case ir.OBREAK:
				to = lab.breakTarget
			}
		}

		b := s.endBlock()
		b.Pos = s.lastPos.WithIsStmt() // Do this even if b is an empty block.
		b.AddEdgeTo(to)

	case ir.OFOR:
		// OFOR: for Ninit; Left; Right { Nbody }
		// cond (Left); body (Nbody); incr (Right)
		n := n.(*ir.ForStmt)
		base.Assert(!n.DistinctVars) // Should all be rewritten before escape analysis