
# Parent  a370975c1af23b97f6368c48621fdb05cb005bbd
8157306, PR3209: Random infrequent null pointer exceptions in javac
Reviewed-by: kvn

diff -r a370975c1af2 -r 0c9693499383 src/share/vm/opto/lcm.cpp
--- a/src/share/vm/opto/lcm.cpp	Sun Sep 01 19:21:05 2013 +0200
+++ b/src/share/vm/opto/lcm.cpp	Thu Jun 23 17:58:59 2016 +0000
@@ -1075,11 +1075,12 @@
     Block *sb = block->_succs[i];
     // Clone the entire area; ignoring the edge fixup for now.
     for( uint j = end; j > beg; j-- ) {
-      // It is safe here to clone a node with anti_dependence
-      // since clones dominate on each path.
       Node *clone = block->get_node(j-1)->clone();
       sb->insert_node(clone, 1);
       map_node_to_block(clone, sb);
+      if (clone->needs_anti_dependence_check()) {
+        insert_anti_dependences(sb, clone);
+      }
     }
   }