src/share/vm/opto/ifnode.cpp

*** 529,538 ****
--- 529,541 ----
    // Use linear_only if we are still parsing, since we cannot
    // trust the regions to be fully filled in.
    if (linear_only)
      return NULL;
  
+   if( dom->is_Root() )
+     return NULL;
+ 
    // Else hit a Region.  Check for a loop header
    if( dom->is_Loop() )
      return dom->in(1);          // Skip up thru loops
  
    // Check for small diamonds