src/share/vm/opto/postaloc.cpp

*** 144,154 ****
          old->set_req(i, NULL);
          blk_adjust += yank_if_dead_recurse(n, orig_old, current_block, value, regnd);
        }
      }
      // Disconnect control and remove precedence edges if any exist
!     old->disconnect_inputs(NULL);
    }
    return blk_adjust;
  }
  
  //------------------------------use_prior_register-----------------------------
--- 144,154 ----
          old->set_req(i, NULL);
          blk_adjust += yank_if_dead_recurse(n, orig_old, current_block, value, regnd);
        }
      }
      // Disconnect control and remove precedence edges if any exist
!     old->disconnect_inputs(NULL, C);
    }
    return blk_adjust;
  }
  
  //------------------------------use_prior_register-----------------------------
*** 511,521 ****
        }
        if( u != NodeSentinel ) {    // Junk Phi.  Remove
          b->_nodes.remove(j--); phi_dex--;
          _cfg._bbs.map(phi->_idx,NULL);
          phi->replace_by(u);
!         phi->disconnect_inputs(NULL);
          continue;
        }
        // Note that if value[pidx] exists, then we merged no new values here
        // and the phi is useless.  This can happen even with the above phi
        // removal for complex flows.  I cannot keep the better known value here
--- 511,521 ----
        }
        if( u != NodeSentinel ) {    // Junk Phi.  Remove
          b->_nodes.remove(j--); phi_dex--;
          _cfg._bbs.map(phi->_idx,NULL);
          phi->replace_by(u);
!         phi->disconnect_inputs(NULL, C);
          continue;
        }
        // Note that if value[pidx] exists, then we merged no new values here
        // and the phi is useless.  This can happen even with the above phi
        // removal for complex flows.  I cannot keep the better known value here