r := mkcallstmt("selectsetpc", typecheck.NodAddr(ir.NewIndexExpr(base.Pos, pcs, ir.NewInt(base.Pos, int64(i)))))
			init = append(init, r)
		}
	}
	if nsends+nrecvs != ncas {
		base.Fatalf("walkSelectCases: miscount: %v + %v != %v", nsends, nrecvs, ncas)
	}

	// run the select
	base.Pos = sellineno
	chosen := typecheck.TempAt(base.Pos, ir.CurFunc, types.Types[types.TINT])