}
	case ir.ODEFER:
		n := n.(*ir.GoDeferStmt)
		if base.Debug.Defer > 0 {
			var defertype string
			if s.hasOpenDefers {
				defertype = "open-coded"
			} else if n.Esc() == ir.EscNever {
				defertype = "stack-allocated"
			} else {
				defertype = "heap-allocated"
			}
			base.WarnfAt(n.Pos(), "%s defer", defertype)
		}
		if s.hasOpenDefers {
			s.openDeferRecord(n.Call.(*ir.CallExpr))