o.popTemp(t)

	case ir.ORETURN:
		n := n.(*ir.ReturnStmt)
		o.exprList(n.Results)
		o.out = append(o.out, n)

	// Special: clean case temporaries in each block entry.
	// Select must enter one of its blocks, so there is no
	// need for a cleaning at the end.
	// Doubly special: evaluation order for select is stricter
	// than ordinary expressions. Even something like p.c

	EvGoBlockCond       event.Type = 26 // goroutine blocks on Cond [timestamp, stack]
	EvGoBlockNet        event.Type = 27 // goroutine blocks on network [timestamp, stack]
	EvGoSysCall         event.Type = 28 // syscall enter [timestamp, stack]
	EvGoSysExit         event.Type = 29 // syscall exit [timestamp, goroutine id, seq, real timestamp]
	EvGoSysBlock        event.Type = 30 // syscall blocks [timestamp]