1 ; RUN: llc < %s -march=arm64 2 3 ; The target lowering for integer comparisons was replacing some DAG nodes 4 ; during operation legalization, which resulted in dangling pointers, 5 ; cycles in DAGs, and eventually crashes. This is the testcase for 6 ; one of those crashes. (rdar://10653656) 7 8 define void @test(i1 zeroext %IsArrow) nounwind ssp align 2 { 9 entry: 10 br i1 undef, label %return, label %lor.lhs.false 11 12 lor.lhs.false: 13 br i1 undef, label %return, label %if.end 14 15 if.end: 16 %tmp.i = load i64* undef, align 8 17 %and.i.i.i = and i64 %tmp.i, -16 18 br i1 %IsArrow, label %if.else_crit_edge, label %if.end32 19 20 if.else_crit_edge: 21 br i1 undef, label %if.end32, label %return 22 23 if.end32: 24 %0 = icmp ult i32 undef, 3 25 %1 = zext i64 %tmp.i to i320 26 %.pn.v = select i1 %0, i320 128, i320 64 27 %.pn = shl i320 %1, %.pn.v 28 %ins346392 = or i320 %.pn, 0 29 store i320 %ins346392, i320* undef, align 8 30 br i1 undef, label %sw.bb.i.i, label %exit 31 32 sw.bb.i.i: 33 unreachable 34 35 exit: 36 unreachable 37 38 return: 39 ret void 40 } 41
