src/share/vm/opto/ifnode.cpp

*** 238,254 ****
    // Register the new RegionNodes but do not transform them.  Cannot
    // transform until the entire Region/Phi conglomerate has been hacked
    // as a single huge transform.
    igvn->register_new_node_with_optimizer( region_c );
    igvn->register_new_node_with_optimizer( region_x );
-   phi_x = phase->transform( phi_x );
    // Prevent the untimely death of phi_x.  Currently he has no uses.  He is
    // about to get one.  If this only use goes away, then phi_x will look dead.
    // However, he will be picking up some more uses down below.
    Node *hook = new (igvn->C, 4) Node(4);
    hook->init_req(0, phi_x);
    hook->init_req(1, phi_c);
  
    // Make the compare
    Node *cmp_c = phase->makecon(t);
    Node *cmp_x = cmp->clone();
    cmp_x->set_req(1,phi_x);
--- 238,254 ----
    // Register the new RegionNodes but do not transform them.  Cannot
    // transform until the entire Region/Phi conglomerate has been hacked
    // as a single huge transform.
    igvn->register_new_node_with_optimizer( region_c );
    igvn->register_new_node_with_optimizer( region_x );
    // Prevent the untimely death of phi_x.  Currently he has no uses.  He is
    // about to get one.  If this only use goes away, then phi_x will look dead.
    // However, he will be picking up some more uses down below.
    Node *hook = new (igvn->C, 4) Node(4);
    hook->init_req(0, phi_x);
    hook->init_req(1, phi_c);
+   phi_x = phase->transform( phi_x );
  
    // Make the compare
    Node *cmp_c = phase->makecon(t);
    Node *cmp_x = cmp->clone();
    cmp_x->set_req(1,phi_x);
*** 320,329 ****
--- 320,330 ----
          // Only construct phi_s if needed, otherwise provides
          // interfering use.
          phi_s = PhiNode::make_blank(region_s,phi);
          phi_s->init_req( 1, phi_c );
          phi_s->init_req( 2, phi_x );
+         hook->add_req(phi_s);
          phi_s = phase->transform(phi_s);
        }
        proj_path_data = phi_s;
        proj_path_ctrl = region_s;
      } else {
*** 331,340 ****
--- 332,342 ----
          // Only construct phi_f if needed, otherwise provides
          // interfering use.
          phi_f = PhiNode::make_blank(region_f,phi);
          phi_f->init_req( 1, phi_c );
          phi_f->init_req( 2, phi_x );
+         hook->add_req(phi_f);
          phi_f = phase->transform(phi_f);
        }
        proj_path_data = phi_f;
        proj_path_ctrl = region_f;
      }