1 ; RUN: llc < %s -mtriple=s390x-redhat-linux | FileCheck %s
3 ; Triggers a path in SelectionDAG's UpdateChains where a node is
4 ; deleted but we try to read it later (pr31710), invoking UB in
5 ; release mode or hitting an assert if they're enabled.
8 define void @btldata(i64* %u0, i32** %p0, i32** %p1, i32** %p3, i32** %p5, i32** %p7) {
10 %x0 = load i32*, i32** %p0, align 8, !tbaa !0
11 store i64 0, i64* %u0, align 8, !tbaa !4
12 %x1 = load i32*, i32** %p1, align 8, !tbaa !0
13 %x2 = load i32, i32* %x1, align 4, !tbaa !6
14 %x2ext = sext i32 %x2 to i64
15 store i32 %x2, i32* %x1, align 4, !tbaa !6
16 %x3 = load i32*, i32** %p3, align 8, !tbaa !0
17 %ptr = getelementptr inbounds i32, i32* %x3, i64 %x2ext
18 %x4 = load i32, i32* %ptr, align 4, !tbaa !6
19 %x4inc = add nsw i32 %x4, 1
20 store i32 %x4inc, i32* %ptr, align 4, !tbaa !6
21 store i64 undef, i64* %u0, align 8, !tbaa !4
22 %x5 = load i32*, i32** %p5, align 8, !tbaa !0
23 %x6 = load i32, i32* %x5, align 4, !tbaa !6
24 store i32 %x6, i32* %x5, align 4, !tbaa !6
25 %x7 = load i32*, i32** %p7, align 8, !tbaa !0
26 %x8 = load i32, i32* %x7, align 4, !tbaa !6
27 %x8inc = add nsw i32 %x8, 1
28 store i32 %x8inc, i32* %x7, align 4, !tbaa !6
33 !1 = !{!"any pointer", !2, i64 0}
34 !2 = !{!"omnipotent char", !3, i64 0}
35 !3 = !{!"Simple C/C++ TBAA"}
37 !5 = !{!"long", !2, i64 0}
39 !7 = !{!"int", !2, i64 0}